TSP Agency Matching: How to Get the Full 5%
For FERS employees, the Thrift Savings Plan is where the government helps you build wealth directly. Contribute enough and you can receive a total 5% agency contribution every pay period (1% automatic plus up to 4% matching) — but contribute too little and you forfeit free money you can never recover.
- FERS employees get an automatic 1% agency contribution regardless of what they save.
- The match adds up to 4% more — for a total of 5% — when you contribute at least 5%.
- The match is dollar-for-dollar on the first 3% and 50 cents on the next 2%.
- Contributing less than 5% leaves guaranteed money on the table.
The two kinds of agency money
FERS employees receive two distinct forms of agency contribution. The first is the Agency Automatic Contribution: 1% of your basic pay, deposited whether or not you contribute anything yourself. The second is the Agency Matching Contribution, which only happens when you contribute from your own pay.
How the match is structured
| Your contribution | Agency automatic | Agency match | Total agency |
|---|---|---|---|
| 0% | 1% | 0% | 1% |
| 3% | 1% | 3% | 4% |
| 4% | 1% | 3.5% | 4.5% |
| 5% or more | 1% | 4% | 5% |
The matching tiers are dollar-for-dollar on the first 3% of pay you contribute, then 50 cents on the dollar for the next 2%. Once you contribute 5% of your own pay, you receive the full 4% match plus the 1% automatic — a total of 5% from the agency on top of your own 5%. Contributing more than 5% is still wise for your own savings, but it does not increase the match.
Watch out for "front-loading"
The match is calculated each pay period, not annually. If you contribute aggressively early in the year and hit the IRS elective deferral limit before December, your contributions stop — and so does the match for the remaining pay periods. To capture every dollar of match, spread your contributions evenly across all pay periods so you are contributing at least 5% in each one.
Traditional vs Roth and the match
You can contribute as traditional (pre-tax) or Roth (after-tax), but note that all agency contributions are always deposited into the traditional balance, regardless of how you contribute. This is just a tax-treatment detail — it does not reduce the amount you receive.
Project how the match compounds over time with the TSP calculator.
Do CSRS employees get a TSP match?
No. Agency automatic and matching contributions are a FERS feature. CSRS employees may contribute to the TSP but receive no agency money.
Does the Roth TSP get matched?
Your Roth contributions count toward earning the match, but the matching dollars themselves are always deposited into your traditional balance.
What happens if I stop contributing mid-year?
You keep the 1% automatic contribution, but you lose the matching contributions for any pay period in which you contribute nothing.
Authoritative reference: TSP.gov. This site is not affiliated with the U.S. government.