liabilities denominated in a foreign currency are translated into U.S. dollars at the prevailing exchange rates at period end. Purchases and sales of investment securities, income and expenses are translated into U.S. dollars at the prevailing exchange rates on the respective dates of the transactions.
Net realized and unrealized gains and losses on foreign currency transactions represent net gains and losses between trade and settlement dates on securities transactions, the acquisition and disposition of foreign currencies, and the difference between the amount of net investment income accrued and the U.S. dollar amount actually received. The portion of both realized and unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed but is included with net realized and unrealized gain/appreciation and loss/depreciation on investments.
Taxes. The Fund’s policy is to comply with the requirements of the Internal Revenue Code, as amended, which are applicable to regulated investment companies, and to distribute all of its taxable income to its shareholders.
Additionally, the Fund may be subject to taxes imposed by the governments of countries in which it invests and are generally based on income and/or capital gains earned or repatriated. Estimated tax liabilities on certain foreign securities are recorded on an accrual basis and are reflected as components of interest income or net change in unrealized gain/loss on investments. Tax liabilities realized as a result of security sales are reflected as a component of net realized gain/loss on investments.
Income from certain commodity-linked derivatives does not constitute “qualifying income” to the Fund. Receipt of such income could cause the Fund to be subject to tax at the Fund level. The IRS has issued a private letter ruling to the Fund stating that such income earned through its wholly owned Subsidiary constitutes qualifying income. The Fund is required to increase its taxable income by its share of the Subsidiary’s income, including net gains from commodity-linked transactions. Net investment losses of the Subsidiary cannot be deducted by the Fund in the current period nor carried forward to offset taxable income for future periods.
At March 31, 2021, the Fund had net tax basis capital loss carryforwards of approximately $249,857,000, including short-term losses ($66,224,000) and long-term losses ($183,633,000). Such losses include $2,090,000 inherited from its merger with Deutsche Select Alternative Allocation Fund and $194,700,000 inherited from its merger with Deutsche Gold & Precious Metals Fund, which may be applied against any realized net taxable capital gains indefinitely subject to certain limitations under Section 381–384 of the Internal Revenue Code.
At September 30, 2021, the aggregate cost of investments for federal income tax purposes was $3,128,099,225. The net unrealized appreciation