OMB APPROVAL OMB Number: 3235-0570 Expires: September 30, 2007 Estimated average burden hours per response.....19.4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES 		Investment Company Act file number 811-05516 Pioneer American Income Trust (Exact name of registrant as specified in charter) 60 State Street, Boston, MA 02109 (Address of principal executive offices) (ZIP code) Dorothy E. Bourassa, Pioneer Investment Management, Inc., 60 State Street, Boston, MA 02109 (Name and address of agent for service) Registrant's telephone number, including area code: (617) 742-7825 Date of fiscal year end: December 31 Date of reporting period: January 1, 2006 through June 30, 2006 Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles. A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. ss. 3507. ITEM 1. REPORTS TO SHAREOWNERS. PIONEER ----------------------- AMERICA INCOME TRUST Semiannual Report 6/30/06 [LOGO] PIONEER Investments(R) Table of Contents - -------------------------------------------------------------------------------- Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 15 Schedule of Investments 17 Financial Statements 31 Notes to Financial Statements 40 Trustees, Officers and Service Providers 47 President's Dear Shareowner, - -------------------------------------------------------------------------------- We know from the history of the capital markets that sudden shifts in investor sentiment can occur with little warning, based on an assortment of events. We believe such a shift in sentiment is occurring in reaction to the possibility that U.S. economic growth may slow in the second half of 2006. While U.S. markets fell in late May and early June, the economic events of the six- and 12-month periods ending June 30, 2006, have actually been characterized by continued low inflation at home and strong growth prospects abroad with rising commodity and stock prices. According to the International Monetary Fund, international economic growth in 2004-5 was the fastest of any two-year period in more than 30 years, and 2006 growth is projected to match the healthy growth of 2005. The growth has been broad-based, with Europe, Japan, and emerging market economies all showing strength. The result has been rising prices across a broad range of commodities, increasing corporate profits, and higher interest rates. The U.S. bond markets' concern has been that strong economic growth would spark inflation - we have already seen commodity prices rise, and U.S. labor costs are threatening to increase, since we are close to full employment. That may also be a reason why public sentiment is becoming uneasy. Despite strong first quarter economic growth, the U.S. economy for the second half of the year may slow in reaction to past increases in interest rates and energy costs. Thus far the only sign of such a slowdown has been a cooling housing market. Yet many observers believe a slower growing economy could be welcomed by the markets. The U.S. Federal Reserve has continued its program of measured short-term interest rate increases. However, the Fed Chairman, Ben Bernanke, indicated that inflation may moderate, which would permit the Fed to stop raising interest rates. Such action could have positive effects for both consumers and investors over the intermediate to longer term. By restraining inflation, the Fed may also limit upward 2 Letter pressure on longer-maturity bond yields and downward pressure on stocks' price/earnings ratios. In summary, we think security market valuations remain reasonable, and yet there are no guarantees in investing. The unpredictability reinforces the importance of Pioneer's message that investors should remain diversified, take a long-term view, and base investment decisions on economic and market fundamentals, rather than on emotion. Our investment philosophy and approach continue to be based on the use of fundamental research to identify a range of opportunities that offer an attractive balance of risk and reward to help shareowners work toward their long-term goals. Respectfully, /s/ Osbert M. Hood Osbert M. Hood, President Pioneer Investment Management, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Trust's historical or future performance are statements of the opinion of Trust management as of the date of the report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. 3 Pioneer America Income Trust - -------------------------------------------------------------------------------- PORTFOLIO MANAGEMENT DISCUSSION 6/30/06 - -------------------------------------------------------------------------------- During a period of solid economic growth and steadily rising interest rates, yields on U.S. Treasury securities rose, and shareholders in Pioneer America Income Trust earned a relatively high level of income during the first half of 2006. In the interview below, Richard Schlanger, who is responsible for day-to-day management of the Trust, discusses the factors that affected the fixed-income market and the Trust over the semiannual period. Q: How did the Trust perform during the period? A: For the six months ended June 30, 2006, Class A shares of Pioneer America Income Trust produced a total return of -1.68% at net asset value. The Trust underperformed its benchmark indices, the Lehman Brothers Government Bond Index, which returned -0.89%, and the Lehman Brothers Fixed-Rate Mortgage-Backed Securities Index, which returned -0.06% for the same period. The Trust also slightly lagged the average -1.61% return generated by the General U.S. Government Funds category of Lipper Inc., an independent monitor of mutual fund performance. During the six months, the Trust's yield rose dramatically from 3.50% to 5.23%. At the end of the period, the 30-day SEC yield for Class A shares was 3.80%. The Trust had 256 issues, and the average credit quality of the portfolio was AAA, as measured by Standard & Poor's. Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Q: What was the investment environment like during the six months? A: In a period of relatively strong economic growth and higher prices for commodities, concerns about the prospect of accelerating inflation dominated the fixed-income markets. At the Federal Reserve, the Alan Greenspan era came to a close, and Ben Bernanke became chairman in early February. When Mr. Bernanke took office, the Federal funds target rate was 4.50%. In the first five months of his chairmanship, the Federal funds rate rose to 5.25%, with the 4 Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- latest one-quarter percentage point increase occurring on June 29. (The Federal funds rate is the rate banks charge for overnight loans. Since June 2004, the Federal Reserve has raised interest rates 17 times, taking the Federal funds rate from a 40-year low of 1% to the current 5.25%.) In the most recent six-month period, yields across the maturity spectrum moved higher in a parallel fashion. Q: How did you manage the Trust in this environment? A: As higher interest rates boosted mortgage rates, we became concerned about the duration, or sensitivity to interest-rate changes, of our mortgage holdings because as interest rates go up, mortgage duration tends to lengthen when refinancing and prepayment activity slows. To limit this drift in duration, we trimmed our Ginnie Mae position from 59% of net assets to 55%. (Ginnie Mae securities are issued by the Government National Mortgage Association and are backed by the full faith and credit of the U.S. Government.) Instead of allowing duration passively to drift upward, we chose to focus on longer-term Treasury securities. This positioning is consistent with our belief that with each additional interest-rate hike, we were approaching the end of the Federal Reserve's tightening cycle. We thought that if the Federal Reserve went too far in raising rates, economic growth would slow, and the central bank would have to reverse course and begin lowering rates. If this were to occur, we believe the Treasury market would rally, and longer-term Treasuries would outperform their short-term counterparts. As conditions warranted, we opportunistically added to or sold holdings in Treasury Inflation Protected Securities (TIPS). TIPS are securities whose principal is tied to the consumer price index, a monthly indicator that measures the price inflation of a representative basket of goods and services. When inflation accelerates, the principal on TIPS increases in value. The interest-rate payment on TIPS is calculated on the inflated principal. At the end of the six-month period, 55.3% of the portfolio was in mortgage pass-through securities issued by Ginnie Mae, 43.6% was in Treasury securities, including TIPS, and 1.1% was in cash. 5 Pioneer America Income Trust - -------------------------------------------------------------------------------- PORTFOLIO MANAGEMENT DISCUSSION 6/30/06 (continued) - -------------------------------------------------------------------------------- Q: What contributed to performance? A: The shorter-duration assets aided returns, as interest rates rose. Over the period, short-term Treasuries produced a return of 0.80%. Returns on longer-term Treasuries were negative. The positions in Ginnie Mae securities and in TIPS also contributed to performance, as TIPS and mortgages outperformed fixed-rate Treasuries. Q: What detracted from performance? A: Because the Federal Reserve was determined to fight inflation by raising interest rates, long-duration assets vastly underperformed short-duration assets. As a result, the Trust's longer-duration assets were the biggest detractors from performance. For the six months, five-year and 10-year Treasuries returned -1.35% and -3.90%, respectively. We view the underperformance of longer-duration assets as a relatively short-term event, because we believe that once the Federal Reserve stops raising interest rates, securities with longer durations have the potential to outperform. Q: What is your outlook? A: We believe that rising interest rates and oil prices have begun to affect the mortgage market and consumer spending. We have seen a shift away from adjustable-rate mortgages to fixed-rate mortgages and a decline in refinance activity as mortgage rates have risen. There has also been evidence of a decline in disposable income, and some discount retailers have reported slower sales. If these trends continue, economic growth is likely to slow, and the Federal Reserve may take a breather from raising interest rates. We believe the portfolio is positioned to take advantage of this type of environment. Our investments are scattered across the yield curve. Should rates stabilize or decline, we believe the portfolio's intermediate-term and longer-term holdings could outperform. When interest rates rise, the prices of fixed-income securities in the Trust will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities in the Trust will generally rise. Prepayment risk is the chance that mortgage-backed bonds will be paid off early if falling interest rates prompt homeowners to refinance their mortgages. Forced to reinvest the unanticipated proceeds at lower interest rates, the Trust would experience a 6 Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- decline in income and lose the opportunity for additional price appreciation associated with falling interest rates. The Trust may invest in mortgage-backed securities, which during times of fluctuating interest rates may increase or decrease more than other fixed-income securities. Mortgage-backed securities are also subject to pre-payments. Government guarantees apply to the underlying securities only and not to the prices and yields of the portfolio. At times, the Trust's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Any information in this shareholder report regarding market or economic trends or the factors influencing the Trust's historical or future performance are statements of the opinion of Trust management as of the date of this report. These opinions should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. 7 Pioneer America Income Trust - -------------------------------------------------------------------------------- PORTFOLIO SUMMARY 6/30/06 - -------------------------------------------------------------------------------- Portfolio Diversification - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING TABLE WAS DEPICTED AS A PIE CHART IN THE PRINTED MATERIAL.] U.S. Government Agency Obligations 98.9% Temporary Cash Investments 1.1 Portfolio Maturity - -------------------------------------------------------------------------------- (Effective life as a percentage of total investment portfolio) [THE FOLLOWING TABLE WAS DEPICTED AS A PIE CHART IN THE PRINTED MATERIAL.] 