1 EXHIBIT 12(b) PAGE 1 of 2 UNION ELECTRIC COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS 12 Months Ended YEAR ENDED DECEMBER 31, March 31, ------------------------------------------------- --------- 1990 1991 1992 1993 1994 1995 ---- ---- ---- ---- ---- ---- (Thousands of Dollars Except Ratios) Net income for the period . . . . . . . $294,219 $321,512 $302,748 $297,160 $320,757 $320,755 Add: Taxes based on income . . . . . . 191,532 218,954 197,009 182,716 203,827 202,214 Fixed charges (see below) . . . . 188,698 168,380 136,227 130,914 142,411 143,910 -------- -------- -------- -------- -------- -------- Earnings available for fixed charges and preferred stock dividend requirements of Company . . $674,449 $708,846 $635,984 $610,790 $666,995 $666,879 ======== ======== ======== ======== ======== ======== Fixed charges: Interest on debt . . . . . . . . $183,215 $163,061 $125,798 $124,430 $135,608 $136,658 Amortization of premium and discount, less expense, on debt; and bond defeasance cost . . . . . . . . . . . . . 4,369 4,148 9,521 5,170 5,504 5,505 Rentals (see note) . . . . . . . 1,114 1,171 908 1,314 1,299 1,747 ---------- ---------- ---------- ---------- ---------- --------- Total fixed charges . . . . . . $188,698 $168,380 $136,227 $130,914 $142,411 $143,910 Preferred stock dividend requirements of Company *(Adjusted for income tax effect) . . . . . . . . . . . . 22,901 22,213 21,852 21,537 20,514 20,457 --------- --------- --------- --------- --------- --------- Total fixed charges and preferred stock dividend requirements . . . . $211,599 $190,593 $158,079 $152,451 $162,925 $164,367 ======== ======== ======== ======== ======== ======== Ratio of earnings to fixed charges and preferred stock dividends . . . 3.19 3.72 4.02 4.01 4.09 4.06 ========== ========== ========== ========== ========== ========== Note: Represents the interest factor applicable to rentals. * See following page for supporting computation. 2 EXHIBIT 12(b) PAGE 2 of 2 UNION ELECTRIC COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS 12 Months YEAR ENDED DECEMBER 31, Ended ---------------------------------------------------- March 31, 1990 1991 1992 1993 1994 1995 ---- ---- ---- ---- ---- ---- (Thousands of Dollars Except Ratios) Computation of preferred stock dividend requirements of Company, adjusted for income tax effect* Preferred stock dividend require- ments of Company, as shown on statement of earnings . . . . . $14,693 $14,059 $14,058 $14,087 $13,252 $13,252 Less deductible preferred stock dividends** . . . . . . . . . . 2,085 2,085 2,085 1,973 1,816 1,816 --------- --------- --------- --------- --------- --------- Non-deductible preferred stock dividends . . . . . . . . . . . . $ 12,608 $ 11,974 $ 11,973 $ 12,114 $ 11,436 $ 11,436 ======== ======== ======== ======== ======== ======== Excess of net income before income taxes over net income (percentage) - See note below . . . . . . . 65.1% 68.1% 65.1% 61.5% 63.5% 63.0% ------ ------ ------ ------ ------ ------ Income tax effect on non-deductible preferred stock dividends* . . . $8,208 $8,154 $7,794 $7,450 $7,262 $7,205 Add: Deductible preferred stock dividends (above) . . . . . . . 2,085 2,085 2,085 1,973 1,816 1,816 Non-deductible preferred stock dividends (above) . . . . . . . 12,608 11,974 11,973 12,114 11,436 11,436 -------- -------- -------- -------- -------- -------- Preferred stock dividend requirements of Company, adjusted for income tax effect . . . . . . . . . . . $ 22,901 $ 22,213 $ 21,852 $ 21,537 $ 20,514 $ 20,457 ======== ======== ======== ======== ======== ======== Note: Calculated as follows - Net income before income taxes . . . . . . . . . . . . $485,751 $540,466 $499,757 $479,876 $524,584 $522,969 Less net income . . . . . . . . 294,219 321,512 302,748 297,160 320,757 320,755 -------- -------- -------- -------- -------- -------- Excess - Taxes based on income . . . . . . . . . . . $191,532 $218,954 $197,009 $182,716 $203,827 $202,214 ======== ======== ======== ======== ======== ======== - Percentage of net income . 65.1% 68.1% 65.1% 61.5% 63.5% 63.0% ======== ======== ======== ======== ======== ======== * Income tax adjustment to reflect pre-tax earnings required to meet preferred stock dividend. ** Dividends deductible on federal income tax return.