What is a payment service provider (PSP) and how do they work?

A payment service provider is a third-party company that helps businesses accept various payment methods, including credit cards, debit cards, and digital wallets. It manages almost the entire payment transaction, from the moment a customer submits their information to the final deposit into your account, helping simplify and secure the checkout experience.

If you time-traveled to the Wild West and you told a banker we'd one day press a few buttons on a magic box in our pockets to teleport money instantly from one bank to another, they might think you've spent too much time in the saloon. Thanks to digital payment service providers, this is simply how we pay today.

With more payment choices available than ever, shoppers expect to use their preferred methods wherever they shop. Businesses that offer convenient ways to pay have a clear advantage.

Our guide breaks down what you need to know about payment service providers, including capabilities, benefits, and examples, so your business can deliver low friction checkout experiences, acquire and retain customers, and increase revenue.

Table of contents

  • What do payment service providers do?
  • How does a payment service provider work?
  • Types of payment service providers
  • Payment service providers vs. dedicated merchant accounts vs. payment gateways
  • The benefits of using a payment service provider
  • How your business can prepare for integration
  • Simplify the checkout experience with PayPal

What do payment service providers do?

Payment service providers manage the end-to-end payment process for businesses, including credit and debit cards and digital and alternative payment methods.

Businesses of all sizes can benefit from working with a payment service provider. Here’s what they do:

  • Secure payment communication: A payment processing service provider can help you securely store payments by acting as the digital bridge between a customer's payment information and the banks. It encrypts sensitive data and sends it securely for authorization.
  • Payment authorization: After receiving a payment request, the PSP processor communicates with the customer's bank for approval. This instant communication is key to the entire payment transaction processing flow.
  • Payment processing: A PSP handles the entire card processing journey behind the scenes, supporting that once a transaction is approved, the funds move from the customer's account to the business's account.
  • Fraud and security: Many PSPs offer built-in tools for advanced fraud detection. They use real-time data and analytics to help identify and block suspicious transactions, which can protect both your business and customers.
  • Privacy and compliance: PSPs can help businesses navigate the complexities of data privacy and compliance standards. They work to adhere to regulations such as PCI DSS and GDPR, which can help your business safely handle sensitive customer information.
  • Business services: Many PSPs offer valuable services beyond processing payments, like real-time reporting and customer support. These tools can help your business gain insights into customer behavior and improve operations.
  • International payments: PSPs can help a business expand globally by making it easy to accept payments in different currencies. A bill payment service provider can even streamline regular subscription payments from customers around the world.
  • Convenient payment features: PSP payments can support convenient features like tap to pay, digital wallets, and buy now, pay later options. These features help you meet customer expectations and make checkout easier.

How does a payment service provider work?

Payment service providers simplify online payment processing by connecting merchants, banks, and payment networks. They handle almost every stage of the payment process for you, including card processing, electronic payment processing, and business payment services. This makes it easy for ​​​​businesses to offer multiple payment methods without managing individual merchant accounts.

Traditionally, businesses had to set up their own merchant accounts with a certain bank, which was usually a complex, time-consuming, and costly process. Payment service providers are often easy to set up and cost-effective, making them a particularly beneficial ​​solution for small businesses.

Here are the basic steps PSPs use to help businesses with electronic payment processing:

  • Step 1: Customers enter payment information at checkout on your website, app, or POS system.
  • Step 2: The payment service provider receives the customer's encrypted payment details and sends them securely to the merchant's acquiring bank.
  • Step 3: The acquiring bank forwards the transaction to the customer's bank via credit card networks.
  • Step 4: The customer’s bank approves or denies the transaction and sends a response back to the payment service provider.
  • Step 5: The payment service provider sends the approval or denial message to the business.
  • Step 6: If approved, the payment service provider transfers the funds from the customer’s account to your business account.

All of this happens in seconds, providing a secure, frictionless experience for both the customer and business.

Types of payment service providers

Payment services are constantly changing, so it helps to understand the different kinds of providers to find one that fits your business needs. PSPs typically fall into three main types: traditional, integrated, and specialized.

Traditional payment service providers

Traditional payment service providers primarily focus on in-person transactions and simpler online models. They often require a separate setup for each part of the payment process. These providers include:

  • Merchant account providers: These are banks or financial institutions that provide a dedicated ​merchant account for a business to accept electronic payments.
  • Payment gateways: These systems securely connect a business's website or POS system to the financial institutions that process payments. They encrypt payment information and support it is safely transmitted for processing.

Other traditional solutions include manually handling checks, cash, or mail orders.

Integrated payment service providers

Integrated payment service providers can be categorized by how they connect with a business or by the types of payments they handle. They are often full-service providers that bundle multiple features into one platform. Some examples include:

  • Omnichannel processing: Handles online, in-app, and in-store payments.
  • Card-present and card-not-present payments: Supports POS systems and e-commerce.
  • Digital wallet and mobile payments: ​Works with PayPal, Apple Pay, and Google Pay.
  • Advanced security and software integration: Offers fraud detection, multi-currency support, and syncing with business software like CRMs.

PayPal is a key example of an integrated PSP, enabling businesses to accept a broad range of digital payment options while maintaining security and ease of use.

