BRS vs High-3: Which Military Retirement Is Actually Worth More?
The two systems in one paragraph
Both retirement systems pay a defined-benefit pension that vests at 20 years of service. The difference is the multiplier. Legacy High-3 multiplies your highest-36-month average basic pay by 2.5% per year of service — so 20 years earns a 50% pension. The Blended Retirement System (BRS), which covers everyone who entered service on or after 1 January 2018, uses a 2.0% multiplier — 20 years earns 40%. In exchange, BRS adds automatic and matching contributions to your Thrift Savings Plan worth up to 5% of basic pay (1% automatic plus up to 4% match). Legacy members get no match at all.
So the honest question is not which multiplier is bigger — obviously 2.5% beats 2.0%. It is: does the TSP match plus its decades of compound growth make up the pension gap? That is a math question, and math has an answer.
The pension gap, in dollars
Take a service member whose highest-3-year average basic pay is $75,000, retiring at 20 years. Under Legacy, the pension is 20 × 2.5% = 50% × $75,000 = $37,500/year, or $3,125/month. Under BRS it is 20 × 2.0% = 40% × $75,000 = $30,000/year, or $2,500/month. That is a $625/month gap — $7,500 a year, every year of retirement, for life, and it is indexed to inflation via COLA on both sides.
Over a long retirement that gap is enormous. A pension worth $625/month more, paid from age 42 to 85 and adjusted for inflation, is worth well over $200,000 in present-value terms. If you stopped the analysis here, Legacy wins in a landslide. But you cannot stop here, because BRS members are simultaneously building a second asset the Legacy member does not have.
The match is the whole argument
Under BRS, once you contribute 5% of your basic pay, the government adds 5% on top — 1% automatic plus a 4% match (dollar-for-dollar on the first 3%, then 50 cents per dollar on the next 2%). On $55,000 of average basic pay across a 20-year career, that government money is roughly $2,750 per year flowing into your TSP. Invested in the C Fund and compounding at a long-run 7% real-ish nominal return, twenty years of those contributions grows to somewhere around $115,000–$130,000 — money that is yours, portable, and inheritable, unlike any pension.
This is the crossover engine. Before you decide anything, it is worth running your own pay and contribution numbers through our BRS vs High-3 retirement value calculator, which computes the present value of both pensions and layers the accumulated TSP match on top so you see the single net figure that actually matters.
A side-by-side worked example
Here is the full picture for our $75,000-high-3, 20-year retiree who contributes 5% and invests the match, versus doing nothing beyond the pension. Values are illustrative present-value estimates to age 85.
| Component | Legacy High-3 | BRS (5% contributor) |
|---|---|---|
| Pension multiplier | 2.5% × 20 = 50% | 2.0% × 20 = 40% |
| Monthly pension | $3,125 | $2,500 |
| Lifetime pension (PV) | ~$690,000 | ~$552,000 |
| Government TSP match (grown) | $0 | ~$120,000 |
| Continuation Pay (invested) | $0 | ~$25,000 |
| Total lifetime wealth (PV) | ~$690,000 | ~$697,000 |
In this scenario BRS edges ahead by roughly $7,000 — a near tie that tips toward BRS only because the member captured the full match and Continuation Pay. Cut the contribution to 3% and BRS falls behind. Serve past 20 years and the richer Legacy multiplier pulls further ahead each additional year, because the pension gap widens while the match window is fixed.
Length of service changes the answer
The break-even is sensitive to how long you serve. Because the multiplier gap compounds with every additional year (each year is worth 0.5% more of your high-3 under Legacy), the longer you serve, the more Legacy pulls ahead — assuming you were eligible for it. A 30-year Legacy retiree earns a 75% pension; a 30-year BRS retiree earns 60%, and the fixed TSP match cannot close a 15-percentage-point gap on a large pension base. Conversely, the value of the pension itself depends heavily on your final high-3 average and how long you live to collect it. Our military pension COLA lifetime-value calculator shows how inflation adjustments compound the pension over a 40-year retirement — often the single largest number in the whole comparison.
Who each system favors
BRS favors the disciplined contributor, anyone who might separate before 20 years (you keep the vested match even with no pension), and members who value portable, inheritable wealth. Legacy favors career members who will serve well past 20 years, and — bluntly — anyone who will not contribute to TSP, because for a non-contributor BRS is simply a smaller pension with no offset. If you are in BRS and reading this, the takeaway is not to second-guess a system you cannot leave; it is to contribute at least 5% today so the trade actually works in your favor.
Frequently asked questions
Can I switch between BRS and Legacy High-3?
No. Anyone who entered service on or after 1 January 2018 is automatically in BRS with no option to switch. The one-time opt-in window for eligible mid-career members (fewer than 12 years of service as of 31 December 2017) closed on 31 December 2018. Your system is fixed; your contribution rate is not.
What happens to the TSP match if I separate before 20 years?
You keep it. Government matching contributions vest after two years of service, and they are yours to roll over or keep in TSP even if you never earn a pension. This is a core BRS advantage: a member who serves eight years and separates leaves with real invested money, whereas the same member under Legacy would leave with nothing.
Does BRS really pay a 20% smaller pension?
The multiplier is 20% smaller in relative terms (2.0% vs 2.5%), which translates to a pension that is 20% lower for the same years and pay. On a $37,500 Legacy pension the BRS equivalent is $30,000. Whether the TSP match closes that gap depends on your contribution rate and investment returns over your career.
What is Continuation Pay and does it change the math?
Continuation Pay is a BRS-only mid-career retention bonus, paid between 8 and 12 years of service, worth 2.5 to 13 times monthly basic pay depending on your branch. If you invest it in TSP rather than spending it, it adds meaningfully to the BRS side of the ledger — often $15,000 to $40,000 of additional grown wealth by retirement.
How does the TSP match percentage actually work?
The government automatically contributes 1% of your basic pay regardless of what you do. Then it matches dollar-for-dollar on your first 3% and 50 cents per dollar on your next 2%. So contributing 5% yields the full 5% government contribution. Contributing 4% yields 4.5%; contributing 3% yields 4%; contributing 0% still yields the automatic 1%.
Is the pension the same under both systems if I retire on disability?
Disability retirement uses either your years-of-service multiplier or your disability percentage, whichever is higher, applied to your high-3 average. The multiplier difference (2.0% vs 2.5%) still applies to the years-of-service path, so BRS disability retirees using that path receive a proportionally smaller annuity, partially offset by their vested TSP.
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