Merchant Category Codes (MCC): UK Guide & High-Risk MCC Reference

A Merchant Category Code (MCC) is a four-digit code used within card payments to classify the type of business a merchant operates.

Your MCC can affect how card transactions are processed and can be relevant to:

• merchant-account underwriting;
• payment-provider risk appetite;
• card-scheme requirements;
• interchange and transaction treatment;
• fraud and dispute monitoring;
• industry-specific payment rules; and
• how an acquiring bank understands your business.

But an MCC is not, on its own, a universal measure of whether a business is high risk.

Visa and Mastercard maintain merchant-category classifications, and Visa specifically identifies certain MCCs and transactions as High-Integrity Risk. Individual payment providers and acquiring banks can then apply their own underwriting policies and risk appetite.

This means two merchants with the same MCC can receive very different underwriting decisions depending on their transaction values, processing history, chargebacks, fulfilment model, geography, financial position and the provider they apply to.

This guide explains what an MCC is, who assigns it, which current Visa MCCs are classified as High-Integrity Risk, why some other merchant categories can require specialist underwriting, and what UK businesses should do if their MCC is affecting payment-provider acceptance.

Key Takeaways

• MCC stands for Merchant Category Code.
• An MCC is normally a four-digit code used to classify the merchant's principal business activity.
• The code is used within card-payment infrastructure rather than being the same as a UK Companies House SIC code.
• Visa states that acquirers and their agents are responsible for assigning the correct MCC to merchants.
• Mastercard also maintains a current list of acceptor business codes, commonly referred to as MCCs.
• Your MCC can influence underwriting, risk management, card-scheme requirements and transaction treatment.
• An MCC does not tell an acquirer everything it needs to know about merchant risk.
• There is no single universal list of MCCs that every UK payment provider automatically declines.
• Visa does, however, formally classify certain MCCs and transactions as High-Integrity Risk.
• Visa's April 2026 list includes categories relating to drugs/pharmacies, outbound telemarketing, adult content, cigars in certain circumstances, dating/escort services and gambling.
• Additional card-absent activity can fall into Visa's High-Integrity Risk framework in areas including certain financial trading, negative-option subscriptions, skilled-game wagering, cryptocurrency and cyber-locker/file-sharing activity.
• Some sectors commonly receiving specialist acquiring review, such as travel, ticketing and future-delivery businesses, are not necessarily Visa High-Integrity Risk MCCs.
• A merchant can have more than one MCC in certain circumstances.
• Visa specifically provides rules for mandatory and optional multiple MCCs.
• A wrong or overly generic MCC can create processing, compliance or underwriting problems.
• If your business has several revenue streams, the correct MCC may depend on how those activities are structured and where sales volume originates.
• Provider acceptance should therefore be based on MCC + business model + actual merchant risk + provider appetite, not MCC alone.

Find Your New Processor

What Is a Merchant Category Code?

A Merchant Category Code is a four-digit number used within the card-payment ecosystem to describe a merchant's business activity.

For example, different MCCs exist for businesses including:

• hotels;
• restaurants;
• travel agencies;
• pharmacies;
• professional services;
• retailers;
• financial services;
• subscriptions;
• gambling;
• digital goods; and
• many other merchant categories.

Visa's April 2026 Merchant Data Standards Manual describes an MCC as a four-digit number assigned to describe the merchant's primary business, generally based on the activity generating the highest annual sales volume.

Visa says MCC information is used for purposes including:

• activity tracking;
• reporting; and
• risk management.

Mastercard uses the term acceptor business codes (MCCs) and maintains a comprehensive merchant-category listing within its merchant reference documentation.

MAS View

Your MCC tells the payments ecosystem what type of merchant you are.

It does not, by itself, tell an underwriter whether you are a good or bad risk.

An MCC can influence how a payment provider initially assesses a business, but the code alone does not determine whether a merchant will be treated as high risk. See High-Risk vs Low-Risk Merchant Accounts for the wider underwriting factors providers may consider.

