For many federal employees in Puerto Rico, prior military service is more than past experience. It may become future retirement income.
Military buyback allows eligible federal employees to make a deposit for certain military service. Once paid correctly, those years may count toward the FERS civilian retirement calculation. As a result, the employee may receive a higher pension for life.
This matters because retirement decisions in Puerto Rico are rarely simple. Your FERS annuity, TSP balance, Social Security timing, tax treatment, survivor benefit election, and local retirement accounts all work together. Therefore, one missed decision can affect decades of income.
In April 2026, Puerto Rico had about 19,900 federal government employees. Some of them have prior military service. However, many do not know whether those years can increase their civilian pension.
This guide explains how military buyback works, why timing matters, and how it fits into federal employee retirement in Puerto Rico planning.
What Is Military Buyback?
Military buyback is the process of paying a military service deposit. This deposit may allow eligible active-duty military service to count toward a civilian federal retirement benefit under FERS.
FERS pension income is usually calculated with this formula:
High-3 average salary × creditable years of service × FERS multiplier
Military buyback mainly affects the second part: creditable years of service. It does not increase your High-3 salary. Also, it does not directly increase your TSP balance. Instead, it may increase the number of years used in your pension formula.
For example, assume a federal employee has:
- High-3 salary: $85,000
- Civilian FERS service: 26 years
- Eligible military service: 4 years
- FERS multiplier: 1%
Without military buyback:
$85,000 × 26 × 1% = $22,100 per year
With four military years added:
$85,000 × 30 × 1% = $25,500 per year
That is $3,400 more per year before taxes. Over 20 years, that could mean $68,000 in additional gross pension income. In addition, future cost-of-living adjustments may increase the long-term value.
Read Also: How to Calculate Your FERS Retirement Income in Puerto Rico
Why Military Buyback Matters in Puerto Rico
Military buyback is important everywhere. However, it deserves special attention in Puerto Rico.
Federal employees on the Island often need to coordinate U.S. federal retirement rules with Puerto Rico’s separate tax system. That means gross income and net income may differ. Therefore, a higher FERS annuity should be reviewed alongside tax planning, TSP withdrawals, Social Security, and local retirement accounts.
This is where retirement planning in Puerto Rico becomes practical. It is not only about reaching a retirement date. It is about knowing how much income will actually be available.
Military buyback may help in three ways:
- It may increase lifetime FERS pension income.
- It may help an employee reach a stronger service threshold.
- It may reduce pressure on TSP withdrawals in retirement.
Still, the decision should not be made blindly. You must compare the deposit cost with the expected pension increase.
Who Should Review Military Buyback?
Not every employee needs military buyback. However, many federal employees with prior service should at least review it.
Employees Who Should Pay Attention
You should review military buyback if you are:
- A veteran now working in a federal civilian role.
- A FERS employee with active-duty service after 1956.
- A Guard or Reserve member with qualifying active-duty time.
- Within three years of starting civilian federal service.
- Within 10 years of retirement.
- Receiving or expecting military retired pay.
- Unsure whether your military years already count.
The earlier you review it, the better. According to DFAS, employees who apply within three years of civilian service generally avoid interest. After that period, interest may apply.
That small timing detail can change the entire calculation.
How Much Does Military Buyback Cost?
For many FERS employees, the military service deposit is based on a percentage of military basic pay. In many post-1956 FERS cases, the deposit is commonly 3% of military basic pay. However, special rates may apply for certain years.
The key word is “basic pay.” It usually does not include every dollar you received while serving. For that reason, an official military earnings estimate is important.
DFAS also explains that filing the documents does not force you to pay. Therefore, requesting an estimate is usually a smart first step.
Documents Usually Needed
You may need:
- DD Form 214 or equivalent service record.
- Dates of active-duty service.
- Estimated military basic earnings.
- Agency service deposit forms.
- Current federal employment information.
- Planned retirement date.
After you receive the estimate, compare it with your expected pension increase. For example, a $6,000 deposit may be attractive if it adds $3,000 per year to your pension. In that case, the rough payback period may be only a few years before taxes.
However, if interest has grown for many years, the decision needs deeper review.
Why Interest Can Become Expensive
Timing matters because interest can apply to unpaid deposits. OPM announced a 4.25% interest rate for 2026 on post-1956 military service credit accounts.
That does not mean every employee pays interest immediately. The interest-free window may protect newer civilian employees. However, employees who wait too long may see the deposit cost grow.
This creates a simple planning rule:
Do not wait until the last year before retirement.
Even if you are not ready to pay, request the estimate early. Then you can decide with real numbers.
How Buyback Changes the FERS Pension Formula
OPM explains that many FERS annuities use 1% of High-3 average salary for each year of service. However, employees who retire at age 62 or later with at least 20 years of service may qualify for a 1.1% multiplier.
That higher multiplier can make military buyback more valuable.
Example: Four Years Added at Age 62
Assume this employee has:
- High-3 salary: $90,000
- Civilian FERS service: 26 years
- Military service available for buyback: 4 years
- Retirement age: 62
- Multiplier: 1.1%
Without buyback:
$90,000 × 26 × 1.1% = $25,740 per year
With buyback:
$90,000 × 30 × 1.1% = $29,700 per year
The difference is $3,960 per year before taxes. Over 25 years, that equals $99,000 in additional gross pension income before future COLAs.
For 2026, OPM announced a 2.0% COLA for eligible FERS annuitants. CSRS annuitants receive 2.8%. Therefore, a larger pension base may become more valuable over time.