0-1 Year 1.9% 1-3 Years 6.6 3-4 Years 36.1 4-6 Years 32.9 6-8 Years 14.8 8+ Years 7.7 10 Largest Holdings - -------------------------------------------------------------------------------- (As a percentage of debt holdings)* 1. U.S. Treasury Inflation Protected Security, 3.0%, 7/15/12 7.53% 2. U.S. Treasury Bonds, 7.25%, 5/15/16 7.15 3. U.S. Treasury Notes, 6.5%, 2/15/10 4.75 4. U.S. Treasury Notes, 4.0%, 11/15/12 3.96 5. U.S. Treasury Notes, 6.375%, 8/15/27 3.77 6. U.S. Treasury Notes, 4.75%, 5/15/14 2.61 7. Government National Mortgage Association II, 5.5%, 11/20/34 2.38 8. U.S. Treasury Bonds, 4.0%, 2/15/14 2.29 9. U.S. Treasury Notes, 6.25%, 8/15/23 1.86 10. U.S. Treasury Bonds, 4.25%, 11/15/14 1.70 * This list excludes temporary cash investments and derivative instruments. Portfolio holdings will vary for other periods. 8 Pioneer America Income Trust - ----------------------------------------------------------------------------- PRICES AND DISTRIBUTIONS Net Asset Value Per Share - -------------------------------------------------------------------------------- Class 6/30/06 12/31/05 ----- ------- -------- A $9.18 $9.54 B $9.13 $9.49 C $9.16 $9.51 Investor Class $9.18 $9.54 R $9.26 $9.62 Distributions Per Share - -------------------------------------------------------------------------------- 1/1/06 - 6/30/06 ------------------------------------------ Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ----- ------ ------------- ------------- A $0.2010 $ - $ - B $0.1594 $ - $ - C $0.1656 $ - $ - Investor Class $0.2215 $ - $ - R $0.1941 $ - $ - - -------------------------------------------------------------------------------- INDEX DEFINITIONS - -------------------------------------------------------------------------------- The Lehman Brothers Government Bond Index measures the performance of the U.S. government bond market. The Lehman Brothers Fixed-Rate Mortgage-Backed Securities Index is an unmanaged index including 15- and 30-year fixed rate securities backed by mortgage pools of the Government National Mortgage Association (GNMA), Federal Home Loan Mortgage Corporation (FHLMC) and Federal National Mortgage Association (FNMA). Index returns assume reinvestment of dividends and, unlike Trust returns, do not reflect any fees, expenses or sales charges. You cannot invest directly in the Indexes. The indexes defined here pertain to the "Value of $10,000 Investment" charts shown on pages 10-14. 9 Pioneer America Income Trust - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 CLASS A SHARES - -------------------------------------------------------------------------------- Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer America Income Trust at public offering price, compared to that of the Lehman Brothers Government Bond Index and Lehman Brothers Fixed-Rate Mortgage-Backed Securities Index. - ------------------------------------------ Average Annual Total Returns (As of June 30, 2006) Net Asset Public Value Offering Period (NAV) Price (POP) 10 Years 4.89% 4.40% 5 Years 3.48 2.53 1 Year -1.83 -6.25 - ------------------------------------------ [THE FOLLOWING TABLE WAS DEPICTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL.] Value of $10,000 Investment Lehman Brothers Fixed-Rate Pioneer America Mortgage-Backed Lehman Brothers Income Trust Securities Index Government Bond Index 6/96 $ 9,545 $10,000 $10,000 10,227 10,910 10,740 6/98 11,164 11,884 11,948 11,345 12,360 12,312 6/00 11,872 12,982 12,929 12,968 14,447 14,265 6/02 13,968 15,744 15,521 14,985 16,645 17,281 6/04 14,929 17,016 17,047 15,673 18,060 18,180 6/06 15,386 18,131 17,968 Call 1-800-225-6292 or visit pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 4.50% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Trust performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Trust distributions or the redemption of Trust shares. 10 Pioneer America Income Trust - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 CLASS B SHARES - -------------------------------------------------------------------------------- Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer America Income Trust, compared to that of the Lehman Brothers Government Bond Index and Lehman Brothers Fixed-Rate Mortgage-Backed Securities Index. - ---------------------------------------- Average Annual Total Returns (As of June 30, 2006) If If Period Held Redeemed 10 Years 4.05% 4.05% 5 Years 2.62 2.62 1 Year -2.60 -6.36 - ---------------------------------------- [THE FOLLOWING TABLE WAS DEPICTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL.] Value of $10,000 Investment Lehman Brothers Fixed-Rate Pioneer America Mortgage-Backed Lehman Brothers Income Trust Securities Index Government Bond Index 6/96 $10,000 $10,000 $10,000 10,629 10,910 10,740 6/98 11,513 11,884 11,948 11,624 12,360 12,312 6/00 12,060 12,982 12,929 13,071 14,447 14,265 6/02 13,956 15,744 15,521 14,847 16,645 17,281 6/04 14,668 17,016 17,047 15,272 18,060 18,180 6/06 14,875 18,131 17,968 Call 1-800-225-6292 or visit pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CSDC). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for class B shares continues to be 4%. For more complete information, please see the prospectus for details. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit pioneerinvestments.com/bshares. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Trust performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Trust distributions or the redemption of Trust shares. 11 Pioneer America Income Trust - ----------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 CLASS C SHARES - ----------------------------------------------------------------------------- Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer America Income Trust, compared to that of the Lehman Brothers Government Bond Index and Lehman Brothers Fixed-Rate Mortgage-Backed Securities Index. Average Annual Total Returns (As of June 30, 2006) - ---------------------------------------- If If Period Held Redeemed 10 Years 4.11% 4.11% 5 Years 2.75 2.75 1 Year -2.46 -2.46 - ---------------------------------------- [THE FOLLOWING TABLE WAS DEPICTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL.] Value of $10,000 Investment Lehman Brothers Fixed-Rate Pioneer America Mortgage-Backed Lehman Brothers Income Trust Securities Index Government Bond Index 6/96 $10,000 $10,000 $10,000 10,623 10,910 10,740 6/98 11,507 11,884 11,948 11,629 12,360 12,312 6/00 12,087 12,982 12,929 13,059 14,447 14,265 6/02 13,981 15,744 15,521 14,871 16,645 17,281 6/04 14,712 17,016 17,047 15,331 18,060 18,180 6/06 14,954 18,131 17,968 Call 1-800-225-6292 or visit pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). The performance of Class C shares does not reflect the 1% front-end sales charge in effect prior to February 1, 2004. If you paid a 1% sales charge, your returns would be lower than those shown above. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Trust performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Trust distributions or the redemption of Trust shares. 12 Pioneer America Income Trust - ----------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 INVESTOR CLASS SHARES - ----------------------------------------------------------------------------- Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer America Income Trust, compared to that of the Lehman Brothers Government Bond Index and Lehman Brothers Fixed-Rate Mortgage-Backed Securities Index. - ---------------------------------------- Average Annual Total Returns (As of June 30, 2006) If If Period Held Redeemed Life-of-Class (12/10/04) 0.47% 0.47% 1 Year -1.30 -1.30 - ---------------------------------------- [THE FOLLOWING TABLE WAS DEPICTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL.] Value of $10,000 Investment Lehman Brothers Fixed-Rate Pioneer America Mortgage-Backed Lehman Brothers Income Trust Securities Index Government Bond Index 12/04 $10,000 $10,000 $10,000 6/05 10,210 10,215 10,293 6/06 10,077 10,255 10,173 Call 1-800-225-6292 or visit pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Certain Pioneer funds (the "Funds") issued Investor Class shares in connection with the reorganization of Safeco mutual funds. The Funds are not offering additional Investor Class shares except in connection with the reinvestment of dividends on the Funds' outstanding Investor Class shares. All Investor Class shares of the Funds, whenever issued, convert to Class A shares of their respective Funds on December 10, 2006. Investor Class shares are not subject to sales charges. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Trust performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table does not reflect the deduction of fees and taxes that a shareowner would pay on Trust distributions or the redemption of Trust shares. 13 Pioneer America Income Trust - ----------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 CLASS R SHARES - ----------------------------------------------------------------------------- Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer America Income Trust, compared to that of the Lehman Brothers Government Bond Index and Lehman Brothers Fixed-Rate Mortgage-Backed Securities Index. - ---------------------------------------- Average Annual Total Returns (As of June 30, 2006) If If Period Held Redeemed 10 Years 4.49% 4.49% 5 Years 3.20 3.20 1 Year -2.07 -2.07 - ---------------------------------------- [THE FOLLOWING TABLE WAS DEPICTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL.] Value of $10,000 Investment Lehman Brothers Fixed-Rate Pioneer America Mortgage-Backed Lehman Brothers Income Trust Securities Index Government Bond Index 6/96 $10,000 $10,000 $10,000 10,660 10,910 10,740 6/98 11,579 11,884 11,948 11,708 12,360 12,312 6/00 12,192 12,982 12,929 13,250 14,447 14,265 6/02 14,202 15,744 15,521 15,171 16,645 17,281 6/04 15,111 17,016 17,047 15,840 18,060 18,180 6/06 15,511 18,131 17,968 Call 1-800-225-6292 or visit pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. The performance of Class R shares for the period prior to the commencement of operations of Class R shares on April 1, 2003 is based on the performance of Class A shares, reduced to reflect the higher distribution and service fees of Class R shares. For the period after April 1, 2003, the actual performance of Class R shares is reflected, which performance may be influenced by the smaller asset size of Class R shares compared to Class A shares. Class R shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Trust performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Trust distributions or the redemption of Trust shares. 14 Pioneer America Income Trust - -------------------------------------------------------------------------------- COMPARING ONGOING FUND EXPENSES - -------------------------------------------------------------------------------- As a shareowner in the Trust, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Trust expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Trust and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Trust's latest six-month period and held throughout the six months. Using the Tables Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: 1. Divide your account value by $1,000 Example: an $8,600 account value [DIVIDED BY] $1,000 = 8.6 2. Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer America Income Trust Based on actual returns from January 1, 2006 through June 30, 2006 Investor Share Class A B C Class R - -------------------------------------------------------------------------------------------------- Beginning Account Value $1,000.00 $1,000.00 $1,000.00 $1,000.00 $1,000.00 On 1/1/06 Ending Account Value $ 983.20 $ 978.70 $ 980.50 $ 985.40 $ 982.60 On 6/30/06 Expenses Paid During $ 5.75 $ 10.01 $ 9.23 $ 3.64 $ 6.83 Period* * Expenses are equal to the Trust's annualized expense ratio of 1.17%, 2.04%, 1.88%, 1.39% and 0.74%, for Class A, Class B, Class C, Class R and Investor Class shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). 15 Pioneer America Income Trust - -------------------------------------------------------------------------------- COMPARING ONGOING FUND EXPENSES (continued) - -------------------------------------------------------------------------------- Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Trust's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Trust's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Trust and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer America Income Trust Based on a hypothetical 5% per year return before expenses, reflecting the period from January 1, 2006 through June 30, 2006 Investor Share Class A B C Class R - ----------------------------------------------------------------------------------------- Beginning Account Value $1,000.00 $1,000.00 $1,000.00 $1,000.00 $1,000.00 On 1/1/06 Ending Account Value $1,018.99 $1,019.68 $1,015.47 $1,021.12 $1,017.90 On 6/30/06 Expenses Paid During $ 5.86 $ 10.19 $ 9.39 $ 3.71 $ 6.95 Period* * Expenses are equal to the Trust's annualized expense ratio of 1.17%, 2.04%, 1.88%, 1.39% and 0.74%, for Class A, Class B, Class C, Class R and Investor Class shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). 