Sent my 2021 1040 to IRS May 15 along with a payment and the form to defer the rest owed for 90 days, payment was deposited 30 days later.
Called IRS last week and they confirmed they got my 1040 but haven't processed it yet. They suggested I pay what's owed now but I replied I'll wait until I hear from IRS on my deferment request. He said fine. LOL!
Love it! No sense in giving them money before they ask.