In 2018, thousands of service members opted into the Blended Retirement System. Eight years later, the first of them are hitting 20 years of service and retiring. For the first time in military history, retirees are being asked a question no one before them had to answer: take a lump sum, or keep the full pension?
This isn't a small decision. Choosing the 50% lump sum can reduce your total lifetime retirement pay by more than $500,000. Choosing the annuity means walking away from a six-figure check at a time when you might really want the cash. Both paths carry real trade-offs, and you can't undo either one.
Here's the math so you can decide for yourself.
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What the BRS Lump Sum Actually Is
Under the Blended Retirement System, retirees with 20+ years of service can elect to receive a portion of their future pension as a one-time cash payment. You pick either 25% or 50%. In exchange, your monthly pension check shrinks until you hit age 67 (your Social Security full retirement age). At 67, your pension goes back to the full amount.
The key word is "future." DoD calculates what your pension payments would total from your retirement date through age 67, discounts that number to present value, and hands you 25% or 50% of the result. The remaining monthly payments are reduced by the same percentage.
Why 2026 matters: BRS enrollment opened January 1, 2018. To opt in, you needed fewer than 12 years of service. The earliest those opt-in members can hit 20 years and retire is 2026. This is the first class of BRS retirees facing the lump sum question.
How the 25% and 50% Options Work
The BRS pension formula is 2.0% x years of service x High-3 average base pay. At 20 years, that's 40% of your High-3 (compared to 50% under the legacy High-3 system).
If you take the lump sum:
- 25% option: You get 25% of the discounted present value of your pension through age 67. Your monthly check drops to 75% of the full amount until age 67.
- 50% option: You get 50% of the discounted present value. Your monthly check drops to 50% of the full amount until age 67.
- At age 67: Your monthly pension returns to 100% of the full amount, with all COLA adjustments that accumulated during the reduced period.
You can take the lump sum as a single payment or split it into four equal annual installments.
The Discount Rate: DoD's Built-In Haircut
The lump sum is not simply "25% of your total pension payments through age 67." DoD discounts the future payments to present value using a formula tied to Treasury bond rates. The 2026 lump sum discount rate is approximately 6.5%.
That rate comes from a specific formula: the 7-year average of the Treasury High-Quality Market (HQM) Corporate Bond Spot Rate at 23-year maturity, plus a fixed adjustment factor of 4.28%. DoD publishes the rate each June, effective the following January 1.
What 6.5% means in plain English: If your total pension payments through age 67 add up to $600,000, the discounted present value might be only $350,000. Your 50% lump sum would then be $175,000, not $300,000. The discount rate is essentially DoD's price for letting you have the money early.
To break even on the lump sum, you'd need to invest it and earn returns that consistently beat 6.5% after taxes. That's a high bar, even in strong markets. In a year where the C Fund dropped 4.98% in a single month, it's a useful reminder that markets don't always cooperate.
The Tax Hit You Can't Avoid
The lump sum is fully taxable as ordinary income in the year you receive it. Two critical details make this worse than it sounds:
- No rollover allowed. The military retirement fund is not a "qualified trust" under IRS rules. You cannot roll the lump sum into a TSP, IRA, or 401(k). The full amount hits your tax return as earned income.
- Bracket creep. A six-figure lump sum on top of any other income (terminal leave pay, a new civilian salary, your spouse's income) can push you into a much higher tax bracket. A $175,000 lump sum could easily land in the 24% or 32% federal bracket, depending on your filing status and other income.
If you take the four-installment option, you spread the tax burden across four years, but each installment is still taxable.
State taxes matter too. If you live in one of the 13 states that still partially or fully tax military retirement pay, the lump sum is taxable there as well. Check our state-by-state guide before you decide.
Real 2026 Examples: E-7 and O-5
E-7 with 20 Years (BRS)
An E-7 retiring at 20 years under the legacy High-3 system receives $2,969/month. Under BRS, the 2.0% multiplier instead of 2.5% brings that down to approximately $2,375/month ($28,500/year).
If this E-7 retires at age 40, the pension runs 27 years before the full amount restores at age 67.
| Option | Lump Sum | Monthly Pay (40-67) | Monthly Pay (67+) |
|---|---|---|---|
| Full annuity | $0 | $2,375 | $2,375 + COLA |
| 25% lump sum | ~$95,000 | $1,781 | $2,375 + COLA |
| 50% lump sum | ~$190,000 | $1,188 | $2,375 + COLA |
The 50% option gives you roughly $190,000 up front. After federal taxes (assume 22-24% bracket for most E-7 retirees), you keep about $144,000-$148,000. In exchange, you lose $1,187/month for 27 years. That's $384,000 in reduced payments before COLA adjustments. With a 2.5% average COLA, the total forfeited grows past $500,000.
O-5 with 20 Years (BRS)
An O-5 at 20 years under High-3 receives $4,594/month. Under BRS: approximately $3,675/month ($44,100/year).
If this O-5 retires at age 44, there are 23 years until age 67.
| Option | Lump Sum | Monthly Pay (44-67) | Monthly Pay (67+) |
|---|---|---|---|
| Full annuity | $0 | $3,675 | $3,675 + COLA |
| 25% lump sum | ~$137,000 | $2,756 | $3,675 + COLA |
| 50% lump sum | ~$274,000 | $1,838 | $3,675 + COLA |
The O-5 taking the 50% option receives roughly $274,000. After taxes at the 24-32% bracket, that's $186,000-$208,000. The pension reduction over 23 years totals $507,000 before COLA. After COLA, it's well over $600,000 in lost payments.
Pension amounts include projected COLA growth. Lump sum amounts shown are pre-tax. After-tax value is 20-30% lower.
