Running an Ecommerce Website? You’re Probably Overpaying on Every Transaction

Not every UK ecommerce business runs on Shopify or WooCommerce. Some are on Wix because it was the quickest way to get started. Some are on Magento because the business outgrew simpler platforms. Some are on BigCommerce, PrestaShop, or a completely custom-built system because no off-the-shelf solution quite fitted the brief.

Whatever the platform, the payment problem is the same. Your customers pay. Your payment processor takes a cut. The money gets converted somewhere along the way. It lands in your bank account — in GBP, after fees and exchange rate margins have been applied — and you probably have only a rough idea of what it actually cost to get it there. Then you pay your suppliers. More FX. More bank charges. More margin quietly disappearing.

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What Most eCommerce Website Owners Are Currently Using

UK ecommerce businesses not on Shopify or WooCommerce tend to process payments through one of three routes: a third-party payment gateway (Stripe, PayPal, Braintree, Worldpay), a platform’s built-in payment solution (Wix Payments), or a bank-provided merchant account. Each comes with its own fee structure — and most share the same core problem: they were not designed for a world where your customers are global, your suppliers are overseas, and every currency conversion is a cost you could be avoiding.

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The Real Cost of Accepting International Payments

The headline processing fee is just the starting point. The full picture looks quite different once international customers are in the mix.

Wix Payments

Wix Payments is the default for Wix ecommerce stores — straightforward to set up, but one of the more expensive options. The 2% currency conversion fee is automatic and unavoidable on every international sale where the customer pays in a different currency from your payout currency. There is no way to hold foreign currencies or choose your conversion timing.

Stripe (via API or plugin)

Stripe is the most common choice for custom-built sites and developer-led platforms. More flexible and generally cheaper than Wix Payments, but still subject to the same international cost creep. For a custom-built ecommerce site processing a mix of UK and international transactions, the blended rate is often well above the 1.5% headline figure once international cards and currency conversion are factored in.

PayPal

Still widely used across ecommerce platforms. PayPal’s FX markup — built into the exchange rate rather than shown as a separate fee — is one of the more expensive conversion mechanisms available, applying automatically on every cross-border transaction. International transactions cost 4.19% + £0.30, with an additional FX markup typically of 2.5%+.

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Beyond the Checkout: Where Else Are You Losing Money?

Managing Your Funds

Every euro, dollar, or Australian dollar that lands in a standard UK GBP bank account gets converted automatically — at the bank’s exchange rate, which is typically 2–3% above the real mid-market rate. You do not see this charge separately. It is simply built into the rate you receive. Over a year, for an ecommerce business with meaningful international revenue, this invisible conversion cost can run into thousands of pounds. And once converted to GBP, your flexibility is gone — if you need foreign currency later, you pay the markup again to convert back out.

Paying Your Suppliers

Most ecommerce businesses source from overseas — Chinese manufacturers, European distributors, US software platforms, international fulfilment centres. Every payment to a foreign supplier is another FX event. The double-conversion problem is particularly acute: you receive euros from a European customer, your payment processor converts them to GBP, your bank holds them in GBP, and then you convert GBP back to USD or CNY to pay your factory. You have paid FX costs twice — on money that could have stayed in the right currency the entire time.

Both Airwallex and WorldFirst solve this. Airwallex lets you hold 20+ currencies and pay suppliers directly from the right wallet. WorldFirst goes further for one specific but very common use case: paying Chinese suppliers. Because WorldFirst is part of Ant Group — the parent company of Alipay and MYbank — it routes payments through local Chinese banking rails rather than SWIFT. Around 90% of payments to China clear on the same business day, at no extra cost. If your factory is in Guangzhou or Shenzhen, that difference matters.

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A Smarter Approach: What Airwallex Offers eCommerce Website Owners

Airwallex is an FCA-regulated financial platform (FRN: 900876) built specifically for businesses operating across borders. Regardless of which ecommerce platform you use, the multi-currency account, FX management, and supplier payment tools are fully available and deliver significant value independently of checkout integration.

Multi-Currency Account — the Core Benefit

Airwallex gives you one account that holds 20+ currencies simultaneously — GBP, USD, EUR, AUD, HKD, SGD, CAD, CHF, JPY, NZD, CNY and more. You also receive local bank account details in multiple currencies: a USD routing number, a EUR IBAN, a GBP sort code. Revenue arrives in the currency it was paid in. You decide when — and whether — to convert, at rates starting from 0.5% above mid-market rather than the 2–3% your bank charges.

