Exhibit 12 TELEPHONE AND DATA SYSTEMS, INC. RATIOS OF EARNINGS TO FIXED CHARGES For the Nine Months ended September 30, 1999 (Dollars In Thousands) EARNINGS: Income from Continuing Operations before income taxes $ 513,150 Add (Deduct): Minority Share of Losses (31) Earnings on Equity Method (18,878) Distributions from Minority Subsidiaries 19,225 Amortization of Capitalized Interest 2 Minority interest in majority-owned subsidiaries that have fixed charges 54,121 --------- 567,589 Add fixed charges: Consolidated interest expense 95,017 Interest Portion (1/3) of Consolidated Rent Expense 9,833 --------- $ 672,439 ========= FIXED CHARGES: Consolidated interest expense $ 95,017 Interest Portion (1/3) of Consolidated Rent Expense 9,833 --------- $ 104,850 ========= RATIO OF EARNINGS TO FIXED CHARGES 6.41 ========= Tax-Effected Redeemable Preferred Dividends $ 85 Fixed Charges 104,850 --------- Fixed Charges and Redeemable Preferred Dividends $ 104,935 ========= RATIO OF EARNINGS TO FIXED CHARGES AND REDEEMABLE PREFERRED DIVIDENDS 6.41 ========= Tax-Effected Preferred Dividends $ 1,614 Fixed Charges 104,850 --------- Fixed Charges and Preferred Dividends $ 106,464 ========= RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED DIVIDENDS 6.32 =========