If you've served in the U.S. military or are considering joining, you've probably heard the question "what is the blended retirement system" raised during in-processing or financial briefings. The blended retirement system (BRS) is the Department of Defense's retirement plan that took effect on January 1, 2018, combining a traditional pension with government contributions to your Thrift Savings Plan (TSP).
Here's a fact that surprises many service members: under BRS, roughly 85% of the retirement benefit comes from sources you can take with you if you leave the military early, unlike the old "cliff-vested" pension.
The problem is that most service members and their families still don't understand how the pieces fit together, which leads to costly decisions about opting in, contributing, and planning. This guide breaks down the five essential facts about BRS — how it works, who qualifies, what it pays, and how to make the most of it.
Fact 1: BRS Combines Three Retirement Components
The blended retirement system is built on three parts that work together. Understanding each piece is the first step to planning your military finances.
- Defined benefit pension: A monthly annuity for life if you serve at least 20 years, calculated as 2% of your average highest 36 months of base pay multiplied by years of service (40% at 20 years, versus 50% under the legacy system).
- Thrift Savings Plan contributions: The government automatically contributes 1% of your basic pay to your TSP account after 60 days of service — you don't have to do anything to get it.
- Continuation Pay: A one-time cash bonus paid between your 8th and 12th year of service (most commonly at the 12-year mark), typically 2.5 to 3 times your monthly base pay for active duty members, in exchange for a commitment to serve additional time.
The key insight is that BRS shifts some retirement value from the pension into portable accounts. The Department of Defense explains that this design was intended to provide "retirement benefits to the approximately 83 percent of service members who do not serve 20 years" — a group that previously received nothing.
To apply this, log into your TSP account and confirm your government automatic 1% contribution is actually posting each month.
Understanding what is the blended retirement system starts with recognizing its three complementary components working together. A defined benefit pension, government-matched TSP contributions, and Continuation Pay form what is the blended retirement system.
Once you understand what is the blended retirement system, you will see why the 5% TSP match is considered free money. Leaving any match unclaimed means missing a core benefit of what is the blended retirement system.
Fact 2: The Government Matches Your TSP Contributions Up to 5%
This is where the blended retirement system gets powerful — and where too many service members leave free money on the table. After two years of service (or 60 days for new entrants on opt-in), the government will match your TSP contributions dollar-for-dollar up to 3% of basic pay, then 50 cents on the dollar for the next 2%.
| Contribution Scenario | Total Government Money | What to check |
|---|---|---|
| You contribute 0% | 1% (automatic only) | Are you leaving match dollars behind? |
| You contribute 3% | 4% total | Raise your contribution immediately |
| You contribute 5% | 5% total (maximum match) | Confirm "5%" in your contribution election |
| You contribute above 5% | Still 5% | Max out the match first, then consider more |
Contributing 5% captures every available matching dollar. A common scenario: an E-4 with three years of service contributing only 1% is essentially declining thousands of dollars per year in free compensation that belongs to them under BRS.
According to the Federal Retirement Thrift Investment Board, traditional TSP balances have grown substantially since BRS began, largely due to automatic enrollment and matching. To apply this today, log into your myPay account and change your TSP election to at least 5% of basic pay.
A key advantage of what is the blended retirement system is that you keep government TSP contributions even if you separate early. Unlike legacy High-3, what is the blended retirement system ensures your retirement benefits are portable when you leave.
Knowing what is the blended retirement system requires checking your service date relative to December 31, 2017. Those who joined after January 1, 2018 were automatically enrolled in what is the blended retirement system.
Fact 3: BRS Is Portable — You Keep the Government Contributions
Under the legacy "High-3" system, a service member who separated at 19 years and 11 months walked away with zero retirement pay. The blended retirement system fixes that in two important ways.
First, TSP contributions — including the government's automatic 1% and all matching dollars — are vested after two years of service. Once vested, that money is yours forever, with any growth, even if you separate next month. Second, you can roll your TSP into an IRA or another employer's 401(k)-type plan when you leave, keeping your money invested and tax-advantaged.
- Vested government contributions stay yours regardless of when you separate after the 2-year mark.
- TSP funds can be rolled into an IRA without triggering taxes (in the case of traditional TSP balances) if done correctly.
- This portability is why financial advisors often describe the blended retirement system as a "career-transition-friendly" plan.
Consider an airman who serves four years, contributes 5%, and receives matching funds the entire time. Those dollars, plus growth, follow her into civilian life. The blended retirement system makes that possible; the legacy plan would have paid her nothing. To apply this, verify your vesting status on your TSP account statement before you make any separation plans.
To fully grasp what is the blended retirement system, remember the pension pays 40% of your highest-36-month base pay at 20 years. That 10% reduction versus High-3 is a deliberate trade-off built into what is the blended retirement system.
If you were serving under High-3 and missed the 2018 deadline, what is the blended retirement system is no longer available to you. The opt-in window for what is the blended retirement system closed permanently on December 31, 2018.
Fact 4: Who Qualifies — and Who Could Opt In
Eligibility under the blended retirement system depends entirely on your service history as of December 31, 2017.
- Automatic enrollment: Anyone who joined the armed forces on or after January 1, 2018 is enrolled in BRS from day one.
