Working on a personal return for a new client who receives NATO pension. He is no longer overseas and has been in the US since mid-2021 - he's a US Citizen. There is no 1099-R since it's converted from EUR to USD. I tried searching the internet high and low but have found little guidance on where/how to report the taxes paid.

Does anyone have any guidance on where/how to report the "Tax Declaration" in ProSeries? I have the gross income entered under "other income" based on his 2021 return, but I don't know how I would provide the tax paid (deducted) or the insurance contributions.