16 Pioneer America Income Trust - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - 98.4% $ 460,926 Government National Mortgage Association, 4.5%, 4/15/18 $ 439,387 787,956 Government National Mortgage Association, 4.5%, 6/15/19 751,080 741,298 Government National Mortgage Association, 4.5%, 6/15/19 706,606 324,745 Government National Mortgage Association, 4.5%, 8/15/19 309,547 157,658 Government National Mortgage Association, 4.5%, 12/15/19 150,280 853,487 Government National Mortgage Association, 4.5%, 4/15/20 813,115 714,174 Government National Mortgage Association, 4.5%, 8/15/33 656,982 1,697,418 Government National Mortgage Association, 4.5%, 6/15/34 1,560,275 1,206,836 Government National Mortgage Association, 4.5%, 6/15/34 1,109,329 750,000 Government National Mortgage Association, 4.5%, 7/20/34 704,901 684,895 Government National Mortgage Association, 4.5%, 1/15/35 628,981 653,768 Government National Mortgage Association, 5.0%, 2/15/19 634,773 359,429 Government National Mortgage Association, 5.0%, 1/20/20 347,742 433,399 Government National Mortgage Association, 5.0%, 2/15/20 420,623 454,540 Government National Mortgage Association, 5.0%, 10/15/20 441,141 550,124 Government National Mortgage Association, 5.0%, 9/15/33 521,169 1,018,686 Government National Mortgage Association, 5.0%, 3/15/34 965,252 827,694 Government National Mortgage Association, 5.0%, 5/15/34 784,278 817,091 Government National Mortgage Association, 5.0%, 4/15/35 773,557 The accompanying notes are an integral part of these financial statements. 17 Pioneer America Income Trust - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 496,207 Government National Mortgage Association, 5.0%, 6/15/35 $ 469,770 211,622 Government National Mortgage Association, 5.5%, 6/15/18 209,216 1,112,409 Government National Mortgage Association, 5.5%, 2/15/19 1,099,786 327,983 Government National Mortgage Association, 5.5%, 4/15/19 324,176 728,937 Government National Mortgage Association, 5.5%, 7/15/19 720,474 1,153,516 Government National Mortgage Association, 5.5%, 7/15/19 1,140,124 542,927 Government National Mortgage Association, 5.5%, 10/15/19 536,623 783,288 Government National Mortgage Association, 5.5%, 1/15/29 761,555 308,166 Government National Mortgage Association, 5.5%, 4/15/31 299,253 470,888 Government National Mortgage Association, 5.5%, 5/15/33 456,996 938,388 Government National Mortgage Association, 5.5%, 5/15/33 910,703 1,389,803 Government National Mortgage Association, 5.5%, 7/15/33 1,348,801 872,431 Government National Mortgage Association, 5.5%, 8/15/33 846,693 234,053 Government National Mortgage Association, 5.5%, 9/15/33 227,289 1,799,930 Government National Mortgage Association, 5.5%, 9/15/33 1,746,829 627,414 Government National Mortgage Association, 5.5%, 10/15/33 608,904 1,182,937 Government National Mortgage Association, 5.5%, 4/15/34 1,147,599 359,376 Government National Mortgage Association, 5.5%, 10/15/34 348,640 863,654 Government National Mortgage Association, 5.5%, 10/15/34 837,854 18 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 2,147,062 Government National Mortgage Association, 5.5%, 11/15/34 $ 2,082,922 2,239,308 Government National Mortgage Association, 5.5%, 11/15/34 2,172,413 75,815 Government National Mortgage Association, 6.0%, 1/15/24 75,503 399,065 Government National Mortgage Association, 6.0%, 4/15/28 397,378 22,488 Government National Mortgage Association, 6.0%, 10/15/28 22,375 191,021 Government National Mortgage Association, 6.0%, 11/15/28 190,064 627,859 Government National Mortgage Association, 6.0%, 9/15/32 623,751 971,597 Government National Mortgage Association, 6.0%, 9/15/32 965,241 106,587 Government National Mortgage Association, 6.0%, 10/15/32 105,890 320,846 Government National Mortgage Association, 6.0%, 10/15/32 318,747 405,221 Government National Mortgage Association, 6.0%, 10/15/32 402,570 564,771 Government National Mortgage Association, 6.0%, 10/15/32 561,075 1,029,575 Government National Mortgage Association, 6.0%, 10/15/32 1,024,174 1,353,230 Government National Mortgage Association, 6.0%, 10/15/32 1,344,376 115,005 Government National Mortgage Association, 6.0%, 11/15/32 114,253 123,483 Government National Mortgage Association, 6.0%, 11/15/32 122,675 958,009 Government National Mortgage Association, 6.0%, 11/15/32 951,872 1,205,686 Government National Mortgage Association, 6.0%, 11/15/32 1,199,373 1,228,460 Government National Mortgage Association, 6.0%, 11/15/32 1,222,160 The accompanying notes are an integral part of these financial statements. 19 Pioneer America Income Trust - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 111,368 Government National Mortgage Association, 6.0%, 12/15/32 $ 110,639 156,167 Government National Mortgage Association, 6.0%, 12/15/32 155,145 354,230 Government National Mortgage Association, 6.0%, 12/15/32 352,042 378,769 Government National Mortgage Association, 6.0%, 12/15/32 376,663 681,442 Government National Mortgage Association, 6.0%, 12/15/32 678,069 885,229 Government National Mortgage Association, 6.0%, 12/15/32 880,594 990,692 Government National Mortgage Association, 6.0%, 12/15/32 985,453 1,014,686 Government National Mortgage Association, 6.0%, 12/15/32 1,009,330 315,017 Government National Mortgage Association, 6.0%, 1/15/33 312,913 443,290 Government National Mortgage Association, 6.0%, 1/15/33 440,396 1,264,220 Government National Mortgage Association, 6.0%, 1/15/33 1,257,547 1,299,568 Government National Mortgage Association, 6.0%, 1/15/33 1,292,720 719,861 Government National Mortgage Association, 6.0%, 1/20/33 713,252 101,157 Government National Mortgage Association, 6.0%, 2/15/33 100,481 378,356 Government National Mortgage Association, 6.0%, 2/15/33 375,828 517,883 Government National Mortgage Association, 6.0%, 2/15/33 514,423 699,483 Government National Mortgage Association, 6.0%, 2/15/33 694,810 782,745 Government National Mortgage Association, 6.0%, 2/15/33 777,516 162,213 Government National Mortgage Association, 6.0%, 3/15/33 161,129 20 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 276,121 Government National Mortgage Association, 6.0%, 3/15/33 $ 274,276 357,380 Government National Mortgage Association, 6.0%, 3/15/33 354,992 235,845 Government National Mortgage Association, 6.0%, 4/15/33 234,270 1,319,275 Government National Mortgage Association, 6.0%, 4/15/33 1,312,277 278,070 Government National Mortgage Association, 6.0%, 5/15/33 276,213 292,030 Government National Mortgage Association, 6.0%, 9/15/33 290,079 721,163 Government National Mortgage Association, 6.0%, 11/15/33 716,345 732,351 Government National Mortgage Association, 6.0%, 3/15/34 727,279 607,703 Government National Mortgage Association, 6.0%, 6/15/34 603,494 317,646 Government National Mortgage Association, 6.0%, 8/15/34 315,748 789,862 Government National Mortgage Association, 6.0%, 8/15/34 784,392 307,369 Government National Mortgage Association, 6.0%, 9/15/34 305,240 252,160 Government National Mortgage Association, 6.0%, 10/15/34 250,414 272,718 Government National Mortgage Association, 6.0%, 10/15/34 270,830 1,000,301 Government National Mortgage Association, 6.0%, 10/15/34 993,374 921,696 Government National Mortgage Association, 6.0%, 9/15/35 914,500 1,625,000 Government National Mortgage Association, 6.0%, 6/1/36 1,612,351 600,000 Government National Mortgage Association, 6.0%, 7/1/36 594,937 203,759 Government National Mortgage Association, 6.5%, 4/15/17 207,367 The accompanying notes are an integral part of these financial statements. 21 Pioneer America Income Trust - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 85,763 Government National Mortgage Association, 6.5%, 6/15/17 $ 87,282 201,004 Government National Mortgage Association, 6.5%, 2/15/28 204,111 395,244 Government National Mortgage Association, 6.5%, 3/15/28 401,294 101,653 Government National Mortgage Association, 6.5%, 4/15/28 103,225 164,567 Government National Mortgage Association, 6.5%, 4/15/28 167,102 65,956 Government National Mortgage Association, 6.5%, 6/15/28 66,971 97,470 Government National Mortgage Association, 6.5%, 8/15/28 98,977 200,601 Government National Mortgage Association, 6.5%, 10/15/28 203,702 138,147 Government National Mortgage Association, 6.5%, 3/15/29 140,255 309,632 Government National Mortgage Association, 6.5%, 3/15/29 314,356 58,216 Government National Mortgage Association, 6.5%, 5/15/29 59,104 37,112 Government National Mortgage Association, 6.5%, 6/15/29 37,678 13,758 Government National Mortgage Association, 6.5%, 6/15/31 13,949 20,344 Government National Mortgage Association, 6.5%, 6/15/31 20,626 53,899 Government National Mortgage Association, 6.5%, 6/15/31 54,646 113,843 Government National Mortgage Association, 6.5%, 6/15/31 115,421 299,701 Government National Mortgage Association, 6.5%, 7/15/31 303,855 54,858 Government National Mortgage Association, 6.5%, 8/15/31 55,618 130,488 Government National Mortgage Association, 6.5%, 9/15/31 132,296 22 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 207,148 Government National Mortgage Association, 6.5%, 9/15/31 $ 210,020 5,767 Government National Mortgage Association, 6.5%, 10/15/31 5,847 136,276 Government National Mortgage Association, 6.5%, 1/15/32 138,093 782,790 Government National Mortgage Association, 6.5%, 1/15/32 795,732 56,217 Government National Mortgage Association, 6.5%, 2/15/32 56,967 101,344 Government National Mortgage Association, 6.5%, 2/15/32 102,695 141,519 Government National Mortgage Association, 6.5%, 2/15/32 143,405 187,468 Government National Mortgage Association, 6.5%, 2/15/32 189,967 204,422 Government National Mortgage Association, 6.5%, 2/15/32 207,147 236,715 Government National Mortgage Association, 6.5%, 2/15/32 239,871 568,466 Government National Mortgage Association, 6.5%, 3/15/32 576,044 81,003 Government National Mortgage Association, 6.5%, 4/15/32 82,083 147,383 Government National Mortgage Association, 6.5%, 4/15/32 149,347 415,232 Government National Mortgage Association, 6.5%, 4/15/33 420,646 584,972 Government National Mortgage Association, 6.5%, 4/15/32 592,770 16,460 Government National Mortgage Association, 6.5%, 5/15/32 16,680 40,084 Government National Mortgage Association, 6.5%, 5/15/32 40,619 84,549 Government National Mortgage Association, 6.5%, 5/15/32 85,676 538,787 Government National Mortgage Association, 6.5%, 5/15/32 545,970 The accompanying notes are an integral part of these financial statements. 23 Pioneer America Income Trust - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 40,226 Government National Mortgage Association, 6.5%, 6/15/32 $ 40,762 67,748 Government National Mortgage Association, 6.5%, 6/15/32 68,652 143,411 Government National Mortgage Association, 6.5%, 6/15/32 145,504 108,353 Government National Mortgage Association, 6.5%, 7/15/32 109,797 264,950 Government National Mortgage Association, 6.5%, 7/15/32 268,482 278,999 Government National Mortgage Association, 6.5%, 8/15/32 282,719 298,411 Government National Mortgage Association, 6.5%, 8/15/32 302,957 226,945 Government National Mortgage Association, 6.5%, 9/15/32 229,970 112,559 Government National Mortgage Association, 7.0%, 10/15/16 116,005 422,671 Government National Mortgage Association, 7.0%, 9/15/24 435,930 238,019 Government National Mortgage Association, 7.0%, 7/15/25 245,505 71,792 Government National Mortgage Association, 7.0%, 11/15/26 74,118 95,175 Government National Mortgage Association, 7.0%, 2/15/28 98,193 75,422 Government National Mortgage Association, 7.0%, 3/15/28 77,814 174,523 Government National Mortgage Association, 7.0%, 4/15/28 180,057 155,282 Government National Mortgage Association, 7.0%, 7/15/28 160,369 160,371 Government National Mortgage Association, 7.0%, 5/15/29 165,496 49,638 Government National Mortgage Association, 7.0%, 6/15/29 51,225 76,576 Government National Mortgage Association, 7.0%, 7/15/29 79,024 24 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 59,007 Government National Mortgage Association, 7.0%, 9/15/29 $ 60,893 139,243 Government National Mortgage Association, 7.0%, 11/15/29 143,693 94,157 Government National Mortgage Association, 7.0%, 1/15/30 97,157 64,609 Government National Mortgage Association, 7.0%, 2/15/31 66,659 32,552 Government National Mortgage Association, 7.0%, 5/15/31 33,585 55,015 Government National Mortgage Association, 7.0%, 6/15/31 56,761 160,161 Government National Mortgage Association, 7.0%, 9/15/31 165,243 40,981 Government National Mortgage Association, 7.0%, 10/15/31 42,281 45,017 Government National Mortgage Association, 7.0%, 11/15/31 46,446 97,097 Government National Mortgage Association, 7.0%, 2/15/32 100,163 353,528 Government National Mortgage Association, 7.0%, 3/15/32 364,692 130,945 Government National Mortgage Association, 7.0%, 4/15/32 135,080 119,089 Government National Mortgage Association, 7.5%, 2/15/27 124,769 230,965 Government National Mortgage Association, 7.5%, 10/15/27 241,980 126,556 Government National Mortgage Association, 7.5%, 4/15/29 130,600 43,382 Government National Mortgage Association, 7.5%, 6/15/29 45,393 7,073 Government National Mortgage Association, 7.5%, 8/15/29 7,398 12,763 Government National Mortgage Association, 7.5%, 9/15/30 13,343 178,810 Government National Mortgage Association, 7.5%, 11/15/30 186,934 The accompanying notes are an integral part of these financial statements. 