@rt2300
The one I see is details it all, not sure why there is any confusion.
1) Your Tax Liability is total tax calculated for all your income....ignoring credits and pre-payments.
2) Then a section showing all the taxes you have already pre-paid,...i.e. Withholding, Quarterly Estimated tax payments, PLUS any other credits applied as a total credit.
3) then a final line indicating what is left for you to pay now (or refund you will receive if #2 is greater than #1)
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____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*