Card Transaction Routing & SettlementPayment Processor
Payment Processor — Definition & Guide
A payment processor is the technology company that routes card transactions between your terminal or software, the card networks, and the issuing bank. They handle authorization, settlement, reporting, and support — and they set the markup on top of interchange that appears on your monthly statement.
Your processor is who you call when something goes wrong, where your statement comes from, and what determines how much you pay above the base cost of card acceptance. Choosing the right processor — on the right pricing model, with the right contract terms — is one of the most consequential decisions a merchant makes.
Every card transaction moves through this chain in seconds:
- Customer presents card at your terminal or enters card data online
- Your terminal or gateway sends transaction data to your processor
- The processor routes the request to the appropriate card network (Visa, Mastercard, etc.)
- The card network contacts the issuing bank for authorization
- The issuing bank approves or declines and sends the response back through the network
- Your terminal receives the approval code and the transaction completes
- At end of day, your processor handles settlement — moving funds from the issuing bank to your merchant account
According to the Federal Reserve’s payment system data, billions of card transactions move through this infrastructure every year — each one priced according to the terms your processor sets.
Not always — and the distinction matters. The acquiring bank is the financial institution that holds your merchant account and accepts card transaction risk on your behalf. The payment processor is the technology layer that routes and manages those transactions.
Some companies serve as both processor and acquirer — large institutions like Chase Merchant Services or Bank of America Merchant Services. Others are pure technology processors that partner with a separate acquiring bank. Either model works, but knowing which entity holds your funds and which handles your support matters when something goes wrong.
Not all processors are built the same. The key variables to compare:
- Pricing model — Interchange-plus pricing shows you exactly what each card costs. Tiered and flat-rate pricing obscure the real cost.
- Contract terms — Month-to-month agreements give you flexibility. Multi-year contracts with early termination fees lock you in regardless of service quality.
- Support quality — Can you reach a person when a chargeback comes in? Is your rep’s number a direct line or a call center queue?
- Hardware and software compatibility — Does the processor integrate with your POS system, e-commerce platform, or accounting software?
The CFPB’s guidance on payment services agreements outlines what merchants are entitled to in writing — review your processor agreement against those standards before signing.
Not always. Some companies serve as both processor and acquirer. Others are technology processors that work alongside a separate acquiring bank. Your statement and support come from the processor — your funds are held by the acquirer.
Compare on pricing model (interchange-plus preferred), contract terms (month-to-month preferred), support quality, and hardware and software compatibility with your existing setup.
Yes. Most merchants can switch with 30 days notice — check your contract for early termination fees. Month-to-month agreements make switching straightforward with no penalty.
Not Sure If Your Processor Is Giving You a Fair Deal?
Send us your last processing statement. We will show you exactly what your processor is charging above interchange, whether the pricing model makes sense for your volume, and what a different structure would cost. If your current processor is the right fit, we will tell you that too — and explain why.
Request a Free Statement ReviewNo obligation • No pressure • Response within one business day