25 Pioneer America Income Trust - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 20,481 Government National Mortgage Association, 7.5%, 2/15/31 $ 21,406 74,231 Government National Mortgage Association, 7.5%, 12/15/31 77,583 15,687 Government National Mortgage Association, 7.5%, 1/15/32 16,394 67,422 Government National Mortgage Association, 7.5%, 1/15/32 70,464 117,161 Government National Mortgage Association, 7.5%, 3/15/32 122,447 78,316 Government National Mortgage Association, 8.0%, 12/1/29 83,235 280,328 Government National Mortgage Association, 8.25%, 5/15/20 298,539 41,158 Government National Mortgage Association, 8.5%, 7/15/24 44,446 211 Government National Mortgage Association, 9.0%, 9/15/16 226 4,806 Government National Mortgage Association, 9.0%, 10/15/16 5,144 4,129 Government National Mortgage Association, 9.0%, 4/15/20 4,446 58,356 Government National Mortgage Association, 10.0%, 1/15/19 63,609 34,176 Government National Mortgage Association, 10.0%, 3/15/20 37,286 228,129 Government National Mortgage Association I, 6.5%, 11/15/31 231,291 83,098 Government National Mortgage Association I, 6.5%, 12/15/31 84,250 39,114 Government National Mortgage Association I, 6.5%, 1/15/32 40,087 57,641 Government National Mortgage Association I, 6.5%, 1/15/32 58,409 179,172 Government National Mortgage Association I, 6.5%, 1/15/32 181,560 156,284 Government National Mortgage Association I, 6.5%, 5/15/32 158,368 26 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 198,907 Government National Mortgage Association I, 6.5%, 9/15/32 $ 201,558 180,962 Government National Mortgage Association I, 7.0%, 8/15/23 186,639 216,116 Government National Mortgage Association I, 7.0%, 9/15/29 226,028 73,104 Government National Mortgage Association I, 7.0%, 12/15/30 75,441 304,108 Government National Mortgage Association I, 7.0%, 12/15/30 313,831 178,705 Government National Mortgage Association I, 7.0%, 1/15/31 184,377 72,732 Government National Mortgage Association I, 7.0%, 4/15/31 75,041 13,064 Government National Mortgage Association I, 7.5%, 8/15/29 13,664 70,903 Government National Mortgage Association I, 7.5%, 3/15/31 74,105 665,825 Government National Mortgage Association II, 5.0%, 12/20/18 644,638 625,880 Government National Mortgage Association II, 5.0%, 2/20/19 605,719 1,840,234 Government National Mortgage Association II, 5.5%, 7/20/19 1,813,127 4,090,719 Government National Mortgage Association II, 5.5%, 11/20/34 3,951,908 230,335 Government National Mortgage Association II, 6.0%, 7/20/17 231,399 523,283 Government National Mortgage Association II, 6.0%, 12/20/18 525,791 291,103 Government National Mortgage Association II, 6.0%, 7/20/19 292,418 210,543 Government National Mortgage Association II, 6.0%, 10/20/31 208,651 1,245,799 Government National Mortgage Association II, 6.0%, 3/20/33 1,234,361 892,229 Government National Mortgage Association II, 6.0%, 10/20/33 887,091 The accompanying notes are an integral part of these financial statements. 27 Pioneer America Income Trust - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 2,173,747 Government National Mortgage Association II, 6.0%, 11/20/33 $ 2,153,790 444,093 Government National Mortgage Association II, 6.0%, 2/20/34 446,099 581,526 Government National Mortgage Association II, 6.0%, 6/20/34 576,045 141,968 Government National Mortgage Association II, 6.5%, 1/20/24 143,500 349,007 Government National Mortgage Association II, 6.5%, 8/20/28 353,062 113,636 Government National Mortgage Association II, 6.5%, 4/20/31 114,785 77,823 Government National Mortgage Association II, 6.5%, 6/20/31 78,610 304,619 Government National Mortgage Association II, 6.5%, 10/20/32 307,537 443,064 Government National Mortgage Association II, 6.5%, 10/20/33 447,179 431,484 Government National Mortgage Association II, 6.5%, 3/20/34 435,390 17,459 Government National Mortgage Association II, 7.0%, 12/20/08 17,603 67,089 Government National Mortgage Association II, 7.0%, 5/20/26 68,819 88,510 Government National Mortgage Association II, 7.0%, 1/20/31 90,710 148,197 Government National Mortgage Association II, 7.0%, 7/20/31 151,882 59,681 Government National Mortgage Association II, 7.0%, 11/20/31 61,165 23,754 Government National Mortgage Association II, 7.5%, 6/20/30 24,670 38,418 Government National Mortgage Association II, 7.5%, 12/20/30 39,900 327 Government National Mortgage Association II, 8.0%, 5/20/25 345 52,358 Government National Mortgage Association II, 8.0%, 3/20/30 55,326 28 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Principal Amount Value U.S. GOVERNMENT AND AGENCY OBLIGATIONS - (continued) $ 8,912 Government National Mortgage Association II, 9.0%, 9/20/21 $ 9,573 21,967 Government National Mortgage Association II, 9.0%, 3/20/22 23,624 4,140 Government National Mortgage Association II, 9.0%, 4/20/22 4,452 37,264 Government National Mortgage Association II, 9.0%, 11/20/24 40,157 4,100,000 U.S. Treasury Bonds, 4.0%, 2/15/14 3,808,834 2,800,000 U.S. Treasury Bonds, 6.25%, 8/15/23 3,088,095 250,000 U.S. Treasury Bonds, 6.5%, 11/15/26 286,797 10,270,000 U.S. Treasury Bonds, 7.25%, 5/15/16 11,891,541 12,156,015 U.S. Treasury Inflation Notes, 3.0%, 7/15/12 12,517,850 1,015 U.S. Treasury Inflation Protected Security, 2.375%, 4/15/11 1,011 1,134,480 U.S. Treasury Inflation Protected Security, 3.375%, 1/15/12 1,188,368 1,000,000 U.S. Treasury Notes, 3.5%, 12/15/09 949,492 7,000,000 U.S. Treasury Notes, 4.0%, 11/15/12 6,579,454 1,000,000 U.S. Treasury Notes, 4.0%, 2/15/15 921,484 3,000,000 U.S. Treasury Notes, 4.25%, 11/15/14 2,821,407 1,000,000 U.S. Treasury Notes, 4.5%, 2/15/09 984,180 1,500,000 U.S. Treasury Notes, 4.5%, 11/15/15 1,428,750 650,000 U.S. Treasury Notes, 4.75%, 11/15/08 644,186 4,450,000 U.S. Treasury Notes, 4.75%, 5/15/14 4,341,011 1,000,000 U.S. Treasury Notes, 4.875%, 5/31/11 989,844 1,000,000 U.S. Treasury Notes, 5.0%, 2/15/11 997,539 1,000,000 U.S. Treasury Notes, 5.375%, 2/15/31 1,017,266 2,000,000 U.S. Treasury Notes, 5.5%, 8/15/28 2,054,844 250,000 U.S. Treasury Notes, 6.125%, 8/15/29 277,969 5,525,000 U.S. Treasury Notes, 6.375%, 8/15/27 6,271,306 7,550,000 U.S. Treasury Notes, 6.5%, 2/15/10 7,888,278 1,000,000 U.S. Treasury Notes, 6.625%, 5/15/07 1,010,820 ------------ $166,209,665 ------------ TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS (Cost $172,764,165) $166,209,665 ------------ The accompanying notes are an integral part of these financial statements. 29 Pioneer America Income Trust - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) Principal Amount Value TEMPORARY CASH INVESTMENTS - 1.1% $ 1,800,000 Repurchase Agreement - 1.1% UBS Warburg, Inc. 4.40%, dated 7/3/06, with a repurchase price of $1,800,000 plus accrued interest on 7/3/06 collateralized by $1,841,000 U.S. Treasury Note, 6.125%, 11/15/06 $ 1,800,000 ------------ TOTAL REPURCHASE AGREEMENT (Cost $1,800,000) $ 1,800,000 ------------ TOTAL TEMPORARY CASH INVESTMENTS $ 1,800,000 ------------ TOTAL INVESTMENTS IN SECURITIES - 99.5% (Cost: $174,564,164) (a) $168,009,665 ------------ OTHER ASSETS AND LIABILITIES - 0.5% $ 899,911 ------------ TOTAL NET ASSETS - 100.0% $168,909,576 ============ * Non-income producing security. (a) At June, 30, 2006 the net unrealized gain on investments based on cost for federal income tax purposes of $175,965,808 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost. $ 493,321 Aggregate gross unrealized loss for all investments in which there is an excess of value over tax cost. (8,449,964) ----------- Net Unrealized loss $(7,956,143) =========== Purchases and sales of securities (excluding temporary cash investments) for the period ended June 30, 2006 aggregated $12,680,079 and $53,246,655, respectively. 30 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - ----------------------------------------------------------------------------- STATEMENT OF ASSETS AND LIABILITIES 6/30/06 (unaudited) - ----------------------------------------------------------------------------- ASSETS: Investment in securities, at value (cost $174,564,164) $168,009,665 Receivables - Investment securities sold 2,377,661 Fund shares sold 23,264 Interest 1,409,451 Due from Pioneer Investment Management, Inc. 1,234 Other 7,041 ------------- Total assets $171,828,316 ------------- LIABILITIES: Payables - Investment securities repurchased $ 2,206,142 Fund shares repurchased 290,288 Dividends 145,846 Due to bank 129,339 Due to affiliates 92,820 Accrued expenses 54,304 ------------- Total liabilities $ 2,918,739 ------------- NET ASSETS: Paid-in capital $192,543,532 Distributions in excess of net investment income (2,018,363) Accumulated net realized loss on investments (15,061,093) Net unrealized loss on investments (6,554,499) ------------- Total net assets $168,909,577 ============= NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $89,367,810/9,735,627 shares) $ 9.18 ============= Class B (based on $25,799,689/2,826,881 shares) $ 9.13 ============= Class C (based on $20,404,784/2,228,434 shares) $ 9.16 ============= Investor Class (based on $32,529,953/3,543,420 shares) $ 9.18 ============= Class R (based on $807,341/87,222 shares) $ 9.26 ============= MAXIMUM OFFERING PRICE: Class A ($9.18 - 95.5%) $ 9.61 ============= The accompanying notes are an integral part of these financial statements. 31 Pioneer America Income Trust - ----------------------------------------------------------------------------- STATEMENT OF OPERATIONS (unaudited) - ----------------------------------------------------------------------------- For the Six Months Ended 6/30/06 INVESTMENT INCOME: Interest $4,378,880 ---------- Total investment income $ 4,378,880 ----------- EXPENSES: Management fees $ 466,965 Transfer agent fees and expenses Class A 165,230 Class B 63,601 Class C 31,784 Investor Class 30,983 Class R 1,273 Distribution fees Class A 125,823 Class B 143,159 Class C 109,373 Class R 2,168 Administrative reimbursements 18,911 Custodian fees 8,871 Professional fees 26,603 Printing expense 18,549 Fees and expenses of nonaffiliated trustees 4,346 Miscellaneous 9,460 ---------- Total expenses $ 1,227,099 Less management fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (5,010) ----------- Net expenses $ 1,222,089 ----------- Net investment income $ 3,156,791 ----------- REALIZED AND UNREALIZED (LOSS) ON INVESTMENTS: Net realized loss on investments $(1,254,488) ----------- Change in net unrealized loss on investments $(5,243,676) ----------- Net loss on investments $(6,498,164) ----------- Net decrease in net assets resulting from operations $(3,341,373) =========== 32 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - ----------------------------------------------------------------------------- STATEMENTS OF CHANGES IN NET ASSETS - ----------------------------------------------------------------------------- For the Six Months Ended 6/30/06 and the Year Ended 12/31/05, respectively Six Months Ended Year 6/30/06 Ended (unaudited) 12/31/05 FROM OPERATIONS: Net investment income $ 3,156,791 $ 7,464,676 Net realized loss on investments (1,254,488) (873,555) Change in net unrealized loss on investments (5,243,676) (3,012,450) ------------- ------------- Net increase (decrease) in net assets resulting from operations $ (3,341,373) $ 3,578,671 ------------- ------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.20 and $0.43 per share, respectively) $ (2,160,182) $ (5,294,373) Class B ($0.16 and $0.35 per share, respectively) (491,794) (1,358,450) Class C ($0.17 and $0.36 per share, respectively) (390,279) (1,015,869) Investor Class ($0.22 and $0.47 per share, respectively) (839,127) (2,091,640) Class R ($0.19 and $0.42 per share, respectively) (17,913) (36,595) ------------- ------------- Total distributions to shareowners $ (3,899,295) $ (9,796,927) ------------- ------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 12,931,756 $ 64,972,188 Reinvestment of distributions 3,063,966 7,866,321 Cost of shares repurchased (55,912,911) (93,855,460) ------------- ------------- Net decrease in net assets resulting from Fund share transactions $ (39,917,189) $ (21,016,951) ------------- ------------- Net decrease in net assets $ (47,157,857) $ (27,235,207) NET ASSETS: Beginning of period 216,067,434 243,302,641 ------------- ------------- End of period (including distributions in excess of net investment income of $(2,018,363) and $(1,275,859) respectively) $ 168,909,577 $ 216,067,434 ============= ============= The accompanying notes are an integral part of these financial statements. 