One chargeback is a nuisance. A steady stream of them is a threat to your merchant account. Banks and card networks watch every business's dispute rate, and once it climbs past their limits, the consequences grow quickly.
Here is how the numbers work and what to do before it gets that far.
How your chargeback ratio is figured
Your chargeback ratio is the number of chargebacks in a month divided by the number of card transactions. The exact formula varies by network: some count this month's chargebacks against last month's sales, and Visa's current program counts fraud reports and disputes together.
A business with 400 card sales a month and 4 chargebacks has a 1% ratio. Small businesses feel this fastest, because a handful of disputes is a big share of a small number of sales.
1%
Where many processors start to worry
The card network monitoring programs
Visa and Mastercard each run programs that flag merchants with too many disputes. Thresholds change, so treat these as a rough guide and ask your processor for the current numbers:
- Mastercard's Excessive Chargeback Program generally flags a merchant at 100 or more chargebacks in a month and a ratio of 1.5% or higher, with a higher tier at 300 chargebacks and 3%.
- Visa's Acquirer Monitoring Program (VAMP) combines fraud reports and disputes into one ratio. In the U.S. its merchant threshold dropped to 1.5% in April 2026 for merchants with enough monthly disputes to qualify.
- Your processor's own limits are usually lower than the networks'. Many will review an account well before the network programs would ever flag it.
Figures above are from processor and acquirer documents summarizing the card network rules as of October 2026. The networks' own rules are the final word, and they change.
What happens when you go over
- Warnings and a request for a plan to bring the ratio down.
- Monthly fines from the card networks, which your processor passes on to you.
- A reserve: your processor holds back part of your deposits for months in case more chargebacks come in.
- Higher fees or a move to high-risk pricing.
- A closed account. A processor that closes an account for excessive chargebacks can add the business to Mastercard's MATCH list, which other processors check for five years.
How to bring your chargebacks down
- Find out why. Sort your last few months of chargebacks by reason code. Usually one or two causes make up most of them.
- Fix the name on customer statements. "I don't recognize this charge" disputes drop when the name matches what customers call you.
- Dip or tap cards in person instead of typing numbers in. Card-present sales are much harder to dispute as fraud.
- Make your refund and cancellation policy clear at checkout, on receipts and on your website.
- Make refunds easy. Answer the phone and messages fast. A customer who gets a refund from you does not call their bank.
- For recurring billing, send a reminder before each charge and make cancelling simple.
- Ask your processor about dispute alerts, which can warn you before some disputes become chargebacks so you can refund first.
Already flagged or closed?
If a processor has already closed your account or holds a reserve, you still have options. Some processors specialize in businesses with a chargeback history, as long as you can show what caused it and what you changed. Bring that plan with you when you apply.
RelatedWhat is a high-risk merchant account?Hard-to-place merchant services
Common questions
What is a good chargeback ratio?
As low as you can keep it, and well under 1% of your transactions. Most well-run small businesses see only a few chargebacks a year.
Can a processor close my account for too many chargebacks?
Yes. Your merchant agreement lets the processor close or restrict the account, and excessive chargebacks are one of the most common reasons. They may also hold a reserve from your deposits.
What is the MATCH list?
It is a Mastercard database of businesses whose accounts were closed for certain reasons, excessive chargebacks among them. Processors check it when you apply. A listing generally stays for five years, and it makes getting a regular account much harder.
Do chargebacks I win still count against me?
Often yes. Many ratios count disputes when they are filed, not when they are decided. That is why preventing chargebacks matters more than winning them.