A guide to MCC 4789: Transportation services (NEC)

MCC code 4789: learn its business impact and how to verify your code. Get JIM for iOS/Android to accept payments on your phone for a 1.99% fee.

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Mar 25, 2026

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2 min read time

MCC 4789 is a merchant category code used by the International Organization for Standardization (ISO) to classify TRANSPORTATION SERVICES (NEC). This designation applies to businesses that provide transportation-related services without a more specific code. For instance, the category includes transactions for ambulance services, ferry operations, toll roads, and vehicle towing. It generally covers services that support the transportation industry rather than primary transit methods like airlines or railways.

Which businesses fall under MCC 4789?

MCC 4789 applies to a broad range of transportation service establishments:

Toll Roads and Bridges: This includes payments to use highways, bridges, and tunnels that require a fee. Electronic toll collection systems like E-ZPass or FasTrak and physical toll booths fall into this category.
Ferry Services: Businesses that transport passengers and vehicles across bodies of water use this code. Examples include large operators like the Staten Island Ferry or smaller, local passenger and car ferry services.
Vehicle Towing Services: Companies that offer roadside assistance and tow vehicles are classified here. This covers services from national providers like AAA to independent local companies that assist stranded motorists.
Ambulance Services: This code applies to non-hospital-based ambulance services that charge for patient transport. It covers both emergency and non-emergency medical transportation provided by private companies or municipal services.
Freight Forwarders: These are companies that organize shipments to get goods from a manufacturer to a final market. They act as an intermediary between the shipper and various transportation services.
Horse-Drawn Carriage Rides: This niche category covers operators that offer tours or transportation via horse-drawn vehicles. You might find these services in historic city districts or popular tourist areas for sightseeing.

Business implications of MCC 4789

Payment networks including Visa, Mastercard, American Express, and Discover use MCC 4789 to categorize transactions, which affects several aspects of business operations. These networks evaluate the risk associated with a business based on its MCC. For MCC 4789, which covers a diverse set of services from towing to ferries, the perceived risk can influence the interchange rates charged for processing payments.

Beyond risk assessment and transaction fees, this code has other operational uses. It helps with expense management, financial planning, and even influences customer spending habits through rewards programs.

Expense tracking

Companies rely on MCC codes to automate the categorization of business expenses on credit card statements. For transportation services under MCC 4789, this simplifies the process of identifying travel-related expenditures, which can support claims for tax deductions on legitimate business travel.

Financial analysis

Businesses use this MCC for financial analysis to monitor spending patterns related to transportation services. By tracking these costs, finance teams can develop more accurate forecasts, manage departmental budgets effectively, and identify opportunities for cost savings within their supply chain or travel policies.

Compliance and auditing

The consistent application of MCC 4789 creates a clear audit trail for business expenses. This documentation allows auditors to quickly verify that payments were for legitimate transportation services, which supports internal compliance and regulatory requirements.

Rewards and customer behavior

Credit card issuers often tie rewards, like extra points or cash back, to specific MCCs. Since MCC 4789 falls under transportation, cardholders with travel-focused rewards may prefer businesses with this code, a behavior that can influence their purchasing decisions.

How to verify your business's MCC

Transportation service owners should confirm their MCC classification for proper transaction processing and to avoid customer confusion regarding rewards eligibility. If you find that your business is incorrectly classified, for example, a ferry service coded as a boat rental, contact your payment processor immediately to request reclassification.

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

Contact Your Payment Processor: Your merchant services provider assigns the MCC during account setup. To verify your classification, contact their customer service department or review the details outlined in your original merchant agreement documents.
Review Processing Statements: Your monthly merchant statements typically display the assigned MCC. Look for the four-digit number, which is often located in the account information or business profile section of the document.
Check with Your Acquirer: The acquiring bank or financial institution that handles your transactions also maintains your MCC in their system. You can call their merchant support team to confirm your current business classification.
Test Transaction Method: Some merchants run a small test transaction on a personal credit card to see how it appears on the statement. This method is less reliable than direct confirmation from your processor.

