Marketplace payment processing: how to choose the right provider in the UK (2026 guide)

Key takeaways

• Marketplace payment processing takes care of the complex flow of money between buyers, sellers, and your platform, including split payments, multi-currency conversion, escrow, and payouts.

• When you're choosing a provider, focus on split payment flexibility, cross-border FX costs, compliance automation, payout options, and API quality.

• Airwallex processes payments in 180+ countries and 130+ currencies, with like-for-like settlement and low-cost FX built for global marketplaces.

Over two thirds of the world's eCommerce sales happen on marketplaces.¹ If your business decides to use them, you can gain access to customers around the world, and reach a scale you wouldn't normally be able to on your own.

Yet, one of the hardest parts of selling on a marketplace is the financial setup behind it. Your platform needs to process multiple currencies, geographies, and payment methods, manage vendor and customer accounts, and handle payouts. Luckily for you, the right fintech partner can make all that complexity feel much more manageable.

This guide to marketplace payment processing covers how it works, what features to look for, and how to choose the right provider for today and the future. Let's get started.

What is marketplace payment processing?

Marketplace payment processing is the financial setup that lets platforms take payments from buyers, hold funds, take commission, and pay sellers. If a business sells direct to consumers, payments are simple. The customer pays for a product, then you receive the funds.

For a marketplace, it's more complicated. Instead of D2C, the marketplace is B2B2C.

There's a lot to manage. You have to think about:

• Payment processing for vendors and their customers

• Accounts and balances for vendors and their customers

• Split payments, so you can take commission from sales

• Payouts to vendors after funds have cleared and settled

• Multi-currency, location, and payment method processing

All of this should run in-platform, using embedded financial services. Otherwise, you'll interrupt every checkout or payout process by sending users off to a third-party site.

How marketplace payments work (the four-step flow)

Every marketplace is different, but the core payment flow usually follows the same pattern. It starts with a sale, handled by either your white-labelled payment gateway or a third party. Then:

• The transaction is verified and authorised, then processed by your payment processor.

• The payment is sent to a holding account (sometimes called a merchant account, though it's not the same as a traditional merchant account. Think of it as an escrow-style account that stores funds until the payment clears). If buyers and sellers use different currencies, your processor will convert currencies automatically. Or, if your processor offers multi-currency support, the payment can be held in its original currency and converted on demand.

• Some platforms hold the payment in escrow until the order is marked as completed or delivered.

• After the escrow period passes, you release the funds to the merchant, in their currency of choice, minus your platform and processing fees.

To make this more concrete, check the visual below to see what this process looks like for a US to Australia sale (and vice versa).

Now that you've seen the flow, here's what to look for in a provider that handles it well, starting with how your sellers get paid.

Payout options for marketplace sellers

Payouts are how sellers get their money out of your marketplace. There are three main methods:

• Real-time payouts: Sellers receive funds as soon as they're cleared and settled. This matters more and more for seller retention, because faster access to cash means better cash flow for their business.

• Card and bank payouts: Funds go to prepaid cards or straight into a bank account. In the UK, this usually uses Faster Payments; in Europe, SEPA transfers are common.

• Scheduled payouts: Automatic transfers on a regular schedule, daily, weekly, or monthly, depending on what works best for the seller's bookkeeping.

Here's a simple example: a seller on your platform completes an order on Monday. With instant payouts, they receive funds the same day. With weekly scheduled payouts, the money arrives the following Monday.

Offering flexibility here can give you a real competitive advantage when you're trying to attract and keep sellers.

Key features to look for when choosing a marketplace payment provider in the UK

Marketplaces are their own kind of ecosystem. What you need will depend on the type of vendors you have, your sales volumes and values, and lots of other factors.

But the basics are still the basics. Any good marketplace payment provider should give you the following features.

Payment methods your marketplace should support

The payment methods you offer directly affect conversion rates. At a minimum, support major card networks (Visa, Mastercard, Amex) and digital wallets (Apple Pay, Google Pay). Bank transfers are essential for higher-value B2B transactions.

