Visa’s new VAMP program changes the way merchants think about chargebacks. Previously, there was no connection between chargebacks, fraud, and disputes. Under the VAMP program, these three issues are directly connected, and problems in one area will impact the merchant account.
VAMP stands for Visa Acquirer Monitoring Program. This program encompasses Visa’s fraud and dispute monitoring programs and replaces the Visa Dispute Monitoring Program and the Visa Fraud Monitoring Program. The goal of the VAMP program is to measure the number of chargebacks, disputes, and fraudulent transactions that merchants and acquirers experience over a given period.
Why Merchants Need Chargeback Reduction Strategies Under VAMP
The biggest change under VAMP is how Visa measures risk. The VAMP ratio is the number of fraud, non-fraud chargebacks, and disputes divided by the total number of settled Visa transactions. Essentially, Visa is looking at fraud, chargebacks, and disputes.
Many merchants handle chargebacks long after the transaction is complete. Often, merchants have to wait until the customer initiates the chargeback process before responding and attempting to identify the root cause of the chargeback. Under VAMP, however, merchants will have to address problems before they escalate into Visa fraud reports, disputes, and chargebacks.
The issue of first-party misuse makes this even more difficult for merchants. According to Visa Acceptance Solutions’ 2026 Global eCommerce Payments & Fraud Report, 64% of merchants have seen an increase in first-party misuse of their services and products, also known as friendly fraud. This creates problems for merchants because customers can recognize when they made the purchase, but still initiate a chargeback dispute and use their bank’s dispute process rather than contacting the merchant.
Who Needs to Reduce Chargebacks Under VAMP
This guide will be most useful for merchants in the following categories:
- High-risk merchants
- Ecommerce businesses
- Subscription and continuity merchants
- Digital goods sellers
- CBD, nutraceutical, vape and regulated product merchants
- Adult, dating and gaming merchants
- Travel and future delivery businesses
- Online course and membership businesses
- Merchants with high levels of chargebacks, dispute, reserves and warnings from their payment processor
- Merchants that want to avoid account termination by their payment processor
The more dependent your business is on card-not-present sales, recurring sales, high-value sales, sales from paid traffic or affiliates, or regulated products, the more important it is that you understand how to use VAMP to your advantage. As a merchant in any of these categories, you are at a higher risk of encountering the factors that impact your VAMP ratio.
Understanding VAMP Metrics and Chargeback Risk
VAMP can feel confusing because it introduces several related terms. The important point is that each metric provides the processor with information about merchant risk.
| VAMP Term | Plain-English Meaning | Why It Matters |
|---|---|---|
| VAMP | Visa’s combined fraud and dispute monitoring program | Replaces older separate Visa fraud and chargeback monitoring programs |
| VAMP Ratio | Fraud plus non-fraud disputes divided by total settled Visa transactions | Shows whether fraud and disputes are too high relative to volume |
| TC40 | Visa’s fraud report record | A fraud report can affect the merchant’s risk profile even before a normal chargeback workflow |
| TC15 | Visa’s dispute or chargeback record | Customer disputes count toward the broader VAMP risk picture |
| Enumeration Attack | Bot-driven card testing on a checkout page | Can create large volumes of suspicious authorization attempts |
| Enumeration Ratio | Enumerated attempts divided by total transaction attempts | Measures whether card-testing activity is too high |
| VAAI | Visa Account Attack Intelligence, the score Visa uses to flag enumeration | Helps Visa identify card-testing patterns |
| Above Standard / Excessive | Visa warning tiers that trigger fees and scrutiny | Signals that the merchant or acquirer needs stronger risk controls |
For merchants, the practical takeaway is simple: chargeback prevention now has to include fraud prevention, pre-dispute tools, bot protection and ratio monitoring. A merchant that only responds to formal chargebacks is already late.
