Short answer
A payment gateway is the software that securely captures and transmits a customer’s payment data from your checkout or POS to the payment network. A payment processor is the backend service that routes that authorization request between the gateway, card networks, and banks and then handles clearing and settlement.
Key differences
- Role: Gateway = data capture and encryption; Processor = routing, authorization, clearing, and settlement.
- Connectivity: Gateways integrate with your website or terminal; processors connect to card networks and acquiring banks.
- Business relationship: Gateways are typically technology providers; processors or acquirers maintain banking relationships and manage fund movement.
- Focus: Gateways emphasize integration, tokenization, and security; processors focus on transaction routing, fees, and risk management.
Why it matters
Understanding the distinction helps you choose the right setup: one vendor that provides both services or separate specialists. When evaluating options, confirm which role each provider performs, how they handle tokenization and reporting, and whether they’re compatible with your merchant account and card networks.