What Is PayFac? A Guide for US Businesses

If you run a US business that takes payments, you’ve probably run into the limits of traditional merchant accounts. For this reason, platforms turn to payment facilitation. The PayFac model in particular makes it easier to keep payments centralized and integrate them directly into the product.

This guide walks through how the PayFac model works, how it compares to traditional acquiring, and when payment facilitation services make sense for US-based businesses. We'll also discuss the Wise Business account. The global account that can help your company with all things cross-border.

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What Is a PayFac?

A payment facilitator, or PayFac, is a business that enables other businesses to accept card payments without setting up their own merchant accounts.

Instead of each merchant working directly with an acquiring bank, the PayFac manages payments on their behalf through a single account.

The master merchant account (MID)

At the center of the PayFac model is a master merchant account, identified by a merchant identification number (MID).

All card transactions processed through the platform are routed through this master MID, rather than through individual merchant accounts.

This structure allows payments to be activated quickly and managed in one place.

What are sub-merchants?

The businesses using the PayFac’s platform are called sub-merchants.

Rather than opening their own merchant accounts, sub-merchants are onboarded under PayFac’s master MID. This typically involves a shorter application process and faster approval compared to traditional acquiring.

For sub-merchants, this means:

• Fewer direct relationships with banks or processors
• Faster access to card payments
• A more consistent payment experience within the platform

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Why PayFac emerged in the US

The PayFac model gained traction as US-based platforms and marketplaces began onboarding large numbers of merchants.

Traditional merchant acquiring was built for individual businesses, not software platforms managing hundreds or thousands of sellers, service providers, or contractors.

As SaaS companies and marketplaces scaled, they needed a way to activate payments quickly while maintaining control over the experience. PayFacs addressed this gap by centralizing payments under one account while still allowing each sub-merchant to operate independently.

How the Payment Facilitator Model Works

The payment facilitator model changes how payments are accepted and managed by centralizing responsibility under a single entity.

Businesses don’t need to maintain their own acquiring relationship, as the PayFac coordinates payment processing, settlement, and payouts for multiple merchants.

To understand how the model works in practice, it helps to look at the roles involved and how a transaction moves through the system.

Acquirer

The acquirer is the financial institution that processes card transactions and settles funds from the card networks. In a PayFac arrangement, the acquirer sponsors the PayFac and provides access to the card networks.

Rather than underwriting each merchant individually, the acquirer underwrites the PayFac itself. The PayFac is responsible for managing risk and compliance across all sub-merchants operating under its master account.

The acquirer continues to oversee activity at a high level, but day-to-day merchant management sits with the PayFac.

PayFac

The PayFac operates the master merchant account and acts as the primary point of control for payments on the platform.

It manages sub-merchant onboarding, defines payout rules, and determines how funds move through the system. Depending on the model used, the PayFac may also be responsible for compliance checks, transaction monitoring, and chargeback handling.

Because all transactions flow through the PayFac’s account, the platform has greater visibility into payment activity and more control over the end-to-end payment experience.

Sub-merchant

Sub-merchants are the businesses that sell goods or services through the platform.

Sub-merchants are onboarded under the PayFac’s master merchant ID, which typically allows them to start accepting payments faster and with fewer administrative steps.

From the sub-merchant’s perspective, payments are handled within the platform they already use, reducing complexity and keeping payment operations centralized.

Card networks

Card networks, such as Visa and Mastercard, define the rules that govern card payments.

They set requirements around security, data protection, dispute handling, and compliance. Both the acquirer and the PayFac must follow these rules, and the PayFac is responsible for ensuring that sub-merchants comply with them.

These standards help maintain consistency and trust across the broader payments ecosystem.

How a PayFac transaction flows

When a customer makes a card payment through the platform, the transaction is authorized and processed under the PayFac’s master merchant ID.

Once approved, funds are settled to the PayFac rather than directly to the sub-merchant. The PayFac then distributes those funds according to its payout schedule, applying any platform fees or holds before paying the sub-merchant.

This structure separates payment authorization from payout, giving platforms flexibility over when and how merchants receive funds.

Why the model scales for platforms

The PayFac model is designed for scale.

Centralized onboarding makes it easier to activate payments for new merchants without having to repeat the full merchant account setup. Compliance and monitoring can be applied consistently across all sub-merchants, rather than being managed individually.

