Compliant in March, Flagged in April — The New Chargeback Rules
You Didn’t Change Anything. The Line Moved.
A merchant who ran a clean book in March can be out of compliance in April without processing a single new dispute. On April 1, 2026, Visa lowered the threshold that decides whether a business is flagged for excessive chargebacks — and the new chargeback rules quietly redrew the line under everyone standing on it.
The change rides on a program called the Visa Acquirer Monitoring Program, or VAMP, which replaced Visa’s two older monitoring programs in 2025. Under the new chargeback rules, the question is no longer simply “are your chargebacks under one percent?” It is a different, broader calculation, with a lower ceiling and a per-incident fee attached.
If you have never heard of VAMP, that is rather the point. The merchants who get caught by the new chargeback rules are rarely the reckless ones — they are ordinary businesses who never knew the line had moved.
Two Programs Became One — With a Lower Ceiling
Before 2026, Visa ran two separate monitoring programs: one for disputes and one for fraud, each with its own threshold near 0.9%. VAMP merged them into a single ratio that combines fraud reports and disputes together, and then lowered the bar. That combination is what makes the new chargeback rules bite harder than the math first suggests.
Two things changed at once. First, the combined ratio now counts disputes that never became chargebacks — events that simply did not count before. Second, a single problem transaction can land in both the fraud and the dispute buckets, counting against you twice. Plenty of merchants watched their ratio jump overnight on paperwork alone.
The headline number: Visa’s “excessive” merchant threshold dropped from 2.2% to 1.5% on April 1, 2026 for the United States, Canada, the EU, and Asia-Pacific — a 32% cut in the fraud-and-disputes you are allowed before enforcement. A business sitting at 1.75% was comfortably compliant in March and over the line in April, having changed nothing at all.
Visa framed the shift as a measured, year-long transition — the program launched in 2025 and these final thresholds came into force in 2026 — but a transition window is cold comfort to a merchant who only learns the line has moved when the first monitoring notice lands in the inbox.
The Math Is Less Forgiving Than It Looks
The new chargeback rules only pull you into monitoring once you cross two lines at the same time: the 1.5% ratio and a floor of roughly 1,500 combined fraud-plus-dispute events in a month. Below that count you are not enrolled regardless of ratio — which is why the smallest merchants often slip under it and fast-growing ones suddenly do not.
- Excessive merchant threshold: 1.5% of settled transactions, down from 2.2% (effective April 1, 2026)
- Monitoring floor: about 1,500 combined fraud + dispute transactions per month
- The ratio: (fraud reports + disputes) ÷ settled transactions — the two are now counted together
- Enrolled-merchant fee: roughly $8 per disputed or fraudulent transaction
- First breach in 12 months: a three-month grace period before enrollment begins
The arithmetic is unforgiving. A merchant running 60,000 transactions a month could absorb about 1,320 combined events under the old 2.2% line; under 1.5%, that ceiling falls to roughly 900 — about 420 fewer allowable incidents for the exact same volume. The detailed mechanics of how these ratios are calculated sit in our breakdown of chargeback ratio thresholds.
The new chargeback rules also track something the older programs never did: a separate enumeration ratio aimed at card-testing attacks, where fraudsters fire thousands of tiny authorizations to find live card numbers. Visa flags these through its own attack-intelligence system and counts them apart from ordinary disputes — so a business hit by a bot attack can draw scrutiny even with an otherwise spotless chargeback record.
Your Acquirer’s Limit Is Lower Than Yours
Even if your own ratio is nowhere near 1.5%, you may feel the new chargeback rules through your processor. Acquirers — for most small businesses, that means your payment service provider — face their own, stricter thresholds, with an “above standard” line around 0.5% and an “excessive” line near 0.7%, enforced since the start of 2026.
Your processor’s limit is a fraction of yours, and your disputes roll up into its pooled number. So a processor can tighten requirements, demand a remediation plan, or even offboard a merchant who is individually compliant — purely to protect its own standing with Visa. The new chargeback rules quietly made your dispute rate your processor’s problem too.
That is the real shift hiding in the “A” of VAMP: Visa now leans on acquirers, and acquirers lean on you. One of the levers they reach for first is your cash — the reserve-and-hold logic we cover in why a payment processor holds your funds.
In practice that pressure arrives quietly: a request for a written remediation plan, a temporary reserve held against your deposits, a cap on monthly volume, or, at the far end, a notice that the account is being closed. None of it requires you to be formally enrolled in VAMP — a processor can act on its own risk math long before Visa does, which is why the warning often lands while you still believe you are fine.
Lower the Number Before It Lowers Your Options
The only durable answer to the new chargeback rules is to keep fewer disputes and fraud reports entering the system in the first place — and to resolve the ones that do before they harden into chargebacks. Fighting after the fact is necessary, but prevention is what actually moves the ratio.
- Fix the basics that trigger “I don’t recognize this charge”: a clear billing descriptor, obvious refund and cancellation paths, and fast customer service
- Use pre-dispute resolution (RDR, Verifi, Ethoca) — disputes resolved through Rapid Dispute Resolution are excluded from the VAMP ratio entirely
- Run fraud scoring that stops genuine fraud without over-declining good customers, since over-blocking creates its own losses
- Ask your acquirer for your fraud (TC40) data so you can see what is actually counting against you
- Fight the disputes worth fighting, with evidence built to win
The exposure is highest for card-not-present and subscription businesses — the same profile behind high-risk payment processing — and the evidence playbook for the disputes worth contesting is in Compelling Evidence 3.0. The goal under the new chargeback rules is simple: keep the combined ratio low enough that VAMP never has a reason to learn your name. Treating the new chargeback rules as a one-time cleanup is the real trap, because the thresholds and the underlying math are still being tuned and acquirers will keep ratcheting their own limits downward. The businesses that stay clear are the ones watching the ratio every month, not the ones reacting to a warning letter after the fee clock has already started.
Frequently Asked Questions
The biggest change is Visa’s VAMP program, which on April 1, 2026 lowered the “excessive” merchant threshold from 2.2% to 1.5% and now combines fraud reports and disputes into a single ratio. Disputes that never became chargebacks now count, one transaction can count twice, and enrolled merchants pay about $8 per incident.
For merchants in the US, Canada, the EU, and Asia-Pacific, the “excessive” threshold is 1.5% of settled transactions — combining fraud and disputes — down from 2.2%. It only triggers monitoring once you also exceed roughly 1,500 combined fraud-and-dispute events in a month.
Merchants enrolled in VAMP are assessed roughly $8 for each disputed or fraudulent transaction. A first breach within a rolling 12-month window typically gets a three-month grace period before enrollment and the per-incident fees begin.
Managing Disputes Under the New Rules
Find Out Where You Stand Before Visa Does.
If the new chargeback rules have you unsure whether your ratio is safe, send Brookside one recent statement and your dispute numbers. We’ll calculate where you sit against the 1.5% VAMP line, flag whether your processor’s stricter limit is the real exposure, and lay out the fastest ways to bring the ratio down before fees or offboarding start. Learn more about payment processing consumer protections from the CFPB.
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