Understanding federal retirement and health insurance rules before you retire can protect thousands of dollars per year in benefits. Many federal employees don't realize that retiring even a few months too early can cost them coverage they assumed was guaranteed.
The problem is that the rules are spread across multiple agencies — OPM for retirement, your agency for payroll, and separate carriers for dental and vision. This guide breaks the system into five clear areas: the pension, the five-year health rule, FEHB costs, dental and vision coverage, and Medicare coordination. Each section ends with a step you can take today.
1. Your FERS Pension Is Only Part of the Picture
The FERS Basic Annuity is the foundation of federal retirement, but it is usually smaller than new retirees expect. The standard formula is 1% of your highest three-year average salary per year of service — or 1.1% per year if you retire at 62 with at least 20 years of service.
That means a retiree with 30 years of service and a high-3 average of $80,000 receives roughly $24,000 per year before survivor elections and taxes. Social Security and your Thrift Savings Plan (TSP) balance are designed to make up the rest of your retirement income.
The Office of Personnel Management states that "your annuity estimate depends on your length of service and 'high-3' average salary," and it provides official calculators for this purpose at OPM Retirement Services.
How to apply this: Request an official retirement estimate from your agency's HR office and compare it against your TSP projections this month — don't wait for your retirement application.
2. The Five-Year Rule Decides Whether You Keep FEHB
To carry federal retirement and health insurance benefits into retirement, you must meet the five-year rule: you need to be enrolled in the Federal Employees Health Benefits (FEHB) program for the five years immediately before retirement, or since your first opportunity to enroll.
This rule trips up two groups of employees:
- Employees who dropped FEHB earlier in their careers to save money
- Employees who converted to a position where they were ineligible for FEHB, then came back
If you retired without meeting the five-year requirement, you generally cannot re-enroll after retirement. There are narrow exceptions — for example, time on active military duty or certain non-pay status periods can count toward enrollment if you resume coverage promptly.
How to apply this: Pull your FEHB enrollment history through your agency's HR system and verify your continuous enrollment dates against your planned retirement date.
3. Know What FEHB Actually Costs After You Retire
One of the biggest advantages of federal retirement is that the government continues to pay most of your premium. As a retiree, the government still contributes roughly 70–75% of your FEHB premium — the same share active employees receive.
In fact, the employer share is set by statute at either 72% of the program-wide weighted average premium or 75% of your specific plan's premium, whichever is less.
Premiums are deducted from your monthly annuity payment, so you never lose coverage for missing a payment. However, plan premiums rise annually, and retirees pay the full cost with after-tax dollars rather than pre-tax payroll deductions — a detail that surprises many new retirees.
| Plan type | Typical cost profile | Action to take |
|---|---|---|
| High-option fee-for-service | Highest premiums | Check if a lower plan covers your needs |
| Standard option | Mid-range premiums | Compare copays and drug tiers |
| HDHP with HSA | Lowest premiums | Verify you can still contribute after Medicare |
| HMO | Lowest out-of-pocket | Confirm your doctors remain in network |
How to apply this: Use the plan comparison tool on the OPM healthcare and insurance portal during the next Open Season to price your likely retiree premiums.
4. FEDVIP Covers What FEHB Doesn't
FEHB does not include standalone dental or vision coverage. Instead, retirees can keep FEDVIP — the Federal Employees Dental and Vision Insurance Program — if they were enrolled as an employee and continue the enrollment into retirement.
FEDVIP is administered through BENEFEDS, which handles enrollment, billing, and carrier selection for dental and vision plans. Retiree premiums are deducted from annuity payments just like FEHB.
A common scenario: an employee enrolled in dental coverage during their final year of service assumes it converts automatically. It doesn't — you must elect to continue FEDVIP during the retirement process, or you lose it. Certain involuntary separations and early retiree categories have different access rules, so check your eligibility status directly.
How to apply this: Log into BENEFEDS before you retire and confirm your dental and vision enrollments are flagged to continue into retirement.
5. Coordinate FEHB With Medicare at 65
Federal retirees who qualify for Medicare face a key decision: whether to enroll in Medicare Part B, which carries a monthly premium (the 2025 standard Part B premium is $185, per the Centers for Medicare & Medicaid Services) alongside their FEHB plan.
For most retirees, keeping FEHB as the primary payer and adding Part B provides the strongest coverage — FEHB pays second and picks up many of Medicare's cost-sharing charges. If you stay enrolled in Part A only, FEHB generally remains your primary coverage and you pay no additional premium.
Timing matters. Retirees who are 65 or older when they retire have a Special Enrollment Period to sign up for Part B without penalty, but waiting too long after eligibility can trigger late-enrollment penalties that last a lifetime.
How to apply this: Contact your FEHB carrier and ask for its Medicare coordination rules in writing, then confirm your Part B enrollment window with Social Security before your retirement date.
Frequently Asked Questions About federal retirement and health insurance
How does survivor coverage work for a spouse after I die?
If you elected a survivor annuity, your spouse can keep federal retirement and health insurance benefits with their own premiums and government contribution. A key exception: if you waive the survivor benefit, your spouse loses all FEHB and FEDVIP access — and you cannot restore it after your death.
Can I suspend my FEHB coverage and re-enroll later?
Yes, if you enroll in Medicare Part B or a Medicare Advantage plan, you may suspend FEHB and return during a future Open Season. The advantage is that suspension preserves your five-year rule status, unlike cancellation, which permanently ends your enrollment rights after retirement.
What happens if I retire before age 65?
You keep full FEHB coverage at retiree rates with the government contribution, and you can delay Medicare entirely. One scenario to watch: if you had FEHB under a high-deductible plan with a health savings account, you cannot contribute new HSA funds once you enroll in any part of Medicare, so plan your HSA spending before enrolling.
Does my adult child keep coverage after I retire?
Eligible children can stay on your FEHB self-plus-one or self-and-family enrollment until age 26, with no student or dependent status requirement. An exception exists for incapacitated children: you can request continued coverage beyond 26 by submitting medical documentation to your carrier within 60 days of the birthday.
Can TRICARE-eligible retirees enroll in FEHB instead?
Yes, TRICARE-eligible uniformed service retirees may enroll in FEHB, but they cannot use FEHB funds to pay TRICARE premiums. A common edge case: a military retiree taking a civilian federal job at 55 can enroll in FEHB immediately, building credit toward the five-year rule before their civilian retirement.
Conclusion
Planning federal retirement and health insurance correctly comes down to a handful of decisions made years before your last day of work. Keep these takeaways in mind:
- Verify your five-year FEHB enrollment history before choosing a retirement date
- Confirm your FEDVIP dental and vision enrollments carry over through BENEFEDS
- Decide on Medicare Part B enrollment at 65 and coordinate it with your FEHB plan
- Get an official annuity estimate so your pension, Social Security, and TSP add up
The rules are unforgiving, but they are also predictable — and every one of these benefits can be protected if you act early. Start today by logging into OPM Retirement Services to review your service history and request a personalized retirement estimate.
