High-3 vs BRS Military Retirement — Which System Pays More?

The high-3 vs BRS military retirement debate is one I have sat through hundreds of times — across kitchen tables in base housing, in unit dayrooms, and in one-on-one financial counseling sessions that sometimes ran two hours longer than scheduled. I spent 22 years in the Army, retired as a Chief Warrant Officer Three, and then spent another decade as a Certified Financial Planner working almost exclusively with active duty and retired service members. I have run these numbers in every direction. What I want to give you here is not a textbook summary. It is a real comparison, with 2026 pay table figures, broken down by rank, so you can see exactly what each system puts in your pocket.

Most explainers on this topic give you the formula and call it a day. That is not useful when you are trying to decide whether to stay in, how to plan your retirement date, or how to advise a junior Soldier who just hit their four-year mark. Numbers matter. So let us get into them.

High-3 vs BRS — The Core Difference in One Number

The entire pension gap between these two systems comes down to one multiplier. Under the legacy High-3 system, you earn 2.5% of your average base pay for each year of service. Under the Blended Retirement System — BRS — that multiplier drops to 2.0%.

At 20 years of service, that math plays out like this. High-3 gives you 50% of your High-3 average base pay as a monthly pension. BRS gives you 40%. That is a 10 percentage-point gap that follows you for the rest of your life. And because military retirement is not a fixed dollar amount but a percentage of base pay, the higher your rank at retirement, the larger that gap becomes in raw dollars.

Probably should have opened with this section, honestly — because once you internalize that 2.5% versus 2.0% difference, everything else in this comparison makes more sense.

There is one important catch. BRS members also receive government contributions to their Thrift Savings Plan. The government matches up to 5% of base pay after the first two years of service, with a three-year vesting schedule kicking in at year two. So BRS is not just a reduced pension — it is a pension plus a funded investment account. Whether that trade is worth it depends entirely on your specific career path.

Real Dollar Comparison by Rank — 2026 Pay Tables

Here is where things get concrete. I pulled the 2026 military pay tables and ran the numbers for three common retirement ranks. For High-3 calculations, I used the average of the member’s highest 36 months of base pay, which in most cases means the final three years before retirement.

E-7 Retiring at 20 Years

An E-7 with 20 years of service in 2026 earns a monthly base pay of approximately $6,010. The High-3 average over their final three years comes in around $6,010 per month — assuming they have been at that pay grade for at least three years, which is common.

• High-3 pension: $6,010 × 50% = $3,005 per month
• BRS pension: $6,010 × 40% = $2,404 per month
• Monthly gap: $601 in favor of High-3
• Annual gap: $7,212 in favor of High-3

That is real money. Over a 20-year retirement horizon, that pension gap adds up to roughly $144,240 before cost-of-living adjustments — and military retirement does receive annual COLA increases, which compound the difference over time.

O-5 Retiring at 20 Years

A Lieutenant Colonel or Commander at 20 years draws significantly more. Base pay for an O-5 with 20 years of service runs approximately $10,142 per month in 2026.

• High-3 pension: $10,142 × 50% = $5,071 per month
• BRS pension: $10,142 × 40% = $4,057 per month
• Monthly gap: $1,014 in favor of High-3
• Annual gap: $12,168 in favor of High-3

At the O-5 level, the pension difference is nearly $1,000 a month. Over 25 years of retirement, that is over $300,000. The higher the rank, the bigger the High-3 advantage — assuming you hit 20 years.

E-5 Who Separates at 8 Years

This is the scenario BRS was actually designed for. An E-5 who separates at 8 years under the old High-3 system walks away with zero pension. Nothing. Under BRS, that same Soldier leaves with a vested TSP account that includes years of government matching contributions. That is not a small thing.

The TSP Match — Where BRS Makes Up the Difference

Frustrated by watching junior enlisted members leave after 6 or 8 years with no retirement benefit at all, Congress built the TSP match into BRS specifically to address that gap. Here is how it works in practice.

