Military Time Buyback: How Purchasing Back Service Grows Your FERS Pension

The Mistake: Leaving Years of Service on the Table

If you served on active duty before becoming a federal civilian employee — and you did not retire from the military with a military pension — you are eligible to purchase that active-duty time back and have it counted as creditable civilian service. It is one of the most overlooked levers in federal retirement planning, and the longer it sits unused, the more it costs to fix.

This is not the same as a military retirement. It applies to veterans who served but separated before reaching 20 years — the point at which military retired pay begins. If that describes you, your prior active-duty time is currently sitting outside your FERS or CSRS service computation date, doing nothing for your pension. A military deposit brings it inside.

What a Military Deposit Actually Does

Under 5 U.S.C. § 8411(c), non-retired active-duty service performed before your federal civilian appointment can be credited toward your FERS service computation date (SCD) once you pay a deposit covering a percentage of the basic military pay you earned during that period, as detailed in OPM's CSRS/FERS Handbook, Chapter 23 — Creditable Military Service. Crediting that service does two things to your pension at once:

• It adds years to your length-of-service multiplier. Your FERS pension is calculated as a percentage of your high-3 average salary multiplied by your years of creditable service. Every year of military service you buy back is a year added directly to that calculation — for the rest of your life, in every annuity payment you ever receive.
• It can move up your retirement eligibility date. Federal retirement eligibility is based on a combination of age and total creditable service. Adding three, four, or more years of prior active-duty time can shorten the distance between where you are today and the day you qualify to retire.

Without the buyback, that time simply does not exist for pension purposes. Your SCD reflects only your civilian service, your pension multiplier is smaller, and your retirement eligibility date is later than it needs to be.

The Deposit and Interest: Why Timing Is Everything

The buyback is not free — it is called a deposit for a reason. You pay a percentage of the basic military pay you earned during your active-duty period, calculated from your DD-214 and a certified earnings statement from your service's finance center.

Here is the part most federal employees don't find out until it's expensive: interest begins accruing on an unpaid deposit after an initial grace period, and it compounds annually for as long as the deposit goes unpaid. The sooner you start the process after becoming a federal employee, the less interest accrues, and the cheaper the deposit is to complete. Employees who wait five, ten, or twenty years before looking into their buyback often find that accumulated interest has added thousands of dollars to what would have been a modest deposit.

We regularly review cases where an employee waited long enough that the deposit plus accrued interest gives them pause — understandably, since the number on the page looks a lot bigger than it would have looked a decade earlier. But in nearly every case we've reviewed, the added years of service and the higher pension multiplier still make the deposit worth paying, even at the higher interest-inclusive cost. The real cost of waiting isn't just the interest — it's the years spent not knowing your options.

How to Start the Process

The process begins with two documents:

• Your DD-214 (Certificate of Release or Discharge from Active Duty), which establishes your dates of active-duty service.
• A certified statement of your military earnings, requested from your branch's finance center (for most veterans, this comes from the Defense Finance and Accounting Service (DFAS)).

Your agency's HR office or servicing personnel office uses these documents to calculate your exact deposit amount, including any accrued interest, and to set up a payment plan. You can typically pay in a lump sum or in installments before you retire — but the deposit (and any additional interest) must be paid in full before you separate in order for the service to count toward your pension calculation.

Who Should Look Into This

You are a candidate for a military deposit if:

• [ ] You served on active duty at any point before or during your federal civilian career
• [ ] You did not complete 20 years of active-duty service and are not receiving military retired pay
• [ ] You have never requested a military deposit computation from your agency
• [ ] You are unsure whether your current Service Computation Date already reflects your military time

If any of these apply, the only way to know your real number is to request the computation. There is no cost to ask — the cost only exists once you decide to pay the deposit.

Frequently Asked Questions

Do I have to buy back my military time?

No. It is entirely optional. But if you don't complete the deposit before you retire, that time will not count toward your pension calculation or your retirement eligibility date.

What if I retired from the military with a military pension?

Generally, if you are receiving military retired pay, you must waive that military retired pay in order to also credit the same service toward your civilian pension — a separate and more involved decision that depends heavily on your individual numbers. This article addresses non-retired active-duty service, which does not involve that tradeoff.

Does this affect my TSP or FEGLI?

No. A military deposit affects only your creditable service for pension calculation and retirement eligibility purposes. It has no effect on your TSP balance or your FEGLI coverage.

I've heard the interest makes it not worth it anymore. Is that true?

It depends entirely on your numbers — years of service, salary, and how long the deposit has been accruing interest. This is exactly the kind of calculation that should be run individually rather than assumed one way or the other. We include this calculation in every complimentary Pay Stub Review.

The Bottom Line: Ask the Question Before You Assume the Answer

Every year you delay finding out your deposit amount is a year of additional interest accruing on a number you haven't even confirmed yet. Whether the buyback makes sense for you depends on your specific years of service, salary history, and how close you are to retirement — but you cannot make that decision with real numbers until you request the computation.

Free Military Buyback Review — Included in Your PSR Report

We include a full military service credit review in every Pay Stub Review (PSR) at no cost.

We will help you request your DD-214-based earnings statement, calculate your deposit and accrued interest, and show you exactly how the additional service affects your pension multiplier and retirement eligibility date — in plain numbers, not estimates.

You served. Make sure that service counts twice.

Contact us today to schedule your free PSR. We serve federal employees throughout the CSRA and across the nation.

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Legal Disclaimer: The information in this article is provided for general educational purposes only and does not constitute legal, tax, or financial advice. Federal benefits laws and regulations are subject to change. Individual circumstances vary. Federal employees should consult with a qualified federal benefits specialist and their servicing HR office before making decisions regarding military service deposits, retirement eligibility, or pension calculations. Federal Benefits Exchange is not a law firm and does not provide legal advice. American Amicable life insurance products may be discussed as part of a comprehensive benefits review.