Key Takeaways
- Understanding which periods count as creditable service is essential for accurate federal retirement planning.
- Rules can change, so stay informed about how leave, deposits, and military service affect your retirement eligibility.
Navigating the rules for federal retirement can be overwhelming, especially when it comes to creditable service. Knowing what counts toward your federal retirement in 2026 can make a real difference in your eligibility and future benefits. This guide breaks down the essential facts you need to understand your service record with confidence.
What Is Creditable Service?
Official definition for federal retirement
Creditable service is the time counted by federal retirement systems, such as the Federal Employees Retirement System (FERS) and the Civil Service Retirement System (CSRS), to determine your eligibility for retirement and the amount of your pension. It is specifically defined by federal rules and includes only certain types of service.
How creditable service is determined
Service is generally counted if it meets requirements set by the U.S. Office of Personnel Management (OPM). Most full-time, paid federal civilian positions are automatically creditable. However, other periods, like military service or time on leave without pay, may need extra steps or deposits to become creditable.
Why it matters for eligibility
Your retirement eligibility and the calculation of your annuity depend significantly on how much creditable service you’ve earned. Shortfalls can delay when you retire or affect the size of your pension. Accurately determining your creditable service helps you plan with confidence.
Which Periods Count as Creditable Service?
Service in federal civilian positions
Generally, any federal civilian job in which you receive a paycheck and retirement deductions are taken counts as creditable service. This includes permanent, probationary, and some temporary appointments well-defined by regulation. Service in Congress, the Executive Branch, and most independent agencies is included, if retirement deductions were withheld.
Military service credit rules
Active-duty service in the U.S. Armed Forces can be creditable under FERS and CSRS, provided it meets criteria set by OPM. You typically have to pay a deposit (a small percentage of basic pay earned during military service) for that time to count toward your civilian retirement.
Leave without pay and its treatment
Leave without pay (LWOP) would generally count as creditable service if it does not exceed six months in a calendar year. If LWOP exceeds this limit, only the first six months would be counted for that year in most cases.
What Does Not Qualify as Creditable Service?
Breaks in service and non-creditable periods
Not all time away from federal employment counts. A break in service (a gap between federal jobs) generally is not creditable. Similarly, time spent on furlough, suspension, or other periods away from federal employment, unless covered by regulation, do not count toward retirement.
Non-federal employment considerations
Work for non-federal entities, such as private companies or state/local governments, does not count as creditable service for federal retirement, except in specific cases where statutory provisions or intergovernmental agreements apply.
Voluntary service and internships
Unpaid internships, volunteer positions, and other non-salaried roles generally are not creditable—even if they were performed for federal agencies. Only work as an official federal employee with salary and retirement deductions counts, unless specified by regulations.
How Is Creditable Service Calculated?
Using your personnel records
To determine your total creditable service, review your Official Personnel Folder (OPF) or electronic equivalent. These records should document all your federal jobs, start and end dates, and whether retirement deductions were taken.
Handling part-time and intermittent work
Part-time and intermittent service can be creditable, but only the hours you actually work count. The OPM calculates part-time service in proportion to a full-time schedule, so your credit for each year may be less than a “full” year if you worked reduced hours.
Impact of unused sick leave
Unused sick leave is not counted toward the minimum eligibility needed to retire, but it can be added to your service for the purpose of annuity calculation under both FERS and CSRS. Typically, your total unused sick leave (rounded down to the nearest month) is added to your years of creditable service for benefit calculations.
What Is Deposit Service?
Definition and examples
Deposit service is federal time that did not have retirement contributions deducted or had a refund of contributions taken—requiring you to make a payment (deposit) for it to count. Examples include certain periods of temporary federal work before being covered by FERS or CSRS, or most military service.
Rules for making a service deposit
If you want time like temporary federal service or eligible military service to be creditable, you usually must make a deposit, which is a payment to cover retirement deductions that were not originally taken. Your HR office can provide instructions on how to initiate this process.
Implications for retirement eligibility
If you do not make the deposit, those periods may not count toward either your eligibility or the computation of your annuity, depending on your retirement system and the nature of the service.
How Does Military Service Affect Credit?
Basic rules for military service credit
Military service is creditable only if it was performed under honorable conditions and is not already counted toward a military pension (unless the pension is for a reserve component). To add it to your federal retirement, a deposit for most post-1956 service is required.
Deposit requirements for credit
The deposit for military service is typically a small percentage of the basic pay you received during those periods. The deadline to make the deposit is generally before you retire, but there can be interest added if you wait. For precise requirements, consult the latest OPM guidance.
Special considerations in 2026
Rules around military service credit have not fundamentally changed for 2026, but deadlines and applicable interest amounts may shift with updates to OPM policies. It is important to verify requirements close to your intended retirement date.
Can Sick Leave Count Toward Retirement?
Sick leave conversion under FERS and CSRS
Both FERS and CSRS provide for the conversion of unused sick leave into additional service credit for annuity calculation purposes. Only sick leave hours that have not already been used can be counted.
Recent rule changes
Previous differences between FERS and CSRS regarding sick leave treatment have largely been aligned since 2014; both now allow for its full credit for annuity calculations, but not for reaching the minimum years required to retire.
Common misunderstandings
A common error is thinking sick leave can make you eligible to retire sooner. In fact, it only increases your annuity calculation, not your service for eligibility purposes.
Common Scenarios for Creditable Service
Returning to federal service
If you return to federal service after a break, your prior creditable service typically counts, especially if you did not take a retirement refund. If you did take a refund, you may need to redeposit that amount for your previous service to count.
Service under temporary appointments
Temporary federal jobs may not automatically count toward retirement credit. These periods can become creditable only if you make a proper service deposit under OPM rules.
Transferring between retirement systems
Employees who switch between CSRS and FERS, or vice versa, may have their service credited under both systems according to transition rules. Some periods may count under one system and not the other, so it’s important to verify with your HR office which rules apply.