How to choose a reliable payment service provider

Your MCC 4789 classification directly influences interchange rates and processing requirements, making your choice of payment processor a major business decision. Providers vary in their pricing models, settlement speeds, and support levels, all of which affect your bottom line. To make the right choice, evaluate potential partners on these factors:

Transparent pricing: Flat-rate pricing offers predictability over complex models that can hide fees, which simplifies financial forecasting. 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: Your processor should accept all major credit cards and digital wallets like Apple Pay and Google Pay. This flexibility meets modern customer expectations and prevents lost sales from payment friction.
Fast fund access: Quick access to funds helps manage daily operations. For MCC 4789 businesses, immediate settlements cover urgent expenses like fuel, supplier payments, and payroll, which prevents cash flow disruptions.
Security: A secure processor uses encryption and tokenization to protect customer data. JIM uses tokenization for every transaction, so card numbers are never stored on your device, reducing your liability.
Reporting: Look for a provider with clear analytics. The JIM AI assistant provides sales reports and transaction history through a chat interface, helping you monitor performance without complex dashboards.

Streamline payments with JIM

JIM offers transportation service owners a straightforward payment solution. The JIM tap-to-pay app converts your iPhone or Android phone into a payment terminal with no extra hardware. It uses NFC technology to accept payments directly on your device. You pay a flat 1.99% per transaction with no setup costs, monthly fees, or variable rates for premium cards.

You can also use payment links to collect funds for pre-booked rides or to settle invoices, at a rate of 4.99% + $0.30 per sale. After a transaction, your funds become available instantly on a JIM Visa Prepaid Card. You can add this card to Apple Pay or Google Pay, which allows you to spend your money right away.

Frequently Asked Questions

Question

What is Merchant Category Code 4789?

Merchant Category Code 4789 is a four-digit classification number assigned to transportation services not elsewhere classified by payment networks and the International Organization for Standardization (ISO). This code identifies transactions for services like toll roads, ferries, and vehicle towing. Payment processors use this code to categorize transactions for interchange fees, reporting, and customer rewards programs.

Is Merchant Category Code 4789 high-risk?

Payment processors classify MCC 4789 as a standard-risk category. This classification reflects a moderate likelihood of chargebacks, especially for services like vehicle towing where disputes over fees can occur. As a result, businesses with this code face moderate interchange rates and avoid the higher fees or stricter underwriting associated with high-risk merchants.

Can a business have multiple MCC codes?

A business typically operates under a single MCC that represents its main source of income. However, companies with diverse operations can maintain separate merchant accounts, each with a unique code for different revenue streams. For example, a large resort, primarily classified under a hotel MCC, might also run a private ferry service. This ferry operation could have its own merchant account with the MCC 4789 designation to accurately track its distinct transportation-related sales.

What happens if my MCC code is wrong?

An incorrect MCC classification can lead to financial penalties and customer dissatisfaction. For instance, travelers using rewards cards may not get the points they expect, which could discourage them from choosing your service in the future. A wrong code also means you could face improper interchange rates, either costing you more in fees or putting you in violation of payment network rules for receiving a rate intended for a different industry.

Can merchants choose their MCC code?

A business cannot arbitrarily select its MCC code; the payment processor assigns it. This assignment is determined by the company's main business activities and must adhere to guidelines from the ISO and payment networks. However, if a merchant believes their code is a poor fit for their business, they have the option to ask their processor for a re-evaluation and reclassification.

How does MCC 4789 affect my payment processing costs?

Your MCC 4789 classification directly influences the interchange rates you pay on each transaction. This code represents a moderate-risk category, so its rates are generally lower than those for high-risk industries but higher than what low-risk businesses like grocery stores pay. The ultimate effect on your processing costs depends entirely on your payment processor’s pricing structure.

A provider with interchange-plus pricing passes these variable rates directly to you, while flat-rate processors like JIM absorb the variability and charge you a consistent fee regardless of card type.