Technical Definition
A Merchant Category Code (MCC) is a four-digit number used by the retail financial services industry to classify a business by the types of goods or services it provides. These codes are specified by the ISO 18245 standard.
How MCCs are Assigned
MCCs are assigned to a merchant by a “card acquirer” (the bank that processes their credit card transactions) when the business first starts accepting cards. Assignment follows two primary methods:
- Merchant Type: General codes for industries (e.g., MCC 5411 for Grocery Stores).
- Merchant Name: Specific codes for high-volume entities (e.g., MCC 3000 for United Airlines).
[!IMPORTANT] The same business may code differently across different networks (Visa vs. Amex), and different departments within a single store may have distinct MCCs.
Critical Uses of MCCs
1. Credit Card Rewards
This is the most visible use for consumers. When a card offers “4x on Dining,” it is actually looking for transactions with specific MCCs like 5812 (Eating Places and Restaurants) or 5814 (Fast Food Boats/Restaurants). If a restaurant is improperly coded as a “General Store,” you will not receive your bonus points.
2. Interchange Fees
MCCs determine the “Interchange Fee” that a merchant pays to accept a card. Riskier or low-margin businesses might pay different rates based on their classification.
3. IRS Tax Reporting
In the United States, MCCs are used to determine if a payment is for “services” (which requires 1099 reporting) or “merchandise” (which does not).
4. Network Rules
Card networks use MCCs to define specific rules. For example, Automated Fuel Dispensers (MCC 5542) have unique authorization and clearing message requirements to handle the “pay at the pump” flow.
Verification Tools
To check how a specific merchant codes, users often consult:
- Visa Merchant Data Standards Manual
- AwardWallet’s MCC Lookup Tool
- Card-specific category dashboards
Networks
ISO 18245 | Valid | Merchant Category Codes (MCC) |
VISA | Invalid | |
MASTERCARD | Invalid | |
AMERICAN EXPRESS | Invalid |
Best Credit Cards for MCC
MCC falls under the Services category.
Services Rewards Ranking
| Rank ? AxeTip Rank is strictly determined by the highest total Cash Value. Cards with identical cash payouts share the same rank. | Credit Card | Cash Value ? Actual cash liquidation value (Statement credit or deposit). | Reward Value ? Potential value if used via strategic partner redemptions (e.g., hotel transfers, airline miles). |
|---|---|---|---|
| 1 |  KeyBank • 5x Base Rate • 5,000 Points | +$50.00 1.0¢ | +$50.00 1.0¢ |
| 2 |  Goldman Sachs • 4x Base Rate • 4,000 Gm Rewards | +$40.00 1.0¢ | +$40.00 1.0¢ |
| 3 |  Robinhood • 3x Base Rate • 3,000 Cash Rewards | +$30.00 1.0¢ | +$30.00 1.0¢ |
| 4 |  Alliant Credit Union • 2.5x Base Rate • 2,500 Cash Rewards | +$25.00 1.0¢ | +$25.00 1.0¢ |
| 5 |  American Express • 2x Base Rate • 2,000 Cash Rewards | +$20.00 1.0¢ | +$20.00 1.0¢ |
| 5 |  Capital One • 2x Base Rate • 2,000 Cash Rewards | +$20.00 1.0¢ | +$20.00 1.0¢ |
| 5 |  Capital One • 2x Base Rate • 2,000 Capital One Miles | +$20.00 1.0¢ | +$20.00 1.0¢ |
| 5 |  Capital One • 2x Base Rate • 2,000 Capital One Miles | +$20.00 1.0¢ | +$20.00 1.0¢ |
| 5 |  Capital One • 2x Base Rate • 2,000 Capital One Miles | +$20.00 1.0¢ | +$20.00 1.0¢ |
| 5 |  Capital One • 2x Base Rate • 2,000 Capital One Miles | +$20.00 1.0¢ | +$20.00 1.0¢ |
Merchants
The following merchants are known to historically trigger this category for rewards calculation:
No specific merchants linked yet. AxeTip is currently indexing the global merchant database for this code.