Exhibit 99(d) Entergy Mississippi, Inc. Computation of Ratios of Earnings to Fixed Charges and Ratios of Earnings to Combined Fixed Charges and Preferred Dividends Twelve Months Ended June 30, 1997 1998 1999 2000 2001 2002 Fixed charges, as defined: Total Interest $45,274 $40,927 $38,840 $44,877 $50,991 $47,944 Interest applicable to rentals 1,947 1,864 2,261 1,596 1,849 2,020 --------------------------------------------------------- Total fixed charges, as defined 47,221 42,791 41,101 46,473 52,840 $49,964 Preferred dividends, as defined (a) 5,123 4,878 4,878 5,347 4,674 4,736 --------------------------------------------------------- Combined fixed charges and preferred dividends, $52,344 $47,669 $45,979 $51,820 $57,514 $54,700 as defined ========================================================= Earnings as defined: Net Income $66,661 $62,638 $41,588 $38,973 $39,620 $37,994 Add: Provision for income taxes: Total income taxes 26,744 28,031 17,537 22,868 20,464 20,311 Fixed charges as above 47,221 42,791 41,101 46,473 52,840 49,964 ---------------------------------------------------------- Total earnings, as defined $140,626 $133,460 $100,226 $108,314 $112,924 $108,269 ========================================================== Ratio of earnings to fixed charges, as defined 2.98 3.12 2.44 2.33 2.14 2.17 ========================================================== Ratio of earnings to combined fixed charges and preferred dividends, as defined 2.69 2.80 2.18 2.09 1.96 1.98 ========================================================== - ------------------------ (a) "Preferred dividends," as defined by SEC regulation S-K, are computed by dividing the preferred dividend requirement by one hundred percent (100%) minus the income tax rate.