An MCC can influence how an acquiring bank or payment provider assesses a business, but it is only one part of the underwriting process. Our High-Risk Merchant Accounts guide explains the wider factors providers consider when assessing specialist and higher-risk merchants.

Who Assigns a Merchant's MCC?

The merchant does not normally simply choose whichever MCC it prefers.

Visa states that:

acquirers and their agents are responsible for assigning the correct MCC to each merchant.

The general rule is to select the code that most accurately reflects the merchant's business.

For most merchants this will reflect the principal business activity.

Payment facilitators also have responsibilities when assigning merchant categories to sponsored merchants.

Visa's April 2026 standards state that a payment facilitator should evaluate the business of each sponsored merchant and assign the MCC most appropriate to that merchant's activity.

MAS View

Do not choose a payment provider simply because it is willing to place you under a more convenient MCC.

The code should accurately represent the business and transaction being processed.

How Do I Find My Merchant Category Code?

If you already process card payments, your current payment provider or acquiring bank should be able to confirm the MCC associated with your merchant account.

If you are applying for a new merchant account, describe your business accurately rather than trying to select the code you believe is easiest to get approved.

Be prepared to explain:

• what you sell;
• how the business makes money;
• which products or services generate the most revenue;
• whether you operate several separate lines of business;
• where customers buy;
• whether you have multiple websites;
• whether activities operate under different trading names; and
• where relevant, how transactions are split between different activities.

That information can help the acquirer determine the appropriate classification.

Is an MCC the Same as a Companies House SIC Code?

No.

An MCC and a UK Standard Industrial Classification code serve different purposes.

The Office for National Statistics describes UK SIC as the system used to classify business establishments and other statistical units according to their economic activity.

UK SIC 2026 is the current ONS classification framework as of 2026.

Visa notes that its MCC descriptions have historical links to SIC and ISO classifications, but MCCs and SIC codes are not the same classification system.

MAS View

Do not assume the SIC code registered for your company automatically determines your merchant-account MCC.

They classify business activity for different purposes.

Does My MCC Affect Merchant Account Approval?

Yes, it can.

The MCC gives an acquiring bank an immediate indication of the activity being processed.

That can influence whether:

• the provider supports the sector;
• specialist underwriting is required;
• particular scheme rules apply;
• additional evidence is required;
• a reserve or other risk control might be considered;
• additional monitoring applies; or
• the merchant falls outside the provider's risk appetite.

However, MCC is only part of the underwriting assessment.

A provider can also consider:

• processing volume;
• average transaction value;
• maximum transaction value;
• chargebacks;
• refunds;
• fraud;
• customer geography;
• business location;
• financial strength;
• delivery times;
• subscription arrangements;
• regulatory requirements;
• previous processing history; and
• the merchant's payment technology.

This is why our High-Risk vs Low-Risk Merchant Accounts guide treats MCC as one risk indicator rather than the entire underwriting decision.

Is There a Universal High-Risk MCC List?

No single list determines whether every payment provider will treat every merchant as high risk.

This distinction is important.

Payment providers and acquiring banks have their own risk appetite.

An MCC accepted by one provider may:

• be prohibited by another;
• require enhanced underwriting elsewhere;
• be accepted only for established merchants;
• require a minimum processing volume;
• require additional financial information; or
• be supported subject to different commercial terms.

However, this does not mean the term “high-risk MCC” has no basis within card-scheme rules.

Visa formally identifies specific merchant categories and activities as High-Integrity Risk.

That scheme classification is more precise than simply taking a long list of MCCs used by specialist acquirers and describing every one of them as universally high risk.

MAS View

There are three different concepts that are often mixed together online:

1. the merchant's MCC;
2. card-scheme risk classifications and requirements; and
3. the individual payment provider's risk appetite.

They are related, but they are not interchangeable.

Visa High-Integrity Risk MCC List 2026

Visa's April 2026 Merchant Data Standards Manual identifies a number of MCCs and transaction types within its High-Integrity Risk framework.

Visa identifies the following MCCs for card-absent transactions, subject to the detailed regional and transaction-specific conditions in the Visa rules:

Important: this table summarises current published Visa merchant-data standards. The detailed Visa rules, regional requirements and individual transaction circumstances determine whether specific requirements apply.

