The amended tax due may be in ADDITION to the tax due on the original return. So you still might need to pay the original first tax due. Check your 1040X Amended return.
Go by the actual 1040X. Line 18 should be your original refund amount and line 22 should be your additional refund. If you paid on your original return it will be on line 16. If there is an amount owed with the amendment, it will be on line 20.
If you have a tax due, do not send the 1040V. Just include a check with the 1040X. Ignore the 1040V. That is for the original return or what the original return would have been if it didn’t need correcting. Don’t pay the amount on the 1040V. Pay the amount on the actual 1040X.
