Your question is odd---you seem to be asking if you pay tax on tax that was withheld. Your gross pay is in box 1 of your W-2. Box 2 of your W-2 shows how much you received after taxes were withheld. Boxes 3 - 6 show the Social Security and Medicare that were withheld from the income you received.
Perhaps it would help if you read what each box on your W-2 means:
https://turbotax.intuit.com/tax-tips/irs-tax-forms/what-is-a-w-2-form/L6VJbqWl5
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
