Military Retirement High-36 vs. BRS: Complete Financial Comparison 2026
Quick Answer
High-36 military retirement pays 50% of average base pay after 20 years; BRS pays 40% pension + your TSP balance. High-36 wins if you serve exactly 20 years and live into your 80s (pure pension is higher). BRS wins if you serve 21+ years, separate before 20 (you keep TSP), or want flexibility. For a typical E-5 career (20 years), High-36 pension is $15,000/year, BRS is $12,000/year pension + $300,000 TSP = BRS is superior. The break-even point depends on longevity, post-military income, and tax planning.
Understanding High-36 Military Retirement
High-36 applies to all service members who joined before January 1, 2018 (or pre-2018 joiners who opted out of BRS during the grandfathering window).
High-36 Calculation
Pension = Years of Service × 2.5% × Average of Highest 36 Months Base Pay
Example: E-5 Retiring at 20 Years (2026 Rates)
- Highest 36 months base pay: $2,662/month (current E-5 rate for entire 3-year period)
- Calculation: 20 years × 2.5% × $2,662 = $1,331/month pension
- Annual pension: $15,972
- Total lifetime value (age 38 to 85, 47 years): $15,972 × 47 = $750,684
High-36 at 24 Years vs. 20 Years
| Years of Service | Pension Multiplier | E-5 Base Pay | Annual Pension | Lifetime Value (47 yrs) |
|---|---|---|---|---|
| 20 years | 50% | $31,944 | $15,972 | $750,684 |
| 24 years | 60% | $31,944 | $19,166 | $900,802 |
| 26 years | 65% | $31,944 | $20,764 | $976,128 |
| 30 years | 75% | $31,944 | $23,958 | $1,126,026 |
Key Insight: Each additional year of High-36 service adds 2.5% to your multiplier. Staying 4 extra years (20→24) increases pension by 10%, adding $150,000+ to lifetime value.
Understanding BRS Military Retirement
BRS applies to all service members who joined on or after January 1, 2018. It has three components: automatic TSP contributions, matching contributions, and a reduced pension.
BRS Components at 20 Years
Automatic Contributions: 5% of base pay, monthly, for entire career (20 years = 240 months)
Military Matching: Up to 4% additional, if you contribute it yourself (vests after 2 years)
Pension: 40% of average highest 36 months base pay (vs. 50% in High-36)
Example: E-5 BRS Career (20 Years)
| Component | Calculation | Amount |
|---|---|---|
| Automatic TSP | $2,662 × 5% × 12 × 20 = | $31,944 |
| Military Match (4%) | $2,662 × 4% × 12 × 20 (with 6.5% growth) = | $31,680 |
| TSP Growth (20 years, 6.5% avg) | Compounding on $63,624 contributions = | $203,760 |
| Total TSP Balance at 20 Years | $299,364 | |
| Pension (40% × $31,944) | 40% × E-5 base = | $12,778/year |
| Pension Lifetime Value (47 years) | $12,778 × 47 = | $600,566 |
| Total Retirement Value (Pension + TSP) | $899,930 |
High-36 vs. BRS: Side-by-Side Comparison
| Factor | High-36 | BRS |
|---|---|---|
| Pension at 20 years (E-5) | $15,972/year (50%) | $12,778/year (40%) |
| Pension lifetime value (20–85) | $750,684 | $600,566 |
| TSP balance at 20 years | $0 | $299,364 |
| Total lifetime value (pension + TSP) | $750,684 | $899,930 |
| BRS Advantage | $149,246 | |
| Vesting | 20 years required | Immediate (5%) + 2 years (match) |
| Portability if separate before 20 | $0 | $299,364 (TSP) |
| Tax diversification | Entirely pension (100% taxable) | Pension + TSP (some tax-free if Roth) |
Key Takeaway: Over 47 years of retirement, BRS out-values High-36 by ~$150,000 due to portable TSP wealth and tax flexibility.
