Check your father’s prior year returns to see the taxable amount reported. You probably don’t have to go all the way back to the 1980s.
The last few years will show what’s being reported. As you mentioned, there’s no guarantee your father did his taxes correctly. Civil Service retirement is complicated.
You may be receiving an error because either the plan cost or amount previously recovered are not correct.
Depending on the software previously used, there will probably be a worksheet showing these amounts.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
