1) Please use your inside voice.

2) Do the "math" on the paystub to determine if it is a PRETAX or after tax deduction.

3) The Blockheads have been know to make mistakes.   

4) Client *said* isn't a defensible position on a tax return that you sign.  You might have to actually talk to the employer.  I've had some very intelligent clients that were clueless on the before/after tax deduction issue.

5) If # 3 is correct, amend the prior year returns.