33 Pioneer America Income Trust - ----------------------------------------------------------------------------- STATEMENTS OF CHANGES IN NET ASSETS (continued) - ----------------------------------------------------------------------------- '06 Shares '06 Amounts (unaudited) (unaudited) '05 Shares '05 Amounts CLASS A Shares sold 830,222 $ 7,746,155 3,916,547 $ 37,903,879 Reinvestment of distributions 193,770 1,806,915 467,846 4,518,726 Less shares repurchased (3,490,342) (32,735,320) (4,796,419) (46,280,804) ---------- ------------- ---------- ------------- Net decrease (2,466,350) $ (23,182,250) (412,026) $ (3,858,199) ========== ============= ========== ============= CLASS B Shares sold 273,722 $ 2,533,599 1,574,294 $ 15,142,679 Reinvestment of distributions 39,223 363,541 104,681 1,005,146 Less shares repurchased (1,237,211) (11,578,052) (1,999,241) (19,127,579) ---------- ------------- ---------- ------------- Net decrease (924,266) $ (8,680,912) (320,266) $ (2,979,754) ========== ============= ========== ============= CLASS C Shares sold 272,463 $ 2,540,094 1,207,346 $ 11,667,546 Reinvestment of distributions 22,123 205,635 62,611 603,436 Less shares repurchased (671,383) (6,290,383) (1,513,783) (14,545,916) ---------- ------------- ---------- ------------- Net decrease (376,797) $ (3,544,654) (243,826) $ (2,274,934) ========== ============= ========== ============= INVESTOR CLASS Shares sold - $ - 2,184 $ 21,269 Reinvestment of distributions 72,401 675,190 177,302 1,713,471 Less shares repurchased (549,746) (5,130,871) (1,415,838) (13,728,062) ---------- ------------- ---------- ------------- Net decrease (477,345) $ (4,455,681) (1,236,352) $ (11,993,322) ========== ============= ========== ============= CLASS R Shares sold 11,874 $ 111,908 24,301 $ 236,815 Reinvestment of distributions 1,350 12,685 2,619 25,542 Less shares repurchased (19,026) (178,285) (17,753) (173,099) ---------- ------------- ---------- ------------- Net increase (decrease) (5,802) $ (53,692) 9,167 $ 89,258 ========== ============= ========== ============= 34 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Six Months Ended Year Year Year Year Year 6/30/06 Ended Ended Ended Ended Ended (unaudited) 12/31/05 12/31/04 12/31/03 12/31/02 12/31/01 (a) CLASS A Net asset value, beginning of period $ 9.54 $ 9.79 $ 9.95 $ 10.27 $ 9.79 $ 9.76 ------- -------- -------- -------- -------- -------- Increase (decrease) from investment operations: Net investment income $ 0.15 $ 0.32 $ 0.28 $ 0.28 $ 0.40 $ 0.52 Net realized and unrealized gain (loss) on investments (0.31) (0.14) (0.01) (0.13) 0.54 0.05 ------- -------- -------- -------- -------- -------- Net increase (decrease) from investment operations $ (0.16) $ 0.18 $ 0.27 $ 0.15 $ 0.94 $ 0.57 Distributions to shareowners: Net investment income (0.20) (0.43) (0.43) (0.47) (0.46) (0.51) Net realized gain - - - - - (0.03) ------- -------- -------- -------- -------- -------- Net increase (decrease) in net asset value $ (0.36) $ (0.25) $ (0.16) $ (0.32) $ 0.48 $ 0.03 ------- -------- -------- -------- -------- -------- Net asset value, end of period $ 9.18 $ 9.54 $ 9.79 $ 9.95 $ 10.27 $ 9.79 ======= ======== ======== ======== ======== ======== Total return* (1.68)% 1.84% 2.77% 1.47% 9.78% 5.92% Ratio of net expenses to average net assets+ 1.17%** 1.20% 1.16% 1.10% 1.00% 1.01% Ratio of net investment income to average net assets+ 3.52%** 3.36% 3.04% 2.85% 4.17% 5.14% Portfolio turnover rate 14%** 27% 27% 66% 76% 72% Net assets, end of period (in thousands) $89,368 $116,433 $123,524 $153,939 $164,393 $115,998 Ratios with no waiver of management fees by PIM and no reductions for fees paid indirectly: Net expenses 1.17%** 1.20% 1.16% 1.12% 1.08% 1.12% Net investment income 3.52%** 3.36% 3.04% 2.83% 4.09% 5.03% Ratios with waiver of management fees by PIM and reductions for fees paid indirectly: Net expenses 1.17%** 1.20% 1.16% 1.10% 1.00% 1.00% Net investment income 3.52%** 3.36% 3.04% 2.85% 4.18% 5.15% * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratio with no reduction for fees paid indirectly. (a) On January 1, 2001, the Trust began accreting discounts and amortizing premiums on debt securities. The effect of this charges for the year ended December 31, 2001, was to decrease net investment income by $0.02 per share, increase net realized and unrealized gain (loss) by $0.02 per share and decrease the ratio of net investment income to average net assets assuming waiver of management fees by PIM and reduction for fees paid indirectly from 5.35% to 5.15%. Per share ratios and supplemental data for periods prior to January 1, 2001, have not been restated to reflect this change in presentation. The accompanying notes are an integral part of these financial statements. 35 Pioneer America Income Trust - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Six Months Ended Year Year Year Year Year 6/30/06 Ended Ended Ended Ended Ended (unaudited) 12/31/05 12/31/04 12/31/03 12/31/02 12/31/01 (a) CLASS B Net asset value, beginning of period $ 9.49 $ 9.74 $ 9.89 $ 10.20 $ 9.76 $ 9.74 ------- ------- ------- ------- ------- ------- Increase (decrease) from investment operations: Net investment income $ 0.10 $ 0.24 $ 0.18 $ 0.19 $ 0.34 $ 0.44 Net realized and unrealized gain (loss) on investments (0.30) (0.14) 0.02 (0.12) 0.50 0.04 ------- ------- ------- ------- ------- ------- Net increase (decrease) from investment operations $ (0.20) $ 0.10 $ 0.20 $ 0.07 $ 0.84 $ 0.48 Distributions to shareowners: Net investment income (0.16) (0.35) (0.35) (0.38) (0.40) (0.42) Net realized gain - - - - - (0.04) ------- ------- ------- ------- ------- ------- Net increase (decrease) in net asset value $ (0.36) $ (0.25) $ (0.15) $ (0.31) $ 0.44 $ 0.02 ------- ------- ------- ------- ------- ------- Net asset value, end of period $ 9.13 $ 9.49 $ 9.74 $ 9.89 $ 10.20 $ 9.76 ======= ======== ======== ======== ======== ======== Total return* (2.13)% 0.99% 2.02% 0.69% 8.82% 4.99% Ratio of net expenses to average net assets+ 2.04%** 2.03% 1.98% 1.94% 1.80% 1.95% Ratio of net investment income to average net assets+ 2.64%** 2.56% 2.22% 2.02% 3.26% 4.18% Portfolio turnover rate 14%** 27% 27% 66% 76% 72% Net assets, end of period (in thousands) $25,800 $35,581 $39,641 $55,302 $67,013 $25,008 Ratios with no waiver of management fees by PIM and no reduction for fees paid indirectly: Net expenses 2.04%** 2.03% 1.98% 1.96% 1.88% 2.06% Net investment income 2.64%** 2.56% 2.22% 2.00% 3.19% 4.07% Ratios with waiver of management fees by PIM and reductions for fees paid indirectly: Net expenses 2.04%** 2.03% 1.98% 1.94% 1.79% 1.93% Net investment income 2.64%** 2.56% 2.22% 2.02% 3.27% 4.20% * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratio with no reduction for fees paid indirectly. (a) On January 1, 2001, the Trust began accreting discounts and amortizing premiums on debt securities. The effect of this charges for the year ended December 31, 2001, was to decrease net investment income by $0.02 per share, increase net realized and unrealized gain (loss) by $0.02 per share and decrease the ratio of net investment income to average net assets assuming waiver of management fees by PIM and reduction for fees paid indirectly from 4.36% to 4.20%. Per share ratios and supplemental data for periods prior to January 1, 2001, have not been restated to reflect this change in presentation. The accompanying notes are an integral part of these financial statements. 36 Pioneer America Income Trust - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Six Months Ended Year Year Year Year Year 6/30/06 Ended Ended Ended Ended Ended (unaudited) 12/31/05 12/31/04 12/31/03 12/31/02 12/31/01 (a) CLASS C Net asset value, beginning of period $ 9.51 $ 9.77 $ 9.92 $ 10.24 $ 9.79 $ 9.74 ------- ------- ------- ------- ------- ------- Increase (decrease) from investment operations: Net investment income $ 0.12 $ 0.24 $ 0.19 $ 0.21 $ 0.36 $ 0.46 Net realized and unrealized gain (loss) on investments (0.30) (0.14) 0.01 (0.13) 0.50 0.03 ------- ------- ------- ------- ------- ------- Net increase (decrease) from investment operations $ (0.18) $ 0.10 $ 0.20 $ 0.08 $ 0.86 $ 0.49 Distributions to shareowners: Net investment income (0.17) (0.36) (0.35) (0.40) (0.41) (0.43) Net realized gain - - - - - (0.01) ------- ------- ------- ------- ------- ------- Net increase (decrease) in net asset value $ (0.35) $ (0.26) $ (0.15) $ (0.32) $ 0.45 $ 0.05 ------- ------- ------- ------- ------- ------- Net asset value, end of period $ 9.16 $ 9.51 $ 9.77 $ 9.92 $ 10.24 $ 9.79 ======= ======= ======= ======= ======= ======= Total return* (1.95)% 1.02% 2.09% 0.75% 8.93% 5.05% Ratio of net expenses to average net assets+ 1.88%** 1.93% 1.89% 1.81% 1.77% 1.84% Ratio of net investment income to average net assets+ 2.79%** 2.70% 2.31% 2.14% 3.16% 4.22% Portfolio turnover rate 14%** 27% 27% 66% 76% 72% Net assets, end of period (in thousands) $20,405 $24,789 $27,832 $37,456 $38,258 $ 6,776 Ratios with no waiver of management fees by PIM and no reduction for fees paid indirectly: Net expenses 1.88%** 1.93% 1.89% 1.83% 1.84% 1.95% Net investment income 2.79%** 2.70% 2.31% 2.12% 3.08% 4.11% Ratios with waiver of management fees by PIM and reductions for fees paid indirectly: Net expenses 1.88%** 1.93% 1.89% 1.81% 1.76% 1.81% Net investment income 2.79%** 2.70% 2.31% 2.14% 3.16% 4.25% * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratio with no reduction for fees paid indirectly. (a) On January 1, 2001, the Trust began accreting discounts and amortizing premiums on debt securities. The effect of this changes for the year ended December 31, 2001, was to decrease net investment income by $0.01 per share, increase net realized and unrealized gain (loss) by $0.01 per share and decrease the ratio of net investment income to average net assets assuming waiver of management fees by PIM and reduction for fees paid indirectly from 4.42% to 4.25%. Per share ratios and supplemental data for periods prior to January 1, 2001, have not been restated to reflect this change in presentation. The accompanying notes are an integral part of these financial statements. 37 Pioneer America Income Trust - -------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------- Six Months Ended Year 12/11/04 (a) 6/30/06 Ended to (unaudited) 12/31/05 12/31/04 Investor Class Net asset value, beginning of period $ 9.54 $ 9.79 $ 9.82 ------- ------- ------- Increase (decrease) from investment operations: Net investment income $ 0.17 $ 0.35 $ 0.02 Net realized and unrealized loss on investments (0.31) (0.13) (0.02) ------- ------- ------- Net increase (decrease) from investment operations $ (0.14) $ 0.22 $ - Distributions to shareowners: Net investment income (0.22) (0.47) (0.03) ------- ------- ------- Net decrease in net asset value $ (0.36) $ (0.25) $ (0.03) ------- ------- ------- Net asset value, end of period $ 9.18 $ 9.54 $ 9.79 ======= ======= ======= Total return* (1.46)% 2.27% (0.04)% Ratio of net expenses to average net assets+ 0.74%** 0.74% 0.74%** Ratio of net investment income to average net assets+ 3.94%** 3.90% 3.70%** Portfolio turnover rate 14%** 27% 27% Net assets, end of period (in thousands) $32,530 $38,369 $51,475 Ratios with no waiver of management fees by PIM and no reductions for fees paid indirectly: Net expenses 0.77%** 0.83% 0.96%** Net investment income 3.91%** 3.81% 3.49%** Ratios with waiver of management fees by PIM and reductions for fees paid indirectly: Net expenses 0.74%** 0.74% 0.74%** Net investment income 3.94%** 3.90% 3.70%** (a) Investor Class shares commenced operations on December 11, 2004. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of distributions, and the complete redemption of the investment at net asset value at each end of each period. ** Annualized. + Ratio with no reduction for fees paid indirectly. 