For guidance on which options suit B2B marketplaces, see which buyer payment options your B2B marketplace should offer.

If you sell cross-border, and most successful marketplaces do, local payment methods become critical. European buyers expect options like iDEAL (Netherlands), Bancontact (Belgium), and Klarna for buy now, pay later. Offering these can be the difference between a completed sale and an abandoned cart.

Remember, every one of the top six sites for cross-border purchases is a marketplace.² Your buyers are already global, so your payment methods should be too.

Compliance and seller onboarding

When a new seller joins your marketplace, your provider should automatically run KYC checks, verify their identity, and set up their payout account, all without the seller leaving your platform. This isn't only about convenience. It's a regulatory requirement.

For UK marketplaces, key compliance considerations include:

• KYC/KYB: Identity verification for individual sellers (KYC) and business sellers (Know Your Business)

• PSD2/SCA: Strong Customer Authentication requirements for European transactions

• PCI DSS: Card data security standards, which your provider should handle for you

• DAC7: EU tax reporting requirements for platforms, which affect UK marketplaces with EU sellers or buyers

The right provider handles most of this complexity for you, so you can focus on growing your marketplace instead of trying to navigate marketplace regulatory requirements.

API quality and developer experience

A good API should let you create accounts programmatically, trigger payouts, and handle refunds at scale. But the API itself is only part of the picture. You also need:

• Clear documentation: Well-organised API documentation with practical examples, not just technical specifications

• Sandbox environments: Test environments where you can experiment without affecting real transactions

• Integration speed: How quickly can you go from signing up to processing your first payment?

• Ongoing support: Access to technical support when you hit edge cases or need to build custom flows

If your team doesn't have deep developer resources, look for providers that offer pre-built integrations and no-code options alongside their API.

With those features in mind, there's one area worth looking at more closely: how your provider handles cross-border payments and foreign exchange.

Cross-border payments and FX for global marketplaces

Cross-border transactions are the norm for successful marketplaces, not the exception. Your buyers might be in Germany, your sellers in the US, and your platform headquartered in the UK. Each transaction can involve multiple currencies, and that's where costs can quietly eat into your margins.

How FX costs affect your margins

These cross-border fees add up quickly. A 2% FX markup on US$1 million in monthly cross-border volume costs you US$240,000 a year. That's money that could be going to your sellers, your platform, or your growth initiatives.

Like-for-like settlement and multi-currency accounts

The answer is like-for-like settlement: collecting and holding funds in the original transaction currency instead of converting them straight away.

Imagine a UK marketplace where a US buyer pays in USD. With like-for-like settlement, that USD goes straight into your USD account. You can use it to pay US-based sellers, fund USD refunds, or convert to GBP when the rate suits you, instead of being forced to convert right away at whatever rate your provider offers.

To do that, you need multi-currency accounts: the ability to hold balances in multiple currencies at the same time. Not all providers offer this, and for marketplaces with international ambitions, it's one of the biggest differentiators. When you're comparing providers, ask directly about like-for-like settlement and multi-currency holding capabilities.

Top marketplace payment providers compared (2026)

Your choice of payment processor shapes how your marketplace runs day to day. Choosing the right marketplace payment processing provider in the UK depends on where your marketplace is now and where it's going.

A Series A startup with UK-only sellers has different needs from an established platform expanding into Asia. You can also compare options in this complete guide to marketplace payment gateways.

Here's a look at some of the main providers, along with a comparison to help you narrow down your options. For a broader overview of marketplace payment solutions, see this complete guide to marketplace payment solutions.

Airwallex

Marketplaces that choose Airwallex get access to 60+ global financial licences, processing for 160+ global payment methods, and payment collection in 130+ currencies. We built our platform for global businesses. More than 150,000 businesses use Airwallex, processing more than US$150 billion in annual payment volume.

One of the main things to know about Airwallex is that we provide multi-currency accounts. That means, for example, that you can collect payments in USD as a UK business and use those dollars to pay suppliers, fund refunds, or exchange to GBP only when you need to, or when exchange rates are best. This like-for-like settlement approach helps prevent the doubled FX fees that eat into margins with other providers.

