Retiring Before Medicare? A Federal Employee's FEHB Healthcare Planning Checklist

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Retiring before Medicare means leaving federal service at any age under 65 while relying primarily on your Federal Employees Health Benefits (FEHB) coverage until Medicare eligibility begins. If you retire at your Minimum Retirement Age (MRA) of 57, that gap can stretch eight years.

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During that window, FEHB isn't a supplement to Medicare. It's the primary or sole health coverage for many federal retirees, and you have to plan for it as a standalone, multi-year expense.

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The good news is that FEHB can follow you into retirement for life if you meet the eligibility rules. The challenge is affording it and picking the right plan for a stretch of years when no federal or Medicare coordination softens the cost.

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This checklist walks you through every decision that matters when retirement arrives before age 65: qualifying to keep FEHB, budgeting for rising premiums, bridging income with the FERS supplement, and preparing for the Medicare decision that lands the moment you turn 65.

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What Retiring Before Medicare Means for a Federal Employee

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Retiring before Medicare describes the period between your federal retirement date and your 65th birthday, when Medicare eligibility generally begins. During this stretch, FEHB is the primary or sole health coverage for many federal retirees.

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Medicare eligibility generally begins at age 65. If you retire earlier, you must fund and manage your own health coverage through FEHB for every year in between.

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The size of this gap depends entirely on when you leave. If you retire at the FERS (Federal Employees Retirement System) Minimum Retirement Age of 57, you face roughly eight years before Medicare. According to FedSmith, someone retiring at 57 may still be eight years away from Medicare eligibility, which makes a long-term healthcare strategy essential rather than optional.

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Retire at 62 instead, and you face a three-year gap. Either way, the planning principle is the same. Treat FEHB as a fixed, rising, multi-year cost and build it into your retirement income plan before you set a date.

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Checklist Phase 1: Qualify to Keep FEHB in Retirement

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Keeping FEHB in retirement isn't automatic. You generally must meet two eligibility rules, though the U.S. Office of Personnel Management (OPM), the agency that administers federal benefits, can waive the five-year rule in limited exceptional circumstances. Confirm both before you commit to a retirement date.

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Here are the requirements to carry FEHB into retirement:

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1. You must qualify for an immediate annuity. Generally, your FERS or CSRS (Civil Service Retirement System) annuity must begin within 30 days of separation to continue FEHB. A special rule applies to FERS MRA+10 retirees who postpone their annuity to reduce or avoid the age reduction. Their FEHB coverage is suspended after separation and may be reinstated when the postponed annuity begins, provided they meet the other continuation requirements.
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2. You must satisfy the five-year rule. According to OPM, you must have been continuously enrolled in FEHB, or covered as a family member, for the five years of service immediately before your annuity starts, or since your first opportunity to enroll if that period is shorter. Time covered under TRICARE counts toward this requirement, provided you're enrolled in an FEHB plan on your retirement date.
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A critical warning applies to anyone considering a deferred retirement. Because keeping FEHB requires eligibility for an immediate annuity, an employee who separates without that eligibility and later collects a true deferred annuity permanently loses FEHB.

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This differs from a postponed FERS MRA+10 annuity. Someone already eligible for an immediate (reduced) annuity who postpones the start date only has FEHB suspended, not lost, and can reinstate it when the postponed annuity begins.

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According to OPM, the agency can waive the five-year requirement only in limited circumstances where denying coverage would be against equity and good conscience. Never plan around receiving one.

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If early retirement is your goal, protect your eligibility for an immediate annuity, including the postponed MRA+10 path, rather than defaulting into a deferred annuity that forfeits your health coverage.

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Action items for Phase 1:

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• Confirm your retirement qualifies as an immediate annuity, not a deferred one.
• Count backward five years from your planned retirement date and verify continuous FEHB enrollment.
• If you switched plans during those five years, confirm you were never uncovered. Switching plans is fine, but a gap in coverage is not.
• If you're within five years of your target date and not yet enrolled, enroll during the next Open Season.
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Checklist Phase 2: Budget for FEHB Premiums Before Medicare

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FEHB premiums can be one of the largest recurring healthcare costs you carry before Medicare, and they rise every year. Building an accurate multi-year estimate, not a single-year snapshot, is the most important number in your pre-Medicare plan.

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Here's the reality of the cost. According to OPM, the average FEHB enrollee premium share rose 12.3% for 2026, while overall average premiums rose 10.2%.

