EXHIBIT 12 UNITED RENTALS, INC. STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES PERIOD FROM AUGUST 14, 1997 (INCEPTION) THROUGH SIX MONTHS ENDED DECEMBER 31, 1997 JUNE 30, 1998 ------------------------ ------------------ Earnings: Income before provision for income taxes................ $ 54,138 $13,913,219 Interest expense...... 454,072 4,936,708 Amortization of debt issuance cost........ 38,332 261,919 Interest portion of rent expense(1)...... 174,917 1,781,833 -------- ---------- Earnings as $721,459 $20,893,679 adjusted........... ======== ========== Fixed charges: Interest expense...... $454,072 $4,936,708 Amortization of debt issuance cost........ 38,332 261,919 Interest portion of rent expense(1)...... 174,917 1,781,833 -------- ---------- Fixed charges....... $667,321 $6,980,460 ======== ========== Ratio of earnings to fixed charges.......... 1.1x 3.0x - -------- (1) The interest portion of rent expense is estimated to be one-third of rent expense.