Military Time Buy Back Calculator
Estimate your deposit cost and FERS pension increase.
Calculator
Enter the total sum of basic pay you earned during your military service. Do not include allowances (BAH, BAS).
The number of years of active duty service you are buying back.
Your highest average basic pay over any 3 consecutive years of civilian service.
Select the FERS multiplier that applies to your situation.
Typically 3% for FERS employees. Select 7% for CSRS.
Estimated Military Service Deposit
Increased Annual Pension
$0.00
Lifetime Pension Gain
$0.00
Break-Even Point
N/A
Pension Growth Over Time
| Year | Annual Pension (No Buy Back) | Annual Pension (With Buy Back) | Cumulative Gain |
|---|
Cumulative Pension Value Comparison
What is a Military Time Buy Back?
The military time buy back program, formally known as making a military service deposit, is a provision that allows federal employees under the Federal Employees Retirement System (FERS) or Civil Service Retirement System (CSRS) to get credit for their military service in their civilian retirement calculation. In essence, you “buy” your military years by paying a deposit, and those years are then added to your total creditable service as a civilian. This can significantly increase your future pension annuity and may allow you to retire earlier. The military time buy back calculator is a critical tool for estimating the costs and benefits before making a decision.
This program is for former military members who have received an honorable discharge and are now employed by the federal government. It is not available to those already receiving military retirement pay, unless they agree to waive that pay. A common misconception is that the “buy back” is free or automatic; it requires a deliberate application and payment of the calculated deposit. Failure to pay the deposit before retirement means the service time cannot be credited.
Military Time Buy Back Formula and Mathematical Explanation
The calculation for a military time buy back involves two primary components: the cost of the deposit and the resulting increase in your pension. Our military time buy back calculator automates this for you. Here’s a step-by-step breakdown:
- Calculate the Deposit Cost: This is the amount you must pay to receive credit. The formula is:
Deposit Cost = Total Military Basic Pay × Service Deposit Rate
For most FERS employees, the rate is 3%. For CSRS employees, it is typically 7%. It is crucial to note that if you do not pay this deposit within the interest-free grace period (generally three years after becoming a federal employee), interest will accrue, increasing the cost. - Calculate the Annual Pension Increase: This is the additional amount you will receive in your pension each year for the rest of your life. The formula is:
Annual Pension Increase = High-3 Average Salary × Years of Military Service × FERS Pension Multiplier
The multiplier is usually 1%, but it increases to 1.1% if you retire at age 62 or older with at least 20 years of total service. - Determine the Break-Even Point: This tells you how long it will take for the increased pension payments to cover the initial deposit cost. The formula is:
Break-Even Point (in years) = Deposit Cost / Annual Pension Increase
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Total Military Basic Pay | The sum of all basic pay earned during active duty. | Dollars ($) | $40,000 – $200,000+ |
| Service Deposit Rate | The percentage of basic pay required for the deposit. | Percent (%) | 3% (FERS) or 7% (CSRS) |
| High-3 Average Salary | The highest average salary over a 36-month period of federal service. | Dollars ($) | $60,000 – $180,000+ |
| Years of Military Service | The number of years of honorable active duty service. | Years | 2 – 20+ |
| FERS Pension Multiplier | The percentage used to calculate the annual pension amount. | Percent (%) | 1.0% or 1.1% |
Practical Examples (Real-World Use Cases)
Example 1: Early-Career Federal Employee
An employee served 4 years and earned $90,000 in total basic military pay. They are now a FERS employee with a projected high-3 salary of $100,000. Using the military time buy back calculator:
- Deposit Cost: $90,000 × 3% = $2,700
- Annual Pension Increase: $100,000 × 4 years × 1.0% = $4,000
- Break-Even Point: $2,700 / $4,000 = 0.68 years (approx. 8 months)
Interpretation: By paying a $2,700 deposit, the employee increases their lifetime annual pension by $4,000. The investment pays for itself in less than a year of receiving retirement benefits, making it an excellent financial decision. To learn more about FERS, you might check the official OPM site.
