A payment processor is a company or technical service that handles the movement of transaction data between merchants, payment gateways, acquirers, issuers, and card networks. It helps authorise, process, and settle card payments and other electronic transactions.
A payment processor acts as a technical intermediary in the transaction flow. It sends payment data to the relevant banks and networks, receives the authorisation response, and helps complete the transaction according to the payment method and provider setup.
Payment processors are provided by PCI DSS-compliant organisations held to standards set by credit card associations (Visa, Mastercard, etc.). They can legally provide merchants with comprehensive payment processing services, including security solutions, chargeback management, merchant accounts, customer support, and equipment for card acceptance in brick-and-mortar stores.
Payment processing is the broader process that moves a transaction from the customer’s payment attempt to authorisation, approval or decline, clearing, and settlement.
The main payment processor's task is to receive a customer's credit card information from a payment gateway and send it to the financial institutions involved in the transaction. Basically, a payment processor acts as an intermediary between a customer, the issuing bank, the merchant, and the acquiring bank.
Going into the essence, the main payment processor functions are:
The payment processor works closely with a payment gateway. In payment processing, a payment gateway is responsible for collecting, encrypting, and transferring payment information to a payment processor, which then routes this data among other payment-processing participants and sends approval/rejection back to the payment gateway.
To accept online card payments, a business needs both a gateway and processing functionality. These may come from separate providers or be bundled into a single PSP, payment facilitator, payment aggregator, or acquiring solution. A payment gateway and a payment processor work together, but they are not the same.
In many modern payment setups, one provider may offer both gateway and processing services, so merchants may not always see them as separate tools.
With the massive transition of businesses to online operations in recent years, many payment service providers have emerged, offering a range of services to both start-up merchants and large online businesses. Depending on the business model, a merchant may access payment processing through a direct processor, a payment service provider, a payment facilitator, a payment aggregator, or an acquirer. Each setup differs in onboarding, control, pricing, settlement, risk management, and provider responsibility.
A payment processor focuses on processing transaction data and communicating with banks, card networks, and payment systems.
A payment service provider (PSP) usually offers a broader package of payment services. This may include a payment gateway, processing, merchant onboarding, access to payment methods, reporting, fraud tools, settlement support, and sometimes access to acquiring services.
In simple terms, a processor handles the transaction flow, while a PSP often combines processing with the tools and services merchants need to accept payments.
Corefy helps businesses connect and manage multiple payment processors, PSPs, acquirers, and payment methods through one payment infrastructure layer. This gives payment teams more flexibility to route transactions, monitor performance, and manage payment operations across providers.
