The tax calculated by Turbotax in box 44 of the 1040 is not correct if Foreign Earned Income Exclusion has been used in the calculation for Taxable Income.

The tax calculated by Turbotax in box 44 of the 1040 is not correct.  If I take the amount in line 43, and use Married File Jointly, I don't get the number reported in box 44.  I have a Foreign Earned Income Exclusion amount.  If I remove that (and remove it from the Income box 7 too so that box 43 is the same number) I get the correct number in box 44.  However I thought this exclusion was only used to calculate the AGI and thereafter the taxable income, but once the latter was established, the tax calculation should be the same.