When High-36 Wins (Niche Scenarios)
Scenario #1: 20-Year Exactly, Long Longevity
If you serve exactly 20 years and live to 95+:
- High-36 E-5: $15,972/year × 57 years (age 38–95) = $911,104
- BRS E-5: $12,778/year + $299,364 TSP = $911,110
Draw. But psychology matters: High-36 retirees often feel "richer" earlier (higher monthly pension check). In reality, the TSP in BRS could be invested conservatively and generates similar lifetime income.
Scenario #2: No Spending Discipline; Prefer Income Annuity
You're bad with money. You'd spend any lump sum (TSP) immediately. High-36's guaranteed $15,972/year pension is forced savings (annuity) that you can't blow.
BRS's $12,778/year pension + $300k TSP tempts you to spend the TSP on a boat. In that case, High-36 was better for your discipline.
Scenario #3: You Join Military to Reach 20 Years Exact, Then Retire
Rare, but possible: 20-year enlistee who knew they'd separate at 20 (no long military career, no post-military income). High-36 pension is your sole income source, and it's higher than BRS.
For this person, High-36 was objectively better (20-year pension is permanent, TSP is spent within 5 years).
When BRS Wins (Most Scenarios)
Scenario #1: You Might Separate Before 20 Years
BRS makes sense because TSP is yours at any point. If you separate at:
- 5 years: High-36 = $0, BRS = $100,000 TSP
- 10 years: High-36 = $0, BRS = $150,000 TSP
- 18 years: High-36 = $0, BRS = $250,000 TSP
- 20 years: High-36 = $750k lifetime, BRS = $900k lifetime
The fact that most modern military careers are NOT 20-year lock-ins favors BRS's flexibility.
Scenario #2: You'll Earn High Post-Military Income
O-3 separates at 20 years. High-36 pension: $100,000/year. Total retirement income: $100k + Social Security + post-military job ($150k) = $250k total.
BRS: $80k pension + $400k TSP + post-military job = same $250k total, but with $400k lump sum for investment/flexibility.
Post-military earners benefit from TSP's flexibility; it can be strategically withdrawn (Roth conversions, charitable donations, etc.) rather than forced into annuity structure.
Scenario #3: You Plan to Work Past 20 Years (23–30 Years)
Extra years of BRS service = extra TSP contributions + compounding.
| Service | High-36 Multiplier | High-36 Pension | BRS Pension | BRS TSP (estimated) | Total BRS |
|---|---|---|---|---|---|
| 20 years | 50% | $15,972 | $12,778 | $299,364 | $899,930 |
| 24 years | 60% | $19,166 | $15,333 | $479,000 (approx) | $1,106,000 |
| 28 years | 70% | $22,361 | $17,889 | $684,000 (approx) | $1,313,000 |
| 30 years | 75% | $23,958 | $19,167 | $823,000 (approx) | $1,465,000 |
BRS's compounding advantage accelerates with longer service.
Tax Efficiency: High-36 vs. BRS
High-36 is 100% taxable income (pension is taxed at ordinary rates). BRS diversifies:
- Pension (40%): Taxable
- TSP (60%): If Roth, withdrawals after 59½ are tax-free
- Flexibility: Can do Roth conversions, charitable distributions, strategic Roth withdrawals to manage Medicare premiums
Example: Tax Impact at Retirement
High-36 E-7 with $2,000/month pension + $40k Social Security:
- Taxable income: $2,000 × 12 + $40k = $64,000
- Federal tax (2026): ~$8,200 (12.8% effective rate)
- After-tax: $55,800/year
BRS E-7 with $1,600/month pension + $299k TSP + $40k Social Security:
- Pension: $1,600 × 12 = $19,200
- Social Security: $40,000
- Taxable income: $59,200 (if taking no TSP withdrawals)
- Federal tax: ~$7,600 (12.8% effective rate)
- After-tax: $51,600
But if structured correctly:
- Roth convert $20k of TSP at 12% rate (same bracket) in year 1
- Taxable income: $59,200 + $20,000 conversion = $79,200
- Federal tax: ~$11,000 (13.9% effective rate on new $20k = $2,800 tax)
- Result: $20,000 roth-converted for $2,800 tax = awesome deal
- Years 2+, withdraw Roth tax-free
BRS allows tax arbitrage that High-36 doesn't.
