According to Federal tax liability subtraction in the 2021 Oregon Income Tax - Form OR-40 Instructions, Your federal income tax subtraction may be reduced by any 2021 federal economic stimulus payments you received in 2021.
Is this what you’re seeing? This is actually a reduction in the subtraction amount.
The Line 10 instructions in the Federal tax worksheet in the publication linked above state: Enter any 2021 federal economic stimulus payments you received in 2021 plus your recovery rebate credit, if any, from Form 1040 or 1040-SR, line 30. Refer to your IRS Notice 1444-C for the amount of stimulus payments you received in 2021.
If this doesn’t appear to be what’s happening, please provide more information that might be helpful.
[edited 2-14-22|6:15 pst]
