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@macuser_22   Thank you for the fast reply.   I checked my 2019 filing for the TSP excess.    I ended up including (via Form 4852) on 1040 Line 1 only the employee contribution and capital gains.  That's because I figured that the TSP admin will take back their contributed/matched amount.  Of course that did not happen because the 15 Apr 2020 deadlines passed.  So I should have added the employer's Auto 1% + Matching contributions.

 

Do you think I should amend the 2019 tax return 1040 Line 1 to include the additional (about $1000) employer's Auto 1% + Matching contributions in addition to the employee contribution and capital gains already there?  Or find a way to fix it with the 2020 tax filing (which I am working on now)?