FEHB vs TRICARE for Retirees: A Complete Guide to Choosing the Right Coverage

You spent decades earning your benefits. Now retirement is here — or close — and you’re staring at a question that stumps even seasoned HR professionals: should you stick with FEHB, rely on TRICARE, or somehow use both?

It’s not a trick question, but it does have layers.

The answer depends on your service history, your age, your Medicare status, your family situation, and yes, your budget.

The good news is that both programs are genuinely strong. Unlike most Americans who retire and scramble for coverage, you have options that career civilians would envy.

This guide lays out the real differences — premiums, eligibility rules, Medicare coordination, and the moments when each plan shines — so you can make a decision that protects your health and keeps more money in your pocket.

The key? Know the rules before you act, because a few of them are one-way doors.

Article Highlights

• The 5-year rule: You must have been enrolled in FEHB for the 5 continuous years immediately before retirement to carry it into retirement.
• TRICARE for Life follows Medicare, not just age: Once you have both Medicare Part A and Part B (whether at 65 or earlier due to disability or ESRD) TRICARE for Life acts as a near-zero-premium secondary wrap-around plan.
• You can have both: Military retirees who also qualify for FEHB can legally hold both plans simultaneously, letting FEHB serve as primary and TRICARE fill gaps.
• Pre-Medicare costs differ sharply: Before Medicare eligibility, FEHB and TRICARE costs vary meaningfully by plan. OPM’s 2026 data shows a program-wide weighted average total FEHB premium of $977.28/month (Self Only), with a maximum government contribution of $703.65 — leaving an average retiree enrollee share of roughly $274/month, though individual plan shares span a wide range. Current TRICARE Select retiree monthly premiums should be confirmed at tricare.mil/Costs for a direct side-by-side comparison.
• Switching has consequences: Dropping FEHB in retirement is generally permanent — you cannot re-enroll unless you return to federal service.

FEHB vs TRICARE: Key Differences at a Glance

Before diving into details, it helps to see both programs side by side. FEHB is administered by the U.S. Office of Personnel Management (OPM) and is available to federal civilian employees and certain members of the uniformed services.

TRICARE is the Department of Defense health program serving active-duty members, retirees, and their families. For a broader look at your federal coverage landscape, see our guide to Federal Health Insurance Options for Retirees.

Quick-Reference Comparison Table

The table below captures the most decision-relevant differences at a glance. Figures marked should be confirmed against OPM’s 2026 plan finder and the official TRICARE rates page before publication.

Who Each Program Is Built For

FEHB was designed for the federal civilian workforce. If you spent your career with a federal agency — or a mix of civilian and uniformed service — FEHB is your primary vehicle.

TRICARE was built for the military community.

If you served 20 or more years on active duty (or in a qualifying reserve capacity), TRICARE retirement benefits are yours by right of service and they follow you almost anywhere in the world.

The Overlap Zone: Dual Eligibles

Some retirees qualify for both. A veteran who retired from the military and then completed a federal civilian career may hold TRICARE eligibility and also meet FEHB’s 5-year rule.

That overlap is where the most interesting planning happens. We’ll cover exactly how to use both plans together later in this guide.

FEHB Eligibility and the 5-Year Continuation Rule

Carrying FEHB into retirement isn’t automatic.

Per OPM rules, you must have been continuously enrolled in FEHB — either as a subscriber or as a family member under another federal employee’s enrollment — for the 5 consecutive years immediately before the date of your retirement.

What “Continuously Enrolled” Actually Means

This catches people off guard. If you dropped FEHB at any point during those final five years, even briefly, you may not qualify to continue it in retirement. The clock resets.

The safest move is to keep your enrollment active and review it every open season without letting it lapse.

Military Service and the 5-Year Rule

Active military service can count toward the 5-year requirement under specific circumstances. If you left federal civilian employment for uniformed service and returned, that military service period may be credited. But the rules are detailed and depend on the type of appointment you held.

Review your specific situation with your agency’s HR office well before your retirement date.

