We paid out taxes due a couple of days late this year because the money that we needed to pay tax with had not transferred to our checking account in time from the brokerage. We were ready to pay the fine and interest. However, the IRS has now sent us a bill with the full amount even though they should have sent us the invoice only for the fine and interest. What do we do?
How did you pay it? Did you mail a check? It might have crossed in the mail. Or you might have sent the check in with the wrong voucher slip. It should be a single 1040V voucher. If you send in a 1040ES slip that is for an Estimated Payment for NEXT year and didn't get applied to 2021 balance due. Check your IRS account to see if they got it. You need to send a copy of the check or bank statement showing the payment was paid.
Not unusual ... big machine with slow moving cogs. Simply respond to the IRS bill with proof of payment only ... do not make a payment at this time. Then wait for the IRS to rethink this bill for late payment. If there is a number on the notice then you can try calling it to speed up the process but don't count on getting thru.