Which Other Card-Absent Transactions Can Fall Within Visa's High-Integrity Risk Rules?

Visa's April 2026 standards also identify certain activities under other MCCs where the specific type of card-absent transaction brings the merchant within the High-Integrity Risk framework.

Why This Distinction Matters

It would be inaccurate to conclude that every merchant using one of these MCCs is automatically a high-risk merchant in every circumstance.

For example, Visa's current rules relating to MCC 4816 refer specifically to particular file-sharing/cyber-locker activity.

Likewise, MCC 5816 covers digital gaming activity more broadly, while Visa's High-Integrity Risk provision relates specifically to transactions involving skilled-game wagering.

MAS View

The transaction matters as well as the code.

This is why simply looking up an MCC online cannot replace proper merchant underwriting.

Are Travel, Airlines and Hotels Automatically High-Risk MCCs?

No.

This is a good example of why generic “high-risk MCC lists” can become misleading.

Travel businesses can receive specialist underwriting because of factors such as:

• future delivery;
• large advance payments;
• cancellations;
• refund exposure;
• seasonality;
• international customers;
• supplier dependency; and
• potential chargebacks if future services cannot be delivered.

Relevant MCCs can include:

These are legitimate mainstream business categories.

A provider may still consider the merchant's future financial exposure when deciding whether and on what terms to accept the business.

That is a different concept from Visa formally designating a particular MCC as High-Integrity Risk.

MAS View

A business can require specialist underwriting without its MCC appearing on a card-scheme High-Integrity Risk list.

For merchants, the practical question is:

“Which providers understand the risk created by my business model?”

rather than:

“Is my four-digit number on an internet high-risk list?”

Can Subscription Businesses Have a High-Risk MCC?

Subscription payments provide another useful example.

Not every business charging customers on a recurring basis should use MCC 5968.

Visa's April 2026 standards describe MCC 5968 as relating to direct-marketing continuity/subscription merchants.

Visa also explains that merchants that are not participating in direct-marketing activity but happen to offer recurring purchases should generally use the MCC that best describes their actual business.

For example, a software company charging a monthly subscription is not automatically converted into MCC 5968 simply because it uses recurring billing.

The nature of the business and the way it sells matter.

However, particular negative-option subscription activity can fall within Visa's High-Integrity Risk framework.

MAS View

Recurring payment is a payment method. MCC describes merchant activity.

Do not assume every subscription company belongs under the same merchant code.

What MCC Is Used for Gambling?

Visa's current standards identify MCC 7995 for betting and gambling activity including games of chance for prizes of monetary value.

Visa also has specific rules for how gambling transactions must be classified.

For card-present activity, gambling transactions must use the gambling MCC while other goods or services can require their appropriate MCC.

For online gambling, Visa states that MCC 7995 must be used for the relevant online gambling transactions according to its classification rules.

Gambling businesses can also be subject to:

• licensing requirements;
• scheme registration;
• enhanced underwriting;
• fraud controls;
• dispute monitoring;
• customer-location restrictions; and
• individual acquiring-bank appetite.

The MCC is therefore one part of a much wider acquiring assessment.

Which MCCs Apply to Cryptocurrency?

Cryptocurrency transactions can require specific MCC and transaction treatment depending on the activity.

Visa's April 2026 Merchant Data Standards Manual refers to MCCs including:

• 4829;
• 6012;
• 6051; and
• 6540

in connection with different types of non-fiat-currency activity where applicable.

Visa also requires additional transaction indicators in certain cryptocurrency scenarios.

This is another reason it is unsafe to conclude:

“crypto = one MCC”.

The correct classification can depend on exactly what the merchant or payment intermediary is doing.

Can a Business Have More Than One MCC?

Yes.

This is one of the most useful clarifications in Visa's current merchant-data rules.

Visa has both:

• mandatory multiple-MCC rules; and
• optional multiple-MCC rules.

Visa says that where a merchant has more than one business activity, the general approach can be to:

• use the MCC representing the business with the highest sales volume; or
• use different MCCs for different qualifying lines of business.

