Chargeback ratio calculator: how Visa and Mastercard work out your ratio

How do I calculate my chargeback ratio?

Use each network's own formula, because a single "chargebacks ÷ sales" number won't match what Visa or Mastercard sees. Merchants learn this the hard way: "One ugly Visa sale can count twice." (X post). Here are both methods.

How does Visa calculate the VAMP ratio?

It's a count, not dollars:

VAMP ratio = (fraud reports [TC40] + disputes [TC15]) ÷ settled transactions [TC05], per month, card-not-present only (Visa VAMP fact sheet)

• A sale that gets both a fraud report and a dispute counts twice.
• The fact sheet excludes disputes resolved through pre-dispute solutions, and fraud reports that qualify for Compelling Evidence 3.0 (same source).
• Thresholds: in the US, Canada, EU and Asia-Pacific, a merchant is "Excessive" at 1.5% (150 bps) or more and at least 1,500 fraud reports plus disputes in the month, since April 1, 2026. Visa flags the acquiring bank's whole portfolio from 0.5% (same source).

Example A (arithmetic, not a Visa example): 100,000 settled Visa CNP transactions, 1,000 fraud reports, 700 disputes. (1,000 + 700) ÷ 100,000 = 1.7%, with 1,700 events, which is over the 1,500 minimum. Excessive.

Example B: 2,000 transactions, 60 disputes, no fraud reports. 60 ÷ 2,000 = 3.0%, but only 60 events, so not "Excessive" under Visa's merchant minimum. Your processor will still act on 3%.

How does Mastercard calculate the chargeback ratio?

It compares this month's chargebacks with last month's sales:

Ratio (bps) = chargebacks in the current calendar month ÷ Mastercard transactions in the preceding month × 10,000 (Mastercard Security Rules and Procedures, Merchant Edition §8.3.1, Feb 11, 2025)

• Thresholds: Excessive Chargeback Merchant (ECM) is 100–299 chargebacks and 150–299 bps in a month; High Excessive (HECM) is 300+ chargebacks and 300+ bps (Mastercard ECM FAQ, via J.P. Morgan).
• Mastercard counts first-presentment chargebacks; winning one later doesn't remove it from the count (Mastercard AN 2968).
• A month with falling sales pushes the ratio up even if chargebacks stay flat, because the denominator is last month's transactions.

Example C (arithmetic): 6,000 Mastercard transactions in August, 120 chargebacks in September. 120 ÷ 6,000 × 10,000 = 200 bps (2.0%), with 120 chargebacks. That's inside the ECM band on both tests.

What chargeback rate gets you on the MATCH list?

MATCH reason code 04 uses its own three-month test. In Mastercard's words: "the aggregate number of Mastercard chargebacks over the previous three months exceeded 1.5% of its Mastercard sales Transactions in that month, and those chargebacks equaled or exceeded USD 5,000 in total" (SPME §11.14.1). Both parts must be true. → MATCH list

What spreadsheet formulas can I copy?

Put one month per row. Columns: A = month, B = Visa fraud reports (TC40), C = Visa disputes (TC15), D = Visa settled CNP transactions, E = Mastercard chargebacks this month, F = Mastercard transactions this month.

These mirror the published formulas and thresholds above. Your acquiring bank's reports are the official numbers; use this to see trouble coming.

Why is my processor's number different from mine?

Usually because it uses a different formula, period, or set of transactions. Common causes: mixing Visa and Mastercard, counting dollars instead of counts, using the same month's sales for Mastercard instead of the prior month's, counting card-present sales in a VAMP ratio, or including disputes that pre-dispute tools resolved. And your processor's own risk line is stricter than the networks' and usually not published. Ask for it.

What chargeback ratio is safe?

There's no published "safe" number; each bank sets its own. Two public reference points: Visa starts flagging an acquiring bank's whole portfolio at 0.5% (VAMP fact sheet), and the FTC's Paddle order defines a "High-Chargeback Client" as one over 0.9% with more than 75 chargebacks in a month, in any 2 of the past 6 months (FTC v. Paddle order). One merchant summed up the stakes: "The part that actually costs you long term isn't the 60 EUR, it's your dispute rate." (r/stripe). → Chargeback ratio thresholds

How do I bring the ratio down without breaking rules?

Lower the disputes, don't hide them. Ship before you charge (Visa Dispute Management Guidelines), make your descriptor recognizable, refund fast, and use Compelling Evidence 3.0 on repeat-customer fraud disputes (two or more prior undisputed transactions settled 120–365 days before the dispute, sharing at least two data elements such as device ID or IP address, per the same guidelines). Never split volume across accounts or descriptors: the FTC banned that "load balancing" in its Paddle order (same order), and Visa can charge USD 25,000 a month for altering data to circumvent its monitoring programs (Visa Core Rules §12.5.3.2, Apr 18, 2026).

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FAQ

What is the formula for chargeback ratio? For Visa VAMP: fraud reports plus disputes, divided by settled card-not-present transactions in the month. For Mastercard: this month's chargebacks divided by last month's transactions, times 10,000 for basis points.

Is the chargeback ratio based on dollars or counts? Counts, for both Visa VAMP and Mastercard's Excessive Chargeback program. MATCH code 04 adds a dollar test: at least US$5,000 in chargebacks.

Do won chargebacks count toward my ratio? For Mastercard, yes: first-presentment chargebacks count even if you win them later. For Visa VAMP, disputes resolved through pre-dispute solutions and fraud reports that qualify for Compelling Evidence 3.0 are excluded.

What is Visa's chargeback threshold in 2026? In the US, Canada, EU and Asia-Pacific, 1.5% with at least 1,500 fraud reports plus disputes in a month for card-not-present merchants, since April 1, 2026.

Why does my Mastercard ratio jump when sales drop? Because Mastercard divides this month's chargebacks by last month's transactions. A slow month followed by normal chargebacks raises the ratio.

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How Break Free Finance helps

We don't process payments. When you're ready to apply for a merchant account, we help you present your chargeback history honestly, with the monthly ratios and the fixes behind them, to banks that underwrite your industry, drawing on decades of relationships with 40+ financial institutions and solution providers. Talk to us. Every account is subject to the bank's underwriting; no approval is guaranteed.

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Sources (last checked October 10, 2026)

Every fact above comes from these documents, linked inline where used. Merchant quotes show how sellers describe the problem; they aren't used as evidence. The worked examples are our arithmetic.

• Visa Acquirer Monitoring Program fact sheet (2025)
• Visa Core Rules and Visa Product and Service Rules (Apr 18, 2026)
• Visa Dispute Management Guidelines for Merchants (2024)
• Mastercard Security Rules and Procedures, Merchant Edition (Feb 11, 2025): §8.3.1, §11.14.1
• Mastercard Excessive Chargeback Merchant program FAQ (via J.P. Morgan, Feb 2022)
• Mastercard AN 2968
• FTC v. Paddle, stipulated order (2025)
• Merchant quotes (language only): X and Reddit posts linked inline

General information, not legal or compliance advice.