Lifetime Cost of Taking the Lump Sum
The numbers above only cover the reduced-payment window (retirement to age 67). After 67, your pension returns to full, so you'd think you break even eventually. You don't.
Here's why: during the 20-27 years of reduced payments, each annual COLA is calculated on a smaller base. When your pension restores at 67, it restores to what the full pension would have been, including accumulated COLA. But you've already missed out on decades of higher payments.
| Scenario (E-7, 20 YOS) | Full Annuity | 50% Lump Sum | Difference |
|---|---|---|---|
| Lump sum received | $0 | ~$190,000 | +$190,000 |
| After-tax lump sum | $0 | ~$146,000 | +$146,000 |
| Pension income (ages 40-67) | ~$960,000 | ~$480,000 | -$480,000 |
| Net position at 67 | $960,000 | $626,000 | -$334,000 |
To make up that $334,000 gap, you'd need to invest the after-tax $146,000 and grow it to $480,000+ over 27 years. That requires a compound annual return of roughly 4.5% after taxes. Possible? Yes. Guaranteed? No. And if the market underperforms or you spend any of the lump sum (car, house, debt), the math gets worse fast.
The Few Scenarios Where a Lump Sum Makes Sense
Most financial advisors who specialize in military retirement recommend keeping the full annuity. The First Command Financial Planning analysis concluded that "it will be very difficult for any military retiree to gain more through investing the lump sum amount than they would have earned keeping the full pension."
That said, a lump sum might make sense in a few narrow situations:
- Serious health concerns. If your life expectancy is significantly shortened, you may not live long enough for the full annuity to catch up. The lump sum puts money in your hands now and can be passed to heirs.
- Specific, high-return investment opportunity. If you have a concrete plan (not a vague idea) to invest at returns consistently above 6.5% after taxes, the math can work. Be honest with yourself about whether that's realistic.
- Critical debt elimination. If you're carrying high-interest debt (credit cards at 20%+), paying it off with the lump sum could save more in interest than the pension reduction costs. But this is a sign of a deeper financial problem, not a reason to prefer the lump sum.
- Legacy planning with short horizon. If passing an asset to your children or spouse is more important than maximizing your own lifetime income, the lump sum becomes an inheritable asset. (But consider SBP for survivor income first.)
For most first-wave BRS retirees in 2026, the full annuity is the better choice. It's inflation-adjusted, government-backed, and pays out for life. You cannot outlive it. The lump sum gives you a fraction of that value up front, at a steep discount, with a tax bill on top.
What to Do Before Your 90-Day Deadline
If you're retiring under BRS in 2026, here's a practical checklist:
- Run the numbers with the DoD BRS Calculator. Enter your actual rank, years, and pay. See both lump sum amounts and the reduced monthly payments. Then use our calculator to see how your total retirement income (pension + VA disability + civilian salary) looks under each option.
- Calculate your break-even return. Take the after-tax lump sum amount. Figure out what annual return you'd need to match the total pension payments you're giving up. If it's above 5-6%, be cautious.
- Talk to a fee-only financial advisor. Not a broker who sells insurance products. A fee-only fiduciary who charges by the hour or a flat fee. The Military Financial Advisors Association has a directory.
- Factor in your VA disability. If you have a VA rating, your disability compensation is separate and unaffected by the lump sum choice. But the combination of reduced pension + VA disability + civilian income determines your real tax bracket, which affects the lump sum's after-tax value.
- Consider the four-installment option. If you do take the lump sum, spreading it over four annual payments reduces the annual tax hit. You still get the same total, just over four years.
- Make the decision at least 90 days out. DFAS requires the election 90 days before your retirement date. Don't wait until the last minute. Payment arrives within 60 days after retirement.
Model Your BRS Retirement Pay
Enter your rank, years of service, and retirement system to see your monthly pension. Compare it against the lump sum trade-off.
Try the CalculatorFrequently Asked Questions
Can I take the lump sum and still get VA disability?
Yes. VA disability compensation is completely separate from your military pension. Taking the lump sum reduces your pension payments, not your VA benefits. If you qualify for CRDP or CRSC, those calculations are based on your full retired pay, not the reduced amount.
Does the lump sum affect my SBP premiums?
SBP premiums are based on your elected base amount, not your actual reduced payments. If you take the lump sum, you'll still pay SBP premiums on the full pension amount. This means a higher percentage of your reduced check goes to SBP during the years before age 67.
What happens if I die before age 67?
Your pension stops (unless you elected SBP). The lump sum money is yours and passes to your estate. If you took the full annuity and die at 50 with no SBP, your surviving spouse gets nothing from the pension. This is one genuine argument for the lump sum if you have health concerns.
Can I change my mind after I elect the lump sum?
No. The election is permanent once made. You cannot reverse it after your retirement date.
Does the lump sum include COLA projections?
Yes. The present-value calculation includes projected COLA adjustments between your retirement date and age 67. This means anticipated inflation is already baked into the lump sum amount.
Can I roll the lump sum into an IRA or TSP?
No. The military retirement fund is not a qualified trust under IRS rules. Lump sum payments cannot be rolled over into any tax-advantaged retirement account. The full amount is taxable as ordinary income.
What if I'm a Reservist?
Reserve component members can elect the lump sum when they first become eligible for retired pay, typically at age 60. Because the window between age 60 and age 67 is only 7 years, the lump sum amount will be much smaller, and the pension reduction period is much shorter. The math is different (and often less punishing) for Reservists than for active-duty retirees who face a 20-27 year reduction.
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- Tariffs and Your TSP in 2026: A Military Member's Guide
- The Military COLA Trap 2026: How Your Retirement Date Can Cost You Thousands
- Military Retirement Taxes 2026: Complete Guide
This article is for educational purposes. Individual circumstances vary. Consult a financial advisor before making the lump sum election.