Retirement tax questions

Yes, I shouldn't have waited but given my situation it was better to chance it then not do it at all. When I referring to postmarked that meant I went to the post office pay for postage with tracking had a receipt proving I mailed it and had memo the check for 2021 and a copy of the deposit slip.

That's not to say they couldn't have still put in 2022 but I would've had some recourse and as stated per my situation warranted. and I knew I would have to file an addendum and deal with the contributions in 2022 going into it.

To summarize it did work out picture attached below if the institution allows it you can mail(postmarked meaning stamped with the date by the USPS Clark and preferably with certified and or both tracking) a check on the 18th and it can be applied to the previous year