Federal Retiree Health Insurance: FEHB and Medicare Made Simple

This content is sponsored by FEBA.

Why This Matters

If you’re a federal employee planning for retirement—or already retired—you’ve got some important decisions to make about your health insurance. The rules around FEHB (Federal Employees Health Benefits) and Medicare have changed recently, especially for Postal Service retirees. Understanding how these two programs work together can save you money and give you better coverage.

Let’s break it all down in plain English.

Keeping Your FEHB Coverage When You Retire

The Basic Rules

You can keep your FEHB plan in retirement if you check both of these boxes:

You’re eligible for an immediate annuity (that’s your retirement paycheck)
You’ve been enrolled in FEHB for at least 5 years in a row right before retiring
(Or since your very first chance to enroll, if that’s less than 5 years)

‍‍‍ Good News for Your Family

Your spouse, dependent kids, and eligible disabled children can stay on your plan without meeting the 5-year rule themselves.

What Changes When You Retire

While Working	After Retirement
Premiums come out pre-tax	Premiums come out after-tax
Government pays ~70-75% of the premium	Government still pays ~70-75% (up to the legal cap)
Paid from your paycheck	Deducted monthly from your annuity

Special Rules for Postal Retirees

IMPORTANT CALL OUT

If you’re a Postal Service retiree, pay close attention!

Under the Postal Service Reform Act of 2022, most Medicare-eligible postal retirees must enroll in Medicare Part B to keep their FEHB coverage through the new Postal Service Health Benefits (PSHB) Program (started in 2025).

There are only limited exceptions. If this applies to you, review your specific situation carefully.

Medicare 101: The Four Parts

Medicare usually kicks in at age 65. For most federal retirees, signing up is optional but highly recommended—except for those postal retirees mentioned above.

The Four Parts Explained Simply

Part	Name	What It Covers	Cost
Part A	Hospital Insurance	Inpatient hospital stays	Free for most people (if you worked enough years)
Part B	Medical Insurance	Doctor visits, outpatient care, preventive services	Monthly premium (higher if your income is higher — called IRMAA)
Part C	Medicare Advantage	Private plans combining A + B + often extra benefits	Must have A & B first; costs vary by plan
Part D	Prescription Drugs	Medication coverage	Optional; many FEHB plans already have creditable drug coverage

When to Sign Up (And What Happens If You Don’t)

The General Rule

While you’re working and have FEHB → That counts as "employer coverage"
After you retire → Medicare becomes primary (pays first), FEHB becomes secondary (pays second) — but only if you enroll in Medicare

The Late Enrollment Penalty

If you delay Part B when first eligible and don’t have qualifying employer coverage, you’ll face a permanent penalty — 10% higher premium for every 12 months you waited. This lasts forever.

FEHB: Cancel or Suspend?

If you have Medicare, Medicaid, or TRICARE, you have two choices for your FEHB plan:

Canceling FEHB

Permanent — you generally can never re-enroll
This is a one-way door. Think very carefully.

Suspending FEHB (Usually the Better Choice)

Temporary pause — you can come back later!
Allowed if you enroll in:
- A Medicare Advantage plan (Part C)
- Medicaid
- TRICARE for Life
You can rejoin FEHB during Open Season or after certain life events

Pro Tip: Suspension keeps your options open. Cancellation closes the door forever.

Three Smart Strategies for Combining FEHB + Medicare

There’s no single "right" answer — it depends on your situation. Here are the three most common approaches:

1 Keep FEHB + Enroll Only in Medicare Part A

Part A is free → no downside to enrolling at 65
FEHB stays your primary coverage
Great for: People who travel internationally (Medicare doesn’t cover care outside the U.S.)
Risk: If you later add Part B, you’ll pay lifetime penalties (10% per year of delay)

2 Enroll in Parts A & B + Keep FEHB

Medicare = primary, FEHB = secondary
FEHB often covers most or all remaining costs (copays, deductibles)
Many switch to a lower-cost FEHB plan to save on premiums
Most Basic FEHB plans offer rebates to help pay for Part B
Highest monthly cost — but best protection against big medical bills

3 Suspend FEHB + Enroll in Medicare Advantage (Part C)

Must have Parts A & B first
Many Advantage plans have $0 extra premium beyond Part B
Suspend (don’t cancel!) FEHB → keeps your right to return later
Lowest monthly cost (unless hit by IRMAA)
Trade-off: You may face higher out-of-pocket costs when you actually need care (copays, networks, etc.)

How to Choose: Key Factors to Consider

Factor	Why It Matters
Your income	Higher income = IRMAA surcharges on Part B & D
Health status	More health needs = more value in comprehensive coverage
Travel plans	International travel? FEHB covers you; Medicare doesn’t
Prescription drugs	Check if your meds are covered under each option
Postal vs. non-postal	Postal retirees have mandatory Part B rules

Do this every year: Review your coverage during Open Season. Premiums, plans, and your health needs change!

Summary: Your Action Checklist

Confirm your FEHB eligibility (5-year rule + immediate annuity)
Check if you’re a Postal retiree — mandatory Part B rules may apply
Enroll in Medicare Part A at 65 (it’s free!)
Decide on Part B — weigh monthly cost vs. lifetime penalties vs. coverage needs
Choose a strategy: Keep FEHB + A only | Keep FEHB + A&B | Suspend FEHB + Advantage
Never cancel FEHB unless you’re 100% sure — suspend instead
Review annually during Open Season

FAQ: Your Top Questions Answered

Q1: Do I HAVE to sign up for Medicare at 65?

A: For most federal retirees — no, it’s optional. But if you’re a Medicare-eligible Postal retiree, you must enroll in Part B to keep PSHB coverage. For everyone else, delaying Part B without employer coverage means permanent penalties.

Q2: What’s the difference between canceling and suspending FEHB?

A: Canceling is permanent — you can almost never get it back. Suspending is temporary — you can re-enroll during Open Season or after qualifying life events. Always suspend if you might want FEHB later.

Q3: Does Medicare cover me when I travel outside the U.S.?

A: Generally, no. Original Medicare (Parts A & B) doesn’t cover care outside the U.S. (except rare emergencies). FEHB plans often do. If you travel internationally, keeping FEHB as primary (Strategy 1) is a big advantage.

Q4: What is IRMAA and do I have to pay it?

A: IRMAA (Income-Related Monthly Adjustment Amount) is an extra charge on your Part B and Part D premiums if your income is above certain thresholds. It’s based on your tax return from 2 years ago. If your income drops (like in retirement), you can appeal.

Q5: Can I switch strategies later if my needs change?

A: Yes — if you suspended FEHB. You can re-enroll during Open Season. If you canceled FEHB, you’re likely stuck. If you chose Strategy 1 (FEHB + Part A only) and later want Part B, you can enroll — but you’ll pay lifetime late penalties. Plan carefully!

Want to Learn More?

Free Live Webinar: Medicare, FEHB & TSP Maximization
August 18 at 6:30 pm ET | August 20 at 1 pm ET

You’ll learn:

How to coordinate Medicare + FEHB to reduce healthcare costs
Medicare Savings Programs you might qualify for
When suspending FEHB makes sense (and how to keep your flexibility)
TSP fund breakdown (C, S, I, F, G — what they do)
2026 TSP limits, withdrawals & retirement income strategies
Age-based in-service withdrawals after 59½
Live 30-min Q&A — bring your questions!

Register Here

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