38 The accompanying notes are an integral part of these financial statements. Pioneer America Income Trust - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Six Months Ended Year Year 4/1/03 (a) 6/30/06 Ended Ended to (unaudited) 12/31/05 12/31/04 12/31/03 CLASS R Net asset value, beginning of period $ 9.62 $ 9.89 $ 10.07 $ 10.31 ------- ------- ------- --------- Increase (decrease) from investment operations: Net investment income $ 0.15 $ 0.30 $ 0.37 $ 0.25 Net realized and unrealized loss on investments (0.32) (0.15) (0.12) (0.17) ------- ------- ------- --------- Net increase (decrease) from investment operations $ (0.17) $ 0.15 $ 0.25 $ 0.08 Distributions to shareowners: Net investment income (0.19) (0.42) (0.43) (0.32) ------- ------- ------- --------- Net decrease in net asset value $ (0.36) $ (0.27) $ (0.18) $ (0.24) ------- ------- ------- --------- Net asset value, end of period $ 9.26 $ 9.62 $ 9.89 $ 10.07 ======= ======= ======= ========= Total return* (1.74)% 1.53% 2.58% 0.83% Ratio of net expenses to average net assets+ 1.39%** 1.61% 1.20% 1.08%** Ratio of net investment income (loss) to average net assets+ 3.30%** 2.92% 3.01% (2.91)%** Portfolio turnover rate 14%** 27% 28% 66% Net assets, end of period (in thousands) $ 807 $ 895 $ 830 $ 329 Ratios with no waiver of management fees by PIM and no reductions for fees paid indirectly: Net expenses 1.39%** 1.61% 1.20% 1.08%** Net investment income (loss) 3.30%** 2.92% 3.01% (2.91)%** Ratios with waiver of management fees by PIM and reductions for fees paid indirectly: Net expenses 1.39%** 1.61% 1.20% 1.08%** Net investment income (loss) 3.30%** 2.92% 3.01% (2.91)%** (a) Class R shares were first publicly offered on April 1, 2003 * Assumes initial investment at net asset value at the beginning of each period, reinvestment of distributions, and the complete redemption of the investment at net asset value at each end of each period. ** Annualized. + Ratio with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 39 Pioneer America Income Trust - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) - -------------------------------------------------------------------------------- 1. Organization and Significant Accounting Policies Pioneer America Income Trust (the Trust) is a Massachusetts statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The investment objective of the Trust is to provide a high level of current income consistent with preservation of capital and prudent investment risk. The Trustees have authorized the issuance of five classes of shares of the Fund. The Fund offers five classes of shares designated as - Class A, Class B, Class C, Investor Class and Class R shares. Class R shares were first publicly offered on April 1, 2003. Investor Class shares were first issued on December 10, 2004. The Fund is not offering additional Investor Class shares except in connection with the reinvestment of dividends on the Fund's outstanding Investor Class Shares. Each class of shares represents an interest in the same portfolio of investments of the Trust and has equal rights to voting, redemptions, dividends and liquidation, except that each class of shares can bear different transfer agent and distribution fees and has exclusive voting rights with respect to the distribution plans that have been adopted by Class A, Class B, Class C and Class R shareowners, respectively. There is no distribution plan for Investor Class shares. The Trust's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Trust to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gains and losses on investments during the reporting year. Actual results could differ from those estimates. Information regarding the Trust's principal investment risks is contained in the Trust's prospectus. Please refer to those documents when considering the Trust's risks. The following is a summary of significant accounting policies followed by the Trust in the preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: 40 Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Trust is computed once daily on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. In computing the net asset value, securities are valued at prices supplied by independent pricing services, which consider such factors as Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Securities for which market quotations are not readily available are valued at their fair values as determined by, or under the direction of the Board of Trustees. Securities for which there are no other readily available valuation methods are valued at their fair values as determined by, or under the direction of the Board of Trustees. As of June 30, 2006, there were no securities fair valued. Principal amounts of mortgage-backed securities are adjusted for monthly paydowns. Premiums and discounts related to certain mortgage-backed securities are amortized or accreted in proportion to the underlying monthly pay downs. All discounts/premiums on debt securities are accreted/amortized into interest income on a yield to maturity basis for financial reporting purposes. Interest income is recorded on the accrual basis. Temporary cash investments are valued at amortized cost. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. Information regarding the Fund's principal investment risks is contained in the Fund's prospectus'(es). Please refer to those documents when considering the Fund's risks. B. Federal Income Taxes It is the Trust's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Trust's distributions may be shown in the accompanying financial state- 41 Pioneer America Income Trust - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- ments as either from net investment income or net realized gain on investment transactions, or from paid-in-capital, depending on the type of book/tax differences that may exist. At December 31, 2005, the Trust had a net capital loss carryforward of $12,125,464, of which $742,335 will expire in 2006, $2,705,283 will expire in 2007, $1,526,846 will expire in 2008, $2,070,786 will expire in 2011, $3,175,915 will expire in 2012, and $1,904,299 will expire in 2013, if not utilized. The Trust has elected to defer approximately $1,612,711 of capital losses recognized between November 1, 2005 and December 31, 2005 to its fiscal year ending December 31, 2006. The tax character of current year distributions paid will be determined at the end of the current fiscal year. The tax character of distributions paid during the year ended December 31, 2005 was as follows: - -------------------------------------------------------------------------------- 2005 ---------- Distributions paid from: Ordinary income $9,796,927 ---------- Total $9,796,927 ========== - -------------------------------------------------------------------------------- The following shows the components of the Trust's capital on a federal income tax basis at December 31, 2005. - -------------------------------------------------------------------------------- 2005 ------------- Undistributed ordinary income $ 57,355 Capital loss carryforward (12,125,464) Post October losses deferred (1,612,711) Unrealized depreciation (2,712,467) ------------ Total $(16,393,287) ============ - -------------------------------------------------------------------------------- The difference between book basis and tax-basis unrealized appreciation is primarily attributable to the tax deferral of losses on wash sales and the tax treatment of premium and amortization. At December 31, 2005, the Trust reclassified $2,360,505 to decrease distributions in excess of net investment income, and 42 Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- $2,360,505 to increase accumulated net realized loss. This reclassification has no impact on the net assets of the Trust and presents the Trust's capital accounts on a tax basis. C. Fund Shares The Trust records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Trust and a wholly owned indirect subsidiary of UniCredito Italiano S.p.A. (UniCredito Italiano), earned $ 6,504 in underwriting commissions on the sale of Class A shares for the six months ended June 30, 2006. D. Class Allocations Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B, Class C and Class R shares of the Trust, respectively (See Notes 4). Investor Class Shares are not subject to a distribution plan. Shareowners of each class share all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Income, common expenses and realized and unrealized gains and losses are calculated at the Trust level and allocated daily to each class of shares based on the respective percentage of adjusted net assets at the beginning of the day. The Trust declares as daily dividends substantially all of its net investment income. All dividends are paid on a monthly basis. Short-term capital gain distributions, if any, may be declared with the daily dividends. Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Trust with respect to each class of shares are calculated in the same manner, at the same time, and in the same amount, except that Class A, Class B, Class C, Investor Class and Class R shares can bear different transfer agent and distribution fees. E. Repurchase Agreements With respect to repurchase agreements entered into by the Trust, the value of the underlying securities (collateral), including accrued interest received from counter parties, is required to be at least 43 Pioneer America Income Trust - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- equal to or in excess of the value of the repurchase agreement at the time of purchase. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Trust's custodian, or sub custodians. The Trust's investment adviser, Pioneer Investment Management, Inc. (PIM), is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredito Italiano, manages the Trust's portfolio. Management fees are calculated daily at the annual rate of 0.50% of the Trust's average daily net assets. Through December 10, 2006, PIM has agreed not to impose all or a portion of its management fee and to assume other operating expenses (excluding taxes, commissions, interest and extraordinary expenses) of the Fund to the extent necessary to limit Investor Class expenses to 0.74% of the average daily net assets attributable to Investor Class shares. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Trust. At June 30, 2006, $4,330, was payable to PIM related to management fees, administrative costs and certain other services, and is included in due to affiliates. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredito Italiano, provides substantially all transfer agent and shareowner services to the Trust at negotiated rates. Included in due to affiliates is $86,611 in transfer agent fees payable to PIMSS June 30, 2006. 4. Distribution and Service Plans The Trust adopted Plans of Distribution with respect to each class of shares (Class A Plan, Class B Plan, Class C Plan, and Class R Plan) in accordance with Rule 12b-1 of the Investment Company Act of 1940. Pursuant to the Class A Plan, the Trust pays PFD a service fee of up to 0.25% of the Trust's average daily net assets attributable to Class A shares in reimbursement of such expenditures to finance activities primarily intended to result in the sale of Class A shares. 44 Pioneer America Income Trust - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Pursuant to the Class B Plan and the Class C Plan, the Trust pays PFD 1.00% of the average daily net assets attributable to each class of shares. The fee consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class B and Class C shares. Pursuant to the Class R Plan, the Trust pays PFD 0.50% of the average daily net assets attributable to Class R shares as compensation for distribution services. Included in due to affiliates is $1,879 in distribution fees payable to PFD at June 30, 2006. The Trust also has adopted a separate service plan for Class R shares (Service Plan). The Service Plan authorizes the Trust to pay securities dealers, plan administrators or other services organizations that agree to provide certain services to retirement plans or plan participants holding shares of the Trust a service fee of up to 0.25% of the Trust's daily net assets attributable to Class R shares held by such plans. In addition, redemptions of (Class A, Class B, and Class C Shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 18 months of purchase. Class B shares subscribed on or after December 1, 2004 that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time those shares were purchased. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00%. Proceeds from the CDSCs are paid to PFD. For the six months ended June 30, 2006, CDSCs in the amount of $73,852 were paid to PFD. 5. Expense Offset Arrangements The Trust has entered into certain expense offset arrangements with PIMSS, resulting in a reduction in the Trust's total expenses due to interest earned on cash held by PIMSS. For the six months ended June 30, 2006, the Trust's expenses were reduced by $5,010 under such arrangements. 