Embedding payments directly into the product means platforms can support higher transaction volumes, onboard merchants faster, and maintain control over the payment experience as they grow.

PayFac vs Traditional Merchant Acquiring

Payment facilitators and traditional merchant acquiring both enable card payments, but they’re designed for different business models. For US companies, the choice usually comes down to scale, control, and how central payments are to the product.

The table below highlights the core differences:¹

Area	PayFac model	Traditional merchant acquiring
Account structure	One master merchant account with multiple sub-merchants	Each merchant has its own merchant account
Onboarding	Centralized onboarding managed by the platform	Each merchant applies and is underwritten individually
Time to activate payments	Typically faster for new merchants	Often slower, with more documentation
Merchant experience	Payments embedded within the platform	Payments are managed separately by each merchant
Compliance and risk	Largely handled at the platform level	Primarily handled by each merchant
Payouts and settlement	Platform controls timing and fund distribution	Funds settle directly to the merchant
Best fit	Platforms, SaaS companies, marketplaces	Standalone US businesses

Traditional acquiring works well for independent US businesses that operate independently, process payments at a single location, or don’t need to onboard other sellers.

The PayFac model is built for platforms. Centralizing onboarding, compliance, and payouts enables software companies and marketplaces to activate payments quickly while maintaining a consistent merchant experience.

It also shifts more responsibility to the platform. While this increases operational involvement, it gives platforms greater control over how payments work inside their product.

For US companies deciding between the two, the key question is whether payments are a supporting function or a core part of the platform’s value. That answer usually determines which model makes sense.

Types of PayFac Models In the US

Not all PayFac setups work the same way. In the US, platforms typically choose among three models based on the level of control, responsibility, and speed they want when adding payments.

Each option involves a different trade-off between ownership and operational complexity.

Full (registered) PayFac

In a full PayFac model, the platform becomes a registered payment facilitator.

This means registering directly with card networks and working with an acquiring bank to operate a master merchant account. The platform is fully responsible for onboarding sub-merchants and managing how payments flow through the system.

With this model, the platform takes on:

• Sub-merchant underwriting
• Ongoing monitoring and fraud management
• Compliance with KYC, AML, OFAC, and PCI DSS requirements

Because the platform holds this responsibility, it also holds the risk. Chargebacks, fraud exposure, and regulatory compliance ultimately sit with the PayFac.

The benefit is control. A registered PayFac can define onboarding rules, payout timing, pricing structures, and the overall payment experience. For US platforms where payments are a core revenue driver, this model offers the greatest flexibility and long-term monetization potential.

PayFac-as-a-Service (PFaaS)

PayFac-as-a-Service offers many of the benefits of payment facilitation without requiring the platform to register as a PayFac itself.

In this model, a third-party provider handles much of the compliance, risk management, and regulatory overhead. The platform still offers embedded payments to its users, but key responsibilities are outsourced.

This approach typically:

• Reduces upfront compliance and operational burden
• Shortens time to market
• Lowers ongoing risk exposure for the platform

PFaaS is often used by US platforms that want to move quickly or validate payments as part of their product before committing to full PayFac ownership.

Direct integrated payments

Direct integrated payments are often grouped with PayFacs, but they aren’t a true PayFac model.

Here, the platform integrates with a payment processor to enable card payments, while the processor manages settlement and merchant accounts. Merchants may still need individual accounts, even if onboarding feels streamlined.

This option offers:

• Faster setup with minimal compliance responsibility
• Limited control over payouts, pricing, and payment flows

For US businesses, direct integration can work when payments support the product rather than define it. However, it offers less flexibility and monetization compared to true PayFac models.

Why US Companies Use Payment Facilitation Services

Payment facilitation services are most often used by US companies that onboard other businesses and want payments to feel like a built-in part of the product, not a separate system.

While use cases vary, the underlying goals are usually speed, monetization, and stickier products.

Platforms

Software platforms that support third-party businesses use payment facilitation to simplify onboarding and standardize payment processing across their user base.

Instead of asking each business to manage its own payment setup, platforms can activate payments centrally and maintain a consistent experience as they scale.

Marketplaces

Marketplaces rely on payment facilitation to manage transactions between buyers and sellers.

Centralized payments let marketplaces control fund flows, apply platform fees, and manage payouts without requiring each seller to establish a separate acquiring relationship. High seller turnover or seasonal volume makes it particularly important for US marketplaces.