There are also circumstances where separate MCCs are specifically required.

When Does Visa Require Multiple MCCs?

Visa's April 2026 standards give several examples.

These include circumstances involving:

• automated fuel dispensers and other goods sold at the same merchant;
• cash disbursements;
• quasi-cash transactions;
• certain cryptocurrency transactions;
• money-transfer activity;
• different businesses operating at the same location;
• different ecommerce websites;
• payment facilitators;
• gambling; and
• businesses where one or more lines of business are classified as High-Integrity Risk.

For example, Visa says a merchant with several lines of business at one location must separate a High-Integrity Risk activity from other non-High-Integrity Risk activities using the appropriate MCCs.

Can One Website Have More Than One MCC?

Potentially, depending on how the businesses and websites are structured.

Visa treats ecommerce websites as merchant locations for MCC purposes.

Its April 2026 standards explain that where a merchant operates multiple ecommerce websites offering distinct goods or services, each website may need the MCC that most accurately reflects the activity conducted on that site.

Visa also provides separate rules for businesses operating different activities from the same physical premises.

This can become particularly relevant for:

• groups with several brands;
• multi-service businesses;
• marketplaces;
• hospitality businesses;
• platforms;
• multi-site organisations; and
• businesses that have expanded into new product categories.

MAS View

If your business has evolved significantly since your merchant account was opened, it is worth checking whether the payment-provider setup still accurately represents what the business now does.

What MCC Does a Marketplace Use?

Visa currently includes MCC 5262 – Marketplaces.

However, not every ecommerce business selling third-party products automatically qualifies as a marketplace for card-scheme purposes.

Visa's Merchant Data Standards state that qualifying marketplaces bring cardholders and retailers selling different goods or services together through a single ecommerce website or mobile application under a single marketplace brand.

Visa also states that a marketplace with only a single line of goods or services should use the MCC that most accurately describes that line of business.

Visa registration and qualification requirements can also apply to marketplaces.

Payment architecture matters here too.

If your business receives money from customers before passing it to another business or seller, there may also be wider payment-services and regulatory considerations.

See our Integrated Payments Solutions UK guide for more on how payments interact with business software and payment flows.

Can the Wrong MCC Cause Problems?

Yes.

An incorrect merchant category can create problems because the code is used throughout card-payment infrastructure.

Potential issues can include:

• incorrect merchant classification;
• incorrect application of scheme rules;
• underwriting inconsistencies;
• transaction-monitoring issues;
• pricing or interchange differences;
• compliance questions;
• problems where the actual website does not match the merchant category; and
• questions during a future provider switch.

Visa states that acquirers and their agents must assign the correct MCC and that Visa can require corrections to MCC assignments and use.

Visa also recommends periodically reviewing assigned MCCs for accuracy.

MAS View

A lower-risk-looking MCC is not a workaround for a difficult merchant application.

The solution to a complex merchant profile is appropriate underwriting and provider fit, not inaccurate classification.

Does MCC Affect Card Processing Fees?

It can.

Merchant category can form part of the rules used within card-payment pricing and interchange.

But MCC is only one part of what a merchant ultimately pays.

Card-processing costs can also depend on:

• card type;
• consumer versus commercial cards;
• domestic versus international cards;
• card-present versus card-not-present transactions;
• acquirer margin;
• gateway fees;
• scheme fees;
• transaction volume;
• commercial negotiations;
• risk pricing; and
• additional payment services.

For a broader comparison of these costs, see our UK Merchant Fees Benchmark 2026.

Does a High-Risk MCC Mean Higher Processing Fees?

Not automatically, but specialist underwriting can affect commercial terms.

A provider considering a merchant with greater exposure may potentially apply different:

• processing margins;
• reserve requirements;
• settlement periods;
• chargeback fees;
• minimum charges;
• processing limits; or
• contract conditions.

The appropriate comparison therefore goes beyond the headline transaction rate.

Established merchants should compare:

Can My MCC Cause My Merchant Account to Be Declined?

