After you file

@Dondrd - sounds you are doing this manually

 

for 2020 and 2021, you could take an adjustment to income for CASH contributions if you were taking the STANDARD deduction.  It's limited to $300 in 2020 per tax return and $300 per tax payer (so max $600) in 2021. It would appear on line 10b in 2020 and line 12b in 2021 tax return. 

 

if you ITEMIZE, then the cash contributions noted above  are simply deducted as part of Schedule A. Line 10b in 2020 and line 12b in 2021 are zero by definition. 

 

does that help?