1 EXHIBIT 12 CABOT CORPORATION AND CONSOLIDATED SUBSIDIARIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollar amounts in thousands) Six Months Ended March 31 Years ended September 30 --------------------------------------------------------- 1994 1993 1992 1991 1990 1989 ---- ---- ---- ---- ---- ---- Earnings: Pre-tax income from continuing operations $61,011 $67,900 $116,599 $62,362 $63,983 $(25,480) Distributed income of affiliated companies 3,168 5,988 5,766 4,688 3,607 1,704 Add fixed charges: Interest on indebtedness 20,564 44,043 41,714 38,661 41,145 34,059 Portion of rents representative of the interest factor 2,576 4,838 4,933 5,715 5,226 4,764 ------- -------- -------- -------- -------- -------- Income as adjusted $87,319 $122,769 $169,012 $111,426 $113,961 $ 15,047 Fixed charges: Interest on indebtedness $20,564 $ 44,043 $ 41,714 $ 38,661 $ 41,145 $ 34,059 Capitalized interest - - 3,963 8,745 - - Portion of rents representative of the interest factor 2,576 4,838 4,933 5,715 5,226 4,764 ------- -------- -------- -------- -------- -------- Total fixed charges $23,140 $ 48,881 $ 50,610 $ 53,121 $ 46,371 $ 38,823 Ratio of earnings to fixed charges 3.77 2.51 3.34 2.10 2.46 * ======= ======== ======== ======== ======== * Earnings in fiscal 1989 were inadequate to cover fixed charges by $23,776. Operating profit for 1989 includes a $71,716 loss associated with the energy group restructuring and aggregate charges of $18,933 related to the reorganization of the Company's carbon black operations, streamlining of the ceramic packaging business, and provisions for environmental issues. Without these charges, the ratio of earnings to fixed charges would be 2.72 for 1989.