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The government continues to pay a large share in retirement. According to OPM, the government pays the same premium share for annuitants as for active employees, generally around 70 percent of the total premium, up to a statutory cap, with the retiree covering the rest.

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But your share still adds up quickly over a multi-year gap. As an illustration, MyFederalRetirement notes that the Blue Cross Blue Shield Standard Self and Family option carried a 2026 enrollee premium of $991.60 per month.

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The planning mistake to avoid is multiplying today's premium by the number of years to Medicare. That understates the true cost, because premiums climb annually. MyFederalRetirement recommends calculating the premium year by year, applying an assumed annual increase, to capture the compounding effect and produce a realistic total.

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Action items for Phase 2:

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• Pull your current plan's retiree premium from OPM's FEHB premium page.
• Project the premium forward year by year to age 65, using a reasonable assumed annual increase and testing multiple scenarios.
• Compare that cumulative total against your FERS annuity and TSP (Thrift Savings Plan, the federal government's tax-advantaged retirement savings program) withdrawal plan.
• Re-run the projection each Open Season, since the actual increase will differ from your estimate.
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Checklist Phase 3: Choose the Right FEHB Plan for the Gap Years

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The plan you carried while working may not be the right plan for retirement. Many federal employees choose a plan out of habit and never reassess.

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During the pre-Medicare years, when FEHB is your primary or sole coverage, plan selection deserves a deliberate review.

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FEHB offers several plan structures, and the trade-offs matter more when you have no Medicare coordination to fall back on. The table below compares the two decisions that most affect pre-Medicare retirees: plan type and coverage tier.

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According to Federal Retirement, Blue Cross Blue Shield fee-for-service coverage is among the most widely accepted nationwide, offering maximum flexibility for retirees who travel, generally at a higher premium. The right answer depends on your health needs, where you live, and whether you plan to relocate.

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Action items for Phase 3:

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• Review your plan's brochure for the coming year. Benefits and networks change annually.
• Match your plan type to your lifestyle: FFS/PPO if you travel or want provider freedom, HMO if you're settled and cost-focused.
• Reassess your coverage tier (self only, self plus one, self and family) as children age off at 26.
• Use Open Season each year to review your plan and make changes if a better option exists.
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Checklist Phase 4: Bridge Your Income Until Medicare and Social Security

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Health coverage is only half the pre-Medicare equation. You also need income to pay those premiums during years when Social Security hasn't yet begun. Federal retirement offers two bridging tools.

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The first is the FERS Retirement Supplement, sometimes called the Special Retirement Supplement. This benefit approximates the Social Security portion of your FERS service and bridges the gap between early retirement and age 62.

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According to OPM, the supplement stops at the end of the month before you turn 62, whether or not you file for Social Security. It generally goes to employees who retire with an immediate, unreduced annuity before age 62, such as those retiring at MRA with 30 years of service or at age 60 with 20 years.

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Be careful about working while collecting it. According to the Social Security Administration (SSA), the 2026 annual earnings limit is $24,480. According to OPM, the supplement is then reduced by $1 for every $2 of earned income above that threshold.

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Only wages and self-employment income count. Your FERS pension, TSP withdrawals, and investment income do not.

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The second tool is your TSP. According to the IRS, the so-called "rule of 55" is an exception to the 10% additional tax on early distributions. It lets employees who separate from service in the calendar year they turn 55 or later take TSP withdrawals without the penalty.

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This can fund FEHB premiums in the gap years without a tax penalty. Because TSP withdrawals aren't earned income, they don't reduce your FERS supplement.

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Action items for Phase 4:

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• Confirm whether you qualify for the FERS supplement and estimate the monthly amount.
• If you plan to work part-time, model earnings against the $24,480 limit to avoid a reduction in your FERS annuity supplement.
• Draw bridge income from TSP or investments rather than wages if preserving the full supplement matters.
• Verify your TSP separation year qualifies for penalty-free access under the rule of 55.
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Checklist Phase 5: Prepare Now for the Medicare Decision at 65

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The pre-Medicare years end with a decision that deserves early preparation: whether to add Medicare Part B to your FEHB when you turn 65. You aren't required to enroll in Medicare to keep FEHB.

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According to OPM, FEHB coverage continues whether or not you enroll in Medicare at 65, which is why the decision confuses many retirees.