Paying Suppliers — the Double Conversion Eliminated

Airwallex supports outbound payments to 200+ countries across 90+ currencies. Where local payment rails are available — ACH for the US, SEPA for Europe, Faster Payments for the UK — transfers are faster and often free. If you already hold the currency your supplier needs, you send it directly from your wallet — zero conversion fee, no SWIFT charges for supported corridors. The double-conversion problem disappears when money simply stays in the right currency throughout.

Corporate Cards for Business Spending

Airwallex physical and virtual corporate cards draw directly from your multi-currency wallet with no international transaction fees. Pay for Google Ads in USD, Meta Ads in EUR, cloud hosting in USD, design tools, marketing services — from the right currency balance, without converting from GBP each time.

Checkout Integration — Platform Dependent

Wix — Airwallex does not currently have a native Wix Payments integration for checkout. Wix ecommerce businesses benefit most from the multi-currency account, FX management, and supplier payment tools. Magento — Airwallex supports Magento via its payment plugin, allowing full checkout integration. BigCommerce — Integration is available via Airwallex’s API. Custom-built platforms — Airwallex offers a full API, embedded checkout elements, and a hosted checkout page that developers can integrate into any custom environment. Many businesses on custom platforms use Airwallex for financial management while keeping their existing checkout processor — and still eliminate the majority of their FX costs.

Security and Compliance

Airwallex is PCI DSS, SOC 1, and SOC 2 compliant. It includes an AI-powered fraud engine trained on millions of transactions and Smart 3DS optimisation that automatically determines when strong authentication is needed — reducing friction for genuine customers while protecting against fraud.

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Is Airwallex Safe for My eCommerce Business?

Airwallex (UK) Limited is authorised and regulated by the Financial Conduct Authority as an Electronic Money Institution (FRN: 900876). Under FCA rules, all customer funds must be held in segregated accounts at major licensed banks — ring-fenced from Airwallex’s own operating money. This is a legal requirement, not a discretionary policy.

Airwallex is not a bank and funds are not FSCS-protected — unlike a UK bank where deposits up to £85,000 are government-guaranteed. Airwallex’s safeguarding operates under EMI regulation, the same framework as Wise, Revolut, and PayPal. For ecommerce businesses, Airwallex works best as an active payments and treasury account rather than a place to park large, long-term cash reserves. Most businesses use it alongside their existing bank account, not instead of it.

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Airwallex Plans

*£19/month fee waived if £10,000+ deposited monthly or £10,000 balance held.

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WorldFirst: The Better Option If You Source from China

WorldFirst is a cross-border payments platform founded in London in 2004, now part of Ant Group. It is not a bank and does not try to replace one — you will still need a UK business current account for domestic payments. What it does, it does very well: move money across borders cheaply and fast, especially to and from China.

WorldFirst UK Limited is authorised by the FCA as an Electronic Money Institution (FCA reference: 900508).

Multi-Currency World Account

The World Account holds 20+ currencies simultaneously with no setup fee, no monthly fee, and no minimum balance. You get local bank details in those currencies — a USD routing number, a EUR IBAN, a GBP sort code — so marketplaces and overseas clients pay you as if you were local. Receiving payments from 130+ global marketplaces, including Amazon, eBay, Etsy, and TikTok Shop, is completely free.

FX conversion starts from 0.3% for new customers, with a standard rate of up to 0.50% — well below the 2–3% margins most high street banks apply.

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China Payments — WorldFirst’s Structural Advantage

This is where WorldFirst separates itself from every other platform in this comparison, and from most platforms on the market. Because WorldFirst sits inside the Ant Group ecosystem alongside MYbank, it can route payments through local Chinese banking rails rather than SWIFT.

• Around 90% of payments to China clear on the same business day
• Transfers to other WorldFirst accounts — including 150,000+ Chinese suppliers already on the platform — are instant and free
• Direct integration with 1688.com: browse suppliers and pay them directly from your World Account balance
• Pay in CNY (onshore), CNH (offshore), or USD

If you source products from China, no other UK-based platform currently replicates this combination of speed, cost, and ecosystem access. Waiting up to five business days for a SWIFT payment to clear in China can delay production and shipping. WorldFirst eliminates that delay for the vast majority of transfers.

