EXHIBIT 12 NIPSCO INDUSTRIES, INC. Ratio of Earnings to Fixed Charges Twelve Months Year Ended December 31, Ended --------------------------------------------------------------------- September 30, 1990 1991 1992 1993 1994 1995 ------------- ------------- ------------- ------------- ------------- --------------- Earnings as defined in item 503(d) of Regulation S-K: Income before interest charges.......... $254,220,175 $255,952,543 $248,243,984 $261,422,078 $267,739,129 $280,131,118 Adjustments- Federal income taxes.................... 55,494,310 67,012,826 61,556,504 89,021,967 100,320,953 117,455,537 State income tax........................ 13,422,937 11,277,178 11,700,316 13,132,078 15,398,420 17,518,793 Deferred investment tax credit, net..... 31,688,553 (6,295,166) (7,451,688) (7,446,643) (6,499,242) (7,432,624) Deferred income taxes, net.............. (22,048,481) 6,768,760 14,503,060 2,122,294 (11,488,355) (21,283,941) Federal and state income taxes included in other income.............. 441,102 (3,240,751) (3,323,671) (5,537,170) (16,332,753) (17,577,000) ------------ ------------ ------------ ------------ ------------ ------------ $333,218,596 $331,475,390 $325,228,505 $352,714,604 $349,138,152 $368,811,883 ============ ============ ============ ============ ============ ============ Fixed charges as defined in item 503(d) of Regulation S-K: Interest on long-term debt.............. $108,823,151 $100,380,978 $ 87,660,094 $ 82,121,209 $ 78,292,155 $ 81,272,584 Other Interest.......................... 3,843,101 7,093,814 9,954,982 9,238,106 11,650,228 12,861,209 Amortization of premium, reacquisition premium, discount and expense on debt, net............................. 3,586,135 3,404,385 3,322,908 3,582,624 3,897,151 4,310,115 Interest portion of rent expense........ 2,340,557 2,087,896 1,396,299 2,038,992 2,220,575 2,222,339 ------------ ------------ ------------ ------------ ------------ ------------ $118,592,944 $112,967,073 $102,334,283 $ 96,980,931 $ 96,060,109 $100,666,247 ============ ============ ============ ============ ============ ============ Plus preferred stock dividends: Preferred dividend requirements of subsidiary......................... $ 12,606,794 $ 11,686,276 $ 10,658,424 $ 10,341,006 $ 9,912,759 $ 9,118,271 Preferred dividend requirements factor.... 1.56 1.52 1.52 l.54 1.47 1.49 ------------ ------------ ------------ ------------ ------------ ------------ Preferred dividend requirements of subsidiary........................... 19,666,599 17,763,140 16,200,804 15,925,149 14,571,756 13,586,224 Fixed charges............................. 118,592,944 112,967,073 102,334,283 96,980,931 96,060,109 100,666,247 ------------ ------------ ------------ ------------ ------------ ------------ $138,259,543 $130,730,213 $118,535,087 $112,906,080 $110,631,865 $114,252,471 ============ ============ ============ ============ ============ ============ Ratio of earnings to fixed charges........ 2.41 2.54 2.74 3.12 3.16 3.23