Understanding Mastercard’s New Scam Monitoring Requirements

Understanding Mastercard’s New Scam
Monitoring Requirements

As fraud and scam activity continue to evolve across the payments ecosystem, Mastercard is introducing enhanced monitoring standards designed to help identify and prevent scam-related merchant activity before it can cause significant harm to consumers, issuers, and the payments industry.

Effective July 24, 2026, Mastercard will require acquiring banks, payment processors, and payment facilitators to implement additional monitoring and investigation procedures for merchants that exhibit characteristics commonly associated with scam activity.

The payments industry has experienced a growing number of scams that can be difficult to detect through traditional fraud monitoring methods. While many businesses operate responsibly, scammers often use legitimate-looking websites, advertisements, and payment acceptance channels to deceive consumers.

Mastercard’s revised standards are intended to strengthen oversight, improve consumer protection, and ensure that acquiring institutions can quickly identify potentially harmful activity before it impacts larger numbers of cardholders.

A scam merchant is generally a business that uses deceptive practices to persuade consumers to make purchases, subscriptions, investments, or other payments under false or misleading circumstances.

Examples may include:

  • Misleading subscription offers
  • Investment or cryptocurrency scams
  • Fake product or service websites
  • Deceptive trial offers
  • Businesses using false advertising or misrepresentation to obtain payments

The new standards focus on identifying unusual transaction behavior that may indicate these types of activities.

Mastercard already requires ongoing merchant monitoring, but the revised standards introduce additional triggers that may require a formal investigation.

Some examples include:

  • Sudden increases in chargebacks or refund activity
  • Significant drops in authorization approval rates
  • Reports from card issuers indicating potential scam activity
  • Alerts from approved monitoring services
  • Transaction activity that appears inconsistent with the merchant’s stated business model

For newly boarded merchants, special attention will be given to refund and chargeback activity during the first six months of processing.

For legitimate businesses, these changes should have minimal operational impact.

However, merchants should be prepared to provide additional information if unusual activity is detected. This may include:

  • Clarification regarding business practices
  • Marketing materials and advertisements
  • Customer service procedures
  • Refund policies
  • Evidence supporting product or service delivery

Maintaining transparent business practices and responding promptly to information requests can help avoid unnecessary disruptions.

To minimize risk and maintain a healthy processing relationship, merchants should:

  • Clearly disclose products, pricing, and subscription terms
  • Maintain responsive customer service channels
  • Process refunds promptly when appropriate
  • Monitor chargeback activity closely
  • Ensure advertising accurately reflects products and services offered
  • Review website disclosures and terms regularly

Merchants with strong operational controls and transparent customer communications are generally far less likely to encounter issues under Mastercard’s monitoring programs.

At Viking, we continuously monitor regulatory and card brand developments to help protect both our merchants and sponsoring financial institutions.

Our compliance, underwriting, and risk teams work closely with merchants to identify potential concerns early, provide guidance when needed, and ensure that businesses remain aligned with Mastercard and Visa requirements.

These new standards represent another step toward creating a safer and more trustworthy payments ecosystem for merchants, consumers, processors, and financial institutions alike.

If you have questions regarding Mastercard’s revised scam merchant monitoring requirements or how they may impact your business, please contact your Viking representative today.entation, our team is ready to assist. reach out to your Viking representative today.

June 2, 2026

About Robert Hollifield

He is an accomplished director with 15 years of experience in underwriting, risk management, and compliance in the payments space. He specializes in high-risk merchant oversight, regulatory adherence, and improving end-to-end payment processes to ensure secure, reliable operations. He received his BS from the University of New Hampshire.

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Understanding VISA VAMP

Understanding VISA VAMP

Visa’s Acquirer Monitoring Program, known as VAMP, is a global compliance and risk oversight framework designed to ensure that acquirers, payment processors, and merchants operate safely, consistently, and in alignment with Visa’s rules. VAMP helps protect the payments ecosystem by reducing fraud, monitoring unusual or high-risk activity, and confirming that underwriting and portfolio management practices remain strong.

VAMP is not a penalty program. It does not function the way Visa’s dispute monitoring programs work. Instead, it is a structured method for Visa to confirm that acquirers have appropriate controls, documentation, and oversight in place. When Visa detects elevated dispute activity, irregular transaction patterns, outdated merchant files, or missing documentation, it may request clarification or remediation. The goal is to improve stability across the network and prevent issues before they impact merchants.

VAMP was developed in response to increased fraud trends, evolving digital payment behaviors, and growing regulatory expectations worldwide. Visa is placing greater emphasis on the accuracy of merchant onboarding, the completeness of underwriting files, the use of correct MCCs, and the ongoing monitoring of merchant portfolios. By strengthening these areas, Visa helps acquirers prevent unauthorized activity, reduce misuse of merchant accounts, and ensure that high-risk behaviors are detected early.

For most merchants, VAMP requires little to no direct action. Visa’s inquiries flow to the acquirer and processor, not to individual merchants. Your processing continues without interruption. In some situations Viking may reach out for small updates such as a current business license, ownership verification, a website review, or a clarification about your products and services. These requests are simple, quick, and designed solely to maintain alignment with Visa’s guidelines.

Viking is approaching VAMP with a proactive, portfolio-wide strategy that protects merchants and strengthens long-term processing reliability. Our compliance, underwriting, and risk teams have expanded documentation standards, improved MCC accuracy, and upgraded identity, KYB, and bank-account verification tools. We have also enhanced transactional monitoring to identify early indicators of fraud or unusual behavior across the portfolio.

In partnership with our sponsor banks, Viking has increased transparency through improved reporting, updated merchant files, and ongoing communication around risk trends. This allows potential concerns to be addressed early and keeps merchant processing stable and uninterrupted.

  • Earlier fraud and dispute monitoring thresholds with automated pattern detection
  • Comprehensive audits of all merchant underwriting files to confirm Visa and bank compliance
  • Updated training for onboarding, underwriting, and compliance teams
  • Deployment of advanced KYB and KYC tools to reduce onboarding risk
  • Continuous policy updates to match Visa and sponsor-bank expectations
  • Strengthening of MCC classification and merchant data accuracy
  • Portfolio-wide merchant reviews to ensure proper business information and operational descriptions

A stronger compliance and monitoring environment reduces fraud, lowers dispute exposure, improves portfolio health, and helps preserve long-term access to card processing. Merchants benefit from:

  • Continued, uninterrupted processing
  • Faster identification of operational issues or fraud patterns
  • Fewer unexpected disputes and chargebacks from upstream problems
  • A more secure environment for accepting Visa cards
  • A more stable relationship between Viking, our sponsor banks, and the Visa network

For most merchants nothing will change. From time to time Viking may request updated documentation to ensure your file remains compliant. These requests are routine and typically take only a few minutes to complete. Payment processing continues as normal and real-time funding through VIKExpress is unaffected.

Viking is committed to making the VAMP process seamless and supportive. Every action taken under VAMP is designed to strengthen merchant protections, maintain high-quality bank relationships, and ensure long-term access to secure payment processing. If you have questions or need help with any compliance documentation, our team is ready to assist. reach out to your Viking representative today.

December 1, 2025

About Robert Hollifield

He is an accomplished director with 15 years of experience in underwriting, risk management, and compliance in the payments space. He specializes in high-risk merchant oversight, regulatory adherence, and improving end-to-end payment processes to ensure secure, reliable operations. He received his BS from the University of New Hampshire.

Bigger Possibilities Await.

Contact Us


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