It can contribute to a decline where the provider does not support that category or the underlying business activity falls outside its risk appetite.

But a decline can also result from factors unrelated to MCC.

These include:

• poor provider fit;
• insufficient information;
• processing history;
• chargebacks;
• financial concerns;
• future-delivery exposure;
• geographical restrictions;
• regulation;
• licensing;
• technical requirements; and
• previous merchant-account history.

Our Merchant Account Declined guide explains how these factors interact and what businesses should consider before applying elsewhere.

What Did Our 2026 Merchant Onboarding Research Find?

The MerchantRoute Merchant Onboarding Study 2026, published by Merchant Advice Service, asked 25 payments-industry participants about application and onboarding.

41% of respondents identified poor provider or risk fit as a contributor to merchant-account declines.

This is particularly relevant to MCC.

If the business category falls outside an acquirer's appetite, submitting a well-completed application does not necessarily solve the underlying provider-fit problem.

The research also found:

• 52% said a straightforward merchant could typically be approved within 1–3 working days; and
• 18% said onboarding could take more than one month.

MAS View

MCC should form part of provider selection before an application is submitted.

It is much more useful to identify potentially suitable acquiring routes first than to discover after applying that the provider does not support the merchant category.

Find Your New Processor

Does MCC Affect Visa VAMP or Card-Scheme Monitoring?

MCC can be relevant to scheme requirements, but a merchant's MCC alone does not determine its fraud or dispute performance.

Visa operates monitoring frameworks including the Visa Acquirer Monitoring Program (VAMP), while scheme rules also contain additional requirements for particular merchant and transaction types.

Merchants should distinguish between:

• merchant classification;
• scheme risk programmes;
• fraud performance;
• dispute performance;
• provider risk appetite; and
• merchant screening.

These can interact, but they are different concepts.

For current information about Visa's monitoring changes, read our Visa VAMP Rules 2026 guide.

Does My MCC Determine Whether I Am on Mastercard MATCH Pro?

No.

An MCC and Mastercard MATCH Pro serve different purposes.

Your MCC describes merchant activity.

MATCH Pro is part of Mastercard's merchant-risk framework and can contain information relevant to merchant onboarding where merchants have previously been terminated for defined reasons or other relevant risk signals exist.

Having an MCC associated with specialist underwriting does not automatically mean a merchant is listed on MATCH Pro.

Likewise, being declined by one payment provider does not automatically mean the business has been added to MATCH Pro.

What If My Business Does Not Fit Neatly Into One MCC?

This is increasingly common.

Modern businesses can combine:

• ecommerce;
• software;
• subscriptions;
• marketplaces;
• physical retail;
• events;
• hospitality;
• digital goods;
• professional services;
• memberships; and
• other revenue streams.

Do not force a complicated business model into the first MCC that looks broadly relevant.

Instead, map:

1. each product or service;
2. the revenue attributable to each activity;
3. the websites or trading brands used;
4. how customers pay;
5. who fulfils the product or service;
6. whether activities operate separately;
7. whether different payment flows are involved; and
8. whether any activity has specific scheme requirements.

The payment provider or acquirer can then determine the appropriate merchant classification and whether one or several merchant accounts/MCCs are required.

The MAS MCC & Provider-Fit Test

For provider matching, Merchant Advice Service would not stop after identifying the merchant's MCC.

We would consider six layers.

1. Merchant Category

What does the business sell and which MCC or MCCs appropriately describe the activity?

2. Actual Business Model

How does the company make money?

For example:

• direct ecommerce;
• subscription;
• marketplace;
• future delivery;
• retail;
• software;
• booking;
• membership; or
• another model.

3. Risk Profile

What does the merchant's real processing profile look like?

• monthly turnover;
• transaction values;
• refunds;
• chargebacks;
• customer geography;
• fulfilment period;
• financial position; and
• processing history.

4. Provider Appetite

Which acquiring providers currently support that combination of MCC and business model?

5. Technical Fit

Can the provider support the merchant's:

• gateway;
• API;
• Shopify store;
• booking platform;
• subscriptions;
• EPOS;
• CRM;
• ERP;
• marketplace flow;
• multi-currency requirements; or
• other integrations?

