Visa’s merchant chargeback threshold is 1.5% as of 1 April 2026, and its ratio counts issuer fraud reports plus disputes, not just your chargebacks. A store owner forwarded us an email from their payment processor. It mentioned their chargeback ratio, quoted a percentage, named a threshold, and asked for a response within thirty days.
They asked what any of it meant. They had the number sitting in front of them and no way to tell whether it was bad.
That’s the awkward thing about a chargeback ratio. It’s the number most likely to cost you your ability to take payments, and the explanations you’ll find are mostly written for merchants who already employ someone to watch it. Worse, a lot of them are now out of date. Here’s what the number actually measures, where the line sits today, and how to work yours out from data you already have.
What A Chargeback Ratio Actually Measures
In its simplest form, your chargeback ratio is the number of chargebacks you received in a month divided by the number of transactions you processed in that month, expressed as a percentage.
A chargeback is what happens when a cardholder disputes a payment with their bank rather than asking you for a refund. The bank pulls the money back, and your processor may charge you a fee on top.
Twelve chargebacks against a thousand orders is 1.2%. That arithmetic is straightforward and it’s what most people mean by the term.
Here’s the catch, and it’s the reason this article exists: the ratio your processor measures you against is probably not that number. It’s usually broader, and stores get caught out by the difference.
The Formula Your Processor Actually Uses
Visa measures merchants through the Visa Acquirer Monitoring Program, and its ratio combines two things rather than one.
According to Visa’s own programme fact sheet, the VAMP ratio is calculated as reported fraudulent transactions plus total disputes, divided by total settled transactions. Only card-not-present transactions count, which for a WooCommerce store is effectively everything.
The two inputs come from different places. Disputes are the chargebacks you already know about, because you saw the money leave. Fraud is reported separately by the card issuers, and you may never see those reports at all.
That second half is what surprises people. A transaction can be flagged as fraudulent by the issuing bank without ever becoming a chargeback against you, and it still counts toward your ratio.
So a store can track its own chargebacks diligently, calculate a comfortable-looking 0.8%, and be sitting somewhere quite different on the measure that actually triggers a letter.
What we’ve seen: the store owners who get blindsided are almost never careless. They’re the ones who track a number monthly and trust it. The problem is that they’re counting chargebacks, and the programme is counting fraud reports plus disputes. If you’re going to watch one figure, make sure it’s the one your processor is watching, and ask them which measure their notices are based on before you need to know.
Where The Line Sits, And When It Moved
This is where most of what you’ll read online is simply stale. The thresholds changed twice in twelve months.
Visa consolidated its older dispute and fraud monitoring programmes into VAMP, effective 1 April 2025. If you find a page referring to VDMP or VFMP as current, it predates that change.
Then the numbers themselves moved. According to the Merchant Risk Council, from 1 April 2026 the merchant Excessive threshold dropped from 2.2% to 1.5%, the monitoring floor moved from 1,000 to 1,500 combined fraud reports and disputes per month, and enforcement fees became $8 per disputed or fraudulent transaction with no grace period for merchants at Excessive.
The widely quoted 2.2% is therefore a superseded figure. Any guide still repeating it is telling you the line is further away than it is.
Here’s the current picture:
| Measure | Figure | Effective | Applies to |
|---|---|---|---|
| Merchant Excessive threshold | 1.5% | 1 April 2026 | you |
| Previous merchant Excessive threshold | 2.2% (superseded) | until 31 March 2026 | historical only |
| Monitoring floor | 1,500 combined fraud reports and disputes per month | 1 April 2026 | you |
| Enforcement fee at Excessive | $8 per disputed or fraudulent transaction | 1 April 2026 | you |
| Acquirer Above Standard / Excessive | 0.5% / 0.7% | since 1 April 2025 | your acquirer, not you |
Two things to read carefully there. The 0.5% and 0.7% figures get quoted at merchants constantly, and they aren’t merchant thresholds at all. They apply to acquirers, which is your payment provider rather than your store.
The monitoring floor matters just as much as the percentage. Below 1,500 combined events in a month you aren’t in scope, which means a small store can post an alarming percentage in a quiet month without anything happening. Percentages get unstable at low volumes, and the floor exists precisely because of that.
Mastercard runs its own separate programme with its own thresholds. Ask your processor which schemes they monitor you under rather than assuming the Visa numbers apply everywhere.