The government automatically contributes 1% of base pay to your TSP from day one, regardless of whether you contribute anything yourself. After 60 days of service, they match your contributions dollar-for-dollar up to 3% of base pay, then 50 cents on the dollar for the next 2%. Contribute 5% yourself, get 5% from the government. Full match vests at two years of service.

For that E-7 we talked about earlier — earning roughly $6,010 per month — a full 5% government match equals $300.50 per month going into their TSP. Over a 20-year career, assuming they invested from year two onward and earned a conservative 6% average annual return in a fund like the C Fund or an appropriate Lifecycle fund, that TSP match alone grows to approximately $130,000 to $155,000 by retirement, depending on exact timing and contribution consistency.

That does not fully close the $144,240 pension gap for the E-7, but it gets close. And at higher ranks, where base pay is larger, the TSP match amounts are larger too — though so is the pension gap. The math is tight. It never produces a clean knockout winner for the full 20-year retiree.

What the TSP match does do, unambiguously, is create value for service members who leave before 20 years. There is no equivalent under High-3. That is the genuine innovation of BRS.

Who Wins at 20 Years — Who Wins at 30

Let me give you the direct answer I give clients who ask this question.

If you are certain you will retire with 20 or more years: High-3 produces a higher guaranteed lifetime pension. The math does not lie. Fifty percent beats forty percent every single month until you die, and then it continues for surviving spouses under the Survivor Benefit Plan. The TSP match under BRS helps, but it rarely catches up entirely — especially for mid-grade officers and senior NCOs whose pension amounts are large.

If you might leave before 20 years: BRS wins, and it is not particularly close. A service member who separates at year 12 with a vested TSP account containing tens of thousands in government contributions is in a materially better position than one who leaves under High-3 with a pension of exactly zero dollars.

At 30 years of service, the multiplier difference grows further. High-3 pays 75% of base pay. BRS pays 60%. For a senior enlisted member or field-grade officer, that gap at 30 years can exceed $2,000 per month. That is $24,000 per year. The TSP match, while compounding nicely by that point, does not generate $24,000 in annual distributions for most enlisted retirees. High-3 wins decisively at 30 years.

The honest lesson I took from counseling hundreds of service members — and one I wish I had communicated better early in my practice — is that the decision is really a bet on your own career longevity. Most 19-year-olds who enlist are convinced they will do 20. The ones who make it to 20 are fewer than the services would prefer. BRS hedges that uncertainty. High-3 rewards certainty.

The BRS Opt-In Is Closed — What If You Missed It

Service members who were already on active duty before January 1, 2018, had a window — from January 1, 2018 through December 31, 2018 — to voluntarily opt into BRS. That window is permanently closed. The decision was irrevocable. You cannot go back and change it now.

Burned by confusion during that opt-in period, plenty of experienced NCOs and officers stayed in High-3 without fully understanding what they were keeping or giving up. If that is you, here is what you need to know going forward.

Staying in High-3 means you keep the 2.5% multiplier. That is the good news — and for career service members who hit 20 or more years, it was probably the right call. The bad news is you receive zero automatic government TSP contributions and zero matching contributions. You can still contribute to TSP yourself, which you absolutely should, but you are funding it entirely out of your own pocket.

If you are a High-3 member currently serving, the practical move is to treat your own TSP contributions as your version of the BRS match — contribute at least 5% of base pay to TSP, preferably into a Roth TSP if your income level makes that advantageous, and invest in age-appropriate funds. You will not get matching dollars, but you will at least build a supplemental retirement account alongside your eventual pension.

New accessions — anyone who joined after January 1, 2018 — are automatically enrolled in BRS. They have no choice in the matter. For them, the decision framework is simpler: understand what you have, contribute the full 5% to get the full government match from day one, and make your TSP work as hard as possible to offset the lower pension multiplier.

The systems are different. Neither is objectively superior for every person. But the numbers, run correctly against 2026 pay tables and realistic career scenarios, tell a clear enough story — and that story depends almost entirely on how long you plan to serve.