What Happens If You Miss the 5-Year Window

If you don’t meet the rule, you lose FEHB coverage at retirement. Generally, you cannot get it back without returning to federal employment. That makes this a genuine one-way door.

The silver lining: if you’re also TRICARE-eligible, you still have solid coverage. But knowing this in advance lets you plug the gap while you still can.

Cost Comparison: Premiums and Out-of-Pocket Expenses

Cost is usually the first thing retirees want to compare — and rightfully so. But the premium headline rarely tells the whole story. What matters is your total annual spend: premiums plus deductibles plus copays plus what you’d owe in a bad medical year.

FEHB Premium Reality in Retirement

The government contribution to your FEHB premium is set by statute (5 U.S.C. § 8906) as the lesser of 72% of the weighted-average premium across all plans or 75% of your chosen plan’s total premium — whichever is lower.

For lower-cost plans, enrollees receive the full 75% contribution; for high-cost plans, the effective government share can be substantially less.

Per OPM’s published 2026 premium tables, the maximum monthly government contribution is $703.65 for Self Only, $1,540.87 for Self Plus One, and $1,685.73 for Self and Family. Retirees pay their enrollee share from after-tax annuity income — meaning you lose the pre-tax premium conversion benefit you had while working — but you do not bear the full premium cost.

OPM’s 2026 data shows the program-wide weighted average total monthly premium is $977.28 for Self Only, $2,140.08 for Self Plus One, and $2,341.30 for Self and Family.

After the government contribution, most retirees pay roughly $3,600–$6,000 per year depending on their plan. Individual plan premiums vary significantly by tier and carrier, so checking OPM’s plan finder for your specific options is essential.

If you’re not yet Medicare-eligible and covered only by FEHB, pairing your plan with a Health Savings Account may not be possible — most FEHB plans are not HSA-qualified high-deductible health plans.

For a deeper look at how HSAs work as a retirement asset, see our guide to Retirement Health Savings Accounts (HSAs): A Dual Benefit.

TRICARE Premiums by Plan Type

TRICARE’s premium structure depends heavily on which plan you use. TRICARE Prime (HMO-style, requires a primary care manager) and TRICARE Select (PPO-style, more provider choice) have different rate tables. Retired reserve members access coverage through TRICARE Retired Reserve, which carries higher premiums than plans for active-duty retirees.

For retirees enrolled in both Medicare Part A and Part B, TRICARE for Life has no separate enrollment fee or monthly TRICARE premium — confirmed for 2026. You pay only the Medicare Part B premium ($202.90/month at the standard rate in 2026, per CMS) to maintain eligibility, making TRICARE for Life one of the most cost-effective secondary coverage options available anywhere.

Out-of-Pocket Scenarios: Where the Real Difference Shows

A low-premium plan can become expensive fast if your deductible is high or your cost-sharing is steep. Before choosing, model at least two scenarios: a routine year (primary care visits, one specialist, maintenance prescriptions) and a significant-care year (surgery, hospitalization, or a new chronic condition diagnosis).

As a general pattern, TRICARE for Life tends to have very low out-of-pocket exposure for Medicare-enrolled retirees because Medicare pays first and TRICARE covers most of the remainder. For pre-Medicare retirees, FEHB plans often offer richer network access but at higher total cost.

Can Military Retirees Have Both FEHB and TRICARE?

Yes. And for the right person, holding both plans is a genuinely powerful combination. This applies to retirees who completed military service qualifying them for TRICARE and also meet FEHB’s 5-year rule through a subsequent federal civilian career.

How Coordination Works When You Have Both

When you hold both FEHB and TRICARE, FEHB typically acts as primary and TRICARE acts as secondary. In practice, FEHB pays its share of a covered claim first, and TRICARE may cover some or all of the remaining cost-sharing — potentially driving your out-of-pocket to near zero on many services.

This coordination is not automatic paperwork magic. You need to present both coverage cards to providers and ensure claims are filed correctly with both programs.

Is It Worth Paying for Both?

