It is highly unlikely that the math is wrong. it is more likely that there is some data entered incorrectly. Have you checked all of the amounts you entered and looked for typos, missing decimals and extra zeros? Please provide some details about the math you think is wrong.
If you used a "tax table" and think the calculations are incorrect---understand that there is more than one tax table. If, for example, you have capital gains or qualified dividends, the calculations are done from a different table.