Use this form to start, stop, or change the amount of your contributions to the Thrift Savings Plan (TSP).
Stop: to stop your contributions, you must complete Section III.
Basic pay: you must contribute at least 1% of basic pay to be eligible to contribute from other types of pay.
New election: your choice will cancel all previous elections.
Blank lines: if you leave a line blank next to a contribution type, the blank line indicates a contribution amount of 0%.
BRS: if you are a Blended Retirement System (BRS) member and stop your contributions during the year, you'll be automatically reenrolled at 5% of basic pay on January 1.
| Question | Answer |
|---|---|
| Form Name | Form TSP-U-1 |
| Form Length | 3 pages |
| Fillable? | Yes |
| Fillable fields | 37 |
| Avg. time to fill out | 7 min |
| Edition | 12/2025 |
| Where to send | Your service's finance or benefits office |
| Other names | TSP-U-1, TSP U-1, TSP-U1, Form TSP-U-1, TSP-U-1 Election Form |
| Official source | Form TSP-U-1 (Rev 12/2025), Thrift Savings Plan |
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