Pulling Your Own Numbers
You can’t see the issuer fraud reports, so you can’t calculate the full VAMP ratio yourself. What you can do is track the half you can see, and watch its direction.
Export your orders for the month with order number, date, status and total included. Count the disputed orders against the total order count for the same period. That gives you your own dispute rate, which is the floor of what the programme measures rather than the whole of it.
Then track it monthly. One month tells you almost nothing, because chargebacks arrive weeks after the orders that caused them and a single bad week distorts a small denominator. Three months of the same figure tells you a great deal.
Our guide to exporting WooCommerce orders covers pulling that data with the fields you need, and exporting orders to Excel is the easier route if you want to keep a running sheet month to month.
Keep the underlying export rather than just the percentage. When a processor asks about a specific period, having the orders themselves is the difference between a conversation and a scramble.
If You Are Already Near The Line
Triage by cause before you buy anything, because the three common patterns need completely different responses.
Disputes from customers who genuinely bought from you are post-purchase abuse. Nothing at the checkout catches those, because at the moment of purchase there was nothing wrong with the order. That’s a policy, evidence and dispute-response problem.
Bursts of small failed orders are automated card testing. That’s a volume problem, and it wants rate limiting and a challenge on the form rather than a list of names.
The third pattern is the same people coming back, and it’s the only one a block list addresses. If you’ve identified someone specific and want them stopped at the checkout without you watching for them, that’s what Checkout Guard does. It matches a blocked entry on customer name, email address or IP address at checkout. No risk scoring, no attempt to guess about strangers.
Be clear about what that does not do. It won’t affect a dispute you’re already in, and it does nothing about a first-time offender you’ve never seen. For working out which of the three patterns you actually have, our practical WooCommerce anti-fraud guide walks through both defensive approaches, and exporting your customer list is a faster way to spot repeat names than reading orders one at a time. Handling the disputes themselves sits inside your wider WooCommerce order management process.
Frequently Asked Questions
What is a good chargeback ratio?
Below the threshold you’re measured against, with room to spare. For Visa’s merchant programme that threshold is 1.5% as of 1 April 2026, down from 2.2%. Most healthy stores sit far below it. Treat anything above 1% as worth investigating rather than waiting for a letter, since the figure moves slowly and reacts late.
How do you calculate a chargeback ratio?
The simple version is chargebacks divided by transactions in the same month. The version Visa measures is broader: reported fraudulent transactions plus total disputes, divided by total settled card-not-present transactions. You can calculate the first from your own order data. You can’t fully calculate the second, because the fraud reports come from card issuers rather than from you.
What happens if my chargeback ratio is too high?
You enter a monitoring programme, and enforcement fees apply per disputed or fraudulent transaction, currently $8 with no grace period at the Excessive level. Your acquirer hears about it before you do, and sustained breaches put your ability to accept card payments at risk. The fees are the early warning rather than the real cost.
Is the chargeback ratio the same as the fraud rate?
No, and conflating them is the most common mistake here. A fraud rate counts transactions reported as fraudulent. A chargeback ratio counts disputes. Visa’s VAMP ratio deliberately combines both into one figure, which is why a store watching only its chargebacks can be measured higher than it expects.
How do I check my own chargeback ratio in WooCommerce?
Export your orders for the month, count disputed and refunded orders against the total, and track the result monthly rather than reading a single month. That gives you the dispute half of the picture. For the complete figure, ask your payment provider which measure their notices use, because they see the issuer fraud reports and you don’t.
Watch The Number Before Someone Else Does
The uncomfortable thing about this metric is that you’re the last to know. Your acquirer sees it first, the fees arrive second, and the letter arrives third.
That makes the small monthly habit worth more than any tool: pull the export, count the disputes, write the number down. Three months of that and you’ll spot a trend long before it becomes correspondence.
- What A Chargeback Ratio Actually Measures: start with the simple version
- The Formula Your Processor Actually Uses: fraud plus disputes, not just chargebacks
- Where The Line Sits, And When It Moved: 1.5%, not the 2.2% you’ll read elsewhere
- Pulling Your Own Numbers: export monthly and track the direction
- If You Are Already Near The Line: triage by cause before buying anything
If your chargeback ratio is being driven by the same names returning, a block list is the direct answer to that one pattern. See what it covers on the Checkout Guard page.