Specialized payment service providers in commerce

Specialized providers go beyond basic transaction processing to offer a full suite of services tailored to specific needs. For example:

  • Full-Stack PSPs handle the entire payment lifecycle, including gateways, merchant accounts, and fraud protection.
  • Payment gateways securely transmit payment information between banks.
  • Merchant account providers provide accounts for accepting PSP payments.
  • Digital wallet and Buy Now, Pay Later providers focus on mobile wallets and pay later options.
  • Value-added services offer advanced services for niche industries, such as AI-powered fraud detection, currency conversion, reporting and analytics, and regulatory compliance support.

Payment service providers vs. dedicated merchant accounts vs. payment gateways

For many businesses, a payment service provider is a simple way to accept payments. Although PSPs, dedicated merchant accounts, and payment gateways are often used interchangeably, they all work differently. Here's how they compare across setup, stability, pricing, and scale, as well as pros and cons.

Payment service providers vs. dedicated merchant accounts vs. payment gateways.

Payment service providers

Dedicated merchant

Payment gateways

Approval process

Fast approval, little paperwork

Lengthy application with underwriting

Depends on processor, often included in setup

Account stability

Shared, aggregated accounts may not be very stable

Dedicated account offers control and reliability

Not an account, only transmits data

Pricing

Flat, transparent fees

Can be cost-effective for small businesses

Custom rates

May be cheap for high volume

Additional fee on top of processor/merchant account

Processing volume

Suitable for small to mid-sized businesses

Suitable for high-volume or enterprise merchants

Scales with processor and account setup

Pros

Single integration, quick setup, wide range of features

Provide control, tailored rates, long-term stability

Secures and transmits payment data, flexible integrations

Cons

Not controlled very much, pooled funds, strict terms

Complex setup, high costs, management involved

Requires pairing with a processor/merchant account, adds an extra step to setup

The benefits of using a payment service provider

There are many advantages to choosing a comprehensive payment processing software. The right payment service provider to manage your payments helps enhance security, streamline transactions, and meet changing compliance standards.

Here are some of big benefits of working with payment service providers:

Give customers more ways to pay

Shoppers expect a fast and flexible checkout experience and a wide range of payment options. A PSP allows your business to accept almost everything from card processing to digital wallets like PayPal and Venmo, all through a single platform. This can help you expand your reach globally by supporting multiple currencies and providing the personalized experiences shoppers expect.

Stay compliant with less effort

A payment service provider can help you navigate the ever-changing regulatory landscape of online payments. Instead of having to update your tools and processes to meet these regulations manually, you can count on your PSP to maintain compliance with necessary standards like the PCI DSS, which helps you securely store payments and prevent fraud.

Secure every transaction with payment gateways

When a customer purchases a product, their payment information gets transmitted through a payment gateway. PSPs provide built-in security features that encrypt this sensitive data as it travels between the customer’s bank and your business. This helps to protect your business from data breaches and fraud and gives your customers peace of mind.

Streamline payment processing

Payment service providers manage the complexities of online and contactless payments, from authorizations to currency conversions, so you can focus on core operations like sales and marketing. These integrated payment processing software solutions can help a business save time and resources. PSPs may also offer tools to automate invoicing, reporting, and accounting tasks.

Customize checkout experiences

Payment service providers may offer tools to help ​personalize the checkout experience and drive sales. For example, PayPal allows businesses to customize data fields, payment buttons, and colors to fit their brand look. PayPal also helps businesses create mobile-friendly checkout pages so shoppers can purchase from any device.

Leverage data to meet customer needs

Businesses can use their PSP to access detailed, real-time reports and data analytics. They can leverage this data to better understand customer behaviors and preferences and optimize payment experiences to meet their needs.

Improve customer support

PSPs can help automate customer support by managing disputes and chargebacks, potentially saving retailers time and money. Businesses can also use PSPs to make payouts individually or at scale, helping improve customer satisfaction.

How your business can prepare for integration

Many PSPs are easy to integrate. Still, it's a good idea to prepare for this process in advance so you can gather the resources you need to make it as smooth as possible.

To get ready for PSP integration, you may need to take these steps:

  1. Gather necessary documents: You might need to provide information about your business bank account, business license, financial statements, and customer relationship management (CRM) platform.
  2. Plan ahead: Budget time for each phase of the integration process. This could include customizing the setup, creating your account, building the integration, and testing your solution.
  3. Consider hiring a developer: While some PSPs offer no-code options, you may want to hire a developer to execute and oversee the PSP integration process manually.
  4. Take compliance into account: Regulations change often, so make sure your PSP can help you stay compliant with standards like PCI DSS and GDPR. This support helps protect customer data, and build trust.

Simplify the checkout experience with PayPal

As customer preferences and payment technologies evolve, the right payment service provider gives your business the tools to adapt and meet customer needs. This helps your business isn't left behind with nothing but tumbleweeds rolling through your in-store or virtual checkout line.

Business Payments with PayPal Open allows you to safely and securely accept multiple payment methods through a single integration, like PayPal, Pay Later, Venmo, digital wallets, credit and debit cards, and local payment methods.

Learn more about Business Payments with PayPal Open.

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