Commercial Card Optimization: How Level 2 and Level 3 Data Can Lower Processing Costs
Payments Education
Commercial Card Optimization: How Level 2 and Level 3 Data Work
Published September 1, 2026
Businesses that accept corporate, purchasing, government, fleet, and other commercial cards may have opportunities to improve how those transactions qualify at interchange. One of the most important pieces of that process is making sure eligible transactions carry the right enhanced payment data.
That is where commercial card optimization and Level 2 and Level 3 data come into the conversation.
Commercial card optimization is not simply about finding a lower quoted processing rate. It is about examining how commercial-card transactions are authorized, captured, enriched with supporting data, and submitted through the gateway and processor. When the required data is available and transmitted correctly, eligible transactions may qualify for more favorable interchange categories than transactions submitted without the necessary information.
Important: Level 2 or Level 3 capability does not guarantee a specific interchange rate or savings amount. Qualification depends on factors such as the card product, merchant category, transaction type, required data fields, processing configuration, network rules, and how the transaction is ultimately submitted.
What Is a Commercial Card?
Commercial cards are payment cards used by businesses, organizations, and government entities for business-related purchases. Depending on the program, these can include corporate cards, purchasing cards, fleet cards, and other business-payment products.
Unlike many consumer transactions, commercial transactions can support additional information about the purchase. That additional information can help provide buyers with better reporting and may also affect how eligible transactions qualify at interchange.
What Is Level 2 Data?
Level 2 data adds enhanced commercial information beyond the basic payment transaction. Visa describes Level II capability as the ability to send information such as sales tax and a customer code.
Depending on the card network, processor, gateway, and transaction, enhanced commercial data may also include business reference information such as a purchase-order or invoice reference.
The exact fields and qualification requirements are not universal, so merchants should avoid assuming that simply entering one additional field automatically causes a transaction to qualify differently.
What Is Level 3 Data?
Level 3 data provides a much deeper description of the underlying purchase. Visa describes Level III summary information as transaction-level details such as an order date and invoice number, while Level III line-item information can include fields such as:
- Product code
- Item description
- Quantity
- Unit cost
This makes Level 3 particularly relevant to businesses that issue detailed invoices or sell multiple products or services in a single commercial transaction.
A Simple Level 3 Example
Imagine a wholesale supplier processes an $8,750 purchasing-card transaction. Instead of sending only the final transaction amount, the payment system may be able to transmit information such as:
- Invoice number: 54832
- Purchase-order number: 10744
- Product: Commercial Pump
- Quantity: 2
- Unit cost: $3,500
- Product: Installation Kit
- Quantity: 5
- Unit cost: $350
The enhanced data gives the commercial-card ecosystem more information about the transaction than a standard payment containing only the total amount.
Why Commercial Card Optimization Matters
Merchants sometimes look at their processing statement and focus only on their processor’s markup. But for businesses accepting substantial commercial-card volume, the underlying interchange qualification can be equally important.
A merchant can have competitive processor pricing and still have commercial transactions that are not being submitted with the data needed for the best available qualification for that transaction.
That is why a commercial-card review should look beyond the headline processing rate.
Having Level 2 or Level 3 Capability Is Not the Same as Being Optimized
A gateway or payment platform may technically support enhanced commercial data, but that does not necessarily mean every eligible transaction is being optimized.
A proper review should determine:
- Which transactions are actually commercial-card transactions
- Whether the gateway supports the necessary enhanced-data fields
- Whether those fields are being populated correctly
- Whether the data survives the full path from the merchant to the processor and card network
- How the transactions ultimately qualify on the merchant statement
For some businesses, the issue is not the absence of a Level 2 or Level 3 feature. It is that the feature has not been configured, populated, integrated, or validated correctly.
Real-World Example: Steepleton Tire Co.
Selective Pay worked with Steepleton Tire Co. on commercial-card data optimization, including interchange qualification, B2B commercial-card acceptance, and the use of Level 2 and Level 3 transaction data.
The work focused on understanding how eligible commercial-card transactions moved through the existing payment environment, whether the enhanced data required for better qualification was being captured and transmitted correctly, and how the resulting transactions were qualifying at interchange.
