Military separation pay calculator (involuntary separation pay, full and half)

The official formula: full separation pay = 10% × years of active service × (12 × monthly basic pay at separation). Half separation pay is half of that. This comes straight from 10 U.S.C. 1174(d) and the DoD Financial Management Regulation, Volume 7A, Chapter 35, para. 3.4. This page covers involuntary separation pay (ISP) only, not disability severance pay or retirement.

Calculator

How years are counted

Each full year counts as a year. Each extra full month counts as 1/12 of a year, and leftover days are dropped (10 U.S.C. 1174(f)). Any period you were already paid separation, severance or readjustment pay for can't be counted again (1174(g)).

Full vs. half: who gets what

From DoD's official Separation Pay page (policy: DoDI 1332.29):

Full ISP requires all of these:

• At least 6 but fewer than 20 years of active service (Reserve members: 6 years of continuous active service right before separation).
• An honorable characterization.
• Involuntary separation, through denial of reenlistment or denial of continuation, while fully qualified.
• A written agreement to serve at least 3 years in the Ready Reserve after separation.
• A written acknowledgment of the repayment rules (below).

Half ISP has the same service and Ready Reserve requirements, allows honorable or general (under honorable conditions), and applies when you're denied reenlistment or continuation because you're not fully qualified, or under a Service program set at the half level. DoD's examples include weight-control failure, family care plan problems, security clearance issues, mental or physical conditions that aren't a disability, and alcohol or drug rehab failure.

Who gets nothing

DoD lists these as not eligible for ISP:

• You separate at your own request.
• You decline Reserve service on separation.
• You haven't finished your initial enlistment or initial obligated service.
• You're released from active duty for training.
• You're eligible for retired or retainer pay.
• You're separated for performance, misconduct or other disciplinary reasons.
• A warrant officer whose appointment is terminated and who then elects to enlist.
• A Service-specific program set at a no-payment level.

Exception: a sole survivorship discharge gets full ISP even with fewer than 6 years, and without the Ready Reserve requirement (10 U.S.C. 1174(i)). Officers have extra rules for twice failing promotion (1174(a)(3)–(4)). Ask your finance or personnel office how they apply to you.

The catch: you may pay it back

• VA disability: if you later get VA disability compensation, VA withholds it until the separation pay is recouped. The law says the amount recouped is the separation pay minus the federal income tax that was withheld from it (10 U.S.C. 1174(h)(2)). There's no recoupment for a disability incurred or aggravated during a later period of active duty.
• Military retirement: if you later qualify for retired or retainer pay (for example, Guard/Reserve retirement), it's deducted from that pay in monthly installments until the full amount is repaid (1174(h)(1)).
• DoD says waivers of repayment aren't authorized. Factor this in before you count the lump sum as "free money," and see how VA back pay works in VA back pay and effective dates.

Before you sign out

1. Get your separation pay eligibility and the computation from your finance or personnel office in writing.
2. Lock in health coverage: see TRICARE after separation (involuntary separation usually means TAMP).
3. File VA disability before you leave with a BDD claim.

Related: VA back pay and effective dates · Separation pay calculator · TRICARE after separation · 2027 VA pay chart (coming) · 2026 VA pay chart · Leaving-the-service timeline · How to read your LES · All vet benefit guides