Payment facilitators: What they are and what you need to know

Key takeaways

• A payment facilitator (payfac) is a service that lets platforms and marketplaces accept payments on behalf of sub-merchants through a single master merchant account, so each seller doesn’t need their own merchant account.

• The payfac model speeds up merchant onboarding, makes compliance simpler, and can turn payments into a revenue stream through transaction fees and FX markups.

• Airwallex acts as a global payfac, letting you accept payments in 180+ countries, onboard sub-merchants, and offer embedded financial services from one platform.

Payment facilitators (payfacs) let you accept payments on behalf of other businesses, your sellers, vendors, or users, without each of them needing their own merchant account.

People often tend to think of payments as backend infrastructure. But, in practice, they can be one of the strongest tools for growth. With the right setup in place, businesses can handle provider relationships, compliance hurdles, and cross-border complexities more efficiently than ever. That’s where payment facilitators (payfacs) come in.

In this article, we’ll break down what a payment facilitator is, how it’s different from processors and acquirers, and how to decide whether you should become one or partner with one.

What is a payment facilitator?

A payment facilitator is a company that holds a master merchant account and lets other businesses, called sub-merchants, process payments through it. Instead of each sub-merchant applying for their own merchant account, which can take days or weeks, they sign up under the payfac’s umbrella and can start accepting payments almost right away.

This means faster onboarding, less paperwork, and more control over the payment experience you offer.

You might also hear the term “merchant aggregator”, which is Visa’s name for the same thing. For platforms and marketplaces, this model means you can offer payment acceptance to your users or sellers as part of your product, instead of sending them somewhere else to set up their own accounts. It gives you a ready-made payment setup that you can customise and launch without building everything yourself.

Examples of payment facilitators

You may have heard of payment facilitators include Square, which lets small businesses accept card payments through its point-of-sale system, and PayPal, which aggregates millions of merchants under its platform.

Stripe works as a full-stack payment service provider that combines processor and acquirer roles, letting online businesses accept payments without separate merchant accounts.

Airwallex serves as a global payfac, too, for platforms that need cross-border payment capabilities.

Each of these companies holds master merchant accounts and onboards sub-merchants beneath them.

How do payment facilitators work?

Payment facilitators sit between your sub-merchants and the wider payments setup, handling everything from transaction processing to compliance. When you partner with a payfac, you get pre-built infrastructure that you can customise around your needs. That makes it much faster to go to market than building everything from scratch.

For platforms, this cuts out the overhead of managing multiple integrations and speeds up seller onboarding. Instead of building complex payout and compliance logic in-house, you rely on the payfac’s infrastructure.

The payfac provides the payment gateway, merchant account, and compliance tools, including Know Your Customer (KYC) checks and Payment Card Industry Data Security Standard (PCI DSS) certification, so you can stay focused on your core product.

What does the payfac transaction flow look like?

Here’s what happens when a customer makes a payment through a payfac model:

• The customer enters their payment details on your platform (or your sub-merchant’s checkout page).

• The payfac processes the transaction under its master merchant ID, routing the payment data to the acquirer.

• The acquirer communicates with the card network (Visa, Mastercard, etc.) and the customer’s issuing bank to authorise the transaction.

• Once authorised, funds are settled to the payfac’s account.

• The payfac distributes the appropriate amount to the sub-merchant, minus any fees.

This flow means sub-merchants don’t need direct relationships with acquirers or card networks. The payfac handles those relationships for them.

How different businesses use payfacs

Platforms usually use payfacs in one of two ways:

• Integrated payments: You accept card payments, local payment methods, and multi-currency transactions directly within your product. A SaaS invoicing tool that lets customers pay invoices without leaving the platform is a good example. This setup is ideal if you want to handle customer payments without sending them to a third-party provider. Tools like Payment Links and embedded checkouts make this easy to implement.

• Merchant onboarding and management: You quickly onboard users or sellers as sub-merchants, manage payouts, and control how funds move between parties. Marketplace payment processing, onboarding sellers and handling their payouts, is the classic use case. This model is common for platforms, marketplaces, and vertical SaaS tools that want to offer payments as part of their service.

