A guide to MCC 7542: Car washes

What is MCC 7542? Discover what this car wash code means for your business and how to verify it. Get JIM for iOS/Android and accept payments for just 1.99%.

WRITTEN BY

Mar 25, 2026

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2 min read time

The International Organization for Standardization (ISO) uses Merchant Category Code (MCC) 7542 to classify car washes. This code applies to businesses that provide vehicle cleaning services. Transactions covered include payments for automated or self-service car washes and professional detailing. Any business primarily focused on washing cars, trucks, or other vehicles will fall under this specific MCC.

Which businesses fall under MCC 7542?

MCC 7542 applies to a broad range of automotive cleaning establishments:

Automated Tunnel Car Washes: These conveyor-style systems pull vehicles through various cleaning and drying stations. Major chains like Mister Car Wash and Zips Car Wash operate under this model.
Self-Service Car Wash Bays: These facilities provide high-pressure wands and brushes for customers to wash their own vehicles. They are typically coin-operated or accept credit cards at local, independent lots.
Hand Car Wash and Detailing Shops: These businesses offer manual cleaning, from a basic exterior wash to comprehensive interior and exterior detailing. Many local auto spas and detailing centers fall into this category.
In-Bay Automatic Car Washes: Often located at gas stations, these are single-bay washes where the vehicle remains stationary while equipment moves around it. Many Shell or BP stations feature these systems.
Mobile Car Wash Services: These companies bring the car wash to a customer's location, whether at home or the office. Services like Spiffy or Washe use this on-demand business model.
Truck and Fleet Washing Stations: These specialized facilities are designed to clean large commercial vehicles like semi-trucks and buses. Companies such as Blue Beacon Truck Wash serve the commercial trucking industry.

Business implications of MCC 7542

Payment networks including Visa, Mastercard, American Express, and Discover use MCC 7542 to categorize transactions, which affects several aspects of business operations. These networks use the code to assess a business's risk profile, which in turn influences the interchange rates charged for each transaction.

For car washes, this classification directly impacts profitability. Beyond risk and fees, the code serves other functions in financial management and customer engagement, providing a framework for tracking and analysis.

Expense tracking

Companies rely on MCC 7542 for automated expense tracking. When an employee uses a corporate card at a car wash, the transaction is automatically categorized as vehicle maintenance. This simplifies expense reporting and can substantiate deductions for business-related vehicle upkeep during tax season.

Financial analysis

For businesses with vehicle fleets, this MCC code provides valuable data for financial analysis. Managers can track spending on vehicle cleaning, identify cost-saving opportunities, and create more accurate budgets. This data helps forecast future maintenance expenses with greater precision across the company.

Compliance and auditing

Consistent MCC coding establishes a clear audit trail for financial review. Auditors can quickly verify that expenses claimed under vehicle maintenance align with company policy, which simplifies compliance checks and confirms legitimate business expenditures.

Rewards and customer behavior

Credit card issuers use MCCs to determine rewards eligibility. A card offering bonus points on travel or gas might not include car washes. This coding can influence where a customer chooses to spend money, as they may prefer businesses that qualify for rewards.

How to verify your business's MCC

Car wash owners should confirm their MCC classification for proper transaction processing and to avoid customer confusion regarding rewards eligibility. If you discover your business is incorrectly classified, for example, a car wash coded as a gas station, contact your payment processor immediately to request reclassification.

Here's how to verify is your MCC classification is set up correctly:

Contact Your Payment Processor: Your merchant services provider assigned the MCC during account setup. You can verify the classification by contacting customer service or by checking your merchant agreement documents. This provides the most direct confirmation of your business code.
Review Processing Statements: Monthly merchant statements usually display the assigned MCC. Look for a four-digit number in the account information or business profile details section. This offers a regular chance to check that your code is correct.
Check with Your Acquirer: The acquiring bank or financial institution holds the MCC code in its system. Their merchant support team can confirm your current classification. A phone call or email to the support line will provide the information you need.
Test Transaction Method: Some merchants process a small test transaction and check how it appears on a personal credit card statement. This approach shows how a customer sees the charge, but it is less reliable than direct confirmation from the processor.

