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What you need to know

The short answer

The 5-year rule

To keep FEHB in retirement, you generally must be enrolled for the 5 years right before you retire (or since your first chance to enroll) and retire on an immediate annuity.

Medicare Part B is a choice for most

Non-postal retirees can keep FEHB without Part B. Many add Part B at 65 anyway, because some plans then waive deductibles and copays or help pay the premium.

Postal employees have different rules

Since January 2025, postal employees and retirees are in the Postal Service Health Benefits (PSHB) program. Most who become eligible for Medicare now need Part B to keep PSHB coverage.

Your spouse's coverage depends on you

Your spouse can keep FEHB after your death only if you have Self Plus One or Self and Family coverage and elect a survivor annuity.

Avoid these

Mistakes we see most

Retiring before meeting the 5-year rule

You can't get FEHB back later. Check your enrollment history before you set a date.

Missing the Part B window

If you don't enroll when first eligible and aren't covered by active employment, the late penalty is 10% for each 12 months you waited, for life.

Waiving the survivor annuity

It can leave your spouse without health coverage.

Skipping Open Season

Premiums and plans change every year. A quick comparison can save hundreds.

Educational information only, based on rules in effect as of October 2026. Benefit rules change. Confirm details with OPM, your agency or the TSP before making decisions.