I recently learned of a reduction to taxable pension income that I am eligible for as a retired public safety officer, but have already filed my Federal income tax. I am seeking information on how to file an amended return that reflects this change. Per IRS Publication 575, I have to enter the reduced amount of taxable retirement income at line 5b , and enter "PSO" in the space next to the box. I don't see a way to make the change at line 5b of the 1040-SR in TurboTax desktop. Any idea of how to amend the 1040-SR manually?