Here are the current figures to plan around. According to the Centers for Medicare & Medicaid Services (CMS), the standard 2026 Medicare Part B premium is $202.90 per month.

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Higher-income retirees pay an Income-Related Monthly Adjustment Amount (IRMAA). According to CMS, the 2026 surcharge applies when 2024 modified adjusted gross income exceeds $109,000 for single filers or $218,000 for joint filers.

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When you carry both FEHB and Part B, Medicare pays first and FEHB pays second, which, according to Fed Pilot, leaves many retirees paying very little out of pocket for most services.

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One rule isn't optional for postal retirees. According to OPM, under the Postal Service Reform Act of 2022, certain Medicare-eligible postal annuitants must enroll in Part B to keep coverage through the Postal Service Health Benefits (PSHB) Program, which began in 2025. OPM lists several exceptions, including postal annuitants who retired on or before January 1, 2025, and were not already enrolled in Part B.

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Action items for Phase 5:

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• Decide in advance whether Part B's premium is worth the reduced out-of-pocket costs for your expected healthcare use.
• If you're a postal retiree, confirm the Part B requirement applies to you.
• Consider taking premium-free Part A at 65. OPM recommends it if you owe no premium.
• Revisit your FEHB plan choice at 65, since some plans coordinate better with Medicare than others.
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FEHB Before Medicare vs. FEHB With Medicare: A Side-by-Side Comparison

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The table below summarizes how your coverage picture changes at age 65, so you can see what the pre-Medicare years are bridging toward.

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Plan Your Pre-Medicare Years With Confidence

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Retiring before Medicare is achievable, but it rewards early, deliberate planning. Qualify to keep FEHB by meeting the five-year rule and retiring on an immediate annuity, budget your premiums year by year rather than as a flat estimate, choose a plan built for the gap years, and line up bridge income from the FERS supplement and your TSP. Then prepare for the Part B decision that arrives at 65.

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Federal Employee Advisor Network, a retirement planning firm specializing in federal employee benefits, helps federal employees model exactly these decisions, mapping FEHB costs, the FERS supplement earnings test, and Medicare coordination against a personal retirement timeline.

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If you're weighing an early retirement date, connect with the Federal Employee Advisor Network to build a pre-Medicare healthcare plan before you commit. Working with a firm that specializes in federal employee benefits turns a confusing multi-year gap into a clear, funded strategy.

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Frequently Asked Questions

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1. Can I keep my FEHB if I retire before 65?

Yes. According to OPM, you can keep FEHB into retirement at any age if you retire on an immediate annuity and were enrolled in FEHB for the five years immediately before retiring. FEHB then serves as primary or sole coverage for many retirees until Medicare eligibility begins at 65.

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2. How long can I stay on FEHB before Medicare?

You can stay on FEHB for as many years as you can from age 65. According to FedSmith, a federal employee retiring at 57 may face roughly eight years before Medicare eligibility. FEHB continues for life once you qualify, so it covers the entire pre-Medicare gap and beyond, with no time limit on coverage.

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3. How much does FEHB cost in retirement before Medicare?

Your cost is your share of the premium, which rises annually. According to OPM, the government pays annuitants the same premium share as active employees, generally around 70 percent, up to a statutory cap, leaving you the rest. According to OPM, the average enrollee premium share rose 12.3% for 2026, so budget year by year.

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4. Do I have to enroll in Medicare at 65 if I have FEHB?

No. According to OPM, there's no Medicare Part B enrollment requirement in the FEHB Program, so you aren't required to enroll in Medicare to keep FEHB after age 65. Enrollment in Part B is optional for most federal retirees. Most Medicare-eligible postal retirees, however, must enroll in Part B under PSHB rules.

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5. What income can I use to pay for FEHB before Social Security starts?

Two bridges are common. The FERS Retirement Supplement approximates your Social Security amount until age 62, according to OPM. You can also draw from your TSP. According to the IRS, separating in the year you turn 55 or later allows penalty-free withdrawals. Neither TSP withdrawals nor your pension reduces the supplement.

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Disclaimer

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This article is for educational purposes only and does not constitute financial, tax, legal, investment, or federal benefits advice. Federal retirement, FEHB, Medicare, TSP, and related rules can change and may apply differently based on individual circumstances. Verify current information with OPM, TSP, SSA, CMS, and your agency benefits office before making retirement or healthcare decisions. 

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