Military Buyback Forms Needed: SF 3108, SF 2803, and the Complete Document Checklist
The Forms That Make or Break Your Military Deposit
The military buyback process requires a specific set of federal forms, each handled by a different agency. Missing one form or submitting the wrong version can stall the entire process for weeks. Here is every document you need, in the order you will use them, with who fills out each section and where it goes.
SF-180: Request Pertaining to Military Records
What it is: Standard Form 180, the official request form for military personnel records from the National Personnel Records Center (NPRC) under the National Archives.
When you need it: Only if you do not already have your DD-214 (Member-4 or Service-2 copy). If you have your discharge papers, skip this form entirely.
Who fills it out: You. The form asks for your name, service number, Social Security number, branch, and dates of service.
Where to submit: Mail to NPRC at 1 Archives Drive, St. Louis, MO 63138, or submit electronically through the eVetRecs portal at vetrecs.archives.gov. Electronic submissions are processed faster.
Processing time: 30-90 days depending on NPRC backlog and the era of your service records.
DD-214: Certificate of Release or Discharge from Active Duty
What it is: Your official discharge document. Every other form in the buyback process depends on the information in your DD-214.
What you need: The Member-4 or Service-2 copy specifically. These versions include your character of discharge, exact dates of service, and any lost time — all data fields required by DFAS to calculate your estimated earnings. The Member-1 copy (short form) does not have enough information.
If you served in multiple branches or had multiple periods of active duty: You need a separate DD-214 for each period of service. Each one triggers its own RI 20-97 submission.
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RI 20-97: Estimated Earnings During Military Service
What it is: OPM Form RI 20-97, the form that tells DFAS to calculate your estimated military basic pay for each period of active service.
Who fills it out: You complete Blocks 1-10 (personal information, service dates, branch). DFAS completes the earnings section and returns the certified form to you.
Where to submit: Send the completed RI 20-97 along with the corresponding DD-214 to the military finance center for your branch. You can submit through the AskDFAS online portal for faster processing, or mail to DFAS at 8899 E. 56th Street, Indianapolis, IN 46249.
Key detail: One RI 20-97 per branch of service. If you served in both the Army and the Air Force, that is two separate RI 20-97 submissions with two separate DD-214s.
Processing time: 30-45 business days. If DFAS rejects the submission — usually because the DD-214 copy is illegible or incomplete — you start over without notification. Follow up at the 30-day mark if you have not heard back.
SF 3108: Application to Make Service Credit Payment (FERS)
What it is: The FERS-specific form for requesting a military service deposit calculation. This is the form your agency HR specialist uses to compute exactly how much you owe.
Who fills it out: You complete Part A (personal data, periods of military service, type of deposit). Your agency's benefits specialist completes Parts B and C (service verification, deposit calculation, interest computation).
The 3% rate: For FERS employees, the base deposit is 3% of your military basic pay during each period of active-duty service. Interest (at variable Treasury rates, compounded annually) accrues on any unpaid balance starting three years after your first civilian federal appointment.
Where to submit: Hand-deliver or send to your agency's HR benefits office with your certified RI 20-97 and DD-214 copies.
SF 2803: Application to Make Deposit or Redeposit (CSRS)
What it is: The CSRS equivalent of the SF 3108. Same purpose — calculating the deposit amount — but the rates and rules differ.
The 7% rate: CSRS employees pay 7% of military basic pay, plus interest. The higher deposit rate reflects the more generous CSRS annuity multiplier (2% per year for service beyond 10 years, compared to FERS's 1.0-1.1%).
Who fills it out: Same division of labor as the SF 3108 — you complete the employee sections, HR completes the calculation and certification.
CSRS-specific wrinkle: CSRS employees who first entered federal civilian service after September 30, 1982, must complete the post-1956 military service deposit to receive credit for that service. Without the deposit, OPM will reduce the annuity at age 62 by an amount related to the Social Security benefit attributable to the military service.
Payroll Deduction Authorization Form
What it is: An agency-specific form that sets up biweekly payroll deductions to pay your military deposit over time. The exact form varies by payroll provider — DFAS Civilian Payroll, the National Finance Center (NFC), and the Interior Business Center (IBC) each use their own version.
When you need it: Only if you choose payroll deductions instead of a lump-sum payment through Pay.gov or check.
Where to get it: Ask your HR specialist or payroll liaison. The form is not standardized across the federal government, so you cannot download a universal version.
Keeping It All Organized
The paper trail for a military buyback crosses at least four federal entities: NARA/NPRC, DFAS, your agency HR, and your civilian payroll office. Each entity handles different forms and operates on different timelines.
The most common failure point is not a missing form — it is a missing copy of a completed form. When DFAS returns your certified RI 20-97, make two copies before submitting the original to HR. When your payroll office issues the Paid-in-Full letter, make a copy before handing it to your benefits specialist. OPM may request proof of any of these documents during retirement adjudication, and reconstructing a lost document from a different agency's records can add months to the process.
The Military Buyback Guide for Federal Employees includes a document retention checklist that tracks every form, every copy, and every submission date across all four agencies in the workflow.
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