Level 2 and Level 3 Data: How B2B Merchants Cut Interchange Costs
The Interchange Discount Most B2B Merchants Miss
If your business accepts corporate, purchasing, or government cards, you may be leaving real money on the table without knowing it. Your total credit card processing fees are made up of two parts — wholesale interchange and your processor's markup — and interchange is usually described as fixed and non-negotiable. Yet Level 2 and Level 3 data is one of the few legitimate ways to reduce the interchange portion of those credit card processing fees. The card networks offer significantly lower interchange rates for credit cards in these categories — but only when you submit extra transaction details known as Level 2 and Level 3 data.
Most merchants never qualify, because their processor never set them up to send that data. The result is that business and government cards "downgrade" to the most expensive interchange categories, quietly inflating the effective rate.
What Are Card Data Levels?
Every card transaction carries data. How much data you send determines which interchange rate applies.
So what are credit card interchange fees, exactly? Interchange is the wholesale portion of your cost — the fee the card networks set and collect on every sale. That is the key difference between processing fees and interchange fees: interchange goes to the bank that issued the card, while your processor's markup is what you actually negotiate. The average interchange fee on a consumer credit card is higher than on a basic debit card, and business or government cards can run higher still unless you send richer data.
Level 1 — Standard
This is the basic information on a typical consumer card sale:
- Card number
- Expiration date
- Transaction amount
Almost every business operates at Level 1. For consumer cards, that is fine. For business and government cards, it is the most expensive way to process.
Level 2 — Business Card Detail
Level 2 adds a few more fields that matter to business cardholders:
- Sales tax amount
- Customer code or purchase order number
- Tax identification details
When these fields are present and valid, qualifying commercial cards drop to a lower interchange tier.
Level 3 — Line-Item Detail
Level 3 is the most detailed and unlocks the lowest interchange rates. On top of Level 2, it includes line-item data for each product:
- Item descriptions
- Quantities
- Unit prices
- Product or commodity codes
- Freight and duty amounts
This level is designed for B2B, wholesale, and government purchasing, where buyers need detailed records for accounting and procurement.
How Much Can You Actually Save?
The gap between standard interchange and Level 3 interchange on a commercial card can be substantial — often a meaningful fraction of a percent on every qualifying transaction. For a business with a high share of corporate or government card volume, that difference adds up quickly across a year — and much of it hides in these downgraded categories, where your merchant processing fees quietly climb.
The catch is that the savings only apply to the volume that runs on eligible business, corporate, purchasing, and government cards. If most of your customers pay with ordinary consumer cards, Level 2 and Level 3 data will not change much. This is why it matters most for B2B sellers, wholesalers, professional services, and anyone selling to government agencies.
Why You Might Not Qualify Today
Three things have to line up:
- Your processor must support it. Not every account is configured to transmit Level 2 and Level 3 fields.
- Your software must capture the data. Your point-of-sale, gateway, or invoicing system has to collect tax, PO numbers, and line items.
- The data must be accurate. Incomplete or malformed fields cause the transaction to downgrade anyway.
If any link is missing, the card processes at standard interchange and you pay the higher rate — even on a purchasing card that was eligible for the discount.
How to Tell If You Are Overpaying
Pull a recent statement and look at your commercial and corporate card transactions. If you see business cards landing in high-cost interchange categories, or a large share of "non-qualified" or "downgraded" volume on B2B sales, that is a strong sign you are not sending the data needed to qualify. In that situation, part of your credit card merchant charges may be a card processing fee you could avoid by sending richer data.
This is closely related to the downgrade problem we cover in our guide to the hidden fees on your processing statement. Downgrades are one of the most common and least understood drivers of a high effective rate.
The Bottom Line
Level 2 and Level 3 processing is one of the few ways to lower the interchange portion of your costs — the part everyone tells you is non-negotiable. It will not help every business, but for B2B and government-facing merchants it can be one of the biggest available savings, and most never have it turned on.
Wondering if your business card volume is being overcharged? Upload your statement and we will identify whether you qualify for Level 2 and Level 3 savings and how much it could be worth. Learn what a good effective rate looks like or see our plans.