What is the difference between payment facilitators, payment processor, and payment acquirers?

These three terms get mixed up a lot, but they mean different things in the payments ecosystem. Once you know the difference, it’s much easier to work out what you need.

Payfac vs. payment processor

A payment processor handles the technical transmission of payment data between banks. It’s the plumbing that moves information from point A to point B. A payfac takes processing and wraps it into a broader service that also includes merchant onboarding, compliance management, and fund distribution. So when you tap your card at a coffee shop, the processor moves the data. The payfac is why the coffee shop could start accepting cards in the first place without applying for its own merchant account.

Payfac vs. acquirer

An acquirer, or acquiring bank, is a financial institution that belongs to card networks like Visa and Mastercard. The acquirer provides the merchant account and takes on certain risks, including liability for chargebacks and fraud. A payfac sits between the acquirer and the sub-merchants, holding the master merchant account with the acquirer and managing the sub-merchant relationships. The payfac is responsible for vetting and monitoring its sub-merchants, whilst the acquirer keeps the connection to the card networks.

Payfac vs. ISO

An ISO (Independent Sales Organisation) resells payment processing services but doesn’t aggregate merchants under a master account. Each merchant the ISO signs up gets their own individual merchant account with an acquirer. A payfac, by contrast, takes on more responsibility for sub-merchant management and compliance, and processes transactions under its own master merchant ID.

Benefits of using a payment facilitator

Using a payment facilitator can help you launch faster, cut operational complexity, and open up new revenue opportunities. The exact benefits depend on how you use the model, but a lot of platforms see value right away.

Faster sub-merchant onboarding

With a traditional model, each seller on your marketplace would need to apply for their own merchant account. That process can take days or weeks and usually involves paperwork, credit checks, and back-and-forth with acquirers. With a payfac, you can onboard them in minutes through automated KYC checks. The payfac has already done the heavy lifting to set up the master merchant account, so your sub-merchants get that infrastructure straight away.

Grow globally with cross-border payments

Payfacs handle local acquiring in multiple markets, so you don’t need separate provider relationships in each country. They support multi-currency transactions and reduce friction at checkout by offering local payment methods, including bank transfers, direct debits, and popular digital wallets. Airwallex, for example, lets businesses accept payments in over 180 countries and supports 160+ local payment methods. Instead of stitching together regional providers, you get global coverage from one platform.

Reduced compliance and security burden

Managing online transactions means complying with international and local payment processing regulations. A good payfac keeps up with changing regulations and handles compliance for you wherever you operate. This includes:

• Payment Card Industry Data Security Standard (PCI DSS)

• Tokenization and encryption

• Know Your Customer (KYC) and Anti-Money Laundering (AML) checks

• Fraud prevention and identification measures

Meeting these standards protects your business from expensive fees and penalties for non-compliance, whilst also protecting you and your customers from fraud and data breaches. The payfac takes on that burden, so you don’t have to become a payments compliance expert yourself.

Better user experience with embedded payments

Payfacs let you embed payments directly into your product, so users never need to leave your platform. Instead of sending your users to a third-party checkout page, you can build the whole payment flow into your platform and keep the experience consistent and branded. That improves conversion rates because fewer steps and fewer redirects usually mean fewer drop-offs. It also strengthens customer loyalty by keeping everything in one place.

Monetise payments as a revenue stream

Many payfacs offer white-label solutions, so you can brand the payment experience as your own. But the bigger opportunity is turning payments from a cost centre into a profit centre. Common revenue models include:

• Transaction fees: Take a percentage of each transaction processed through your platform.

• FX markups: Add a margin on currency conversions for cross-border payments.

• Subscription fees: Charge sub-merchants for access to premium payment features.

• Interchange share: Negotiate a share of the interchange fees with your payfac provider.

All of this comes with automated fund flows and a simplified onboarding experience. You avoid long setup times and complex paperwork whilst still staying compliant with global regulations.

Should you become a payment facilitator? Or, partner with one?

If you’re looking at the payfac model, you have three paths: become a registered payfac yourself, use a payfac-as-a-service provider, or partner with an existing payfac. Each option comes with its own trade-offs around control, cost, and complexity.

