1 EXHIBIT 12.1 US XCHANGE, L.L.C STATEMENT RE COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES FISCAL YEAR ENDED DECEMBER 31, 1998 1997 1996 ------------ ----------- --------- SELECTED HISTORICAL DATA Earnings were calculated as follows: Income (loss) before taxes $(50,622,933) $(5,828,368) $(137,810) Add: Fixed charges 17,052,965 93,146 - Deduct: Capitalized interest 2,295,721 2,103 - ------------ ----------- --------- Earnings $(35,865,689) $(5,737,325) $(137,810) ------------ ----------- --------- Fixed charges were calculated as follows: Interest expense 13,486,996 30,452 - Amortization of debt issuance costs 351,722 - - Portion of rentals attributable to interest 918,526 60,591 - Capitalized interest 2,295,721 2,103 - ------------ ----------- --------- Fixed charges $ 17,052,965 $ 93,146 - ------------ ----------- --------- Ratio of earnings to fixed charges 0 0 0 ------------ ----------- --------- Deficiency $ 52,918,654 $ 5,830,471 $ 137,810 ------------ ----------- ---------