That depends on your premium outlay versus your expected medical use. Even though FEHB retirees benefit from a substantial government contribution, the enrollee share is still a real monthly cost to weigh against the gap-filling benefit TRICARE provides.

For retirees with manageable health needs, dropping FEHB and relying solely on TRICARE — especially once TRICARE for Life kicks in — can free up significant monthly budget for other priorities: more room for travel, hobbies, or family. But remember: dropping FEHB is generally irreversible. Run the numbers carefully before you let it go.

The Spouse and Survivor Angle

Both programs extend to eligible family members, but the rules diverge after the retiree’s death.

TRICARE coverage for a surviving spouse may continue under specific conditions. FEHB coverage for a surviving spouse depends on whether the retiree elected a survivor annuity under CSRS or FERS — because FEHB in retirement is tied to receiving an annuity.

A surviving spouse who loses the annuity typically loses FEHB eligibility too. This is worth a dedicated conversation with a benefits counselor before you finalize your retirement paperwork.

How TRICARE and FEHB Coordinate With Medicare

Medicare changes everything. Once you enroll in Medicare, both FEHB and TRICARE enter a new coordination relationship. And the math often shifts dramatically in favor of TRICARE for Life.

FEHB and Medicare: A Flexible Partnership

Most FEHB plans do not require you to enroll in Medicare Part B to keep your FEHB coverage. This is a meaningful perk. Some federal retirees skip Part B — and its $202.90/month standard 2026 premium — because their FEHB plan already provides solid coverage.

That said, enrolling in both FEHB and Medicare Part B can reduce your out-of-pocket costs substantially, because the plans coordinate and each fills gaps the other leaves. Many retirees with significant or ongoing healthcare needs find the combined approach worthwhile even after paying the Part B premium.

TRICARE for Life: Medicare Is Required

TRICARE for Life is available to any TRICARE-eligible beneficiary who has both Medicare Part A and Part B, regardless of age.

While most people become Medicare-eligible at 65, those under 65 who qualify for Medicare due to disability or end-stage renal disease are also eligible for TRICARE for Life. TRICARE for Life then wraps around Medicare, covering most of what Medicare doesn’t — copays, deductibles, and many cost-sharing amounts — at no additional TRICARE premium beyond what you’re already paying for Part B.

For retirees with regular medical needs, TRICARE for Life plus Medicare is one of the most comprehensive and cost-efficient combinations available. The tradeoff is that Part B enrollment is mandatory — there’s no opting out of that premium.

Timing Your Medicare Enrollment

Whether you’re in FEHB, TRICARE, or both, missing your Medicare Initial Enrollment Period can mean permanent late-enrollment penalties on Part B premiums. Mark your 65th birthday on the calendar well in advance.

If you’re still working at 65 with active employer coverage (not retiree coverage), different rules may apply — but once you’re in retirement, the standard enrollment window governs. The Medicare.gov enrollment guide lays out the exact windows clearly.

FEHB vs TRICARE for Pre-Medicare Retirees (Under 65)

The pre-Medicare window is where the FEHB vs TRICARE decision feels most urgent — and most expensive.

You don’t yet have Medicare as a foundation, which means your chosen plan carries the full weight of your healthcare costs.

Why the Pre-Medicare Gap Deserves Extra Attention

Retiring before Medicare eligibility with a gap in coverage is a real risk. The years between retirement and Medicare eligibility can be among the most expensive healthcare years of your life. Not because you’re necessarily sicker, but because you’re bearing full cost without Medicare yet.

This is also a period when staying proactive about your health pays compound dividends. Building consistent habits — regular movement, strong nutrition, preventive screenings — during this window can reduce your medical spend over the full retirement arc.

FEHB Coverage Before Medicare

If you meet the 5-year rule, FEHB can serve as comprehensive standalone coverage before Medicare. You’ll have access to a broad network, prescription drug coverage, and predictable cost-sharing. The government also continues contributing its share of your premium, so you’re not on the hook for the full cost.

For many federal retirees, FEHB during the pre-Medicare years is the cleanest option simply because it’s familiar, the network is established, and you won’t face the disruption of switching.

