What the FERS Minimum Retirement Age actually is, and why it's not one number.

The FERS Minimum Retirement Age — the MRA — is the age at which a federal employee can first draw a retirement annuity under certain retirement provisions, even with as few as 10 years of creditable service. It is not one number. It depends on the year you were born, and getting it wrong is one of the most common errors in retirement timing planning.

Let me lay out exactly how OPM defines it, what it unlocks, and what it doesn’t.

The birth-year table.

Under 5 U.S.C. § 8401 and the implementing regulations, the FERS MRA depends on the employee’s year of birth:

• Born before 1948— MRA is 55.
• Born 1948–1952— MRA is 55 plus 2 months for each year after 1947 (so 55 years 2 months through 55 years 10 months).
• Born 1953–1964— MRA is 56.
• Born 1965–1969— MRA is 56 plus 2 months for each year after 1964 (so 56 years 2 months through 56 years 10 months).
• Born in 1970 or later— MRA is 57.

For the large majority of federal employees reading this today, the number that matters is either 56 or 57. The 55 used to be a thing. It isn’t anymore for newer entrants.

What the MRA actually unlocks.

Hitting your MRA is necessary but not sufficient. Reaching the MRA unlocks one specific retirement pathway: the MRA+10 retirement, which requires you to have at least 10 years of creditable FERS service and to be at or past your MRA.

But — and this is the part that surprises people — the MRA+10 retirement comes with an age reduction if you retire before age 62. Specifically, the annuity is reduced by 5% per year (or 5/12 of 1% per month) for each year you are under age 62 when the annuity begins.

A 56-year-old with 30 years of service who retires under MRA+10 does not get the full 1.0% × 30 — they get that figure reduced by 30% (5% per year × 6 years under 62). That is a permanent reduction applied to the annuity for life. It is also avoidable, and I’ll cover the avoidance options in the next article.

What the MRA doesn’t unlock.

Hitting your MRA doesn’t mean you have to retire. It also doesn’t, by itself, qualify you for an immediate unreduced annuity. For that, you need one of the standard retirement combinations:

• Age 62 with 5 yearsof creditable service — the cleanest “early out” most federal employees don’t realize they have.
• Age 60 with 20 years.
• MRA with 30 years.
• MRA with 10 years— available, but with the age reduction discussed above.

The standard combinations produce an immediate, unreducedannuity. The MRA+10 path produces an immediate but reduced annuity. Same starting date, different annuity. Conflating the two is the mistake.

Why the MRA matters even when you don’t plan to retire at it.

Even employees targeting an unreduced retirement at 62 or later need to know their MRA, because it determines:

• VERA eligibility under certain agency restructurings.
• Phased retirement eligibility (MRA required).
• The earliest possible deferred retirement commencement age (MRA with 5 years).
• The earliest possible MRA+10 retirement if life changes accelerate your plans.

It is one of those numbers worth knowing three decades before you think you need it.