What Is a Chargeback Ratio? Thresholds Explained

A chargeback ratio is the share of your card transactions that turn into chargebacks (and, for Visa, fraud reports) over a set period, usually one month. Card networks and acquiring banks use it to decide whether your business is healthy or headed for a monitoring program. This guide explains how each network calculates it, the current thresholds, a worked example, and a monthly checklist to keep your number low.

What is a chargeback ratio?

A chargeback happens when a cardholder disputes a charge with their card issuer and the issuer pulls the money back from the merchant. Your chargeback ratio expresses how often that happens compared with how many sales you process. It is usually shown as a percentage or in basis points (bps), where 100 bps equals 1%.

The basic formula looks simple:

Chargeback ratio = number of chargebacks ÷ number of transactions × 100

The details are where merchants get tripped up. Each network decides what goes in the top number, what goes in the bottom number, and which month each one comes from. That is why a business can look fine on its own spreadsheet and still get a warning letter from its processor.

Why the chargeback ratio matters to your merchant account

Your acquiring bank is financially responsible for the merchants it signs. Card networks also watch each acquirer’s overall portfolio, so a merchant with a rising ratio is a risk to the bank, not just to itself. When your number climbs, the usual responses are closer review, a rolling reserve on your payouts, stricter terms, or in serious cases closure of the account.

Underwriters also look at your chargeback history when you apply. A clean ratio is one of the strongest signals you can bring to a merchant account application, and a poor one is a common reason a business gets labeled higher risk.

How Visa calculates the chargeback ratio (VAMP)

In 2025, Visa folded its older dispute and fraud monitoring programs into a single program called the Visa Acquirer Monitoring Program, or VAMP. According to Visa’s VAMP fact sheet, the program updates took effect on June 1, 2025, with an advisory period that ended September 30, 2025.

The VAMP ratio works like this:

• Top number: the count of fraud reports filed by issuers (known as TC40s) plus the count of disputes (TC15s).
• Bottom number: the count of settled Visa transactions (TC05s).
• Exclusions: disputes resolved through Visa’s pre-dispute solutions, and fraud reports that qualify for Compelling Evidence 3.0, are left out.

The big change for merchants is that fraud reports now count even when the cardholder never files a formal dispute. A stolen card used on your checkout page can hurt your ratio twice: once when the issuer reports the fraud and again if a chargeback follows.

Visa VAMP thresholds for U.S. merchants

Visa’s fact sheet lists an “excessive” merchant level for the U.S. of a VAMP ratio of 220 bps (2.2%) or higher with at least 1,500 combined fraud reports and disputes in a month. Starting April 1, 2026, the U.S. ratio dropped to 150 bps (1.5%), with the same 1,500-count minimum (Visa).

Both conditions have to be met for Visa to identify a merchant as excessive. That count minimum means smaller businesses rarely hit the network’s merchant-level trigger. It does not mean small merchants are safe, because Visa also measures acquirers, and acquirers pass that pressure down to the merchants in their portfolio.

How Mastercard calculates the chargeback ratio

Mastercard runs its own Excessive Chargeback Program, described in its Security Rules and Procedures—Merchant Edition. It uses a chargeback-to-transaction ratio (CTR) with one important twist: it divides the chargebacks received in a calendar month by the number of sales transactions from the previous month.

Mastercard uses two tiers:

• Excessive Chargeback Merchant (ECM): at least 100 chargebacks in a calendar month and a CTR of 1.5% or more.
• High Excessive Chargeback Merchant (HECM): at least 300 chargebacks in a calendar month and a CTR of 3.0% or more.

The one-month lag matters most for seasonal and fast-changing businesses. If your sales drop after a holiday rush while chargebacks from that rush keep arriving, your ratio can jump even though nothing changed in how you operate. The reverse is also true: a big sales month does not dilute chargebacks until the following month.

Visa vs. Mastercard chargeback ratio: side-by-side

The chargeback ratio your processor watches

Network thresholds are the outer limit, not the comfort zone. Your merchant agreement may set its own chargeback limits, and acquirers often step in long before a network program would. They also look at trends. A ratio that doubles in two months gets attention even if it is still under 1%.

This is especially true in industries that underwriters already see as elevated risk. If you run a subscription or continuity business, sell supplements and nutraceuticals, or take bookings far in advance through travel and event sales, expect your processor to review your ratio closely from day one. Our guide on what makes a business high-risk explains why.

Worked example: calculating your chargeback ratio

Let’s use a simple online store to see how the same month can produce different numbers. These figures are made up to show the math.

Visa example

In May, the store settles 4,000 Visa transactions. It receives 30 Visa disputes, and issuers file 25 fraud reports. Two of the disputes were resolved through a pre-dispute tool, so they are excluded.

1. Count the top number: 28 disputes + 25 fraud reports = 53.
2. Divide by settled transactions: 53 ÷ 4,000 = 0.01325.
3. Convert: 0.01325 × 100 = 1.33%, or about 133 bps.

If the store only counted chargebacks, it would think its ratio was 0.7%. Counting fraud reports nearly doubles it. The store is below the 1,500-count trigger, but a 1.33% ratio is close enough to the 1.5% line that its acquirer would likely want a plan.

Mastercard example

The same store processed 9,000 Mastercard sales in April, but only 6,000 in May. In May, it received 110 Mastercard chargebacks.

1. Use the prior month’s sales as the denominator: 9,000 (April).
2. Divide: 110 ÷ 9,000 = 0.0122, or 1.22%.
3. Check the tiers: 110 chargebacks clears the 100-count minimum, but 1.22% is under 1.5%, so the store is not an ECM in May.