How to choose a reliable payment service provider

Your MCC 7542 classification influences interchange rates and processing requirements. Since payment processors handle these transactions differently, your choice of provider matters. Variations in pricing, settlement speed, and support affect your bottom line. Consider these factors when you select a provider for your car wash business.

Transparent pricing: Simple, flat-rate pricing avoids the confusion of complex models and provides predictable costs. The JIM tap-to-pay app for iPhone and Android charges 1.99% per transaction with no setup costs, monthly fees, or premium card surcharges.
Payment method support: A modern processor should accept all major credit cards, like Visa and Mastercard, plus digital wallets like Apple Pay and Google Pay. This flexibility meets customer expectations and prevents lost sales.
Fast fund access: Quick access to funds improves cash flow. For a car wash, this means you can cover immediate costs, restock cleaning supplies, make supplier payments, or meet payroll without delay.
Security: Protect your business and customers with a processor that uses encryption and tokenization. With tokenization, actual card numbers are never stored on your device, which reduces liability in a data breach.
Reporting: Advanced analytics offer business insights. For example, JIM's AI assistant provides sales reports and transaction history through a chat interface, which helps you track performance.

Streamline payments with JIM

JIM offers car wash owners a straightforward solution to process payments. The JIM tap-to-pay app converts your iPhone or Android phone into a payment terminal through NFC technology, so you need no extra hardware. You receive a flat 1.99% rate per transaction. This price structure has no setup costs, monthly fees, or variable rates for premium cards, which gives you predictable transaction costs.

You can also accept remote payments with payment links for 4.99% + $0.30 per sale (for customers who pre-book a detail service). After each transaction, your funds become available instantly on a JIM Visa Prepaid Card. You can add this card to Apple Pay or Google Pay for immediate use of your funds. This system provides quick access to your revenue.

Frequently Asked Questions

Question

What is Merchant Category Code 7542?

Merchant Category Code 7542 is a four-digit classification number assigned to car wash businesses by payment networks and the International Organization for Standardization (ISO). This code identifies transactions for services such as automated washes, self-service bays, and professional detailing. Payment processors use the code to categorize transactions for interchange fees, financial reporting, and credit card rewards programs.

Is Merchant Category Code 7542 high-risk?

Payment processors classify Merchant Category Code 7542 as low-risk. This classification stems from the low likelihood of chargebacks and fraud associated with car wash services. Since transactions are typically in-person and for small amounts, the risk profile is favorable. This low-risk status results in more moderate interchange rates and lower processing fees for business owners.

Can a business have multiple MCC codes?

Generally, a payment processor assigns a single MCC to a merchant account based on its main business activity. A company with distinct revenue streams, however, can open multiple merchant accounts with different codes. For instance, a gas station (MCC 5541) that includes a car wash might set up a separate merchant account under MCC 7542 for its vehicle cleaning services. This approach allows for accurate financial tracking and reporting for both sides of the operation.

What happens if my MCC code is wrong?

An incorrect MCC code can have serious financial and customer-related consequences. Customers might not receive the credit card rewards they expect for automotive services, which could discourage them from returning to your car wash. Furthermore, your business could face improper interchange rates that lead to higher processing fees than necessary. In some cases, if you receive unfairly low rates from a misclassification, you could even violate payment network agreements and create compliance issues.

Can merchants choose their MCC code?

Merchants cannot arbitrarily choose their Merchant Category Code. Payment processors assign the code based on a business's primary activities, following the standards set by the ISO and payment networks. This process determines the classification. If a business owner finds their code does not accurately reflect their services, they can contact their payment processor to request a reclassification to the correct category.

How does MCC 7542 affect my payment processing costs?

Your MCC 7542 classification directly influences the interchange rates you pay on each transaction. Car washes fall into a low-risk category, which means they typically receive moderate rates—lower than high-risk industries like travel but higher than ultra-low-risk sectors such as grocery stores. The exact financial impact, however, depends on your payment processor’s pricing model.

Processors with interchange-plus pricing pass these variable rates directly to you, so your costs fluctuate with each card type. In contrast, flat-rate processors like JIM absorb the variability and charge you a consistent fee regardless of card type.