Effective Dates & Back Pay

Two veterans can win the identical rating for the identical condition and receive amounts that differ by tens of thousands of dollars. The rating is the same. The effective date is not. Everything owed to you between that date and today is back pay, paid as a lump sum — and almost every effective-date problem we see was created years earlier by a decision that seemed small at the time.

The general rule under §3.400

38 USC §5110 and 38 CFR §3.400 set the default: the effective date is the date VA received the claim or the date entitlement arose, whichever is later.

The word doing the work is later. Having been sick since 2011 does not produce a 2011 effective date if you filed in 2024. Filing in 2011 does not produce a 2011 date if the condition did not exist until 2024. You need both — the claim and the entitlement — and the clock starts at the later of the two.

The exceptions are where the money is:

• Claim received within one year of separation. §3.400(b)(2) sets the effective date at the day after discharge. File within that year and you lose nothing.
• Intent to file on record. §3.155 — below.
• Increases. §3.400(o)(2) allows a one-year look-back — below.
• New and relevant evidence within a year. Under §3.156(b), evidence received within the appeal period is treated as part of the original claim, preserving that claim date.
• Service department records later found. §3.156(c) — where VA reconsiders a claim based on service records that existed but were not associated with the file, the effective date can go back to the original claim.
• Liberalising laws and new presumptives. §3.114 — below.
• Clear and unmistakable error. §3.105(a) — below.

Intent to file: the cheapest thing in the system

Under 38 CFR §3.155, you may notify VA that you intend to file for benefits. Once that intent to file is on record, you have one year to submit a complete claim. If you do, the effective date relates back to the date the intent to file was received — not the date the finished application arrived.

Practical points. An intent to file can be submitted online, by telephone with a VA representative, or on VA Form 21-0966. It is specific to a benefit type — compensation, pension, or DIC — so it covers the type, not a particular condition. It expires after one year and does not renew itself. And it is the single most common piece of free money veterans leave on the table, because nobody told them it existed until after they had spent eight months collecting evidence.

Continuous pursuit: how the appeal lanes protect your date

Under the Appeals Modernization Act framework, your original effective date survives as long as you keep the claim alive. From a decision notice, you have one year to file any of three things:

• Higher-Level Review
• Supplemental Claim
• Board appeal

Do that, and the original date holds. Do it again within a year of each subsequent decision, and it keeps holding — through as many rounds as it takes. This is continuous pursuit, and it is the reason a claim first filed in 2019 and finally granted in 2026 can pay from 2019.

There is one important extension. A Supplemental Claim can be filed at any time, even years after the one-year window closes — but a Supplemental Claim filed outside the year generally carries the date of the Supplemental Claim, not the original. The lane stays open. The effective date does not.

The costliest common mistake

It looks like this. A claim is denied. The veteran is discouraged, sets it aside, and two or three years later feels ready to try again. Rather than appealing, they file a new claim for the same condition — often because that is what the website nudges them towards, and because a fresh start feels cleaner than arguing about an old denial.

The new claim is granted. And the effective date is the date of the new claim. The years between the original denial and the refiling are gone, and they are gone permanently unless there is a CUE argument or the §3.156 provisions apply.

Effective dates for increases

When you already have a rating and ask for more, §3.400(o) applies. The general rule is the date of claim or the date entitlement arose, whichever is later — but §3.400(o)(2) creates a valuable exception:

The effective date is the earliest date on which it is factually ascertainable that the disability increased in severity, provided the claim is received within one year of that date.

"Factually ascertainable" means shown by the evidence — usually a treatment record, imaging, a hospital admission, or an examination documenting the worsening. It is not about when you first felt worse. It is about when the record first shows it.

The consequence is worth spelling out. If your treatment notes from March 2025 document a clear worsening and you file in December 2025, your effective date can be March 2025 rather than December. If you wait until May 2026 — more than a year after the March 2025 evidence — the look-back does not reach it, and you get the 2026 date. The look-back only runs one year. Filing promptly after a documented worsening is worth real money.

This rule also applies to TDIU, which is treated as a claim for increase. Where the record shows unemployability became factually ascertainable within the year before the TDIU claim, the earlier date can control.

CUE: the only route into a final decision

Once the appeal window closes, a decision becomes final and the effective date is settled — with one exception. Clear and unmistakable error under 38 CFR §3.105(a) allows a final decision to be revised where the error was undebatable and would have manifestly changed the outcome.

