The amount in my W-2 Box 4 is 6.2% of the combined amounts of boxes 3 and 7, but TurboTax displays an error message saying the employer over-withheld. Which is correct?

If you have entered all the amounts from Boxes 1,3,5,7, etc. on your W-2 correctly, don't worry about the message.

 

It won't affect your return or prevent you from filing; it's just to let you know to contact your employer that over-withholding should be refunded to you.

 

You could try deleting and re-entering your W-2 to see if the issue resolves.

 

Click this link for more info on Excess Employer Withholding.

 

 

Thanks so much for your reply, MarilynG1.   But what I'm asking is if TurboTax is wrong in saying my employer made a mistake because from how I'm reading IRS rules, the amount withheld is correct.  

 

Walt