Visa VAMP Explained: What the April 2026 Threshold Change Means for Your Account

What changed on April 1, 2026

Visa's Visa Acquirer Monitoring Program, VAMP, consolidated the network's older fraud and dispute monitoring programs into one framework. The merchant-level threshold that matters is called Excessive Merchant, and until March 2026 it sat at a 2.20% VAMP ratio. On April 1, 2026, Visa reduced that to 1.50%.

That's a significant tightening. A merchant that was comfortably under the old 2.20% line might now be sitting above 1.50% without changing anything about its business. And for high-risk merchants, subscription brands, nutraceuticals, travel, coaching, where chargeback ratios are structurally elevated by the billing model, the lower threshold means the margin for error has shrunk by nearly a third.

The change isn't arbitrary. Visa has been tightening its monitoring programs across the board, and the full thresholds and source citations are on our VAMP 2026 guide, which includes an interactive calculator. Here's the plain-English version.

How the VAMP ratio works

The VAMP ratio is count-based, not dollar-based. That distinction matters more than it sounds, because it means a single high-value dispute doesn't hurt you more than a small one, but a pattern of many small disputes absolutely does.

VAMP ratio = (fraud reports [TC40] + disputes [TC15]) ÷ settled Visa card-not-present transactions [TC05]

The numerator counts two things: fraud reports (TC40, these are filed by issuing banks when they detect fraud on a cardholder's account) and disputes (TC15, these are formal chargebacks). The denominator is your settled Visa card-not-present transaction count for the same month.

Here's the detail that catches merchants off guard: a single fraud chargeback can generate both a TC40 fraud report and a TC15 dispute record. Visa's published formula lists the two counts separately with no deduplication clause, so the conservative and best-supported reading is that a fraud dispute contributes to both counts in the numerator. That means fraud-driven chargebacks effectively double-count, which is why fraud prevention is the single highest-leverage move for keeping your ratio down.

The thresholds, in plain English

For a US merchant, Visa identifies you as an Excessive Merchant when both of these conditions are met in a calendar month:

Both conditions are required. Below the 1,500-item monthly floor, a merchant is not formally identified under VAMP regardless of how high the ratio runs. But, and this is the part most merchants miss, your acquirer's own internal limits are typically much stricter than Visa's. A processor may flag you at 0.9% or 1.0% long before you hit Visa's formal threshold, because the processor is on the hook if you cross it. So the 1,500-item floor is not a safe place to operate; it's just the point where Visa formally steps in.

Mastercard's side: ECM and BRAM

Visa isn't the only network watching your chargeback ratio. Mastercard runs two programs that high-risk merchants need to track.

The Excessive Chargeback Program (ECM) uses a chargeback-to-transaction ratio (CTR), with a wrinkle competitors often get wrong: the denominator is the preceding month's sales, not the current month's. The thresholds:

• ECM (Tier 1): ≥100 chargebacks and ≥1.50% CTR
• HECM (Tier 2): ≥300 chargebacks and ≥3.00% CTR

Assessments don't start the first month over threshold, they begin in the second month and escalate the longer you stay above the line. The exit is mechanical: fall below the ECM thresholds for three consecutive months and your status resets.

BRAM, Mastercard's brand risk and abuse monitoring program, is the content-and-conduct side. Effective January 1, 2026, merchants onboarded on or after that date require a mandatory content scan before their first transaction, and monitoring must cover the full website, including password-protected, gated, or member-only areas. If you operate a gated or members-only model, “behind the login” is no longer out of scope.

What happens if you cross the line

If you meet the Excessive Merchant definition, expect two things. First, remediation pressure from your acquirer, they'll require you to submit a chargeback mitigation plan and demonstrate you're reducing your ratio. Second, network enforcement fees assessed per disputed and fraudulent item. Industry sources put the Excessive Merchant fee at approximately $8 per fraudulent or disputed transaction; that figure comes from acquirer and industry guides rather than a public Visa document, so your acquirer's schedule governs.

The bigger risk is account instability. Exceeding VAMP thresholds is the single most common way a working high-risk account gets terminated. Once you're flagged, your acquirer is under pressure to bring you back under the line, and if you can't, the account is at risk regardless of how long you've been processing or how clean your model is. The chargeback thresholds explained guide breaks this down further.

How to stay under

The thresholds make the strategy obvious: manage disputes before they accumulate, because both networks are counting. In practice, that means two things, prevention and defense.

Prevention is fraud screening that stops disputes before they settle. Every transaction should run through AI risk scoring, velocity checks, device and behavioral signals, and patterns tuned to your vertical. For subscription businesses, the single most effective prevention tool is an easy, honest cancellation flow, cancellation friction converts customers into chargebacks, and every dispute pushes your ratio toward the line. A recognizable billing descriptor stops the “what's this charge from six months ago?” dispute that plagues travel and subscription merchants.

Defense is representment, assembling evidence to contest disputes that do come through. Timely representment, supported by delivery confirmation, terms of service, and communication records, wins back disputes that would otherwise count against your ratio. Good processors build both prevention and defense in rather than selling them as add-ons.

At GivePayments, every transaction runs through AI risk scoring tuned to each vertical's failure modes, and dispute tooling handles alerts and representment to keep merchants under the VAMP and ECM thresholds. The chargeback management page covers the full toolkit. If your ratio is creeping up and you want a processor that helps you manage it rather than freezing you when you cross a line, start a conversation.