Now look ahead. If the store gets another 110 chargebacks in June, the denominator becomes May’s 6,000 sales. The ratio jumps to 1.83%, which meets both ECM conditions. Nothing about the store got worse. Its sales simply fell.

What raises a chargeback ratio?

Most chargebacks come from a short list of causes. Knowing which one drives your disputes tells you where to start.

• True fraud: stolen card numbers used on your site. Under VAMP, these can count as fraud reports even without a dispute.
• Unrecognized charges: the customer doesn’t recognize your billing descriptor and assumes fraud.
• Delivery problems: items that arrive late, damaged, or not at all.
• Subscription surprises: renewals customers forgot about or couldn’t easily cancel.
• Refund friction: hard-to-find refund policies or slow replies push customers to call their bank instead.

Cardholders have real legal rights here. The FTC explains that under the Fair Credit Billing Act, consumers can dispute billing errors, including charges for goods they didn’t accept or that weren’t delivered as agreed, if the issuer receives their letter within 60 days after the first bill showing the error was sent (FTC). Card network dispute windows are separate from that rule and can be longer, so assume a sale can turn into a chargeback for months after it settles.

How to lower your chargeback ratio: a monthly checklist

Use this checklist once a month. It focuses on the habits that keep both the top number low and your data accurate. For deeper tactics, see our guide on how to reduce payment processing chargebacks.

1. Calculate two ratios, not one. Track Visa (fraud + disputes ÷ settled sales) and Mastercard (chargebacks ÷ last month’s sales) separately.
2. Tag every chargeback by reason. Group them as fraud, not received, not as described, canceled subscription, or unrecognized.
3. Check your descriptor. Visa recommends using the business name customers know best for clearing and settlement (Visa). Add a support phone number or URL if your processor allows it.
4. Submit transactions promptly. Visa suggests sending transactions to your acquirer within one to five days, and only charging physical goods once they ship.
5. Make refunds easy to find. Show your refund and cancellation terms at checkout and on receipts. A refund costs less than a chargeback and does not count toward your ratio.
6. Send renewal reminders. For recurring billing, email customers before each renewal and give them a one-click cancel option.
7. Tighten fraud filters. Use AVS, CVV, and velocity rules in your payment gateway to stop stolen cards before they settle.
8. Use pre-dispute alerts where available. Disputes resolved through Visa’s pre-dispute solutions are excluded from the VAMP ratio.
9. Review trends, not just totals. Compare this month to the last three. Rising numbers deserve action even below any threshold.
10. Talk to your processor early. If a product launch, shipping delay, or sale spike may cause disputes, tell your account team before the numbers arrive.

If you want help putting these steps in place, our chargeback management service covers dispute monitoring, response workflows, and prevention.

Common chargeback ratio mistakes to avoid

• Counting only chargebacks you lost. Wins still count. A dispute you win in representment stays in the ratio.
• Ignoring fraud reports. Under VAMP, fraud reports count toward the ratio whether or not a dispute follows.
• Blending card brands. One combined ratio hides a problem on a single network.
• Forgetting the Mastercard lag. A slow month after a busy one can push your ratio up on its own.
• Splitting sales to dilute the ratio. Breaking one purchase into several small charges to inflate transaction counts is something processors treat as a serious violation and can cost you your account.

Related guides and next steps

• Disputes already piling up? See how Payment Circle chargeback management helps you respond and prevent repeats.
• In a higher-risk industry? Learn how high-risk merchant accounts are underwritten and priced.
• Worried about holds on your payouts? Read what a rolling reserve is and how it works.
• Want to know what underwriters review? Our guide to merchant account underwriting walks through it.
• Getting ready to apply? Use the merchant account approval checklist to gather your documents.

Chargeback ratio FAQs

What is a good chargeback ratio?

Lower is always better, and you should aim to stay well under the 1.5% network triggers. Your acquirer may set tighter limits in your merchant agreement, so check your contract for the exact number that applies to you.

Do refunds count toward my chargeback ratio?

No. A refund you issue yourself is not a chargeback. That is why a fast, visible refund process is one of the easiest ways to keep your ratio down.

Does winning a chargeback remove it from my ratio?

Generally, no. The dispute was still filed, so it still counts. Winning recovers the money, but only prevention, or resolving the issue before it becomes a formal dispute, keeps it out of the count.

How is the Visa VAMP ratio different from a chargeback ratio?

The VAMP ratio adds issuer fraud reports to disputes in the top number, then divides by settled transactions. A traditional chargeback ratio only counts chargebacks, so VAMP numbers often run higher for merchants with card-testing or stolen-card fraud.

What happens if my chargeback ratio is too high?

Your acquirer may ask for a remediation plan, add a reserve, or change your terms. If you meet a network’s excessive-merchant criteria, monitoring programs and network fees can apply, and continued problems can lead to account closure.

How often should I check my chargeback ratio?

At least monthly, since both Visa and Mastercard measure by month. High-volume or seasonal businesses benefit from a weekly look so they can catch spikes before the month closes.

Sources and further reading

• Visa: Visa Acquirer Monitoring Program (VAMP) Fact Sheet 2025
• Visa: Resolve disputes quickly, protect your business
• Mastercard: Security Rules and Procedures—Merchant Edition
• Federal Trade Commission: Using Credit Cards and Disputing Charges

Keep your chargeback ratio in check with Payment Circle

Payment Circle helps new U.S. online merchants set up merchant accounts with clear interchange-plus pricing, NMI or Authorize.net gateways, and tools to manage disputes from the start. Ready to get started? Apply for a merchant account, or contact our team or call (571) 274-7950 (9:00 AM to 6:00 PM Eastern).