45 Pioneer America Income Trust - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- 6. Merger Information On December 8, 2004, beneficial owners of Safeco Intermediate Term U.S. Government Fund (one of the Series that comprised Safeco Managed Bond Trust) approved a proposed Agreement and Plan of Reorganization that provided for the merger below. This tax-free reorganization was accomplished on December 10, 2004, by exchanging all of Safeco's net assets for Investor Class shares, based on the Fund's Class A shares' ending net asset value. The following charts show the details of the reorganizations as of that closing date ("Closing Date"): - ------------------------------------------------------------------------------------------------- Pioneer Safeco Pioneer America Intermediate Term America Income Trust U.S. Government Fund Income Trust (Pre-Reorganization) (Pre-Reorganization) (Post-Reorganization) - ------------------------------------------------------------------------------------------------- Net Assets $193,756,225 $53,131,201 $246,867,456 Shares Outstanding 19,757,153 5,599,642 25,167,692 Investor Class Shares Issued 5,410,509 - ------------------------------------------------------------------------------------------------- - ------------------------------------------------------------------------------------------------- Unrealized Accumulated Appreciation Loss on on Closing Date Closing Date - ------------------------------------------------------------------------------------------------- Safeco Intermediate Term U.S. Government Fund $33,133 $(1,399,442) - ------------------------------------------------------------------------------------------------- 46 Pioneer America Income Trust - -------------------------------------------------------------------------------- TRUSTEES, OFFICERS AND SERVICE PROVIDERS - -------------------------------------------------------------------------------- Trustees John F. Cogan, Jr., Chairman David R. Bock Mary K. Bush Margaret B.W. Graham Osbert M. Hood Thomas J. Perna Marguerite A. Piret Stephen K. West John Winthrop Officers John F. Cogan, Jr., President Osbert M. Hood, Executive Vice President Vincent Nave, Treasurer Dorothy E. Bourassa, Secretary Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Wilmer Cutler Pickering Hale and Dorr LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Trust are available without charge, upon request, by calling our toll-free number (1-800-225-6292). Information regarding how the Trust voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. 47 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 48 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 49 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 50 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 51 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 52 - -------------------------------------------------------------------------------- HOW TO CONTACT PIONEER We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 Write to us: PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: www.pioneerinvestments.com Before investing consider the Trust's investment objectives, risks, charges and expenses. Contact your advisor or Pioneer Investments for a prospectus containing this information. Read it carefully. The Trust files a complete statement of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. ITEM 2. CODE OF ETHICS. (a) Disclose whether, as of the end of the period covered by the report, the registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party. If the registrant has not adopted such a code of ethics, explain why it has not done so. The registrant has adopted, as of the end of the period covered by this report, a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer and controller. (b) For purposes of this Item, the term "code of ethics" means written standards that are reasonably designed to deter wrongdoing and to promote: (1) Honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships; (2) Full, fair, accurate, timely, and understandable disclosure in reports and documents that a registrant files with, or submits to, the Commission and in other public communications made by the registrant; (3) Compliance with applicable governmental laws, rules, and regulations; (4) The prompt internal reporting of violations of the code to an appropriate person or persons identified in the code; and (5) Accountability for adherence to the code. (c) The registrant must briefly describe the nature of any amendment, during the period covered by the report, to a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item. The registrant must file a copy of any such amendment as an exhibit pursuant to Item 10(a), unless the registrant has elected to satisfy paragraph (f) of this Item by posting its code of ethics on its website pursuant to paragraph (f)(2) of this Item, or by undertaking to provide its code of ethics to any person without charge, upon request, pursuant to paragraph (f)(3) of this Item. The registrant has made no amendments to the code of ethics during the period covered by this report. (d) If the registrant has, during the period covered by the report, granted a waiver, including an implicit waiver, from a provision of the code of ethics to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, that relates to one or more of the items set forth in paragraph (b) of this Item, the registrant must briefly describe the nature of the waiver, the name of the person to whom the waiver was granted, and the date of the waiver. Not applicable. (e) If the registrant intends to satisfy the disclosure requirement under paragraph (c) or (d) of this Item regarding an amendment to, or a waiver from, a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item by posting such information on its Internet website, disclose the registrant's Internet address and such intention. Not applicable. (f) The registrant must: (1) File with the Commission, pursuant to Item 10(a), a copy of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, as an exhibit to its annual report on this Form N-CSR; (2) Post the text of such code of ethics on its Internet website and disclose, in its most recent report on this Form N-CSR, its Internet address and the fact that it has posted such code of ethics on its Internet website; or (3) Undertake in its most recent report on this Form N-CSR to provide to any person without charge, upon request, a copy of such code of ethics and explain the manner in which such request may be made. 	See Item 10(2) ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. (a) (1) Disclose that the registrant's board of trustees has determined that the registrant either: (i) Has at least one audit committee financial expert serving on its audit committee; or (ii) Does not have an audit committee financial expert serving on its audit committee. The registrant's Board of Trustees has determined that the registrant has at least one audit committee financial expert. (2) If the registrant provides the disclosure required by paragraph (a)(1)(i) of this Item, it must disclose the name of the audit committee financial expert and whether that person is "independent." In order to be considered "independent" for purposes of this Item, a member of an audit committee may not, other than in his or her capacity as a member of the audit committee, the board of trustees, or any other board committee: (i) Accept directly or indirectly any consulting, advisory, or other compensatory fee from the issuer; or (ii) Be an "interested person" of the investment company as defined in Section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19)). Ms. Marguerite A. Piret, an independent trustee, is such an audit committee financial expert. (3) If the registrant provides the disclosure required by paragraph (a)(1) (ii) of this Item, it must explain why it does not have an audit committee financial expert. Not applicable. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. (a) Disclose, under the caption AUDIT FEES, the aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years. N/A (b) Disclose, under the caption AUDIT-RELATED FEES, the aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under paragraph (a) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A (c) Disclose, under the caption TAX FEES, the aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A (d) Disclose, under the caption ALL OTHER FEES, the aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A (e) (1) Disclose the audit committee's pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X. PIONEER FUNDS APPROVAL OF AUDIT, AUDIT-RELATED, TAX AND OTHER SERVICES PROVIDED BY THE INDEPENDENT AUDITOR SECTION I - POLICY PURPOSE AND APPLICABILITY The Pioneer Funds recognize the importance of maintaining the independence of their outside auditors. Maintaining independence is a shared responsibility involving Pioneer Investment Management, Inc ("PIM"), the audit committee and the independent auditors. The Funds recognize that a Fund's independent auditors: 1) possess knowledge of the Funds, 2) are able to incorporate certain services into the scope of the audit, thereby avoiding redundant work, cost and disruption of Fund personnel and processes, and 3) have expertise that has value to the Funds. As a result, there are situations where it is desirable to use the Fund's independent auditors for services in addition to the annual audit and where the potential for conflicts of interests are minimal. Consequently, this policy, which is intended to comply with Rule 210.2-01(C)(7), sets forth guidelines and procedures to be followed by the Funds when retaining the independent audit firm to perform audit, audit-related tax and other services under those circumstances, while also maintaining independence. Approval of a service in accordance with this policy for a Fund shall also constitute approval for any other Fund whose pre-approval is required pursuant to Rule 210.2-01(c)(7)(ii). In addition to the procedures set forth in this policy, any non-audit services that may be provided consistently with Rule 210.2-01 may be approved by the Audit Committee itself and any pre-approval that may be waived in accordance with Rule 210.2-01(c)(7)(i)(C) is hereby waived. Selection of a Fund's independent auditors and their compensation shall be determined by the Audit Committee and shall not be subject to this policy. SECTION II - POLICY - ---------------- -------------------------------- ------------------------------------------------- SERVICE SERVICE CATEGORY DESCRIPTION SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES CATEGORY - ---------------- -------------------------------- ------------------------------------------------- I. AUDIT Services that are directly o Accounting research assistance SERVICES related to performing the o SEC consultation, registration independent audit of the Funds statements, and reporting o Tax accrual related matters o Implementation of new accounting standards o Compliance letters (e.g. rating agency letters) o Regulatory reviews and assistance regarding financial matters o Semi-annual reviews (if requested) o Comfort letters for closed end offerings - ---------------- -------------------------------- ------------------------------------------------- II. Services which are not o AICPA attest and agreed-upon procedures AUDIT-RELATED prohibited under Rule o Technology control assessments SERVICES 210.2-01(C)(4) (the "Rule") o Financial reporting control assessments and are related extensions of o Enterprise security architecture the audit services support the assessment audit, or use the knowledge/expertise gained from the audit procedures as a foundation to complete the project. In most cases, if the Audit-Related Services are not performed by the Audit firm, the scope of the Audit Services would likely increase. The Services are typically well-defined and governed by accounting professional standards (AICPA, SEC, etc.) - ---------------- -------------------------------- ------------------------------------------------- ------------------------------------- ------------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the audit period for all services and related fees pre-approved specific service reported at each regularly subcategories. Approval of the scheduled Audit Committee independent auditors as meeting. auditors for a Fund shall constitute pre approval for these services. ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the fund fiscal year within services and related fees a specified dollar limit (including comparison to for all pre-approved specified dollar limits) specific service subcategories reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limit for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for Audit-Related Services not denoted as "pre-approved", or to add a specific service subcategory as "pre-approved" ------------------------------------- ------------------------------------ SECTION III - POLICY DETAIL, CONTINUED - ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION - ----------------------- --------------------------- ----------------------------------------------- III. TAX SERVICES Services which are not o Tax planning and support prohibited by the Rule, o Tax controversy assistance if an officer of the Fund o Tax compliance, tax returns, excise determines that using the tax returns and support Fund's auditor to provide o Tax opinions these services creates significant synergy in the form of efficiency, minimized disruption, or the ability to maintain a desired level of confidentiality. - ----------------------- --------------------------- ----------------------------------------------- - ------------------------------------- ------------------------- AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY - ------------------------------------- ------------------------- - ------------------------------------- ------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year all such services and within a specified dollar limit related fees 				 (including comparison 			 to specified dollar 			 limits) reported 			 quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for tax services not denoted as pre-approved, or to add a specific service subcategory as "pre-approved" - ------------------------------------- ------------------------- SECTION III - POLICY DETAIL, CONTINUED - ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION - ----------------------- --------------------------- ----------------------------------------------- IV. OTHER SERVICES Services which are not o Business Risk Management support prohibited by the Rule, o Other control and regulatory A. SYNERGISTIC, if an officer of the Fund compliance projects UNIQUE QUALIFICATIONS determines that using the Fund's auditor to provide these services creates significant synergy in the form of efficiency, minimized disruption, the ability to maintain a desired level of confidentiality, or where the Fund's auditors posses unique or superior qualifications to provide these services, resulting in superior value and results for the Fund. - ----------------------- --------------------------- ----------------------------------------------- - --------------------------------------- ------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY - ------------------------------------- -------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year within all such services and a specified dollar limit related fees 			 (including comparison 			 to specified dollar 				 limits) reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for "Synergistic" or "Unique Qualifications" Other Services not denoted as pre-approved to the left, or to add a specific service subcategory as "pre-approved" - ------------------------------------- -------------------------- SECTION III - POLICY DETAIL, CONTINUED - ----------------------- ------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PROHIBITED SERVICE SUBCATEGORIES DESCRIPTION - ----------------------- ------------------------- ----------------------------------------------- PROHIBITED SERVICES Services which result 1. Bookkeeping or other services in the auditors losing related to the accounting records or independence status financial statements of the audit under the Rule. client* 2. Financial information systems design and implementation* 3. Appraisal or valuation services, fairness* opinions, or contribution-in-kind reports 4. Actuarial services (i.e., setting actuarial reserves versus actuarial audit work)* 5. Internal audit outsourcing services* 6. Management functions or human resources 7. Broker or dealer, investment advisor, or investment banking services 8. Legal services and expert services unrelated to the audit 9. Any other service that the Public Company Accounting Oversight Board determines, by regulation, is impermissible - ----------------------- ------------------------- ----------------------------------------------- - ------------------------------------------- ------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY - ------------------------------------------- ------------------------------ o These services are not to be o A summary of all performed with the exception of the(*) services and related services that may be permitted fees reported at each if they would not be subject to audit regularly scheduled procedures at the audit client (as Audit Committee meeting defined in rule 2-01(f)(4)) level will serve as continual the firm providing the service. confirmation that has 				 not provided any restricted services. - ------------------------------------------- ------------------------------ - -------------------------------------------------------------------------------- GENERAL AUDIT COMMITTEE APPROVAL POLICY: o For all projects, the officers of the Funds and the Fund's auditors will each make an assessment to determine that any proposed projects will not impair independence. o Potential services will be classified into the four non-restricted service categories and the "Approval of Audit, Audit-Related, Tax and Other Services" Policy above will be applied. Any services outside the specific pre-approved service subcategories set forth above must be specifically approved by the Audit Committee. o At least quarterly, the Audit Committee shall review a report summarizing the services by service category, including fees, provided by the Audit firm as set forth in the above policy. - -------------------------------------------------------------------------------- (2) Disclose the percentage of services described in each of paragraphs (b) through (d) of this Item that were approved by the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X. N/A (f) If greater than 50 percent, disclose the percentage of hours expended on the principal accountant's engagement to audit the registrant's financial statements for the most recent fiscal year that were attributed to work performed by persons other than the principal accountant's full-time, permanent employees. N/A (g) Disclose the aggregate non-audit fees billed by the registrant's accountant for services rendered to the registrant, and rendered to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant. N/A (h) Disclose whether the registrant's audit committee of the board of trustees has considered whether the provision of non-audit services that were rendered to the registrant's investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. The Fund's independent auditor, Ernst & Young LLP ("E&Y"), has advised the Audit Committee of the Fund's Board of Trustees that E&Ys Spanish affiliate (E&Y Spain) performed certain non-audit work for Pioneer Global Investments Limited ("PGIL"), an affiliate of the Funds investment adviser. The services involved the receipt and disbursement of monies transferred to E&Y Spain by PGIL in payment of individual payroll and related income tax withholdings due on returns prepared by E&Y Spain for certain PGIL employees located in Spain from February 2001 to October 2005. E&Y became auditors of the Fund in May 2002. These payroll and tax services were discontinued in November 2005. The annual fee received by E&Y Spain for all such services totaled approximately 9,000 Euro per year. E&Y has informed the Audit Committee that based on its internal reviews and the de minimus nature of the services provided and fees received, E&Y does not believe its independence with respect to the Fund has been impaired or that it is disqualified from acting as independent auditors to the Fund. N/A Item 5. Audit Committee of Listed Registrants (a) If the registrant is a listed issuer as defined in Rule 10A-3 under the Exchange Act (17 CFR 240.10A-3), state whether or not the registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)). If the registrant has such a committee, however designated, identify each committee member. If the entire board of directors is acting as the registrants audit committee as specified in Section 3(a)(58)(B) of the Exchange Act (15 U.S.C. 78c(a)(58)(B)), so state. N/A (b) If applicable, provide the disclosure required by Rule 10A-3(d) under the Exchange Act (17 CFR 240.10A-3(d)) regarding an exemption from the listing standards for audit committees. N/A Item 6. Schedule of Investments. File Schedule I Investments in securities of unaffiliated issuers as of the close of the reporting period as set forth in 210.12- 12 of Regulation S-X [17 CFR 210.12-12], unless the schedule is included as part of the report to shareholders filed under Item 1 of this Form. Included in Item 1 ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. A closed-end management investment company that is filing an annual report on this Form N-CSR must, unless it invests exclusively in non-voting securities, describe the policies and procedures that it uses to determine how to vote proxies relating to portfolio securities, including the procedures that the company uses when a vote presents a conflict between the interests of its shareholders, on the one hand, and those of the company's investment adviser; principal underwriter; or any affiliated person (as defined in Section 2(a)(3) of the Investment Company Act of 1940 (15 U.S.C. 80a-2(a)(3)) and the rules thereunder) of the company, its investment adviser, or its principal underwriter, on the other. Include any policies and procedures of the company's investment adviser, or any other third party, that the company uses, or that are used on the company's behalf, to determine how to vote proxies relating to portfolio securities. Not applicable to open-end management investment companies. Item 8. Portfolio Managers of Closed-End Management Investment Companies. (a) If the registrant is a closed-end management investment company that is filing an annual report on this Form N-CSR,provide the following information: (1) State the name, title, and length of service of the person or persons employed by or associated with the registrant or an investment adviser of the registrant who are primarily responsible for the day-to-day management of the registrants portfolio (Portfolio Manager). Also state each Portfolio Managers business experience during the past 5 years. Not applicable to open-end management investment companies. Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers. (a) If the registrant is a closed-end management investment company, in the following tabular format, provide the information specified in paragraph (b) of this Item with respect to any purchase made by or on behalf of the registrant or any affiliated purchaser, as defined in Rule 10b-18(a)(3) under the Exchange Act (17 CFR 240.10b-18(a)(3)), of shares or other units of any class of the registrants equity securities that is registered by the registrant pursuant to Section 12 of the Exchange Act (15 U.S.C. 781). Instruction to paragraph (a). Disclose all purchases covered by this Item, including purchases that do not satisfy the conditions of the safe harbor of Rule 10b-18 under the Exchange Act (17 CFR 240.10b-18), made in the period covered by the report. Provide disclosures covering repurchases made on a monthly basis. For example, if the reporting period began on January 16 and ended on July 15, the chart would show repurchases for the months from January 16 through February 15, February 16 through March 15, March 16 through April 15, April 16 through May 15, May 16 through June 15, and June 16 through July 15. Not applicable to open-end management investment companies. Item 10. Submission of Matters to a Vote of Security Holders. Describe any material changes to the procedures by which shareholders may recommend nominees to the registrants board of directors, where those changes were implemented after the registrant last provided disclosure in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14A (17 CFR 240.14a-101), or this Item. There have been no material changes to the procedures by which the shareholders may recommend nominees to the registrants board of directors since the registrant last provided disclosure in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14(A) in its definitive proxy statement, or this Item. ITEM 11. CONTROLS AND PROCEDURES. (a) Disclose the conclusions of the registrant's principal executive officer or officers and principal financial officer or officers, or persons performing similar functions, about the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-2(c) under the Act (17 CFR 270.30a-2(c))) based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph. The registrant's principal executive officer and principal financial officer have concluded, that the registrant's disclosure controls and procedures are effective based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this report. (b) Disclose whether or not there were significant changes in the registrant's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. There were no significant changes in the registrant's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. ITEM 12. EXHIBITS. File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated. (a) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit. (b) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2 under the Act (17 CFR 270.30a-2). Filed herewith. SIGNATURES [See General Instruction F] Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) Pioneer American Income trust By (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr, President Date August 31, 2006 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr., President Date August 31, 2006 By (Signature and Title)* /s/ Vincent Nave Vincent Nave, Treasurer Date August 31, 2006 * Print the name and title of each signing officer under his or her signature.