Form 1040 Line 16 discrepancy, and I have NO capital gains, NO dividends, NO interest to convolute the calculation

Line 16 is discrepant by $9k.  I have NO capital gains or dividends and interest. Income is +$100k so the tax table I need to use appears to be Section B on page 74 of the IRS instructions.  I am not comfortable filing my taxes with this $9k discrepancy until I understand why it is occurring.