Becoming a registered payment facilitator

Becoming a full payfac means registering directly with card networks (Visa, Mastercard) and taking on the compliance, technology, and risk management work yourself. This route suits large platforms with high transaction volumes and dedicated compliance teams. Key requirements include:

• Registering with card networks as a payment facilitator

• Meeting PCI DSS Level 1 compliance standards

• Building or buying the technology stack for transaction processing, sub-merchant management, and reporting

• Investing in KYC/AML processes and ongoing risk monitoring

• Establishing relationships with acquiring banks

The timeline can stretch to 6–12 months, and the upfront investment is significant. But if your platform is processing very high volumes, the economics can make sense because you capture more of the value chain and keep full control over the experience.

Payfac-as-a-service

Payfac-as-a-service is the middle path. You get payfac capabilities, including sub-merchant onboarding, fund distribution, and compliance, without having to go through full card network registration yourself. The payfac-as-a-service provider handles the regulatory burden and maintains the master merchant account, whilst you stay in control of the user experience and branding. It’s like franchising instead of building a restaurant from scratch: you get the brand, the recipes, and the supply chain, but someone else built the kitchen.

Partnering with an existing payfac

This is the simplest route. You use a payfac’s pre-built tools, APIs, SDKs, and white-label solutions, to offer payments without managing any of the underlying compliance or card network relationships. This works best for businesses that want to offer payments but don’t want payments to be their core business. You give up some control, but you gain speed and simplicity.

How to adopt a payment facilitator

Start by defining your payment goals. You might want to lower transaction costs, make global payments simpler, or offer embedded financial services to customers. Then compare payment providers based on their features, compliance support, and pricing to find the best fit.

When you’re evaluating payfac providers, look for:

• Global payment coverage: Can they support the markets you operate in or plan to expand to?

• Compliance and regulatory support: Do they handle KYC, AML, and PCI DSS on your behalf?

• Transparent pricing: Are fees clear, or buried in fine print?

• API and developer tools: How easy is integration with your existing stack?

• Sub-merchant onboarding and management: Can you onboard sellers quickly and manage payouts efficiently?

• Multi-currency and FX capabilities: Do they support the currencies your business needs?

Once you’ve chosen a provider, the implementation process usually follows these steps:

• Partner with your chosen payment facilitator and define the services you need.

• Integrate their tools, payment gateways, APIs, and SDKs, into your platform.

• Customise the checkout experience and any customer-facing features so they match your brand.

• Launch and begin accepting payments or onboarding sub-merchants.

• Monitor performance and financial data using built-in reporting tools.

For embedded finance use cases, where you’re offering financial services to your platform users, the process may need more development support so you can customise the white-label infrastructure and user interface.

Get access to a global payfac with Airwallex

With Airwallex, you can take control of eCommerce payment processing, offer multi-currency accounts to sub-merchants, and support diverse local and international payment methods, all from a single platform. That means faster transactions, fewer cart abandonments, and a frictionless customer experience worldwide.

Unlike traditional providers, Airwallex offers a fully integrated financial ecosystem, including global payment acceptance, FX optimisation, and embedded financial services. By simplifying cross-border transactions and cutting costs, we help businesses expand internationally without the usual operational hurdles.

Frequently asked questions

What is the difference between a payment facilitator and a payment processor?

A payment processor handles the technical transmission of payment data between banks. A payment facilitator wraps processing into a broader service that includes merchant onboarding, compliance, and fund distribution.

What are the risks of using a payment facilitator?

The main risks include higher per-transaction fees compared to direct acquiring, potential account holds during fraud reviews, and less direct control over the payment infrastructure. That’s why it’s important to choose a trusted provider, so you can reduce risk whilst scaling with confidence.

What is an example of a payment facilitator?

Well-known payment facilitators include Square, PayPal, and Airwallex. These companies hold master merchant accounts and let businesses accept payments without setting up their own individual merchant accounts.

Is Airwallex a payfac?

Yes, Airwallex is a global payfac. We provide the infrastructure for businesses to accept payments, onboard merchants, and offer embedded financial services, all whilst managing compliance and risk behind the scenes.