That meant looking beyond the quoted processing rate. The review considered the payment workflow, invoice-related data, gateway and processor configuration, and the transaction details needed to support commercial-card optimization.
Why this matters: Commercial-card optimization is not a one-size-fits-all switch. A merchant may already have technology that supports Level 2 or Level 3 data, but the benefit depends on whether eligible transactions are populated, transmitted, and qualified correctly throughout the entire payment path.
Common Reasons Commercial Card Transactions Lose Optimization Opportunities
Businesses can have a processor or gateway that supports enhanced commercial data and still miss optimization opportunities if the transaction is not configured or submitted correctly.
Common causes can include:
- Required Level 2 or Level 3 fields are not being captured
- Sales-tax or customer-code information is missing or formatted incorrectly
- Line-item details are incomplete
- The gateway captures enhanced data but does not pass all of it downstream
- The processor or merchant account is not configured as expected for commercial-card data
- The transaction does not meet the applicable network requirements for the intended qualification category
- Settlement, authorization, or other transaction-handling details affect qualification
This is why businesses should verify the result on actual processing data rather than assuming that a Level 2 or Level 3 setting is working simply because the option exists in the software.
For merchants with meaningful B2B or B2G card volume, a review should compare the payment workflow, gateway configuration, processor setup, and merchant statement to determine whether eligible commercial-card transactions are being submitted as intended.
Which Businesses Should Review Commercial Card Optimization?
Commercial card optimization can be particularly relevant to companies that process meaningful B2B or B2G volume, including:
- Manufacturers and wholesalers
- Distributors and suppliers
- Government contractors
- Building-material and industrial suppliers
- Medical and healthcare suppliers
- Professional and business-service firms
- Equipment companies
- Organizations accepting purchasing cards
- Businesses with high average commercial invoice amounts
Selective Pay works with businesses across a range of industries. Learn more about our approach to manufacturing and wholesale payment processing and government and public-sector payments.
What Can Prevent Better Commercial Card Qualification?
Several issues can prevent a transaction from receiving the intended commercial-card treatment. Examples can include missing enhanced data, incomplete line-item information, gateway limitations, configuration problems, or transaction characteristics that do not meet the applicable network requirements.
That is why the correct solution is not to simply “turn on Level 3.” The entire payment path needs to be evaluated.
The Gateway and Integration Matter
The gateway, point-of-sale system, ERP, invoicing platform, and processor all play a role in how payment information is captured and transmitted.
If the merchant’s software captures the necessary information but the payment gateway does not pass it properly, the enhanced data may never reach the point where it can affect qualification.
Businesses with more complex payment environments should review their payment integration and gateway architecture as part of the optimization process.
Commercial Card Optimization Should Start With the Statement
Before making changes, a business should understand how its commercial-card transactions are processing today.
A merchant statement and transaction-level review can help identify commercial-card volume, current qualification patterns, downgrade or non-optimized categories, and areas that warrant deeper investigation.
From there, the business can determine whether the opportunity is related to enhanced data, gateway configuration, payment workflow, processor setup, or another factor.
Learn more about interchange optimization and how Selective Pay evaluates the complete processing environment rather than focusing only on a quoted rate.
Level 2 and Level 3 Are Tools — Not a Guarantee
Commercial card optimization should be approached carefully. Card-network rules change, qualification depends on multiple factors, and not every commercial-card transaction will qualify for the same program.
The goal is to make sure eligible transactions are being submitted as accurately and completely as possible, then verify the result using actual processing data.
Not Sure How Your Commercial Cards Are Qualifying?
If your business accepts a meaningful amount of corporate, purchasing, government, or other commercial-card volume, Selective Pay can review your current processing environment and help identify potential optimization opportunities.
Industry Sources
Commercial-card data examples and terminology referenced in this article are based in part on Visa’s Supplier Matching Service documentation and current U.S. commercial interchange materials published by the card networks. Qualification requirements are subject to network, processor, merchant, and transaction-specific rules.
- Visa Supplier Matching Service — Level II and Level III data descriptions
- Mastercard U.S. Region Interchange Programs and Rates
