Military Time in Service CalculatorTIS, Time in Grade, ETS Countdown & Pay Step Dates
Military time in service is counted from your Pay Entry Base Date (PEBD) to today in years, months and days, and it sets your pay column, promotion eligibility and retirement date. Enter your PEBD (and optionally your date of rank and ETS) to see exact time in service, time in grade, days to ETS, your next longevity pay step and every BRS milestone.
Service date definitions follow the DoD Financial Management Regulation, Volume 7A; BRS milestones follow militarypay.defense.gov.
ETS countdown
Your milestone timeline
How time in service is calculated
Time in service (TIS) is the time from your Pay Entry Base Date (PEBD) to today, counted in years, months and days. It decides your basic pay column (“Over 4”, “Over 6” and so on), when you can promote, and when you reach milestones such as BRS TSP matching at 2 years and retirement at 20. A PEBD of June 15, 2021 means 5 years, 4 months and 15 days of service on October 30, 2026, which is the “Over 4” pay column until June 15, 2027.
PEBD, BASD, DIEMS, DOR and ETS
| Date | Name | What it controls |
|---|---|---|
| PEBD | Pay Entry Base Date | Sets your basic pay longevity column. Includes all creditable service (active, Guard, Reserve), even with breaks. |
| BASD | Basic Active Service Date | Active service only. Used for active-duty retirement eligibility and some service limits. |
| DIEMS | Date of Initial Entry to Military Service | Decides your retirement plan (Final Pay, High-3 or BRS). |
| DOR | Date of Rank | Starts your time in grade (TIG) for promotion eligibility. |
| ETS / EAS | Expiration of Term of Service / End of Active Service | The day your current contract ends. |
All five dates appear on your LES or personnel record. For most people who joined active duty once and never left, PEBD and BASD are the same.
Military service milestones
| Years of service | What happens |
|---|---|
| 60 days | BRS automatic 1% TSP contribution begins |
| 2 years | First basic pay longevity step; BRS TSP matching begins (up to 4% more) |
| 3, 4 and 6 years | Further pay steps (“Over 3”, “Over 4”, “Over 6”) |
| 8 to 12 years | BRS continuation pay window (2.5× to 13× monthly basic pay for an extra service commitment) |
| Every 2 years to 40 | Pay steps continue every two years (Over 8, 10 … 40) until your grade tops out |
| 20 years | Active-duty retirement eligibility (High-3 or BRS pension) |
| 26 years | BRS TSP matching ends |
| 30 years | Common enlisted service limit for E-9; pension multiplier reaches 75% (High-3) or 60% (BRS) |
How the count works
Worked example: PEBD March 3, 2018 and an ETS of March 2, 2027. On October 30, 2026 you have 8 years, 7 months and 27 days of service, you are in the “Over 8” pay column, your next pay step (“Over 10”) is March 3, 2028, and there are 123 days to ETS. You are also inside the BRS continuation pay window (8 to 12 years).
Mistakes to avoid
Delayed Entry Program time before you shipped does not count toward PEBD for active-duty members who enlisted after 1984. Use the PEBD on your LES.
Time in grade starts at your date of rank and resets at each promotion; time in service never resets.
Guard and Reserve time adds to your PEBD (pay) but not to the 20 years of active service needed for an active-duty retirement.
Your last day in uniform may be weeks before your ETS if you sell back or take terminal leave. Plan with the ETS date, not your last duty day.
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Turn years of service into a High-3 or BRS pension estimate.
Time in service FAQ
Subtract your Pay Entry Base Date (PEBD) from today’s date in years, months and days. The calculator does this exactly and also shows your pay column, next pay step and milestones.
Your Pay Entry Base Date: the date used to compute years of service for basic pay. It includes all creditable active, Guard and Reserve service and is shown on your LES.
Enter your ETS or EAS date and the calculator counts the days, weeks and wake-ups left, plus how much of your enlistment you have completed.
Basic pay steps up at 2, 3, 4 and 6 years of service and then every two years to 40, as long as your grade has a higher rate in that column. The calculator shows the date of your next step.
PEBD counts all creditable service for pay. BASD (Basic Active Service Date) counts only active service and is used for active-duty retirement and some service limits.
Active-duty members can retire with 20 years of active service. Guard and Reserve members earn a non-regular retirement with 20 qualifying years, normally paid from age 60.
Time in grade is the time since your date of rank in your current pay grade. It resets with each promotion and is used for promotion eligibility, such as 4 months TIG for Army SGT.
Under the Blended Retirement System, the automatic 1% contribution starts after 60 days of service and matching of up to 4% more starts after 2 years, continuing through 26 years.
Not for members who entered after January 1, 1985. DEP time does not count toward PEBD or retirement.
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Manzoor Ahmad
Calculator developer & web designer · 13+ years in web development and SEO
Last reviewed: October 30, 2026I am a pharmacist turned tech geek, and I design, code and test every calculator on DexoCalc myself. I have not served in the military, so this tool does not run on opinion: the dates are counted with exact calendar math in your browser, the service-date definitions come from the DoD Financial Management Regulation, and the BRS milestones from the DoD Office of Military Compensation.
Spot a result that does not match an official source? Tell me and I will re-check it.
Sources
- DoD FMR Volume 7A: Military Pay Policy
- DoD: Blended Retirement System
- DFAS: Military pay tables (years of service columns)
- 10 U.S.C. 7311: Retirement for 20 years of service (Army)
Disclaimer: DexoCalc is independent and not affiliated with the Department of Defense (Department of War), the Department of Veterans Affairs or any military branch. Results are educational estimates; official records and your chain of command decide.
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