TRICARE Plans Before Medicare

Military retirees who are not yet Medicare-eligible have access to TRICARE Prime or TRICARE Select depending on where they live. Both are available before Medicare eligibility, and both typically offer lower premiums than comparable FEHB plans — though network access and referral requirements differ between the two.

TRICARE for Life is not available before you have both Medicare Part A and Part B. Pre-Medicare military retirees who also hold FEHB can use the coordination approach described earlier, with FEHB primary and TRICARE secondary.

Which Plan Should You Choose? A Decision Framework

There’s no universal right answer. But there is a right process.

Good health coverage is the foundation everything else in retirement is built on. As you think through this decision, it’s worth remembering that the goal isn’t just avoiding bills; it’s protecting the energy and wellbeing that make the rest of retirement worth having.

For a broader look at that longer game, see our piece on Anti-Aging and Longevity For Your Retirement.

Here’s something worth sitting with: once your coverage is sorted and you’re confident about your healthcare costs, that peace of mind frees up real mental energy and real dollars for the things that make retirement genuinely fulfilling — whether that’s taking the trip you’ve been postponing, spending more time with grandchildren, or finally pursuing that hobby you kept sidelining.

Getting this decision right opens that space.

The Four Questions to Ask Yourself First

Work through these before you open a plan brochure:

1. Do I meet the FEHB 5-year rule? If no, your civilian coverage question is answered. Pivot fully to TRICARE or marketplace options.

2. Am I TRICARE-eligible? Twenty or more years of qualifying military service opens this door. If you have both options, you’re in the most flexible position.

3. Am I Medicare-eligible? Your Medicare status reshapes the entire cost calculation. Without Medicare, FEHB often wins on network breadth. With Medicare, TRICARE for Life plus Medicare is hard to beat on value.

4. What’s my expected healthcare use? A healthy retiree with low utilization may find TRICARE’s lower premiums compelling. A retiree managing multiple conditions may value FEHB’s broader provider choice and predictable cost-sharing.

Scenario A: Federal Civilian Retiree, No Military Service

FEHB is your primary option. The main decision is which FEHB plan to choose — not whether to have FEHB — and whether to enroll in Medicare Part B when eligible to strengthen your coverage and drive down out-of-pocket costs.

For most, the answer is yes — though the math depends on your specific plan and health profile.

Scenario B: Military Retiree With Federal Civilian Service (Dual Eligible)

You have the most flexibility — and the most to analyze.

If you’re not yet Medicare-eligible, consider using both plans in coordination. Once you have Medicare, TRICARE for Life plus Medicare may be so comprehensive that paying your FEHB enrollee share no longer makes financial sense.

Model the numbers. If you drop FEHB, do it with eyes open. It’s not a door you can reopen later.

Switching Plans or Dropping Coverage: What You Need to Know

Decisions made at retirement about your health coverage can echo for decades. Understanding when you can change course (and when you can’t) is essential.

FEHB Open Season in Retirement

Retired federal employees can change their FEHB plan during the annual Federal Benefits Open Season, which typically runs in November–December each year. You can switch plans, change enrollment types (self-only to self-plus-one, for example), or adjust coverage.

What you generally cannot do is re-enroll if you’ve previously dropped FEHB in retirement.

Dropping FEHB: A Decision You Usually Can’t Undo

This bears repeating because the consequences are permanent for most retirees. Once you voluntarily cancel FEHB enrollment during retirement, you cannot re-enroll — period — unless you return to active federal service and complete a new qualifying period.

If you’re considering dropping FEHB to save on your enrollee-share premiums, make sure TRICARE for Life or another coverage source will genuinely meet your needs first.

TRICARE Plan Changes

TRICARE has its own enrollment and disenrollment periods.

Retirees can generally switch between TRICARE plans during designated open enrollment periods or after qualifying life events. Moving to a new area or changes in Medicare status can also trigger an opportunity to adjust your TRICARE plan.

Check the official TRICARE enrollment page or contact a TRICARE regional contractor for the current schedule.

