The Thrift Savings Plan (TSP) is one of the few parts of your federal retirement that you directly control, which makes contribution mistakes especially costly.
How the Agency Match Works
If you are a federal employee covered under FERS, your agency contributes to your TSP every pay period, whether you contribute anything or not. That automatic 1% agency contribution is yours regardless. Beyond that, the government matches your contributions on the following schedule:
- Dollar-for-dollar on the first 3% of your salary you contribute
- Fifty cents per dollar on the next 2% you contribute
Contribute at least 5% of your salary each pay period and you receive the full 5% agency match on top of your own contributions. Contribute less, and you leave part of that match on the table… permanently. There is no way to go back and recover a missed match from a prior pay period. This is one of the biggest TSP mistakes that federal workers can make.
Avoid Front-Loading Contributions and Losing the Match
Many higher-earning federal employees try to maximize their TSP by front-loading contributions early in the year, reasoning that money invested sooner has more time to grow. This can lead to serious consequences further down the road.
TSP matching is calculated per pay period, not on an annual basis. If you hit the IRS contribution limit before the final pay period of the year, your contributions stop, and so does the agency match for every pay period after that. The automatic 1% continues, but the matching contributions tied to your own deferrals do not.
The fix is straightforward: pace your contributions evenly across all 26 pay periods. The 2026 elective deferral limit is $24,500, which works out to approximately $942 per pay period for employees under age 50. If you are in a catch-up eligible age range, your combined regular and catch-up contribution amounts should be spread the same way.
2026 TSP Contribution Limits
| Age Group | 2026 Annual Limit | Per Pay Period Target |
|---|---|---|
| Under 50 | $24,500 | ~$942 |
| 50–59 and 64+ | $24,500 + $8,000 = $32,500 | ~$1,250 |
| 60–63 (SECURE 2.0 Enhanced) | $24,500 + $11,250 = $35,750 | ~$1,375 |
Source: IRS Notice 2025-67; SECURE Act 2.0. Amounts subject to annual cost-of-living adjustments.
Checking Your Contribution Pacing
If you received a bonus, a pay increase, or made a contribution rate change earlier this year, it is worth confirming that your current contribution rate will not push you to max out before the final pay period.
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