6. Commercial Fit

Only then compare:

• transaction costs;
• gateway fees;
• settlement;
• reserves;
• FX;
• chargeback fees;
• contract terms; and
• other commercial conditions.

MAS View

MCC → Business Model → Risk → Provider Appetite → Technical Fit → Commercial Fit.

MCC is the start of merchant matching, not the end of it.

How Merchant Advice Service Uses MCC When Comparing Payment Providers

Merchant Advice Service helps businesses compare payment providers according to their actual requirements rather than simply ranking providers by headline transaction rate.

The Payments Directory® can use criteria including:

• industry;
• business model;
• Merchant Category Code;
• provider risk appetite;
• business location;
• customer geography;
• payment methods;
• currencies;
• integrations; and
• processing requirements.

The payment provider or acquiring bank still undertakes its own underwriting and makes the final decision regarding acceptance, pricing, settlement and any reserve.

Merchant Advice Service cannot guarantee merchant-account approval.

The purpose of using MCC at the provider-selection stage is to reduce obvious mismatches between the merchant and the providers being considered.

Read more about How Merchant Advice Service Works.

Find Your New Processor

Sources & Further Reading

Visa — Merchant Data Standards Manual, April 2026

Primary Visa source for Merchant Category Code definitions, MCC assignment requirements, multiple-MCC rules, marketplace classification and Visa's current High-Integrity Risk MCC information.

Visa — Merchant Data Standards Manual, April 2026

Visa — Core Rules and Visa Product and Service Rules

Visa's current public rules include requirements relating to High-Integrity Risk merchants, acquiring oversight and merchant monitoring.

Visa Core Rules and Visa Product and Service Rules

Mastercard — Quick Reference Booklet: Merchant Edition

Mastercard's 2026 merchant reference material provides its current acceptor business-code / MCC framework and merchant-category information.

Mastercard — Quick Reference Booklet: Merchant Edition

Office for National Statistics — UK SIC 2026

The ONS maintains the UK's Standard Industrial Classification framework used to classify businesses by economic activity. SIC should not be confused with card-payment Merchant Category Codes.

Office for National Statistics — UK SIC 2026

Companies House — SIC Codes

Companies House uses SIC codes to describe company economic activity. These are separate from the MCC assigned within card-payment processing.

Companies House — SIC Code List

Related Merchant Advice Service Guidance

• High-Risk vs Low-Risk Merchant Accounts: What Determines Your Risk Level?
• Why Do Merchant Account Applications Get Declined?
• High-Risk Merchant Account Applications for UK & EU Businesses
• High-Risk Merchant Account Advice
• Payment Gateways for High-Risk Merchants
• The Payments Directory®
• UK Merchant Account Application & Onboarding Study 2026
• Integrated Payments Solutions UK
• Research & Data
• Research & Comparison Methodology

Editorial & Commercial Disclosure

Merchant Advice Service is an independent payments information, comparison and provider-matching service.

MAS may receive commission or a referral fee from some payment providers where a business chooses to proceed following an introduction. This does not determine the factual MCC, card-scheme or merchant-underwriting information contained within this guide.

Merchant Advice Service is not Visa, Mastercard, an acquiring bank or a payment processor and does not assign Merchant Category Codes or make merchant-account underwriting decisions.

Merchant Category Code definitions and card-scheme requirements can change. References to Visa and Mastercard are based on their current publicly available documentation at the date this guide was reviewed.

A merchant being associated with a particular MCC does not mean that every payment provider will classify, accept, decline or price that merchant in the same way.

Where this guide refers to Visa High-Integrity Risk MCCs, the applicable Visa rules, regional conditions and transaction-specific requirements should be consulted rather than relying solely on the summary table above.

Payment-provider acceptance criteria and acquiring-bank risk appetite can change independently of card-scheme MCC classifications.

Card-scheme and MCC information last checked: 1 September 2026.

This guide provides general payments information and should not be treated as legal, regulatory, financial or formal compliance advice.