The 20-Year Letter: Notice of Eligibility for Reserve Retired Pay

The 20-year letter is the written Notice of Eligibility for Retired Pay that your service Secretary must send within one year after you complete 20 qualifying years of reserve service.¹ It is your proof that you have earned a reserve pension, and it starts a 90-day clock to make a decision about survivor benefits that will follow you for the rest of your career and beyond. Miss that window and the law makes the decision for you.

What the Letter Confirms

The letter states that you have met the 20-year qualifying service requirement and gives the date you became eligible. It also includes a breakdown of your total retirement points by category, showing active duty days, inactive duty training, and membership points for each year, along with information about your Survivor Benefit Plan options as required by statute.¹

Read that point breakdown carefully. If drill points are missing or a mobilization period does not appear, you want to catch the error now rather than when you apply for pay a decade later. Any discrepancies should go back through your branch’s personnel office immediately.

Keep the original letter somewhere safe and separate from your everyday documents. You will need it when you apply for retired pay, and it is the primary evidence of your eligibility if records are ever disputed. If it gets lost, contact your branch’s retirement services office for a replacement; for Army personnel, Human Resources Command at Fort Knox handles those requests.

Who Qualifies

You need 20 qualifying years of service computed under 10 U.S.C. § 12732. A year counts as “qualifying” only if you earned at least 50 retirement points during that anniversary year.² A year where you fall short of 50 points does not count toward the 20-year threshold, though those points still factor into your eventual pay calculation.

Points come from several sources. You get 15 membership points per year simply for belonging to a reserve component, prorated for partial years.² You earn one point per drill period, one point per day of active service (including annual training and mobilizations), and one point for each day you perform at least two hours of funeral honors duty. A drilling reservist who attends 48 drill periods and 15 days of annual training clears the 50-point threshold comfortably. The risk of a non-qualifying year climbs when you miss drills or skip annual training.

The “Last Years” Rule for Older Service

For anyone who reached 20 qualifying years on or after April 25, 2005, there is no restriction on which component those final years were served in. If you completed your 20 years before October 5, 1994, the law required the last eight to be in a reserve component; between October 5, 1994, and April 25, 2005, the requirement was six years.¹

When to Expect the Letter

Your branch audits your point records before issuing the letter. The Air Force generally produces it about 120 days after the close of your 20th retention/retirement year.³ Other branches follow similar timelines. If you believe you have reached 20 qualifying years and nothing has arrived, contact your personnel office rather than waiting for the letter to appear on its own.

The 90-Day Survivor Benefit Election

The most urgent thing the letter triggers is a 90-day window to choose a Reserve Component Survivor Benefit Plan (RCSBP) option using DD Form 2656-5.⁴ The SBP pays up to 55 percent of your elected base amount to your surviving beneficiary if you die.⁵ You have three choices:

Option A defers the decision until you reach retirement age. No premiums are charged, but your beneficiary receives nothing if you die before that age.⁶
Option B is a deferred annuity: your beneficiary is covered, but if you die before age 60, payments do not begin until the date you would have turned 60.
Option C is an immediate annuity: payments to your survivor start right after your death, regardless of your age.

If you are married and want Option A or B instead of full Option C coverage, your spouse must concur, and that concurrence must be notarized.⁴

What Happens If You Miss the 90 Days

If DD Form 2656-5 does not come back within 90 days, the law automatically enrolls you in Option C covering your spouse and children.⁶ Premiums will then be deducted from your retired pay when it starts, whether you intended that coverage or not. RCSBP premiums have two parts: the standard SBP cost plus a Reserve Component add-on that depends on the beneficiary type, the option you chose, and the age difference between you and your spouse or former spouse.⁷

Life Between the Letter and Retired Pay

For most reservists, the letter arrives long before any money does. The years between eligibility and the first paycheck are called the gray area, and they can last a decade or more while you wait for age 60 (or a reduced age, discussed below).

You are not entirely without benefits during that stretch. Once you transfer to the Retired Reserve, presenting your 20-year letter and transfer orders at an ID card facility gets you a Uniformed Services Identification Card.⁸ That card gives you access to the commissary, exchange, and MWR facilities. You need to be registered in DEERS and bring two forms of government-issued identification to a RAPIDS site.⁹

DFAS also offers gray area retirees a “Future Retiree” myPay account. It lets you keep your contact information current, receive reminders when your pay application window opens, and check the status of your application once you submit it.¹⁰ The letter itself does not carry TRICARE coverage during the gray area; that benefit begins when you actually retire on pay, and TRICARE Retired Reserve is a paid option in the meantime.

When Retired Pay Actually Starts

The default eligibility age is 60. You must apply for retired pay between three and nine months before that date; nine months out gives the smoothest processing, and missing the three-month mark can delay your first payment.¹¹

Some reservists reach pay earlier. If you performed qualifying active duty as a Ready Reserve member on or after January 28, 2008, your eligibility age drops by three months for every 90 cumulative days of that service, with a floor of age 50.¹² 13 Qualifying service includes mobilizations, involuntary call-ups, voluntary active duty orders under 10 U.S.C. § 12301(d), and National Guard duty under 32 U.S.C. § 502(f) responding to a federally funded national emergency. Active Guard Reserve duty under 10 U.S.C. § 12310 does not count.¹⁴

The reduction is not day-for-day. Each full 90-day block earns a three-month reduction, and leftover days below 90 do not count until you accumulate another complete block. One boundary worth knowing: this earlier age applies only to retired pay. TRICARE eligibility as a retiree still begins at age 60.¹³

When you do apply, the 20-year letter is part of the required package, along with your chronological points statement, transfer order to the Retired Reserve, your RCSBP election certificate, any promotion orders showing a higher grade, and DD-214s and active duty orders if you are claiming a reduced age.¹⁵ That is why the letter matters years after you receive it, and why the file it lives in should be the one you can always find.

1
Office of the Law Revision Counsel. 10 USC 12731 – Age and Service Requirements
2
Office of the Law Revision Counsel. 10 USC 12732 – Entitlement to Retired Pay: Computation of Years of Service
3
Air Reserve Personnel Center. Notification of Eligibility for Retired Pay (20 Year Letter)
4
Defense Finance and Accounting Service. Reserve Component Survivor Benefit Plan
5
Defense Finance and Accounting Service. Understanding SBP, DIC and SSIA
6
Soldier for Life. Reserve Component Survivor Benefit Plan Fact Sheet
7
Defense Finance and Accounting Service. RCSBP Benefit Cost
8
Soldier for Life. U.S. Army Retirement Planning Guide 2026
9
DoD Common Access Card. Getting Your ID Card
10
Defense Finance and Accounting Service. Gray Area Retirees
11
U.S. Army Soldier for Life. U.S. Army Reserve Retirement Planning Guide
12
Office of the Law Revision Counsel. 10 USC 12731 – Age and Service Requirements
13
MyNavyHR. NDAA Early Retirement
14
Soldier for Life. Receiving Reserve Retired Pay at a Reduced Age
15
U.S. Army Reserve. Retired Pay Application Checklist