Chargebacks are expensive enough as a one-off expense. When they start making up a bigger share of your ecommerce orders, you have a different problem on your hands.
That’s what your chargeback rate helps you see. It measures the percentage of transactions that result in chargebacks during a given period. That lets you know how often disputes are happening relative to your sales.
Calculating your rate is the easy part. You also need to know whether the number is healthy, why it’s climbing and what you can do about it.
TL;DR
- The chargeback rate shows the share of transactions that turn into chargebacks during a given period.
- For internal tracking, divide your chargebacks by transaction volume and multiply by 100 to calculate your chargeback rate.
- Your processor and card networks may calculate the metric differently, so their numbers may not match yours.
- As a general benchmark, aim to keep your chargeback rate below 1%.
- If your rate starts rising, find the source before changing your controls.
- You can lower your chargeback rate without sacrificing good sales by identifying fraud and abuse more precisely. Cymbiotika reduced chargebacks by 93% while reaching a 98% approval rate.
How do you calculate chargeback rate?
For a basic internal calculation, divide the number of chargebacks you received by the number of transactions you processed, then multiply by 100.
For example, say you processed 15,000 transactions and received 86 chargebacks. Your formula is: 86 ÷ 15,000 × 100 = 0.57%.
In this case, your chargeback rate is 0.57%.
Why reporting periods matter when calculating your chargeback rate
Chargebacks often arrive weeks or even months after the original purchase. That means the same dispute can fall into different reporting periods depending on how you track it.
You might calculate your rate using chargebacks received in January divided by transactions processed in January. Or you might group chargebacks by the date of the original transaction and calculate a rate for January purchases once those disputes come in.
Pick one method and use it consistently for your internal reporting. And don’t assume that number will match the rate your processor or card network reports.
Why doesn’t my chargeback rate match my processor’s?
If your spreadsheet says 0.57% and your processor dashboard says 0.65%, that doesn’t necessarily mean one calculation is wrong — they may simply be measuring different things.
| Factor | How it changes the reported rate |
| Reporting period | Your processor may use a different time window than your internal reporting, which can change the transaction count used in the denominator. |
| Card network | Your internal rate may include all card transactions, while Visa and Mastercard calculate their metrics using only transactions processed on their respective networks. |
| Transactions included | You may count every completed transaction, while a network metric uses a narrower group. The Visa Acquirer Monitoring Program (VAMP) ratio, for example, uses settled card-not-present (CNP) VisaNet transactions in its denominator. |
| Events included | Your internal rate may count only formal chargebacks. Some network metrics also count other events — like reported fraud — which can increase the numerator. |
| Pre-dispute resolutions | Some disputes resolved before reaching the standard chargeback process may count in one report and not another. |
Those differences become especially important when you’re comparing your rate with card-network monitoring thresholds. Your internal chargeback rate can help you spot a problem, but Visa, Mastercard and other networks use their own metrics to determine when activity warrants additional monitoring.
How card networks measure chargeback activity
Visa, Mastercard, American Express and Discover don’t use one universal chargeback-rate formula. Here’s how the major networks calculate or monitor the activity they use to evaluate merchant risk.
How does Visa calculate its VAMP ratio?
Visa monitors CNP fraud and disputes through VAMP.
According to the VAMP program fact sheet, the formula they use is:
VAMP ratio = [Fraud reports (TC40) + disputes (TC15)] ÷ settled transactions (TC05).
Visa excludes disputes resolved through qualifying pre-dispute solutions and TC40 fraud reports that qualify for Compelling Evidence 3.0, depending on when it pulls the data.
For merchants in the U.S., Canada, Europe and Asia-Pacific, Visa lowered its Excessive Merchant VAMP threshold to 1.5% on April 1, 2026. Merchants also need at least 1,500 combined monthly fraud and dispute events to meet the Excessive Merchant criteria.
How does Mastercard calculate its chargeback rate?
Mastercard’s Excessive Chargeback Program (ECP) uses a lagged reporting window.
Its Security Rules and Procedures — Merchant Edition defines the metric in basis points. It divides current-month chargebacks by the merchant’s Mastercard transactions from the preceding month, then multiplies by 10,000.