Independent software vendors (ISVs)

ISVs use payment facilitation to embed payments directly into their software and create additional revenue streams.

Rather than referring customers to external processors, ISVs can offer payments as part of their core product and capture value from transaction volume over time.

Vertical SaaS

Vertical SaaS companies often serve industries with specific payment needs, such as healthcare, hospitality, or professional services.

Payment facilitation allows these platforms to tailor onboarding, payouts, and reporting to their industry while keeping payments tightly integrated into daily workflows.

Common benefits across these models

Across US platforms, payment facilitation services are typically used to achieve three outcomes:

• Speed: Faster merchant onboarding and quicker access to payments
• Monetization: New revenue through transaction margins and payment services
• Product stickiness: Payments embedded directly into the platform, increasing long-term retention

For many US companies, payment facilitation turns payments from a backend function into a core part of the product experience.

Compliance and Risk Responsibilities for US PayFacs

Payment facilitation comes with regulatory and operational responsibilities. In the US, these requirements are designed to protect the payments ecosystem, reduce fraud, and ensure funds move securely.²

The level of responsibility a platform takes on depends on whether it operates as a full PayFac, uses PayFac-as-a-Service, or relies on direct integrated payments.

KYC and KYB

Know Your Customer (KYC) and Know Your Business (KYB) requirements are used to verify the identity of sub-merchants.

This typically includes confirming business details, ownership information, and, in some cases, beneficial owners.

• Full PayFac: The platform is responsible for collecting, verifying, and maintaining KYC/KYB data
• PFaaS: These checks are usually handled by the provider, with the platform supplying the required information
• Direct integration: The processor generally performs merchant verification

Anti-money laundering (AML)

AML requirements focus on detecting and preventing illicit financial activity.

Key activities cover screening transactions, identifying suspicious behavior, and escalating issues when needed.

• Full PayFac: The Platform must operate AML control and monitoring processes
• PFaaS: AML obligations are largely managed by the service provider
• Direct integration: AML oversight typically sits with the processor

OFAC screening

In the US, businesses involved in payments must screen against the Office of Foreign Assets Control sanctions lists. That way, funds aren’t sent to restricted individuals or entities:

• Full PayFac: The platform is responsible for OFAC screening and enforcement
• PFaaS: OFAC screening is usually included as part of the managed service
• Direct integration: Screening is handled by the processor

PCI DSS compliance

Payment Card Industry Data Security Standards govern how cardholder data is stored, processed, and transmitted.

The scope of PCI responsibility depends on how deeply the platform handles card data.

• Full PayFac: The platform must maintain PCI compliance for its systems
• PFaaS: PCI scope is often reduced, with compliance shared or managed by the provider
• Direct integration: PCI responsibility largely rests with the processor

Ongoing monitoring and risk management

Compliance doesn’t end after onboarding.

US PayFacs are expected to monitor transaction activity, manage chargebacks, and respond to elevated risk over time.

• Full PayFac: Ongoing monitoring and risk controls are owned by the platform
• PFaaS: Monitoring is typically shared or fully handled by the provider
• Direct integration: Risk management sits primarily with the processor

Making PayFac Work for Your Platform

The PayFac model gives US platforms a way to embed payments, onboard merchants faster, and maintain control over how money moves through their product.

Whether a business chooses to become a registered PayFac, use PayFac-as-a-Service, or rely on direct integration depends on how central payments are to its growth strategy.

For platforms operating across borders, payments don’t stop at card acceptance. Many also need reliable ways to pay sellers or partners internationally. In those cases, Wise can support transparent, cost-effective payouts alongside a broader payment facilitation setup.

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Once you’re set up, you can connect to software such as Wave, FreshBooks, and more. You can also withdraw funds from Stripe without currency conversion fees.

Open a Wise Business account online

Some key benefits of Wise Business include:

Major local account details to receive international payments with ease No monthly account fees just a simple one-off fee for account details Receive payments from e-commerce platforms such as Amazon or via Stripe. Free invoicing tool to generate and send invoices. Create invoices using the Wise invoice generator or invoice templates. Accounting integrations, including a QuickBooks Bill Pay connection. Bill payments will be synced, matched, and categorized in QuickBooks for simple reconciliation. Access to BatchTransfer. Fast payment of up to 1,000 people.

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Sources:

1. Traditional Acquiring vs. Payment Facilitation | Tipalti
2. Traditional PayFac solutions | Stripe