Also, since the payment had not been credited to our account by 4/15, I paid the taxes due including the amount of that estimated payment (thinking it may have been lost in the mail or something). Not the best decision.
So now we overpaid for 2021 in the amount of that estimated payment. Yes you did indeed.
Will it simply be applied as an estimated payment for 2022, No it will not.
or will I now receive a refund? Possibly ... eventually.
Or do I need to refile and claim a refund? Unknown ... you will have to wait and see what the IRS does first.
Going forward ... use the IRS payment website for Direct Pay for ALL tax payments so you get a receipt on the spot - https://www.irs.gov/payments
