MST back pay is the retroactive lump sum the VA owes once it approves a disability claim tied to military sexual trauma, and it equals your monthly compensation rate multiplied by the number of months between your effective date and the approval date. For a veteran rated at 70% with no dependents, each month of retroactive eligibility is worth $1,808.45 in 2026; at 100%, it is $3,938.58. The two numbers that decide the size of your check are your rating and your effective date, and the effective date is the one you have the most power to influence.
How the Amount Is Calculated
The math is simple. Take the monthly compensation rate for your disability rating, multiply by the months between your effective date and the date of approval, and adjust for dependents and any cost-of-living increases that took effect during the retroactive period.
The 2026 monthly rates for a veteran with no dependents include:
- 30% rating: $552.47
- 50% rating: $1,132.90
- 70% rating: $1,808.45
- 100% rating: $3,938.58
Veterans with a spouse, children, or dependent parents receive higher amounts at ratings of 30% and above.1U.S. Department of Veterans Affairs. Veterans Disability Compensation Rates PTSD stemming from MST is commonly rated at 50%, 70%, or 100%, so even a few extra months of retroactive eligibility carry real weight. A veteran rated at 70% whose effective date moves back by a year gains roughly $21,700; at 100%, a two-year correction can exceed $94,000.
Once approved, the lump-sum deposit typically arrives within 15 to 60 days, sent directly to the bank account on file with the VA.2U.S. Department of Veterans Affairs. The VA Claim Process After You File Your Claim You can track it through your VA.gov account.
The Effective Date Drives Everything
Under 38 C.F.R. § 3.400, the effective date is the later of two dates: the date the VA received the claim, or the date entitlement arose. For most MST survivors, that ends up being the date the VA received a formal claim or a qualifying earlier communication. It is not, under current law, the date the trauma occurred or the date you left service.
That framing matters because MST often goes unreported during service, and many survivors wait years or decades before filing. Every month between discharge and filing is a month of retroactive compensation that the rules will not recover for you.
Two Tools That Push the Date Earlier
Two mechanisms can move the effective date back and add months to your lump sum.
The first is an Intent to File. Submitting VA Form 21-0966, or simply starting a disability claim on VA.gov while signed into a verified account, notifies the VA that you intend to file. That submission date becomes the potential effective date as long as you complete the formal claim within one year.3U.S. Department of Veterans Affairs. Your Intent to File a VA Claim For survivors who need time to gather records or prepare emotionally, the ITF preserves up to 12 months of back pay that would otherwise be lost.
The second is the one-year discharge rule. Under 38 C.F.R. § 3.400(b), veterans who file within one year of leaving active duty may receive an effective date of the day after discharge. If you are in that window, filing now is worth serious money.
How Processing Time Builds the Retroactive Amount
As of February 2026, the VA takes an average of about 76.6 days to complete a disability claim.2U.S. Department of Veterans Affairs. The VA Claim Process After You File Your Claim MST claims often run longer because they lean on circumstantial and behavioral evidence rather than clean service records. If the initial decision is unfavorable and you appeal, timelines stretch: a Higher-Level Review or Supplemental Claim adds months, and a case that reaches the Board of Veterans’ Appeals can take one to three years or more.
Every month of delay is another month of back pay owed, provided your effective date holds. Filing a Fully Developed Claim, with medical records, evidence, and supporting statements submitted upfront, shortens the evidence-gathering phase that is usually the slowest part of the review.
Fixing an Effective Date That Was Set Too Late
Effective-date errors are among the most common problems in VA decisions, and correcting one can unlock a large retroactive payment. Your options depend on whether the decision is still within its one-year appeal window.
For decisions that are not yet final, three lanes are available. A Higher-Level Review asks a senior reviewer to re-examine the existing record, and it fits clear errors such as the VA ignoring an Intent to File date or misapplying the one-year discharge rule; no new evidence is allowed. A Supplemental Claim lets you submit new and relevant evidence supporting an earlier date. A formal appeal to the Board of Veterans’ Appeals handles complex cases or those where earlier review failed.
