What is MCC code 8931?

What is MCC 8931? Learn its business impact and how to verify your code. Get JIM on iOS/Android for flat-rate (1.99%) instant business payments.

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Mar 20, 2026

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2 min read time

MCC 8931 is the merchant category code for accounting, bookkeeping, or auditing services, as designated by the International Organization for Standardization (ISO). This classification applies to businesses that offer services like tax preparation, payroll, and public accounting. Transactions with certified public accountants or firms that handle these financial management tasks fall under this code. It covers professional financial support for both businesses and individual clients.

Which businesses fall under MCC 8931?

MCC 8931 applies to a broad range of financial service establishments:

Certified Public Accountant (CPA) firms: These firms provide comprehensive accounting services, including financial statement audits and advisory. Large international firms like Deloitte or PwC and smaller local practices fall into this category.
Tax preparation services: Businesses specializing in preparing and filing tax returns for individuals and companies use this code. Well-known examples include national chains like H&R Block and Jackson Hewitt.
Bookkeeping services: These companies record daily financial transactions and manage general ledgers for other businesses. Providers range from online services like Bench to independent freelance bookkeepers.
Payroll processing services: Companies that manage employee salaries, wages, taxes, and deductions are classified under MCC 8931. Major providers in this space include companies such as ADP and Paychex.
Auditing services: This includes businesses that conduct independent examinations of an organization's financial records to verify their accuracy. This applies to both external auditors and specialized internal audit consultants.
Financial management consultants: Firms offering consulting on accounting systems, financial controls, and reporting processes are included. This covers specialists who advise on financial structuring and efficiency for other companies.

Business implications of MCC 8931

Payment networks including Visa, Mastercard, American Express, and Discover use MCC 8931 to categorize transactions, which affects several aspects of business operations. These payment networks use the code to assess a business's risk level. For MCC 8931, the professional service nature generally corresponds to lower interchange rates, as these transactions are considered low-risk.

Beyond risk assessment and transaction fees, this MCC code influences other operational functions for businesses that use these services.

Expense tracking

Companies rely on MCC codes to automate expense management. When an employee pays for accounting or tax services, the transaction is automatically categorized on their corporate card statement. This simplifies tracking and helps identify eligible business expenses for tax deductions.

Financial analysis

This MCC also supports detailed financial analysis. Businesses can analyze spending patterns by filtering for MCC 8931. This allows them to track costs related to accounting and auditing, manage departmental budgets, and forecast future professional service expenses with greater accuracy.

Compliance and auditing

For compliance purposes, consistent MCC application is valuable. The code creates a clear audit trail, making it straightforward for internal or external auditors to verify that payments were for legitimate professional services.

Rewards and customer behavior

MCCs can influence customer spending through credit card rewards programs. Some cards offer bonus points or cash back for business service categories. Customers may choose an accounting firm that accepts credit cards to maximize their rewards, directing their purchasing decisions.

How to verify your business's MCC

Accounting and bookkeeping service owners should confirm their MCC classification to ensure proper transaction processing and avoid customer confusion regarding rewards eligibility. If you find out that your business is incorrectly classified—for example, an accounting firm coded as a management consulting service—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 assigned the MCC during account setup. To verify your classification, contact their customer service department or review the details in your original merchant agreement documents. This is the most direct method.
Review Processing Statements: Your monthly merchant statements typically display the assigned MCC. Look for a four-digit number listed in the account information or business profile section of the document to find your current code.
Check with Your Acquirer: The acquiring bank or financial institution that processes your payments maintains the MCC in their system. You can call their merchant support team, and they can confirm the classification they have on file for your business.
Test Transaction Method: Some merchants run a small test transaction on a personal credit card and then check the statement to see how it was categorized. This approach is less reliable than direct confirmation from your payment processor.

How to choose a reliable payment service provider

Your MCC 8931 classification directly affects interchange rates and processing requirements, which makes your choice of payment processor important. Different providers handle transactions for professional services distinctively. Variations in pricing models, settlement speeds, and support can accumulate over time, so consider these factors when you select a partner.