Chargeback Prevention Tools and Providers Explained
The right VAMP strategy usually combines processor guidance, fraud tools, pre-dispute alerts, customer-service workflows and reporting. No single tool solves the entire problem.
| Provider or Tool | Best Fit | Key Strength | Main Tradeoff |
|---|---|---|---|
| Payment Nerds | High-risk merchants that need VAMP-aware payment strategy and account stability | Helps with high-risk underwriting, proactive ratio monitoring, Verifi, Ethoca, 3DS, chargeback prevention, fraud controls and processor-fit guidance | More consultative than a standalone software tool |
| Verifi | Merchants that need Visa-focused pre-dispute and dispute resolution tools | Helps resolve disputes before they become chargebacks through tools like RDR and CDRN | Works best when rules and refund workflows are configured carefully |
| Ethoca Alerts | Merchants that need early issuer alerts for fraud and disputes | Gives merchants faster notice so they can refund, stop fulfillment, or investigate | Does not replace root-cause chargeback prevention |
| Chargebacks911 | Merchants that need chargeback operations, analytics and representment support | Strong fit for organized dispute management and chargeback reduction workflows | May be more service-heavy than smaller merchants need |
| Stripe Radar and Billing Recovery Tools | Lower-risk ecommerce, SaaS and subscription merchants using Stripe | Built-in fraud scoring, checkout optimization and payment recovery tools | Not a substitute for high-risk merchant account support |
| 3DS Tools Through Gateway or Processor | Merchants with higher-risk card-not-present transactions | Adds issuer authentication and can reduce fraud exposure | Poor setup can add checkout friction |
These are fit-based comparisons, not universal rankings. A high-risk subscription merchant needs a different VAMP strategy than a B2B ecommerce seller, a travel business, a digital goods store, or a regulated-product merchant.
What VAMP Means for High-Risk Merchants
VAMP will have the most impact on merchants that already experience high rates of disputes and fraud. High-risk industries include subscriptions, CBD, nutraceuticals, vape products, adult dating, gaming, travel, and more.
Importantly, VAMP also monitors the acquirers of those merchants. As such, the acquiring bank has an incentive to avoid merchants that pose a high risk of increasing its risk. In other words, they could begin implementing policies such as higher reserves, growth plan requests, remediation plans, or even close their accounts with merchants before the merchant becomes aware of the issue.
For Payment Nerds, this means that high-risk merchants need more than just a payment processor to approve their transactions. Instead, they require a processor or payments company to work with them to ensure they remain approved under VAMP’s new regulations.
How Merchants Can Build a VAMP Chargeback Reduction Plan
Start by separating chargebacks into root-cause groups. Fraud, friendly fraud, product dissatisfaction, subscription confusion, fulfillment problems, refund delays, policy abuse and descriptor confusion all need different fixes.
Then build a plan around the biggest drivers:
- monitor VAMP ratio trends weekly
- track TC40 fraud reports and TC15 disputes
- review disputes by source, product, campaign and billing type
- add Verifi and Ethoca where dispute volume justifies it
- use 3DS for higher-risk transactions
- tighten fraud filters without creating unnecessary false declines
- improve refund and cancellation paths
- document fulfillment, access, service delivery and customer support
- monitor enumeration attacks and failed authorization spikes
- review performance with the processor before the account is flagged
The plan should be practical enough for teams to follow. A long policy document will not help if support, fraud, billing and operations teams do not know what to do when disputes start rising.
VAMP Chargeback Reduction Costs Explained
The costs of chargeback reduction will differ for each merchant based on their risk, volume, and the chargeback reduction provider of tools and services they choose to implement.
The costs to merchants include the purchase of fraud detection tools, 3DS tools, chargeback alert systems, dispute management systems, representment companies, gateway rules, monitoring systems, and staff.
The better question is: what does the merchant lose from unmanaged chargebacks? The lost revenue, fees, the strain on the merchant’s operations, and the cost of VAMP and potential merchant account termination could far exceed the cost of implementing these tools. For merchants with high risk levels, the cost of VAMP tools will be less than the cost of losing their merchant or being forced to migrate their business.
Finally, there is also the opportunity cost of not implementing these tools. By preventing chargebacks, merchants can keep their revenue, reduce strain on their support departments, and make it easier to work with their acquiring bank. This factor alone may be more important than the few basis points saved on processing fees.
Common VAMP Chargeback Mistakes to Avoid
The first mistake is treating it like a chargeback response program. This is much broader than chargeback responses. There are fraud and non-fraud chargebacks, as well as enumeration monitoring for card testing.
