Under the Blended Retirement System, the military matches your Thrift Savings Plan contributions up to 5% of your basic pay each pay period. That 5% is really two things stacked together: a 1% automatic contribution the government deposits whether you put in anything or not, plus up to 4% in matching once you start contributing your own money. To collect the full amount, you need to contribute at least 5% of your basic pay yourself and have completed two years of service.
Who Gets Matching in the First Place
Only service members enrolled in the Blended Retirement System receive government contributions to the TSP. If you entered service on or after January 1, 2018, you were automatically enrolled in the BRS and qualify.1Military Compensation and Financial Readiness. Retirement – Military Compensation Members already serving before that date who had fewer than 12 years in as of December 31, 2017, had a one-time chance to opt into the BRS during 2018, and those who opted in also get matching.2Military Compensation and Financial Readiness. The National Defense Authorization Act for Fiscal Year 2016 Created a Modernized Retirement System for the Military
If you stayed on the Legacy High-3 system, the government does not add anything to your TSP account. You can still contribute your own money and get the tax advantages, but there is no match and no automatic 1%.
How the 5% Breaks Down
The government’s contribution comes in three layers:
- A 1% automatic contribution based on your basic pay, deposited every pay period regardless of what you contribute.3Military Pay. A Guide to the Uniformed Services Blended Retirement System
- A dollar-for-dollar match on the first 3% of basic pay you contribute yourself.
- A 50-cent-on-the-dollar match on the next 2% you contribute (the portion between 3% and 5%).
Add it up at a 5% personal contribution and the government’s total also equals 5%: the 1% automatic, plus 3% matched at full rate, plus 1% more matched at half rate on your 4th and 5th percent.1Military Compensation and Financial Readiness. Retirement – Military Compensation Contribute less than 5% and you leave matching money uncollected. Contribute more than 5% and your account grows faster, but the government’s share does not go up further.
What a 5% Contribution Looks Like in Dollars
Take an E-5 with four years of service earning about $3,950 per month in basic pay in 2026. Contributing 5% sends roughly $197 a month from the paycheck into the TSP. The government then adds about $39 (the 1% automatic), $118 (dollar-for-dollar on the first 3%), and $39 (50 cents per dollar on the next 2%). That is roughly $197 in government money on top of the $197 the service member contributed. The account receives about $394 each month.
Only Basic Pay Counts
Every part of the match formula uses basic pay. Allowances like BAH and BAS, along with special and incentive pays, are not included in the calculation.3Military Pay. A Guide to the Uniformed Services Blended Retirement System You can elect to contribute from incentive, special, or bonus pay, and those contributions will grow tax-advantaged, but the government does not match them.4Thrift Savings Plan. TSP Benefits That Apply to Members of the Military Who Return to Federal Civilian Service
When Matching Starts
Two different clocks run at the start of your career, and they catch a lot of new service members off guard. The 1% automatic contribution begins 60 days after you enter service.3Military Pay. A Guide to the Uniformed Services Blended Retirement System The matching contributions on your own deposits do not begin until you complete two years of service.5The Thrift Savings Plan (TSP). Contribution Types
During those first two years you should still be contributing. The 1% automatic keeps flowing, your own contributions still grow tax-advantaged, and the moment you hit the two-year mark the matching switches on for whatever percentage you already have set. If you wait until year two to start contributing, you miss two years of compounding on your own money.
On the other end, both the automatic and matching contributions continue through your 26th year of service and then stop.1Military Compensation and Financial Readiness. Retirement – Military Compensation Serving beyond that point, your own contributions still go in; the government’s do not.
What You Keep If You Leave
Vesting decides whether the government’s money stays with you when you separate. The rules split by contribution type:
- Your own contributions and their earnings are always 100% yours from day one.
- The matching contributions (the up to 4% portion) are immediately vested. Whatever has landed in your account is yours.6militarypay.defense.gov. BRS Frequently Asked Questions
- The 1% automatic contribution vests after two years of service. Separate before then and the automatic 1% plus any earnings on it goes back to the government.7Office of the Law Revision Counsel. 5 U.S. Code 8432 – Contributions
Past the two-year point, everything in the account is yours no matter when you leave.3Military Pay. A Guide to the Uniformed Services Blended Retirement System Note the timing quirk: matching money is immediately yours the second it arrives, but you cannot receive any matching at all until you have already been in for two years, which is the same point the automatic 1% vests.
Getting to the Full 5%
New BRS participants entering service on or after October 1, 2020, are automatically enrolled at 5% of basic pay, which is exactly what you need to capture the full match.8The Official Army Benefits Website. Blended Retirement System Your election carries over from year to year on its own. If you were auto-enrolled and never changed anything, you are already set up to receive everything the government will give you.
If you lowered your contribution at some point, or opted in from the Legacy system and set a different percentage, check where you stand. To change it, log into MyPay, open the Pay Changes menu, and select the Thrift Savings Plan option. Enter a new percentage and choose whether to direct it to your Traditional balance, your Roth balance, or a split. Save the change, and it typically takes effect within two full pay cycles. Confirm the new deduction on your next Leave and Earnings Statement.
One footnote on the Roth choice: no matter how you split your own contributions, every dollar the government adds goes into your Traditional balance and will be taxed as ordinary income when you eventually withdraw it.9The Thrift Savings Plan (TSP). Traditional and Roth TSP Contributions That does not change the size of the match, only which bucket it lands in.