- Opt-in window: Service members with fewer than 12 years of service (or Reserve/National Guard members with fewer than 4,320 retirement points) as of December 31, 2017 could choose BRS during the open window that closed on December 31, 2018.
- Legacy members protected: Anyone with 12 or more years of service at the end of 2017 stays in the legacy High-3 system permanently.
The opt-in decision required mandatory financial counseling because the answer genuinely varies by person. The Government Accountability Office reported that roughly one-third of eligible active duty members chose to switch to BRS, suggesting many weighed the portability benefit against a smaller pension multiplier.
If you are currently serving under legacy High-3, that choice is locked in — but you can still contribute to TSP voluntarily (without matching). To apply this, review your retirement system designation on your Leave and Earnings Statement and confirm it matches your expectations.
Deployment highlights a unique benefit of what is the blended retirement system because combat zone pay remains tax-exempt. Your TSP contributions and government match continue, making what is the blended retirement system especially valuable while deployed.
For Reserve and National Guard members, what is the blended retirement system converts earned retirement points into equivalent years of service for pension calculations.
Fact 5: BRS Requires 20 Years for the Pension — But Pays Less Than Legacy
The blended retirement system pension math is straightforward but important to internalize. If you serve 20 years, you receive 40% of your highest-36-month average base pay, versus 50% under High-3. Each additional year adds 2% more, capping at 40 years of service.
- 20 years: 40% of base pay average (vs. 50% legacy)
- 25 years: 50% (vs. 62.5% legacy)
- 30 years: 60% (vs. 75% legacy)
Does the trade-off hurt? Not if you maximize TSP. Financial analyses from the Military Compensation and Retirement Modernization Commission, which originally proposed the blended retirement system, showed that a service member who contributes at least 5% for a full career typically comes out ahead in total lifetime value — especially if investment growth compounds over decades.
The catch is discipline: the pension comparison only favors BRS when you actually invest the matching dollars and leave them alone. To apply this, run your own numbers using the official DoD BRS Comparison Calculator to see your personal legacy-versus-BRS projection.
At exactly 20 years, what is the blended retirement system pays a smaller pension than High-3 but compensates with your accumulated TSP balance and government matching.
Continuation Pay under what is the blended retirement system is taxable income paid directly to you, not automatically deposited into your TSP.
Frequently Asked Questions About what is the blended retirement system
Can I still join BRS if I missed the 2018 opt-in window?
No — the opt-in window permanently closed on December 31, 2018. If you were serving under the legacy High-3 system at that time and didn't elect the blended retirement system, you remain under High-3 for your entire career.
The one exception: anyone who separated and later rejoined with a service break that made them a "new entrant" would be enrolled in BRS automatically.
Many service members still ask what is the blended retirement system and whether they can join after 2018. The answer is no, because what is the blended retirement system opt-in window closed permanently on December 31, 2018.
A common question during deployment is what is the blended retirement system and how it handles TSP contributions. Your TSP contributions and government match continue during deployment, which is a key benefit of what is the blended retirement system.
What happens to my TSP if I'm deployed?
Your contributions and the government match continue during deployment. In fact, deployment can be an advantage under the blended retirement system because combat zone pay is tax-exempt, meaning you can contribute tax-free dollars that grow tax-free in a Roth TSP. Many service members dramatically increase contributions during deployment for this reason.
Reserve members often ask what is the blended retirement system and how it affects their pension calculation.
If you leave at exactly 20 years, you might wonder what is the blended retirement system and how it compares to High-3 on pension alone.
Is the BRS pension affected by the 2% multiplier for Reserve members?
Yes, but the calculation differs. Reserve and National Guard members earn retirement points rather than years of creditable service. The blended retirement system converts points to equivalent years — typically dividing annual points by 360 — so a Reservist with 20 good years receives 40% of a proportionally reduced base pay figure, not 40% of active duty pay.
A frequent question about Continuation Pay is what is the blended retirement system and whether that pay counts toward your TSP or taxes.
What if I leave at exactly 20 years — is BRS worse than High-3?
On pension alone, yes: you'd receive 40% instead of 50%. But the blended retirement system adds your TSP balance, which includes up to 18 years of government matching contributions plus investment growth.
For members who contributed 5% throughout a career, the TSP balance frequently more than offsets the 10% pension difference — but only when those contributions were actually made and left invested.
Does Continuation Pay count toward my TSP or taxes?
Continuation Pay is paid directly to you as taxable income, not into your TSP. You'll receive a W-2 for it in the year paid, and you can choose to contribute a portion to TSP yourself.
Timing matters: if you receive it in a low-income year or while deployed, your effective tax rate may be lower — worth checking with a military financial counselor before the payout.
Conclusion: Make the Blended Retirement System Work for You
Understanding what is the blended retirement system comes down to five facts: it blends a pension, TSP contributions, and Continuation Pay; the government matches up to 5%; your funds are portable after two years; eligibility is tied to your service history as of 2017; and the 20-year pension pays 40% instead of 50%.
The system rewards proactive members who take ownership early.
- Contribute at least 5% of basic pay to capture the full government match.
- Verify your vesting status and retirement system designation before separation.
- Use the DoD BRS Comparison Calculator to model your personal numbers.
- Revisit your TSP allocation annually, especially around deployments.
The blended retirement system hands you real retirement value whether you serve four years or forty — but only if you claim it. Log into myPay today and confirm your TSP contribution is set to 5%.