The second mistake is thinking one tool will solve the problem. Using Verifi, Ethoca, 3DS, fraud filters, and representment software is great, but it’s not enough if the merchant doesn’t also fix their billing language, refund policy, support hours, and product expectations.
The third mistake is waiting for the processor to escalate the account. Above Standard and Excessive are the two Visa warning signs that involve potential fees and increased scrutiny of the merchant’s account. If merchants did not notice the ratio movement early, they may be at risk of an account review or even closure by the processor.
Best Strategies to Reduce Chargebacks Under VAMP
Monitor the VAMP Ratio Weekly
Do not wait until your processor’s monthly statement to understand the VAMP ratio for your accounts. The VAMP ratio includes both fraud and non-fraud chargebacks; therefore, a spike in one or the other can indicate an issue that merchants should address. By monitoring the VAMP ratio each week by card brand and different categories (product, campaign, affiliate, subscription plan, payment page and customer segment), merchants can better understand whether the issue with chargebacks is widespread or isolated to one source. This will help them fix the root of the problem, rather than treating VAMP chargebacks as a general issue.
Use Verifi and Ethoca Before Disputes Become Chargebacks
There are several tools merchants can use before any customer dispute becomes a chargeback. Verifi, a company that works with Visa, offers tools like Rapid Dispute Resolution and the Cardholder Dispute Resolution Network (CDRN) that can help resolve customer disputes before they become formal chargebacks. Ethoca Alerts allows merchants to see in near real time any chargeback or fraud data from their customers’ bank issuers to either refund them or stop providing the product or service to customers involved in the dispute. While these tools will not eliminate the need for great customer service, they will limit the number of disputes that become formal chargebacks. Note that any chargebacks resolved with these tools may or may not be counted within a merchant’s VAMP ratio, depending on the company’s policy.
Improve Refund and Cancellation Workflows
Chargebacks occur when customers cannot cancel a purchase or cannot find a way to request a refund from the merchant. This can happen if customers do not understand return policies, cannot find support departments or have not found a way to cancel their purchases. Merchants should work to make the refund and cancellation process easy for customers, especially those in higher-risk categories like subscriptions, digital products, travel, coaching, dating, adult and nutraceuticals industries. While offering fast customer support and easy cancellation may cost merchants money, it will save them money in the long run relative to the cost of chargebacks, VAMP ratios and processor investigations.
Strengthen Fraud Screening and 3DS
Because VAMP includes both fraud and chargebacks, fighting fraud will go a long way to fighting chargebacks. Merchants can improve fraud prevention by using AVS (address verification system), CVV (card verification value), device checking, IP address velocity rules, fraud scoring software and risk-based 3DS implementations where appropriate. 3D Secure, or 3DS, requires customers to authenticate their purchase with their bank to help ensure that they are the individuals who are making the purchase. While 3DS can be helpful for merchants in reducing fraudulent purchases, it should not be used in every transaction. The goal is to use 3DS for higher-risk purchases only.
Stop Enumeration Attacks at Checkout
Enumeration attacks can occur on every checkout page that merchants build for their customers. These attacks involve bots purchasing products from merchants with stolen credit card data or guessing at the customer’s data. Visa keeps track of the number of enumeration attacks merchants face through its enumeration ratio, which calculates the number of suspected card testing purchases to the total number of purchases merchants receive. Merchants can use velocity controls, CAPTCHA software, bot detection software, blocked IP address or BIN (bank identification number) rules and checkout throttling to prevent enumeration attacks. Visa’s VAAI software can also detect enumeration attacks, so merchants should treat any card testing at their checkout processes as a problem for their processors, not their fraud departments.
Build Better Dispute Evidence
There will be instances when merchants will face chargeback disputes. These will not go away with the improved fraud prevention techniques and the better control of enumeration attacks at checkout. When chargebacks occur, merchants should have better evidence ready to prove the transaction or delivery of products or services to customers. While the kind of evidence needed will be dependent on the specific business model of merchants, in general, merchants should be able to provide order confirmations, delivery records, login history, download logs, signed agreements, support tickets, refund correspondence, cancellation records, IP address, device data and customer communication records. The goal in any business is to make the transaction as easy for customers to understand and defend as possible.