Common Mistakes to Avoid

Benefits decisions at this level of complexity reward preparation and punish assumptions. Staying mentally sharp enough to navigate these systems is itself a health goal worth pursuing. Our guide on Maintaining Cognitive Health in Seniors offers practical strategies for keeping your decision-making edge well into retirement.

Here are the most common missteps retirees make when navigating FEHB and TRICARE.

Assuming You Automatically Qualify for FEHB

Many federal employees assume their decades of service guarantee FEHB in retirement. It doesn’t. Only the 5 consecutive years immediately before retirement count.

A gap — even one caused by moving to a different plan type — can disqualify you. Verify your enrollment history with your agency HR office at least a year before you plan to retire.

Dropping FEHB Without a Backup Plan

The enrollee-share premiums are real, and the temptation to drop coverage that feels redundant is understandable. But dropping FEHB without confirmed, comprehensive alternative coverage is one of the costliest mistakes a retiree can make.

Model the worst-case medical year before you cancel anything.

Missing Medicare Enrollment Deadlines

Whether you’re primarily FEHB or TRICARE, Medicare timing matters. A late Part B enrollment triggers a 10% premium penalty for each 12-month period you delayed, per CMS rules — and that penalty is permanent, added to your Part B premium for life.

Set reminders well before your 65th birthday and confirm the enrollment window with your plan administrator.

Your Next Step

Both FEHB and TRICARE are genuinely excellent programs.

You’ve earned them through years of service, and they can protect your health across decades of retirement.

The decision between them (or the decision to use both) comes down to your unique combination of service history, age, Medicare status, family situation, and how much you’re willing to pay in enrollee-share premiums for expanded flexibility.

Start with the four questions in the decision framework above. Pull your FEHB enrollment history from your HR office. Confirm your TRICARE eligibility through the Defense Manpower Data Center. Then model your costs in a routine year and a high-need year before you commit to any changes.

You’ve put in the work. Now make sure the coverage you carry into retirement is working just as hard for you.

Take action now: Review your FEHB enrollment history and TRICARE eligibility at least 12 months before your planned retirement date — then use the four-question framework in this guide to map your path forward.

Frequently Asked Questions

Is it worth keeping FEHB in retirement?

For most federal retirees without TRICARE eligibility, yes — FEHB provides comprehensive coverage and broad network access that’s hard to replicate elsewhere. The government contribution is set as the lesser of 72% of the weighted-average premium or 75% of your chosen plan’s premium, meaning your enrollee share is meaningful but not the full cost. Compare your total annual spend (enrollee-share premiums plus expected out-of-pocket) against your alternatives before deciding. If you’re also TRICARE-eligible and Medicare-enrolled, TRICARE for Life plus Medicare may cover your needs at lower total cost.

Can I keep FEHB after military retirement?

Yes, if you completed a federal civilian career after your military service and met the 5-year continuous enrollment rule immediately before retiring from that civilian position. Military service alone does not provide FEHB eligibility. It must be paired with qualifying federal civilian employment and enrollment. Confirm your specific history with your agency HR office before your retirement date.

Is TRICARE better than Federal Blue Cross Blue Shield?

It depends on your situation. TRICARE for Life (for retirees enrolled in Medicare) typically offers very low out-of-pocket costs and is hard to beat on overall value. Federal Blue Cross Blue Shield — one of the most popular FEHB options — generally offers a broader provider network and more flexibility in choosing specialists without referrals. For pre-Medicare retirees, the better choice often comes down to whether you prioritize lower premiums (often TRICARE) or wider provider access (often FEHB).

Does TRICARE cover more than FEHB?

Not categorically. Both programs offer comprehensive coverage, but their structures differ. TRICARE for Life, layered on top of Medicare, effectively covers most remaining costs Medicare doesn’t pay, making it exceptionally thorough for Medicare-enrolled retirees. FEHB plans often cover more provider types and may have stronger mental health or specialty care benefits depending on the specific plan chosen. Comparing the Summary of Benefits for your specific FEHB plan against your TRICARE option gives the clearest picture.