Stripe Connect

Stripe Connect offers customised payments solutions and is known for comprehensive API documentation and robust developer tooling. If your team has strong developer resources and wants maximum control over the payment experience, Stripe's flexibility is a big advantage.

The trade-off is that you'll need ongoing developer time to maintain and improve your integration. If you're comparing both options, here's how Stripe and Airwallex compare on fees and global coverage.

Adyen

Adyen provides end-to-end payment processing with advanced risk management and data analytics capabilities. Their marketplace solution offers local payment methods in 100 countries. Adyen is geared towards enterprise-scale businesses with high transaction volumes and the resources to manage a more complex integration.

PayPal for Marketplaces

PayPal for Marketplaces helps platforms onboard sellers quickly and supports split payments, seller onboarding, and global compliance out of the box. Many consumers already have PayPal accounts, which makes checkout fast and familiar.

But fees can be higher than with other providers, especially for cross-border transactions. That's something to include in your margin calculations.

Checkout.com

Checkout.com has a strong global presence. It supports various payment methods and currencies and offers features including split payments, dynamic currency conversion, fraud prevention, and compliance tools.

Their services are geared more towards enterprise clients with complex requirements and the volume to justify enterprise-level pricing. If you're looking into Checkout.com alternatives, it's worth comparing global coverage, FX costs, and payment method support.

Mangopay

Mangopay is a European payment solution designed specifically for marketplaces, crowdfunding platforms, and fintechs. It supports payments in multiple currencies and includes tools for KYC, escrow accounts, and split payments. Mangopay is deeply embedded in the European financial ecosystem, so platforms operating outside Europe, or looking for broader global reach, may need to combine Mangopay with other providers.

Why Airwallex works for global marketplaces

Airwallex handles payment processing in 180+ countries and 130+ currencies. But that's only the starting point. When you work with us, you also get:

• Programmatic account creation: Automate seller onboarding so new vendors can start selling faster

• Like-for-like settlement: Collect in the buyer's currency, pay out in the seller's currency, and avoid doubled FX fees

• Low-cost FX: Competitive rates when conversion is needed, with transparent pricing

• Flexible split payments: Automatically or manually split funds between your platform and sellers

• FCA-compliant customer lifecycle: Built-in compliance so you can focus on growth

Our aim is to provide the financial setup that any growing business needs, and that includes your customers as well as your own business.

If you want to know a bit more, you can watch a demo in your own time. If you're ready to get started, you can join Airwallex right now.

Frequently Asked Questions (FAQs)

How fast are GBP payouts from a marketplace?

A typical card payment takes one to three days to process, settle, and clear. Once that's done, you'll receive your payout based on your agreed schedule.

If you choose instant payouts, you'll receive your GBP as soon as each payment clears. If you're on a weekly schedule, the money arrives on your next payout day.

Who handles FCA compliance for UK marketplaces?

If you're using an embedded finance provider (like Airwallex), the FCA compliance sits with them. That's because you're using their products, systems, and services, even if it's hidden under your own branding.

What is a marketplace payment?

A marketplace payment is a transaction where the platform collects funds from a buyer, deducts its commission, and distributes the rest to the seller. It usually includes an escrow step where funds are held until the order is confirmed.

How do split payments work in a marketplace?

Split payments automatically divide a transaction between the marketplace and the seller. When a buyer pays £100 and your commission is 15%, the processor routes £85 to the seller and £15 to your platform account.

What payment methods should a marketplace support?

At a minimum, support major card networks (Visa, Mastercard), digital wallets (Apple Pay, Google Pay), and bank transfers. If you sell cross-border, add local payment methods like iDEAL, Bancontact, or Klarna to increase conversion in those markets.

Sources and references

1. https://www.bcg.com/publications/2024/the-rise-of-the-b2c-specialty-marketplace

2. https://www.statista.com/statistics/878623/digital-retailers-digital-buyers-cross-border-digital-purchases/