FAQs About Reducing Chargebacks Under VAMP
Q: What is VAMP?
A: Visa has a program called VAMP, which combines its two previous programs that dealt with fraud and chargebacks. VAMP replaced those two separate programs for merchants, allowing them to manage fraud and chargeback reports together.
Q: What is the VAMP ratio?
A: The VAMP ratio is the number of fraudulent and non-fraud charged returns divided by the total number of Visa transactions that were settled by merchants. The ratio allows merchants to compare the number of chargebacks they have with their total Visa sales.
Q: What are VAMP chargebacks?
A: VAMP chargebacks are a term that refers to the number of disputes that have merchants under VAMP. Visa counts these as all TC15 disputes (disputes and chargebacks for Visa) and TC40 fraud reports.
Q: What are the best strategies to reduce chargebacks under VAMP?
A: Some of the best strategies for merchants to reduce chargebacks under VAMP include monitoring their VAMP ratios on a weekly basis, using Verifi and Ethoca alerts for potential chargebacks, improving their chargeback and cancellation policies, using fraud filters to reduce fraudulent transactions, using 3DS for transactions with a higher potential for fraud, and documenting all chargebacks that happen to them.
Q: What is an enumeration attack?
A: An enumeration attack is initiated by bots to test the cards that are entering a merchant’s checkout page. These bots are attempting to use stolen and guessed-at credit card numbers and details to purchase products at the merchant’s website. Visa uses the enumeration ratio to track how many of these attacks occur relative to the total number of transactions merchants process.
Q: What do Above Standard and Excessive mean under VAMP?
A: If a merchant is classified as Above Standard or Excessive under VAMP, that means they have a higher-than-normal ratio of charged returns, fraud, or enumeration attacks. These statuses reflect the health of the merchant’s VAMP account, and high rates of these issues may result in penalties being imposed.
Q: How can Payment Nerds help merchants under VAMP?
A: Payment Nerds can assist merchants under VAMP by evaluating their VAMP ratio, implementing software and tools to help reduce chargebacks for them, monitoring their VAMP ratios, using Verifi, Ethoca, and 3DS platforms as necessary for them, and formulating a payment strategy that will allow merchants to maintain more stable transaction rates.
Conclusion
Reducing chargebacks under VAMP requires more than fighting disputes. Effective management of fraud reports, chargeback disputes, refunds, subscription agreements, charge testing, and chargeback evidence is necessary to curate a healthier merchant account.
If your business needs strategies to reduce chargebacks under VAMP, Payment Nerds can provide you with the information and tools to manage your chargebacks more effectively. It’s not about reducing chargebacks as much as it is about curating a healthier merchant account that can remain active under VAMP.
Sources
- Payment Nerds. “Chargeback Ratio Thresholds Explained.” Accessed May 2026.
- Payment Nerds. “How to Avoid Merchant Account Termination in High-Risk Verticals.” Accessed May 2026.
- Payment Nerds. “Why High-Risk Merchants Face Higher Chargeback Ratios.” Accessed May 2026.
- Visa. “Visa Acquirer Monitoring Program Fact Sheet.” Accessed May 2026.
- Visa. “Visa Account Attack Intelligence Score.” Accessed May 2026.
- Visa Acceptance Solutions. “2026 Global eCommerce Payments & Fraud Report.” Accessed May 2026.
- Verifi. “Resolve Pre-Disputes Automatically.” Accessed May 2026.
- Visa. “Resolve Chargebacks with Unified Dispute Management.” Accessed May 2026.
- Ethoca. “Ethoca Alerts.” Accessed May 2026.
- Ethoca. “Prevent Chargebacks.” Accessed May 2026.
- Chargebacks911. “Chargeback Management.” Accessed May 2026.
- Chargebacks911. “Chargeback Stats: Key Dispute Data Points.” Accessed May 2026.
- Stripe. “3D Secure 101.” Accessed May 2026.
- PCI Security Standards Council. “Merchant Resources.” Accessed May 2026.