For decisions that have already gone final, the doors narrow. A Clear and Unmistakable Error motion under 38 C.F.R. § 3.105(a) argues that the VA made an obvious legal or factual mistake at the time of the original decision. The bar is high, but a successful CUE motion resets the effective date to what it should have been. Separately, under 38 C.F.R. § 3.156(c), if service department records that existed at the time of the original claim are later associated with the file, the VA must reconsider the claim and can restore the original filing date as the effective date.4U.S. Department of Veterans Affairs. Board of Veterans’ Appeals Decision, A22003141
One concept protects effective dates across a long fight: continuous pursuit. If you file a review request within one year of each unfavorable decision, the claim is treated as continuously pursued and the effective date relates back to the original filing date. Miss a one-year deadline and you generally forfeit that earlier date.
What Comes Out of the Check
Three issues affect what you actually keep.
Attorney fees. Under 38 U.S.C. § 5904(d)(1), attorney fees on VA claims are capped at 20% of total past-due benefits awarded. If a valid fee agreement is on file, the VA can pay the attorney directly out of the retroactive lump sum.4U.S. Department of Veterans Affairs. Board of Veterans’ Appeals Decision, A22003141 Attorneys are not entitled to any portion of future monthly payments, only the retroactive award. If the VA fails to withhold the fee and you spend the money, you still owe the debt; the VA has treated that as a valid overpayment subject to collection.
Taxes. VA disability compensation, including retroactive lump sums, is excluded from federal taxable income.5U.S. Army, myarmybenefits. Federal Taxes on Veterans’ Disability or Military Retirement Pensions If you previously received military retirement pay that was taxed and are now getting a retroactive VA rating covering that same period, you may be entitled to refunds. Amended returns are filed on IRS Form 1040X, and for VA disability determinations made on claims filed after June 17, 2008, the statute of limitations runs one year from the date of the determination.
Retiree offsets. Veterans receiving both military retired pay and VA disability compensation must, by law, waive retired pay equal to the VA payment. A retroactive MST award can therefore create adjustments to prior months of retired pay and, in some cases, a debt owed to the Defense Finance and Accounting Service.6Defense Finance and Accounting Service. VA Waiver and Retired Pay, CRDP, CRSC Concurrent Retirement and Disability Pay softens this: retirees with a combined VA rating of at least 50% may receive full retired pay alongside VA compensation with no waiver. If a retroactive rating increase pushes your combined disability to 50% or above, DFAS audits the account and may owe retroactive concurrent pay reaching back as far as January 1, 2004.7Defense Finance and Accounting Service. Concurrent Retirement and Disability Pay Combat-Related Special Compensation is a separate entitlement for combat-related disabilities, and a retiree may receive only one of the two, not both.
Legislation That Could Rewrite the Rule
The Moral Injury Recognition and Restitution Act (H.R. 7976), introduced on March 18, 2026, by Representatives Salud Carbajal and Don Bacon, would require that once an MST-related disability claim is approved, benefits be paid retroactively to the day after the veteran’s discharge from service, regardless of when the claim was filed.8U.S. House of Representatives, Rep. Don Bacon. Moral Injury Recognition and Restitution Act As of June 2026, the bill has been referred to the House Subcommittee on Health within the Committee on Veterans’ Affairs and has 13 cosponsors from both parties.9U.S. Congress. H.R.7976 Cosponsors The Veterans of Foreign Wars has endorsed it.10U.S. House of Representatives, Rep. Salud Carbajal. Veteran Restitution and Justice Act
The bill has not been enacted. If it becomes law, awards that now cover months or a few years could cover decades. Until then, the effective-date rules described above are what govern your lump sum, and the Intent to File is still the fastest way to protect back pay you have not yet claimed.