The remedy is what makes CUE valuable. A revised decision takes effect as though the correct decision had been made on the original date. Not the date you raised the CUE. The date of the decision that was wrong. In an old case that can be a decade or more of retroactive compensation.

The bar is correspondingly high. CUE is not a disagreement about how evidence was weighed, and it is not a claim that a later examination shows the earlier one was mistaken. It requires that the law or the facts as they existed at the time were applied incorrectly in a way no reasonable adjudicator could defend. Failing to apply a regulation, ignoring evidence that was in the file, or misapplying the rating criteria on their face are the classic categories.

New presumptives and liberalising laws

When Congress or VA creates a new presumption of service connection, the effective date is governed by 38 CFR §3.114. The general rule is that benefits are not payable before the effective date of the liberalising law. Where the claim is filed within one year of that law taking effect, the award can run from the law's effective date; filed later, it generally runs one year back from the date of claim.

The great exception, and the reason this section exists, is Nehmer v. United States Department of Veterans Affairs. The Nehmer class litigation, concerning Agent Orange herbicide exposure, produced a court-ordered framework under which VA must review previously denied claims when a new herbicide presumptive condition is added — and assign an effective date based on the date of the earlier denied claim, not the date of the new regulation. Veterans and survivors have received retroactive awards reaching back decades under Nehmer, and VA is required to conduct those reviews on its own initiative.

The lesson generalises. When a new presumptive category opens, the first question is not "should I file now" but "did I ever file for this before, and what happened to that claim?" A denial from 2007 can be the most valuable document in the file. For what has changed recently, see 2026 VA rating changes.

A worked back-pay example

The arithmetic is simple once the date is fixed. Suppose an intent to file is received in January 2024, a complete claim follows in August 2024, and in September 2026 VA grants an increase that raises monthly compensation by $700.

• The effective date relates back to the intent to file: January 2024.
• From January 2024 to September 2026 is roughly 32 months.
• 32 × $700 ≈ $22,400 in past-due benefits, paid as a lump sum.
• The $700 a month then continues going forward for as long as the rating stands.

Change one variable — no intent to file — and the date becomes August 2024, about 25 months, roughly $17,500. The seven months of difference cost about $4,900, and the only thing that produced it was a form that takes minutes to submit.

These are illustrative figures, not a prediction about your case. Actual rates depend on the rating, dependants, and the year. The combined rating calculator will show you how ratings combine; back pay is a function of that plus the date. A contingency fee, where one applies, is charged on past-due benefits only — see what representation costs.

How to check your own effective date

Your rating decision comes with a code sheet — usually the last pages. For each service-connected condition it lists the diagnostic code, the evaluation percentage, and the effective date. Read it line by line.

1. List every effective date alongside the condition and percentage.
2. Compare each to your claim history. When did VA receive the claim that produced this rating? Was there an intent to file before it? Was there an earlier claim for the same condition that was denied?
3. Check the separation date. If the claim was received within one year of discharge, the date should be the day after separation.
4. Check for a prior denial. An earlier denied claim for the same condition is a potential §3.156(c), CUE or Nehmer argument.
5. Check the increase evidence. For an increase, look for treatment records in the year before you filed that document the worsening — that is your §3.400(o)(2) argument.
6. Check the arithmetic. Compare the retroactive payment you received against the rate tables for each period. VA's back-pay calculations are sometimes wrong, particularly where dependants were added mid-period.

If the effective date is wrong

The remedy depends entirely on how old the decision is.

• Within one year of the decision. You have the full range of options. Where VA applied the wrong date on the record it already had, a Higher-Level Review is usually the fastest route. Where you need to submit evidence establishing an earlier date, use a Supplemental Claim.
• More than a year, decision final. CUE is the route — and effective-date errors are among the more successful categories of CUE, because they often turn on documents plainly in the file rather than on judgement calls.
• Records surfaced that VA should have had. §3.156(c) can restore the original claim date without needing a CUE argument at all.
• VA never obtained records it was required to obtain. That is a duty-to-assist error, and it is a recognised ground for Higher-Level Review.

What we do

Effective-date work is unglamorous and it is where the money usually is. We file an intent to file the day a case comes in, so the clock starts immediately. We check the claim history for prior denials that could carry an earlier date under §3.156(c), Nehmer or CUE. We track the one-year window on every decision so the date is never lost to a lapse. And we check VA's retroactive arithmetic, because it is not always right.

We do not promise a particular date, an amount, or an outcome. What we can do is make sure the earliest date the law allows is actually argued for — which, on a surprising number of decisions, nobody ever did.