If you run a business that takes cards, you pay for the privilege every single day — and most owners can't say precisely what they pay, or to whom. That isn't a personal failing; the industry is genuinely layered. This guide is the wide-angle tour: what actually happens when a customer taps their card, who takes a cut along the way, and how to evaluate the processor asking for your business.
The Journey of a Transaction
Every card payment makes the same three-stop trip. Authorization happens in the seconds after the tap: your terminal asks the customer's bank, via the card network, whether the money is there. Clearing is the bookkeeping pass, where the day's approved transactions are batched and routed to the right banks. Settlement is when funds actually move — out of the cardholder's bank, through the network, and into your business account, usually within a couple of business days.
The remarkable part is how many parties touch that trip: the customer's issuing bank, the card network, an acquiring bank acting on your behalf, and the processor coordinating it all. Each performs a real service. Each also charges for it — which brings us to the part of the industry that deserves your attention.
Who Charges What
Your monthly processing cost has three ingredients. Interchange is the largest: it's set by the card networks, paid to the customer's issuing bank, and it is the same for every processor — no one can discount it, whatever their marketing implies. Assessments are the networks' own fees, also non-negotiable. The third ingredient is the processor's markup — and this is the only part that's actually up for discussion. When you compare processors, you are comparing markups. Everything else is scenery.
The Three Pricing Models
Flat-rate pricing charges one blended percentage for every transaction. It's simple and predictable, and for very small or sporadic volume that simplicity can be worth it. The trade-off: the flat rate has to be set high enough to cover the most expensive cards, so on ordinary cards you routinely pay more than the underlying cost.
Tiered pricing sorts transactions into buckets — "qualified," "mid-qualified," "non-qualified" — with different rates for each. The processor decides which bucket each transaction lands in, and those definitions live in the fine print. Tiered statements are the hardest to audit, which is rarely an accident.
Interchange-plus pricing passes the network's true cost through untouched and adds a stated, visible markup. Your statement shows both numbers separately, so you always know what the networks charged and what your processor kept. It's the model we use at Triton, and the model we'd recommend even if we didn't — because it's the only one you can independently verify.
Reading Your Monthly Statement
Whatever model you're on, one habit protects you: divide the total fees you paid by the volume you processed. That single number — your effective rate — is the honest summary of your processing relationship, and watching it month over month tells you more than any sales pitch. While you're there, scan for line items you can't explain: annual fees, statement fees, "regulatory" charges, PCI-related penalties. Every one of them has a story, and you're entitled to hear it.
Equipment and Ways to Accept
Acceptance hardware has converged on a few sensible shapes: countertop terminals for fixed checkout lines, mobile readers for work in the field, full point-of-sale systems like Clover when you want payments integrated with inventory, staff and reporting, and online checkout for card-not-present sales. The right answer follows from how you sell — a good processor asks about your counter before recommending what sits on it. Be wary of long equipment leases; over their term they routinely cost multiples of the hardware's price.
Security, Briefly
Three acronyms do most of the protective work. EMV chip acceptance shifts counterfeit-fraud liability away from businesses that use it. Tokenization replaces stored card numbers with useless stand-ins, so a breach of your systems has nothing to steal. PCI DSS is the industry's security standard; compliance is an annual questionnaire for most small businesses, and your processor should walk you through it rather than quietly billing you a "non-compliance" fee for skipping it.
Questions to Ask Any Processor
- What pricing model is this, and will you show me the markup separately from interchange?
- Is there a contract term, an early-termination fee, or a "liquidated damages" clause?
- What will my all-in effective rate look like on my actual card mix?
- Is the equipment purchased, rented month-to-month, or leased — and what does the lease total over its life?
- Who answers the phone when a deposit doesn't arrive — a person or a queue?
A processor comfortable with those five questions is a processor you can work with. One who changes the subject has answered them anyway.
Card acceptance is a cost of doing business, but an opaque bill doesn't have to be. Know the trip your transaction takes, know which slice of the fee is negotiable, and insist on a statement you can read. That's the whole game — everything else is detail.