So, the formula is:
Mastercard chargeback rate = current-month chargebacks ÷ previous-month Mastercard transactions × 100.
Mastercard uses Excessive Chargeback Merchant (ECM) and High Excessive Chargeback Merchant (HECM) classifications within its Excessive Chargeback Program. Its current public rules direct acquirers to the Data Integrity Monitoring Program for the applicable thresholds rather than listing those thresholds in the Merchant Edition rules.
How do American Express and Discover monitor chargebacks?
Unlike Visa and Mastercard, American Express and Discover don’t provide comparable formulas in their current public merchant guidance.
Check the Amex rules that apply to your market and merchant account or contact your Amex representative for specific monitoring requirements and calculations. If you accept Discover, check your Discover Network requirements or ask your acquirer or processor which chargeback metrics and thresholds apply to your account.
How does your chargeback rate affect revenue?
A high chargeback rate can eat into revenue in several ways. When you lose a chargeback, you can lose the original sale and the merchandise or service provided, while also taking on the cost of handling the dispute.
Mastercard estimates merchants spend an average of $82 in internal costs and another $46 in third-party expenses for every chargeback, excluding the value of the lost goods or services.
What is considered a good chargeback rate in ecommerce?
As a general benchmark, aim to keep your chargeback rate below 1%. Staying below that mark gives you more room before disputes erode revenue, spark higher payment processor and gateway fees or push you toward card-network monitoring criteria.
Your historical rate gives you another benchmark. If your chargeback rate usually sits around 0.3% and jumps to 0.7%, you’re still below 1%, but the frequency of chargebacks has more than doubled.
What should you do if your chargeback rate is too high?
If your chargeback rate is rising or getting too close to a monitoring threshold, start with the data behind the number.
- Find out what’s driving the increase. Break down your chargebacks by type, reason code, product, market and sales channel. This helps you determine if the core problem is fraud, fulfillment, billing, customer service or friendly fraud/first-party misuse.
- Address the biggest source first. Match the response to the problem. If fraud or first-party misuse is driving chargebacks, review whether your current fraud controls are catching the right activity. If fulfillment, billing or customer service is behind the increase, focus your efforts there instead of adding more friction to every transaction. See our chargeback prevention guide for tactics tied to each source.
- Confirm where you stand with your processor or acquirer. If you’re approaching a card-network monitoring threshold: Verify the rate they’re tracking, the reporting period they use and if they expect any remediation steps from you.
- Check what’s happening to approvals. A lower chargeback rate can come at the expense of legitimate revenue if you get there by declining more good customers. Track merchant approval and false decline rates alongside chargebacks to make sure your controls are becoming more precise, not more restrictive. Solutions, like Signifyd’s Commerce Protection Platform, can help by using identity, payment, behavioral and network data to separate risky activity from legitimate purchases.
- Measure whether your changes are working. Keep tracking your overall chargeback rate and the categories driving it. If one type falls while another starts climbing, adjust accordingly — for example, refine fraud controls or fix recurring fulfillment issues.
Lower your chargeback rate without lowering approvals
Bringing your chargeback rate down shouldn’t mean turning away more good customers. If fraud is driving your rate higher, you need to get more precise about which transactions actually carry risk.
Signifyd’s Complete Chargeback Protection — within the Commerce Protection Platform — evaluates orders at checkout and backs approved orders with a financial guarantee against fraud and non-fraud chargebacks. Signifyd also challenges abusive claims, helping you reduce chargebacks without relying on stricter fraud controls across every transaction.
Cymbiotika offers a good example of what that balance can look like. After partnering with Signifyd, the retailer reached a 98% approval rate while reducing chargebacks by 93%.
FAQs
Does winning a chargeback lower your chargeback rate?
Usually, no. Winning a chargeback can recover the revenue, but the dispute may still count toward the rate your processor or card network tracks, depending on how that metric is calculated.
How often should you monitor your chargeback rate?
Review your chargeback rate at least monthly so you can more quickly spot increases and changing dispute patterns.
