EXHIBIT 12 WASTE MANAGEMENT, INC. Ratio of Earnings to Fixed Charges (Unaudited) (millions of dollars, except ratio) Restated --------------------------- Six Months Ended June 30 --------------------------- 1996 1997 --------- --------- Income from continuing operations before income taxes, undistributed earnings from affiliated companies and minority interest $ 528.0 $ 519.0 Interest expense 236.2 239.7 Capitalized interest (15.8) (13.5) One-third of rents payable in the next year 26.9 24.4 --------- --------- Income from continuing operations before income taxes, undistributed earnings from affiliated companies, minority interest, interest and one-third of rents $ 775.3 $ 769.6 ========= ========= Interest expense 236.2 239.7 One third of rents payable in the next year 26.9 24.4 --------- --------- Interest expense plus one-third of rents $ 263.1 $ 264.1 ========= ========= Ratio of earnings to fixed charges 2.95 to 1 2.91 to 1