Once a VA disability rating has been continuously in effect for 20 years, the VA cannot reduce it below that level for any reason except fraud. This is what veterans and advocates call the VA 20-year rule, and it comes from 38 C.F.R. § 3.951(b). Medical improvement doesn’t matter. A new rating schedule doesn’t matter. A different examiner’s opinion doesn’t matter. The floor is locked.
What the 20-Year Rule Actually Protects
The regulation is short and blunt: a disability rating in force for 20 or more years will not be reduced below the level at which it has been in effect. The VA loses the authority to lower it based on a re-examination, a change in diagnostic criteria, or a reassessment of the original evidence. Only a finding that the rating was obtained by fraud can undo it.
The word “continuously” is doing real work in that sentence. Your rating has to have stayed at or above a given percentage for the whole 20-year run. If a 40% rating was in place for 12 years, dropped to 20% for a year, and then went back up to 40%, the 20-year clock on the 40% level starts over from the restoration. The 20% level would have its own separate clock running from whenever it was first assigned.
The same regulation applies the same terms to permanent total disability ratings granted for pension purposes: 20 years of continuous force, revocable only for fraud.
One thing the rule does not do is prevent the VA from looking at your file at all. The agency can still re-examine you and can still propose changes. What it cannot do at the 20-year point is push the rating below the protected level. If you’re at 60% and have been for 20 years, an exam suggesting your condition improved cannot drop you to 40%.
When the 20-Year Clock Starts
The 20-year period runs from the effective date of the rating to the effective date of any proposed reduction. The effective date is not the day the decision letter arrived or the day the VA finished processing your claim. It’s the date the VA assigns as the starting point for your benefits, and it often falls earlier than the decision itself.
For an original claim, the effective date is generally the later of two dates: the date the VA received the claim, or the date the disability first arose. File in January 2005 for a condition the VA finds began in service in 2003, and the effective date is typically January 2005. File in January for a condition that first manifested in March of that year, and the effective date is March.
Appeals can pull the effective date back further. Under 38 C.F.R. § 3.2500, if you filed successive review options within one year of each decision along the way, the effective date can tie back to the original claim receipt or the date entitlement arose, whichever is later. A veteran who filed in 2004, was denied, and won on appeal in 2009 can still have a 2004 effective date. That reach-back gives the 20-year clock a significant head start.
Each service-connected condition on your record runs on its own clock. Check your Rating Decision or original award letter for the specific effective date assigned to each disability. If you can’t find those documents, request your complete claims file (the C-file) from the VA.
How a Rating Increase Affects the Clock
Getting a higher rating does not reset the clock on the lower one. Each percentage level runs on its own independent 20-year timeline, and this is where veterans sometimes get confused.
Take a 30% rating for PTSD granted in 2005. In 2020 the condition worsens, and the VA increases the rating to 50%. The 30% level hits its 20-year mark in 2025 and locks in permanently. The 50% level won’t be protected until 2040. If a re-examination in 2030 finds improvement, the VA could reduce the rating back toward 30% but not below that floor.
That staggered structure is why accepting an increase is almost always the right call. Nothing you’ve already built is at risk of falling below its own floor once that floor matures, and you gain higher compensation while the new level starts its own clock.
Fraud: The Only Way Through
Fraud is the sole exception written into 38 C.F.R. § 3.951(b), and it has no time limit. A rating granted in 1990 based on fabricated evidence can be revoked in 2026. Beyond losing the rating and potentially having to repay benefits, veterans who obtain VA compensation by fraud face criminal penalties under 38 U.S.C. § 6102, which authorizes fines and up to one year of imprisonment.
The bar is high, and that’s the important part. Fraud means intentional deception. It is not the same as a wrong initial diagnosis, incomplete records, symptoms that turn out to be less severe than first assessed, or two doctors disagreeing about a condition. The VA deciding years later that it evaluated the evidence generously does not amount to fraud either. If you filed honestly and gave accurate information, the fraud exception is not a realistic threat to a rating that has crossed the 20-year mark.
The 5-Year and 10-Year Protections
You don’t have to wait two decades to get meaningful cover. Two earlier milestones sit underneath the 20-year rule and raise the bar on any proposed reduction before then.
At five years, 38 C.F.R. § 3.344 treats a rating held continuously at the same level as stabilized. The VA cannot reduce a stabilized rating on the basis of a single exam. It has to show sustained improvement through a full and complete examination, and it has to consider whether that improvement will hold up under the ordinary conditions of life rather than during a hospital stay or a period of rest. Separately, 38 C.F.R. § 3.327 generally bars the VA from scheduling routine periodic re-examinations once a condition has persisted without material improvement for five years or more. That removes the most common trigger for a reduction, which is the routine follow-up exam.
At 10 years, 38 U.S.C. § 1159 protects service connection itself. Once a disability has been service-connected for 10 continuous years, the VA cannot sever the connection except on a showing of fraud or of clear evidence that the veteran lacked the required service or discharge status. This is a different protection than the 20-year rule. At the 10-year point the VA can still reduce the rating percentage if medical evidence supports it, but it cannot zero out the benefit by taking away service connection. The 10-year rule protects the foundation; the 20-year rule protects the building on top of it.
Protecting Your Rating in Practice
The 20-year rule works on its own once the time has run, but a few habits make sure the clock keeps running the way you think it does.
Keep every Rating Decision and award letter. The effective dates printed on those documents are what drive the calculation, and reconstructing them years later is harder than filing them away now.
Attend any re-examination the VA schedules. Failing to appear can itself be grounds for a reduction under 38 C.F.R. § 3.655. If your condition has actually worsened, the exam is a chance to document that. If it results in a proposed reduction, act quickly: the reduction notice starts short deadlines under 38 C.F.R. § 3.105(e), and requesting a predetermination hearing within 30 days of the notice keeps your benefits at the current rate while the VA works through its final decision. Ignoring the letter is the one response that guarantees the worst outcome.
Keep treating. Continuous medical records showing ongoing symptoms make it much harder for the VA to argue sustained improvement if it ever gets that far. Gaps in treatment don’t automatically trigger a reduction, but they give the agency less evidence to weigh against a re-exam that suggests things have gotten better.
None of this replaces the statutory protection at 20 years. It just makes sure that when the clock hits that mark, there’s no dispute about when it started.