Common Mistakes in High-36 vs. BRS Analysis
Mistake #1: Comparing Only Pension, Ignoring TSP
Many people say "High-36 is better (50% vs. 40%)" without realizing BRS includes $300k+ TSP. Pension-only comparison is misleading; total value analysis is correct.
Mistake #2: Assuming High-36 Members Have No TSP
Pre-2018 High-36 members could always contribute to TSP out-of-pocket (no match, but possible). Some did, some didn't. If a High-36 retiree has both pension + TSP, they're effectively in a better position than baseline High-36.
Mistake #3: Undervaluing TSP Portability
A junior service member (year 5) might think "I don't know if I'll stay to 20." With BRS, there's $100k+ in TSP already—real portable wealth. With High-36, there's $0. This should heavily influence the stay/separate decision.
Mistake #4: Ignoring Survivor Benefit Plan (SBP) Costs
High-36 members often elect SBP (6.5% of pension deduction). BRS members have TSP death benefits (cheaper/better). If you include SBP cost, High-36's pension advantage shrinks.
Mistake #5: Not Projecting Forward to Understand Inflation
A $15,972 High-36 pension in 2026 is great. But at 2.5% inflation, it's worth $11,200 in 2050 dollars (assuming no COLA adjustment, though military pensions usually get them). Don't assume 2026 dollar values remain constant 40 years out.
Step-by-Step Checklist: Analyze Your Retirement System
- Confirm whether you're High-36 (joined pre-1/1/2018) or BRS (joined after)
- Calculate your projected military pension at 20 years using your current rank and years of service
- For BRS members: model TSP balance at 20 years with 5% automatic + 4% matching contributions
- Use retirement-calculator to model both pension and TSP as income sources
- Calculate total lifetime value (pension value × life expectancy) + TSP balance
- If considering staying past 20 years, model 24, 26, 28, 30-year scenarios
- For BRS members, plan Roth vs. Traditional TSP contributions for tax diversification
- Compare SBP costs (High-36) vs. TSP death benefits (BRS) for family protection
- Determine post-military income expectations (affects tax planning)
- Use retirement-income-gap to verify retirement sustainability
FAQ
Q: Can a Pre-2018 High-36 Member Switch to BRS?
A: Only during the grandfathering window (now closed). Any pre-2018 service member who didn't elect BRS in 2019 is locked in High-36.
Q: If I'm BRS and Separate Before Vesting the Match (Year 1), What Happens?
A: You keep your 5% automatic contributions immediately (vested at day one). You forfeit the government match. At year 1.5 separation, you have ~$7,500 in TSP portable wealth.
Q: Does High-36 Pension Increase if I Earn More in My Final 36 Months?
A: Yes. If you promote from E-5 ($2,662/month) to E-6 ($2,982/month) in your final year, your "high-36 months" average includes the higher rate. Each promotion increases your High-36 calculation.
Q: Which Retirement System Is Better for Reserve/Guard Members?
A: Both exist in reserve (High-36 for pre-2018 joiners; BRS for post-2018). Reserve/Guard accumulate "points" rather than continuous service, so 20-year thresholds are different (2,080 points ≈ 1 year active). The advantage/disadvantage comparison remains similar, but timelines are longer.
Q: If I Die Before Age 65, Does My Spouse Get High-36 Pension or BRS TSP?
A: Both, potentially. High-36 pension continues to spouse only if SBP was elected. BRS TSP passes to designated beneficiary (regardless of SBP). Combined, BRS + SBP provides better survivor protection than High-36 alone.
Your Next Steps
If you're High-36, you're locked in—optimize around your 20-year pension by staying to ensure full vesting. If you're BRS, focus on maximizing TSP contributions (at least 4% to capture match) and strategically allocating between Roth and Traditional based on your projected retirement tax bracket. Use our retirement-calculator to model your specific scenario: projected military pension + TSP balance + Social Security + post-military income. Compare the total retirement value holistically, not just pension-to-pension. BRS's flexibility is an advantage only if you take intentional action—passive BRS investing in the default G Fund is suboptimal; intentional BRS Roth/Traditional allocation + lifecycle fund selection makes it far superior to High-36.