Should I expect to receive a 1099 or other related tax form from the TSP? I have not withdrawn/liquidated any % of this account, so I don't believe I should be receiving anything. Any guidance would be appreciated.
Unless you are getting payments from your TSP, probably not. It isn't taxed until you withdraw it and it is excluded from your W-2 income. I just got my 1099 yesterday.
You are correct, you will see on your W2 the amount you contributed listed which also if you notice will be the difference between what is on block # 1 and block # 3 (which is the taxable income for SS and medicare purposes). TSP will only reduce your taxable income for federal and local taxes but not for SSN & medicare.
