I filed my taxes for 2021.i had three W2s on the second W2 one I was in the positive for a refund but when I did the last W2 I was zeroed out and ended up having to pay the IRS.my question is I already paid the $455 I owed the IRS where is the remaining

[AnthonyC CPA]

Since you received three W2's in 2021 the amount of income that you get taxed on is the sum of all three jobs.  When you add up the total taxable income from all three jobs you may have moved to a higher income tax bracket.  Also, if the third W2 that you entered did not have federal taxes withheld this would increase the amount that you owe to the IRS.  You can check this by adding up your total taxable income and federal taxes withheld from all three W2's and see if the amount withheld is less than your total tax liability.

Hope this helps!  Please let me know if you have additional questions on this topic.