Payment service provider (PSP)

What is a payment service provider?

A payment service provider (PSP) is a company that helps businesses accept, process, and manage electronic payments.

PSPs connect merchants to payment methods, payment processors, acquirers, card networks, banks, wallets, and other financial services needed to complete transactions. Instead of building separate integrations with each provider or payment method, a merchant can use a PSP to accept payments through a single setup.

A PSP may support card payments, bank transfers, digital wallets, local payment methods, mobile payments, direct debit, payouts, reporting, fraud tools, and settlement services, depending on its model and coverage.

How does a payment service provider work?

A payment service provider acts as an intermediary between a merchant and the parties involved in payment processing. When a customer makes a payment, the PSP helps collect and transmit payment data, route the transaction to the right processor or acquirer, receive the approval or decline response, and return the result to the merchant. After the transaction is processed, the PSP may also support settlement, reporting, refunds, chargebacks, and reconciliation.

In many setups, PSPs combine several services that might otherwise require separate providers, such as a payment gateway, processing connection, fraud tools, payment method access, and merchant reporting.

What services does a PSP provide?

The exact services depend on the provider, but a PSP may offer:

• payment gateway functionality;
• card payment processing;
• access to acquirers and payment processors;
• local and global payment methods;
• digital wallets and bank transfer options;
• fraud prevention and risk controls;
• 3D Secure and authentication support;
• refunds and chargeback management;
• settlement and support;
• transaction reporting and analytics;
• reconciliation tools;
• technical integration and API documentation.

Some PSPs focus on one region or payment type, while others support merchants across multiple countries, currencies, and payment methods.

Why do businesses use PSPs?

Businesses use PSPs to simplify payment acceptance and reduce the technical and operational work needed to process payments.

A PSP can help merchants:

• start accepting payments faster;
• access multiple payment methods through one provider;
• reduce the need for separate payment integrations;
• support customers in different countries;
• manage refunds, disputes, and settlements;
• improve payment visibility through reporting;
• add security and fraud prevention tools;
• scale payment operations as transaction volume grows.

For smaller businesses, a PSP can provide a fast way to start accepting payments. For larger merchants, PSPs can become part of a broader multi-provider payment setup.

Payment orchestration vs direct PSP integrations💸 Learn more

PSP vs payment gateway

A PSP and a payment gateway are related, but they are not the same. A payment gateway is software that captures payment details at checkout and sends transaction data for processing. It is mainly responsible for securely transmitting payment information between the merchant and payment processors or acquirers.

A payment service provider offers a broader set of payment services. It may include a payment gateway but can also provide access to payment methods, processing connections, fraud tools, settlement support, reporting, reconciliation, and merchant account services.

In simple terms, a payment gateway helps start and transmit a payment, while a PSP helps manage more of the payment acceptance process.

PSP vs payment processor

A payment processor handles transaction data between merchants, acquirers, issuers, card networks, and payment systems. A PSP usually provides a wider service layer around processing. It may connect merchants to one or several processors, acquirers, payment methods, and operational tools.

In some cases, one company may act as both a PSP and a processor. In other cases, the PSP uses third-party processors and acquirers behind the scenes.

PSP vs acquirer

An acquirer is a financial institution that enables merchants to accept card payments and settle funds into a merchant account. A PSP helps merchants connect to acquiring services and other payment methods. Some PSPs work with multiple acquirers, while others provide access through a specific acquiring relationship or payment facilitator model.

Merchants may work directly with an acquirer, through a PSP, or through a setup that combines both.

How PSPs fit into payment infrastructure

A PSP can be a central part of a business's payment infrastructure, but it is not always the whole setup. As businesses grow, they may work with several PSPs, acquirers, processors, and payment methods to improve coverage, reduce dependence on a single provider, and adapt payment flows to different markets.

In this case, companies often need a central layer to manage provider connectivity, routing, reporting, reconciliation, and payment operations across PSPs. Corefy helps businesses manage this multi-provider setup by unifying PSPs, acquirers, payment methods, and transaction flows into a single payment infrastructure layer.