The Thrift Savings Plan (TSP) is a qualified retirement plan.
If it the regular TSP (not the Roth that was started later), it is taxable income to you.
The IRA/SEP/SIMPLE box will NOT be checked for the 1099R.
It is Federal Retirement.
You did something else with it (if you did not roll it over to another retirement account.
If this does answer your question, please post a comment and I will provide additional help. (I get a TSP 1099R also)
