How to Read Your Merchant Statement, Line by Line

The short answer: every merchant statement, whatever the processor, breaks down into three kinds of cost — interchange paid to the card-issuing bank, assessments paid to the card network, and the processor’s own markup and fees. Once you can find those three buckets, you can calculate what you really pay and spot where you’re being overcharged.

Most Orange County business owners we meet have never been shown how to read their statement. That isn’t an accident — confusing statements make it easy to hide markup. This guide walks through a typical statement section by section.

Where Do You Start?

Start with two numbers on the summary page: total card sales (sometimes called “gross sales” or “total volume”) and total fees (sometimes “total discount,” “total charges,” or “fees deducted”). Divide fees by sales and you have your effective rate — the single most useful number on the statement.

For example, $3,100 in fees on $100,000 in card sales is an effective rate of 3.1%. Our fee calculator does the math for you. Keep the number handy — everything else on the statement explains why it’s what it is.

What Is the Summary Section Telling You?

The first page usually shows deposits by day or batch, the total amount processed, refunds, chargebacks, and the fees taken. Pay attention to how fees are collected:

• Daily discount — fees are taken out of each day’s deposit, so deposits are slightly smaller than sales.
• Monthly discount — you receive your full sales each day and one lump sum is debited at the start of the next month.

Neither is better or worse, but knowing which one you have explains why your bank deposits don’t match your sales report.

What Are Interchange Fees?

Interchange is the largest part of your cost, and it goes to the bank that issued your customer’s card — not to your processor. Visa, Mastercard, and Discover publish their interchange rates, and they vary by card type and how the card was taken. A swiped or tapped consumer debit card costs far less than a rewards credit card keyed in over the phone. Business and international cards cost more still.

On a transparent statement, you’ll see interchange broken out by category with names like “Visa CPS Retail” or “MC Merit III.” Nobody can lower interchange itself, but how a transaction is processed determines which category it lands in.

What Are Assessments and Network Fees?

Assessments are small fees charged by the card networks themselves, usually a fraction of a percent of volume plus small per-transaction fees with names like “NABU,” “Acquirer Processing Fee,” or “Network Access Fee.” Like interchange, these are pass-through costs that every processor pays. They should appear at cost.

Where Is the Processor’s Markup?

Everything left over is your processor’s revenue. It’s usually some combination of:

• A percentage markup on volume (for example, 0.30%).
• A per-transaction fee (for example, $0.10 per sale).
• Monthly fees — statement, account, gateway, PCI program, terminal rental, or minimum-processing fees.
• Annual or quarterly fees that show up only once and are easy to miss.

On interchange-plus pricing, the markup is listed separately and you can see exactly what your processor earns. On tiered pricing, transactions are sorted into “qualified,” “mid-qualified,” and “non-qualified” buckets with bundled rates, and the markup is hidden inside them. On flat-rate pricing, one rate covers everything.

Which Line Items Should Raise a Red Flag?

• “Non-qualified” or “mid-qualified” surcharges on most of your volume — a sign of tiered pricing that pushes routine cards into expensive tiers.
• PCI non-compliance fees every month — often avoidable by completing a short annual questionnaire.
• Vague fees such as “regulatory,” “compliance,” “service,” or “network” fees that don’t match any card-network fee name.
• Rate increases mentioned only in a one-line message at the bottom of a statement.
• Terminal leases that have outlasted the equipment’s value — some run four years with no cancellation.

We cover the most common ones in detail in 5 Hidden Fees in Payment Processing (and How to Spot Them).

How Do You Know If You’re Overpaying?

Compare your effective rate to what interchange and assessments alone would cost for your card mix. The gap is your processor’s markup. A reasonable markup depends on your volume, average ticket, and industry, but if you can’t find the markup at all, or it’s larger than the interchange on a meaningful share of your transactions, you’re likely overpaying.

That’s what our free statement review does. We separate every line on your statement into those three buckets and show you, in plain numbers, what you pay your processor today and what a fair arrangement would cost.

Frequently Asked Questions

What is a good effective rate for credit card processing?

It depends on your card mix and how cards are taken. In-person businesses with lots of debit cards usually run lower than online businesses with many rewards cards. The best test is comparing your effective rate to your actual interchange cost, which is what a statement review does.

Why does my statement change every month?

Your effective rate moves with your card mix. A month with more rewards, business, or international cards will cost more even if your pricing hasn’t changed. Big jumps without a change in your sales mix are worth investigating.

Can my processor lower interchange?

No processor can change the interchange rates set by the card networks. What a processor controls is its own markup and fees, and whether transactions are processed in a way that qualifies for the lowest interchange category available.

What if my statement doesn’t show interchange at all?

That usually means tiered or flat-rate pricing, where interchange is bundled into your rate. You can still calculate your effective rate, and a review can estimate how much of it is markup.