This piece from Bloomberg today shows why the Kerry’s have been so cagey about their financial records:

She [Heinz-Kerry] paid a 12.5 percent average tax rate, lower than her husband’s 25.8 percent average rate and the 13 percent average tax rate paid by Vice President Richard Cheney. President George W. Bush paid 27.7 percent of his income in federal taxes last year. Democratic vice presidential nominee John Edwards paid an overall federal tax rate of 5.2 percent.