I e-filed my fed and I owed x amount. When I pulled it back up on my computer to pay it, the amount changed to substantially less owed. Which do I pay?

[MCOrnelas]

I believe it had to do with the unemployment amount received.  Should I pay the filed amount due?

[fanfare]

you might pay the smaller amount due.

In that case, you won't get a refund when IRS adjusts your already filed tax return.