Puerto Rico Tax Planning Considerations
Military buyback is a federal retirement issue. However, the retirement income it creates may affect the full tax picture.
Puerto Rico has its own tax system. Also, IRS Publication 570 explains that residents of U.S. territories may face special income reporting rules. In 2026, the IRS also reminds U.S. government employees in Puerto Rico that special filing rules may apply.
Because of this, military buyback should be reviewed with tax planning in Puerto Rico in mind.
The question is not only, “Will my pension go up?” A better question is, “How much will I keep after taxes?”
Several items should be reviewed:
- FERS annuity income.
- TSP withdrawals.
- Social Security timing.
- Puerto Rico retirement accounts.
- Filing status.
- Source of income.
- Survivor benefit election.
A larger pension can be helpful. However, it should be coordinated with the rest of the income plan.
What If You Receive Military Retired Pay?
This area needs careful attention.
OPM explains that employees receiving military retired pay generally cannot use the same military service in the FERS computation unless an exception applies. Some employees may need to waive military retired pay to receive FERS credit for that service.
That decision can be serious. Therefore, it should not be made without analysis.
Review These Factors First
Before making a choice, compare:
- The military retired pay you may give up.
- The increase in your FERS pension.
- Survivor benefit impact.
- Tax treatment.
- Household income needs.
- Health and longevity expectations.
- Spouse or family protection.
In some cases, waiving retired pay may not make sense. In other cases, the higher FERS annuity may be worth studying. This is where comprehensive financial analysis in Puerto Rico can help.
Military Buyback and the TSP
Military buyback does not directly add money to your TSP. Still, it can change how you use the TSP later.
For example, a higher FERS pension may reduce the need for large early TSP withdrawals. As a result, more of the TSP balance may remain invested longer.
For 2026, the TSP elective deferral limit is $24,500. Employees age 50 or older can make catch-up contributions. In addition, employees turning 60, 61, 62, or 63 in 2026 may qualify for a higher catch-up limit of $11,250.
This matters for late-career employees. They may be trying to do two things at once:
- Increase guaranteed pension income through FERS.
- Strengthen flexible retirement assets through TSP.
When these pieces are coordinated, the retirement plan becomes stronger.
Common Military Buyback Mistakes
Many employees make mistakes because the process looks administrative. However, the financial impact can be large.
Mistakes to Avoid
Avoid these common errors:
- Assuming military time automatically counts.
- Waiting until the final year before retirement.
- Not requesting military earnings early.
- Ignoring interest after the three-year window.
- Forgetting the deposit must be paid before retirement.
- Assuming all military pay counts as basic pay.
- Not checking military retired pay rules.
- Failing to keep proof of full payment.
- Reviewing buyback separately from TSP and Social Security.
A good review should answer four questions. What will it cost? How much will the pension increase? How long is the payback period? How does it affect the full retirement plan?
Step-by-Step Military Buyback Process
The exact process can vary by agency. Still, most employees follow a similar path.
Step 1: Collect Your Military Records
Start with your DD Form 214 or equivalent record. Confirm your active-duty dates. Also, review whether any Guard or Reserve service qualifies.
Step 2: Request Military Earnings
Next, request your military basic earnings. This helps the agency calculate the deposit estimate.
Step 3: Submit the Service Deposit Request
Then, work with your agency HR or benefits office. They can guide the correct forms and payment process.
Step 4: Review the Estimate
Do not focus only on the cost. Compare the deposit with the expected pension increase.
Step 5: Choose a Payment Method
Some employees pay in a lump sum. Others use payroll deductions where available. Also, ask whether interest will keep growing.
Step 6: Confirm Full Payment
Finally, keep proof that the deposit was paid in full. This record may be important when your retirement application is processed.
Read Also: What Does a Financial Planner in Puerto Rico Actually Do?
When Military Buyback May Not Be Worth It
Military buyback can be valuable. However, it is not always the best choice.
It may be less attractive if the deposit is very high, the employee will not retire with a FERS annuity, or the service is not creditable. It may also require caution if the employee receives military retired pay.
Health, retirement timeline, household income, and tax exposure also matter. Therefore, military buyback should be reviewed inside a broader financial planning in Puerto Rico process.
The goal is not just a bigger pension. The goal is stronger lifetime income after taxes, risk, and family needs are considered.
How IRAs and Annuities Fit Into the Plan
Military buyback may increase guaranteed FERS income. However, a complete plan usually needs other income sources too.
TSP may provide flexible withdrawals. A Puerto Rico IRA may provide local planning opportunities. Also, annuities may provide additional guaranteed income when appropriate.
Working with an IRA Puerto Rico advisor may help employees compare local retirement account options. In some cases, annuities in Puerto Rico may also be reviewed to fill income gaps.
Still, the buyback decision should usually be reviewed early. It can change how much income must come from other accounts.
Final Takeaway
Military service required time, discipline, and sacrifice. For federal employees in Puerto Rico, those years may also increase lifetime pension income.
However, the decision must be calculated carefully. First, request the deposit estimate. Next, compare the cost with the pension increase. Then, review taxes, TSP, Social Security, and survivor benefits.
Military buyback can be especially important for employees within 10 years of retirement. It can also be urgent for newer federal employees who may still avoid interest.
At JLA Financial Planning, we help federal employees in Puerto Rico review retirement income decisions in a coordinated way. A strong plan connects FERS, TSP, Social Security, Puerto Rico tax rules, military service credit, survivor elections, and long-term income needs.