Transparent pricing: Look for a provider with a simple, flat-rate structure to avoid complex interchange-plus or tiered models that obscure the true cost. 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, including Visa, Mastercard, and Discover. Support for digital wallets like Apple Pay and Google Pay is also standard to meet modern customer expectations.
Fast fund access: Quick access to funds helps manage cash flow for operational expenses. For an accounting firm, this means you can cover payroll, software subscriptions, and other supplier payments without delay, even before client invoices clear.
Security: Protect client data with a processor that uses end-to-end encryption and tokenization. This technology replaces sensitive card numbers with a unique token, so the original data is never stored on your device or servers.
Reporting: Modern processors offer more than just payment acceptance. JIM's AI assistant provides sales reports and transaction history through a chat interface, which simplifies business analysis and financial oversight.

Streamline payments with JIM

JIM offers accounting service owners a straightforward payment processing solution. The JIM tap-to-pay app converts your iPhone or Android phone into a payment terminal through NFC technology, so you require no extra hardware. You pay a flat 1.99% per transaction. This simple rate comes with no setup costs, monthly fees, or variable charges for premium cards, which helps you forecast expenses with greater certainty.

For remote work, you can use link payments to collect fees for services (such as tax preparation or monthly retainers) at 4.99% + $0.30 per sale. Once a client completes a payment, the funds become available instantly on your JIM Visa Prepaid Card. You can add this card to Apple Pay or Google Pay for immediate use. This gives you direct access to your revenue without the usual bank transfer delays.

Frequently asked questions about 8931

What is Merchant Category Code 8931?

Merchant Category Code 8931 is a four-digit classification number assigned to accounting, auditing, and bookkeeping services by payment networks and the ISO. The code identifies transactions with businesses that offer tax preparation, payroll, and public accounting support. Payment processors use this classification to set interchange fees, create financial reports, and administer credit card rewards programs.

Is Merchant Category Code 8931 high-risk?

Payment processors classify Merchant Category Code 8931 as low-risk. This designation is due to the professional nature of accounting services, which have minimal fraud and low chargeback rates. Because of this low-risk profile, businesses with this MCC receive favorable interchange rates, which reduces their overall transaction costs.

Can a business have multiple MCC codes?

Generally, a business operates under a single merchant category code that reflects its primary source of revenue. However, if a company has distinct business lines, it can establish separate merchant accounts, each with a unique MCC. For instance, a large law firm (MCC 8111) might also operate an in-house accounting division that provides tax preparation services to the public. This secondary operation would qualify for its own merchant account under MCC 8931 to process payments for those specific financial services.

What happens if my MCC code is wrong?

An incorrect MCC creates financial and client-related issues. For example, clients who select your firm to maximize credit card rewards on business services may not get their points, which can harm satisfaction and loyalty. Your payment processor could also assign you improper interchange rates, leading to higher fees. Alternatively, if you benefit from a lower rate intended for another industry, you risk non-compliance penalties from payment networks.

Can merchants choose their MCC code?

Merchants do not have the autonomy to select their own MCC code. Instead, payment processors assign the classification based on the business's primary activities, following guidelines from the ISO and payment networks. If a business owner finds that their assigned code does not accurately represent their services, they can submit a request to their processor for reclassification. This process allows for correction when a business model is misunderstood or has evolved.

How does MCC 8931 affect my payment processing costs?

MCC 8931 directly influences the interchange rates you pay on each transaction. Since payment networks classify accounting services as low-risk, this code typically secures more favorable rates than those applied to many other industries. These professional services have lower transaction costs compared to high-risk sectors, although they may not be as low as high-volume retail like grocery stores.

The exact effect on your bottom line depends on your payment processor’s pricing model. An interchange-plus model passes the specific interchange rate for each card directly to you, while flat-rate processors like JIM absorb the variability and charge you a consistent fee regardless of card type.