How Military Retirement Pay Works: A No-Nonsense Breakdown
Military retirement pay has gotten complicated with all the changes and new systems flying around over the past few years. As someone who’s spent a long time studying military compensation inside and out, I learned everything there is to know about both the legacy High-3 system and the Blended Retirement System. And I’ll be honest — getting this stuff right matters more than almost any other financial decision you’ll make in uniform.
At its core, military retirement pay gives you a monthly pension if you complete at least 20 years of service. That’s the baseline. But how much you get depends on which retirement system you’re under, your highest 36 months of basic pay, and exactly how long you served. Let me walk you through all of it.
The Three Factors That Determine Your Pension
Your military retirement pay comes down to three things:
- Your retirement system (High-3 or BRS) — and this one’s a big deal
- Your “High-3” average (the average of your highest 36 months of basic pay)
- Your years of creditable service
High-3 Retirement System — The Legacy Plan
If you entered service before January 1, 2018 and didn’t opt into BRS, you’re under the legacy High-3 system. And frankly, a lot of people think it’s the better deal if you’re staying for 20+.
The High-3 Formula
Monthly Retirement Pay = High-3 Average x 2.5% x Years of Service
That’s what makes the High-3 endearing to us military finance folks — it’s simple and generous. 2.5% per year means you hit 50% of your High-3 at exactly 20 years. Stay longer and it keeps climbing.
What the Numbers Actually Look Like
| Years of Service | Multiplier | High-3 of $6,000 | High-3 of $8,000 | High-3 of $10,000 |
|---|---|---|---|---|
| 20 years | 50% | $3,000/mo | $4,000/mo | $5,000/mo |
| 24 years | 60% | $3,600/mo | $4,800/mo | $6,000/mo |
| 26 years | 65% | $3,900/mo | $5,200/mo | $6,500/mo |
| 30 years | 75% | $4,500/mo | $6,000/mo | $7,500/mo |
Blended Retirement System (BRS) — The New Way
If you came in on or after January 1, 2018, or you opted in during the switch window, you’re on the Blended Retirement System. It works differently, and honestly, it’s a better deal for some people and worse for others.
The BRS Formula
Monthly Retirement Pay = High-3 Average x 2.0% x Years of Service
Plus: Government matching contributions to your TSP (up to 5% of basic pay)
So you’re getting a smaller pension, but the TSP match is the trade-off. For folks who might not stay 20 years, the BRS is actually a much better setup because you keep those TSP contributions regardless.
BRS Numbers Side by Side
| Years of Service | Multiplier | High-3 of $6,000 | High-3 of $8,000 | High-3 of $10,000 |
|---|---|---|---|---|
| 20 years | 40% | $2,400/mo | $3,200/mo | $4,000/mo |
| 24 years | 48% | $2,880/mo | $3,840/mo | $4,800/mo |
| 26 years | 52% | $3,120/mo | $4,160/mo | $5,200/mo |
| 30 years | 60% | $3,600/mo | $4,800/mo | $6,000/mo |
BRS Continuation Pay — The Midcareer Bonus
BRS members get a lump-sum continuation pay bonus at the 12-year mark (sometimes between 8-12 years depending on your service):
- Active Duty: 2.5x to 13x monthly basic pay — that’s a potentially massive bonus
- Reserve/Guard: 0.5x to 6x monthly basic pay
- You’ll need to commit to additional service to get it
Calculating Your High-3 Average
Probably should have led with this section, honestly, because this number drives your entire pension calculation. Your “High-3” is the average of your highest 36 consecutive months of basic pay. For most people, this is simply their last 3 years of service.
What Counts (and What Doesn’t)
- Included: Basic pay only — that’s it
- NOT included: BAH, BAS, special pays, bonuses, COLA. I know, it’s frustrating. But those don’t factor in.
Example: How an E-7 Calculates Their High-3
An E-7 retiring with these final 36 months:
- Months 1-12: $4,500/month basic pay
- Months 13-24: $4,650/month basic pay
- Months 25-36: $4,800/month basic pay
High-3 Average: ($4,500 + $4,650 + $4,800) / 3 = $4,650
That $4,650 then gets plugged into your retirement formula. Simple in concept, but it pays to understand it so you can plan promotions and career moves strategically.
COLA Adjustments — Keeping Up with Inflation
Your retirement pay doesn’t stay static. It gets annual Cost-of-Living Adjustments (COLA) based on the Consumer Price Index:
- High-3 retirees: Full COLA adjustment, every year. This is a big deal over decades.
- BRS retirees: COLA minus 1% until age 62, then it gets recomputed to full COLA. The 1% reduction is one of the trade-offs of BRS that doesn’t get talked about enough.
Disability Retirement — A Different Calculation
Service members who are medically retired with a disability rating have different math:
- Less than 20 years: Disability percentage x High-3 (minimum 30%)
- 20+ years: You get the higher of the disability calculation or longevity calculation
- Combat-related: May qualify for Combat-Related Special Compensation (CRSC), which is a whole other topic worth understanding
Reserve/Guard Retirement — The Points Game
Reserve and National Guard members earn retirement points rather than straight years of service:
- You need a minimum of 20 “good years” (50+ points each)
- Retirement pay starts at age 60 (earlier if you have mobilized service)
- Formula: (Total Points / 360) x 2.5% (High-3) or 2.0% (BRS) x High-3 Average
It’s a bit more complex than active duty retirement, but the end result is still a monthly pension — just delayed a bit.
Taxes on Military Retirement Pay
Your military retirement pay is generally taxable at the federal level, but a lot of states give retirees a break:
- Fully exempt states: Alabama, Hawaii, Illinois, Iowa, Kansas, Louisiana, Massachusetts, Michigan, Mississippi, Missouri (partial), New Jersey, New York, Ohio, Pennsylvania, Wisconsin
- No income tax at all: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming
Where you retire matters. A lot. I’ve seen people save tens of thousands over retirement by choosing a tax-friendly state. It’s worth factoring into your planning.
Survivor Benefit Plan (SBP) — Protecting Your Family
The Survivor Benefit Plan provides continued income to your spouse or dependents after your death. Here’s what you need to know:
- Costs approximately 6.5% of your retirement pay
- Provides 55% of your retirement pay to survivors
- Decision must be made at retirement — and it’s irrevocable after 2 years
I know 6.5% feels like a lot coming off the top, but if something happens to you, your spouse will be grateful for that 55% monthly payment. It’s insurance, plain and simple.
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