EXHIBIT 12 PEOPLES BANCORP INC. ANNUAL REPORT ON FORM 10-K FOR FISCAL YEAR ENDED DECEMBER 31, 2001 COMPUTATION OF RATIOS CASH DIVIDENDS PER SHARE Cash dividends paid/Common shares outstanding at date of declaration BOOK VALUE PER SHARE Total stockholders' equity/Common shares outstanding at year-end RETURN ON AVERAGE ASSETS Net income/Average assets RETURN ON AVERAGE STOCKHOLDERS' EQUITY Net income/Average stockholders' equity TANGIBLE RETURN ON AVERAGE ASSETS (Net income less after-tax amortization of goodwill and core deposit intangibles)/(Average assets less average goodwill and core deposit intangibles) TANGIBLE RETURN ON AVERAGE STOCKHOLDERS' EQUITY (Net income less after-tax amortization of goodwill and core deposit intangibles)/(Average stockholders' equity less average goodwill and core deposit intangibles) CASH EARNINGS PER SHARE (Net income less after-tax amortization of goodwill and core deposit intangibles)/(Weighted average common shares outstanding) NET INTEREST MARGIN Fully tax equivalent net interest income/Average earning assets NON-INTEREST EXPENSE TO AVERAGE ASSETS Non-interest expense/Average assets EFFICIENCY RATIO (Non-interest expenses less intangible and non-recurring, non-operational items)/(Fully tax equivalent net interest income plus non-interest income) AVERAGE LOANS TO AVERAGE DEPOSITS Average gross loans/Average deposits DIVIDEND PAYOUT RATIO Dividends declared/Net income AVERAGE STOCKHOLDERS' EQUITY TO AVERAGE ASSETS Average stockholders' equity/Average assets PRIMARY CAPITAL TO PERIOD END TOTAL ASSETS (Stockholders' equity plus allowance for loan losses less intangible /(Period end total assets plus allowance for loan losses less intangible assets) TIER 1 CAPITAL RATIO Stockholders' equity less intangible assets less securities mark-to-market capital reserve ("Tier 1 Capital")/Risk adjusted assets TOTAL CAPITAL RATIO Tier 1 Capital plus allowance for loan losses/Risk adjusted assets TIER 1 LEVERAGE RATIO Tier 1 Capital/Quarterly average assets NET CHARGE-OFFS TO AVERAGE LOANS (Gross chargeoffs less recoveries)/Average net loans NONPERFORMING LOANS AS A PERCENTAGE OF PERIOD END LOANS (Nonaccrual loans plus loans past 90 days or greater plus renegotiated loans)/Gross Loans net of unearned interest NONPERFORMING ASSETS AS A PERCENTAGE OF TOTAL ASSETS (Nonaccrual loans plus loans past due 90 days or greater plus renegotiated loans plus other real estate owned)/Total assets ALLOWANCE FOR LOAN LOSSES TO PERIOD END TOTAL LOANS Allowance for loan losses/Gross loans net of unearned interest