Reserve retirement age below 60: the 90-day rule in 10 U.S.C. 12731(f)

Where the age sits in the rules

Section 12731(a) lists what a person needs to be entitled, upon application, to reserve retired pay. Two of the conditions matter here: at least 20 years of service computed under section 12732, and the eligibility age set by subsection (f). The points guide covers the 20 good years and how points turn into the amount. This guide covers only the age.

The base rule is in 12731(f)(1): the eligibility age is 60. Paragraph (f)(2) then lowers it for members who meet its conditions.

The reduction rule, step by step

Read in order, 12731(f)(2)(A) says:

1. You must be a member of the Ready Reserve when you perform the duty.
2. The duty must be of a listed kind (next section).
3. It must be performed after January 28, 2008.
4. Count in blocks of 90 days. The age drops by three months for each aggregate of 90 days of that duty performed in any one fiscal year after January 28, 2008, or in any two consecutive fiscal years after September 30, 2014.
5. Each day is used once. The statute says a day of duty may be included in only one aggregate of 90 days.
6. There is a floor. Under 12731(f)(2)(C), the age may not be reduced below 50.

A fiscal year here is the federal one, October 1 through September 30 (12731(f) does not define fiscal year; the Treasury’s fiscal year under 31 U.S.C. 1102 runs that way). Only a full 90-day block lowers the age. The statute reduces the age “for each aggregate of 90 days,” so a 60-day period on its own adds nothing, though its days can still be combined with other duty under the two-year language.

Which duty counts

The statute does not cover every kind of active duty. Section 12731(f)(2)(B) lists the kinds, and a few of the plain-language points are worth knowing:

• Orders under section 12301(d) or 12304b. Section 12301(d) lets an authority designated by the Secretary concerned order a reservist to active duty with the member’s consent. Section 12304b lets a military department Secretary order Selected Reserve units to active duty for a preplanned mission in support of a combatant command, for not more than 365 consecutive days.
• Orders under a provision of law referred to in 10 U.S.C. 101(a)(13)(B). That is the second part of the definition of a contingency operation: orders under sections 688, 12301(a), 12302, 12304, 12304a, 12305 or 12406, under chapter 13 of title 10, under 14 U.S.C. 3713, or under any other provision of law during a war or a national emergency declared by the President or Congress.
• Active service under 32 U.S.C. 502(f). Service under a call authorized by the President or the Secretary of Defense for responding to a national emergency declared by the President or supported by Federal funds.
• Medical continuation. If a member is injured or becomes ill on duty of the kinds above and is then ordered to active duty under 12301(h)(1) for care, each day of that care order is treated as a continuation of the original order.
• Coast Guard augmentation. Duty ordered by the Secretary of Homeland Security under 14 U.S.C. 712 (now section 3713 of title 14, according to the Cornell notes on 12731) for emergency augmentation of the Regular Coast Guard.

The same paragraph states one exclusion: service under a call or order under section 12310 does not count. Section 12310 lets the Secretary concerned order a reservist to active duty under 12301(d) to perform Active Guard and Reserve duty: organizing, administering, recruiting, instructing or training the reserve components.

The list does not name annual training or inactive-duty drills. Whether a particular set of orders falls under a listed authority is a record question for your service; ask your service which authority your orders were issued under.

What the arithmetic looks like

The table converts full 90-day blocks into months, using only the statute’s three months per block. The last column uses a hypothetical member who turns 60 in March 2040 (born in March 1980); the months were counted with the site’s date helper, not by hand.

Three details change the picture:

• Leftover days. Of 200 counted days, two full blocks (180 days) lower the age six months. The remaining 20 days are not a block by themselves.
• Two consecutive fiscal years. After September 30, 2014, blocks can be built across two consecutive fiscal years. Duty of 60 days in one fiscal year and 45 in the next is 105 days in two consecutive fiscal years. Read with the statute’s wording, that would be one full block with 15 days left over, but the statute does not say how the days are tracked, so the service decides how they are counted and recorded.
• Days are not reused. A day placed in one block cannot also help build another.

The age is one condition for entitlement. Retired pay also requires 20 years of service computed under 12732 and an application to your service (12731(a), (b)). The amount is still set by points, the multiplier and the retired pay base (see the High-3 vs BRS guide).

How you find out your age

Section 12731(f)(3) requires the Secretary concerned to periodically notify each Ready Reserve member who has this kind of duty of their current eligibility age, including any reduction, by whatever means the Secretary considers appropriate. Separately, 12731(d) requires a written notice within a year after a person completes the years of service needed. Your service’s retirement or personnel office is the one to ask whether a given set of orders was counted, and what age shows on your record.

What does not apply today

Section 12731a was a temporary authority that let the Secretary concerned, at the Secretary’s discretion, treat certain Selected Reserve members with at least 15 years of service as having met the service requirement. By its own text the period ran from October 23, 1992 to December 31, 2001. It lowered the service requirement, not the age, and its period has ended.

In its Guard or Reserve mode, our military retirement calculator sets the start month to age 60 by default and notes that pay can start earlier after certain active duty. It does not calculate a reduced age, and you can enter a different start month yourself. The site has no calculator for the reduced age, and nothing here is a prediction of your date.

Next step

Find your service’s current record of your age and counted days, then use the military retirement calculator in Guard or Reserve mode to see what your points would pay. For questions about your own orders or entitlement, ask your service’s reserve personnel or retirement-services office, or your installation’s personal financial counselor.