There is a fixed 1% automatic contribution whether or not you contribute to TSP. For example, if you earn $70,000 annually, you will receive an automatic $700 on top of your salary. On the first 3%, there's a full hundred percent dollar-for-dollar match. For the remaining 2%, there's a 50 cents-for-dollar match. Jun 01, 2021 · The current matching percentage is the first 3% matches dollar for dollar. The next 2% matches at 50 cents per dollar. Contributions above 5% are not matched. For 2021, the max contribution amount is $19,500 annually, or $26,000 annually if over age 50. TSP contributions can be made with either Traditional (pre-tax) or Roth (post-tax) dollars..