HSA Contribution for 2019 was Incorrectly Marked for 2020 by HSA Account Administrator

[wpbauer]

In January 2020, I made a $3500 contribution to my HSA account with the intention of deducting it for tax year 2019.   I filed my 2019 taxes with the $3500 deduction included.   Later in the year, I noticed in my HSA account that the $3500 contribution was marked as being for year 2020.   I contacted the HSA administrator to have the year corrected to 2019, however they told me they could not change it because the filing date (in this case, July 15, 2020) had already passed.    I'm not sure what I should do about this situation.  I assume the HSA account administrator will send this contribution to the IRS as being for 2020, yet I filed my return for the same contribution to be for 2019.   Do I need to Amend my 2019 tax return to prevent an audit situation?   Is there any other way to have this contribution changed (from IRS standpoint) to 2019?   Thank you!

[Critter-3]

Your only move is to amend the return to correct this error.  

[Opus 17]

Do you have any proof that this was supposed to be a 2019 contribution?  Such as a notation on a canceled check, or a receipt from an electronic transfer?  If you can prove that you intended it to be a 2019 contribution and the bank made the error, they should reverse it no matter when it happened.

If this was your mistake for not selecting the correct date pin an online form, then you're stuck.  You need to amend your 2019 return to remove the contribution, and if you also made 2020 contributions, you will need to remove them so you don't have excess 2020 contributions. 

[wpbauer]

No I didn't think to notate anything on the check and on the deposit ticket there was a checkbox to indicate prior year contribution and I did not check it.   So I guess I'll need to amend my return.   Thanks so much for your input it is greatly appreciated.