The High-3 retirement system gives you 50% of your highest 36 months' base pay at 20 years. BRS gives you 40% plus TSP matching. On paper, High-3 wins for anyone who serves 20+ years. But the real answer depends on whether you actually make it to 20, and how much you contribute to TSP.
The Core Difference
High-3 uses a 2.5% multiplier per year of service. At 20 years, that's 50%. At 30 years, 75%. BRS uses a 2.0% multiplier: at 20 years, that's 40%. However, BRS adds government TSP matching up to 5% of base pay throughout your career, plus a one-time continuation pay bonus at 12 years (2.5x-13x monthly base pay depending on service).
E-7 at 20 Years: Head-to-Head
High-3 pension: 50% × $6,246 = $3,123/month ($37,476/year)
BRS pension: 40% × $6,246 = $2,498/month ($29,976/year)
Difference: $625/month ($7,500/year) in favor of High-3
BRS TSP value at 20 years: $180,000-$350,000+ depending on contributions and market returns
Calculate your specific retirement pay with the Retirement Calculator.
When BRS Actually Wins
BRS is better if you separate before 20 years. Under High-3, separating at 15 years means you get zero pension. Under BRS, you keep your TSP matching, potentially $100,000-$200,000 in retirement savings. Since roughly 83% of enlisted members don't reach 20 years, BRS is actually the better system for the majority of service members.
BRS also wins if you're a disciplined TSP investor. The 5% match compounding over 20 years in the C or S fund historically outperforms the $7,500/year pension gap, especially if you contribute your own 5%+ on top of the match.
When High-3 Clearly Wins
If you're going to serve 20+ years regardless, and especially if you'll serve 25-30 years, High-3 is mathematically superior. The pension gap grows with each year beyond 20 (2.5% vs 2.0% per additional year), and a guaranteed inflation-adjusted pension is worth more than a market-dependent TSP balance for risk-averse retirees.
The Bottom Line
If you entered after January 1, 2018, you're in BRS and the decision is made. If you opted in during the 2018 window, you made the right call if you weren't sure about 20 years. If you're High-3 and committed to 20+, you have the better deal. Either way, maximize your TSP contributions; that's the one lever you control regardless of system.
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