EXHIBIT 12.1 KEVCO, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES NINE MONTHS ENDED YEAR ENDED DECEMBER 31, SEPTEMBER 30, ----------------------------------- ----------------- 1996 1995 1994 1993 1992 1997 1996 ------- ------ ------ ------ ------ -------- -------- (IN THOUSANDS, EXCEPT RATIO AMOUNTS) (UNAUDITED) Earnings: Income before income taxes................. $14,407 $7,262 $5,567 $2,755 $2,048 $ 10,140 $ 10,877 Fixed charges: Interest expense and amortization of debt discount on all indebtedness.......... 2,209 1,692 627 425 334 2,530 1,626 Portion of rent under long-term operating leases representative of an interest factor................ 1,280 880 525 490 439 1,272 1,187 ------- ------ ------ ------ ------ -------- -------- Total fixed charges...... 3,489 2,572 1,152 915 773 3,802 2,813 Income before income taxes and fixed charges................. 17,896 9,834 6,719 3,670 2,821 13,942 13,690 ------- ------ ------ ------ ------ -------- -------- Ratio of earnings to fixed charges........... 5.1 3.8 5.8 4.0 3.6 3.7 4.9 ======= ====== ====== ====== ====== ======== ======== 1