Example 2: Mid-Career Federal Employee with Higher Salary
An employee served 8 years with total basic pay of $180,000. Their high-3 salary is projected to be $150,000, and they plan to retire at age 62 with over 20 years of service (qualifying for the 1.1% multiplier). A military time buy back calculator shows:
- Deposit Cost: $180,000 × 3% = $5,400
- Annual Pension Increase: $150,000 × 8 years × 1.1% = $13,200
- Break-Even Point: $5,400 / $13,200 = 0.41 years (approx. 5 months)
Interpretation: The $5,400 deposit yields a substantial $13,200 increase in the annual pension. The financial benefit is immense, and the break-even point is exceptionally short. This scenario highlights how valuable the buy back becomes at higher salary levels.
How to Use This Military Time Buy Back Calculator
Our calculator is designed for simplicity and accuracy. Follow these steps to get your personalized estimate:
- Enter Total Military Basic Pay: Input the total amount of basic pay you received during your service. This can be estimated or found on your earnings statements.
- Enter Years of Service: Provide the number of years you served on active duty.
- Enter High-3 Salary: Provide your expected high-3 average civilian salary. For an accurate estimate, use your current salary or a realistic projection.
- Select Your FERS Multiplier: Choose 1.0% for most cases or 1.1% if you will be at least 62 at retirement with 20+ years of service. For complex cases, see our guide on retirement planning.
- Select Your Deposit Rate: Choose 3% for FERS or 7% if you are under the older CSRS system.
- Review Your Results: The military time buy back calculator instantly shows your estimated deposit cost, annual pension increase, lifetime gain, and break-even point.
The results help you understand the long-term financial impact. A short break-even point and high lifetime gain indicate a strong return on investment.
Key Factors That Affect Military Time Buy Back Results
- Total Military Earnings: A higher total pay during service directly increases the deposit cost.
- High-3 Civilian Salary: This is the most powerful factor. A higher high-3 salary dramatically increases the value of each year of service you buy back, leading to a larger pension boost.
- Length of Military Service: More years of service mean a larger multiplier for your pension calculation, resulting in a more significant annuity increase.
- Timing of Deposit Payment: Paying your deposit within the three-year interest-free grace period is crucial. Delaying payment leads to compounded interest, which can substantially increase the total cost of your military time buy back calculator estimate.
- Retirement Age and Total Service: Retiring at 62 or older with at least 20 years of combined civilian and bought-back military service qualifies you for the 1.1% pension multiplier instead of 1.0%, increasing your returns.
- Retirement System (FERS vs. CSRS): The deposit rate is much higher for CSRS (7%) than for FERS (3%), which changes the cost-benefit analysis significantly. Exploring investment strategies can help manage these costs.
Frequently Asked Questions (FAQ)
1. Is it always worth it to buy back military time?
For most FERS employees who do not have a military retirement, it is almost always financially beneficial. The return on investment is typically very high. Use a military time buy back calculator to see for yourself. The main exception is for those who would have to waive a valuable 20-year military retirement pension.
2. What happens if I don’t pay the deposit before I retire?
You lose the opportunity forever. The military service deposit MUST be paid in full before you separate from federal service for retirement.
3. Where do I find my total military basic pay?
You can request an estimate of your earnings from the Defense Finance and Accounting Service (DFAS) or the respective finance center for your branch of service. Your Leave and Earnings Statements (LES) or DD214s can also help. For help with finances, consider a financial advisor.
4. Can I buy back time from the Reserves or National Guard?
Yes, but typically only periods of active duty service (e.g., deployments, training) count, not inactive drill weekends. You will need documentation (like a DD214) for these active periods.
5. Does buying back time affect my VA disability benefits?
No. Making a military service deposit does not affect your VA disability compensation, VA healthcare, or other VA benefits.
6. How long is the interest-free grace period?
You have a grace period of three years from the date you first become a federal employee to pay the deposit without interest. After that, interest, which varies annually, is charged and compounded.
7. How does the buy back affect my retirement eligibility date?
The bought-back years count towards your total years of service for retirement eligibility. For example, if you have 26 years of civilian service and buy back 4 military years, you will have 30 years of creditable service, likely making you eligible to retire earlier.
8. Can I use my TSP to pay for the deposit?
Generally, no. You cannot take a loan or in-service withdrawal from your Thrift Savings Plan (TSP) to pay the military service deposit. The payment must be made with outside funds.