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WorldTrade — Escrow Protection for New Suppliers

If you are buying from a supplier you have not worked with before, WorldFirst offers WorldTrade: a B2B payment solution that holds your funds in escrow until your goods are confirmed shipped. You can track order and shipping status from the platform and communicate with suppliers directly — without middleman commissions.

• Payment via WorldFirst balance: free
• Payment by card: 2.9% fee
• A per-transaction service fee applies and is negotiable with the supplier

Airwallex has no equivalent product. For ecommerce businesses expanding their supplier base, particularly for high-value first orders, this is a meaningful safety net.

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World Card — Corporate Card with Real Cashback

The World Card is a virtual Mastercard linked directly to your World Account. When you pay in one of 15 supported major currencies from your existing balance, there are zero FX fees. Cashback is structured and ongoing:

There is no minimum spend and no cap on earnings. Cashback is credited automatically at the end of the following month. For businesses spending heavily on digital ads, software subscriptions, or supplier invoices, this adds up to a real reduction in operating costs.

Physical cards are available. Google Wallet is supported.

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Forward Contracts

WorldFirst offers forward contracts, allowing you to fix an exchange rate today for payments made up to 24 months in the future. If you have predictable supplier payment schedules and want to protect your margins against currency movements, this is a tool Airwallex does not offer. Rate alerts are also available — WorldFirst notifies you the moment your target rate is reached.

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WorldFirst Fees at a Glance

For businesses turning over £100,000 or more per month, tailored FX rates are available on request.

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Fee Comparison

*Airwallex Explore plan fee waived if £10,000+ deposited monthly or £10,000 balance maintained. WorldFirst has no monthly fee and no minimum balance.

WorldFirst does not offer self-serve payment acceptance at checkout for SMEs. It works alongside your existing checkout processor (Stripe, Wix Payments, etc.) to handle fund management and supplier payments.

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Airwallex or WorldFirst — Which One Fits Your Business?

These two platforms solve overlapping problems in different ways. Many ecommerce businesses will find they benefit from both — used together, they cover almost every international payments cost your business faces.

Choose Airwallex if:

• You need to accept card payments at checkout through a self-serve integration (Magento, BigCommerce, custom-built platforms)
• You want expense management, receipt capture, and bill pay in one platform
• Your team needs corporate cards with granular spending limits and approval workflows
• You need broader accounting integrations across Xero, QuickBooks, Sage, and NetSuite
• You want to consolidate international finance — receiving, spending, and supplier payments — in one place

Choose WorldFirst if:

• You source products from China and need fast, low-cost supplier payments — WorldFirst’s MYbank integration delivers ~90% same-day transfers that SWIFT cannot match
• You sell on global marketplaces (Amazon, eBay, Etsy, TikTok Shop, and 130+ others) and want to collect for free
• You want to lock in exchange rates months ahead using forward contracts
• You need escrow protection when working with new or unknown suppliers via WorldTrade
• You want ongoing cashback on business card spend — up to 1.2% with zero FX fees on 15 currencies

Use both if:

You keep Stripe or your existing checkout processor for payment acceptance, use Airwallex for multi-currency fund management and expense control, and use WorldFirst specifically for China supplier payments. This combination covers the full cost problem the article describes — checkout fees, fund management FX, and supplier payment FX — across all three stages.

Neither WorldFirst nor Airwallex is a bank. Customer funds at both platforms are safeguarded in segregated accounts in line with FCA Electronic Money Regulations, but are not covered by the Financial Services Compensation Scheme (FSCS).

MoneyZoe earns a commission if you open an account via our links. This article is for information only and is not financial advice. Always verify current fees at airwallex.com and worldfirst.com before making any decisions.

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Airwallex vs WorldFirst FAQs: People Also Ask

Are Airwallex and WorldFirst regulated in the UK?

Yes, both are FCA-authorised Electronic Money Institutions. Airwallex (UK) Ltd holds FRN 900876; WorldFirst UK Limited holds FCA reference 900508. Under FCA rules, both must hold customer funds in segregated accounts, ring-fenced from their own operating money. Neither is a bank, so funds at either platform are safeguarded but not covered by the Financial Services Compensation Scheme (FSCS).

Does Airwallex or WorldFirst integrate with my ecommerce platform?

It depends on your platform and what you need the integration for. Airwallex has a payment plugin for Magento that integrates at checkout, and provides a full API and hosted checkout page for custom-built sites. It does not currently have a native Wix Payments integration for checkout. WorldFirst does not offer self-serve checkout integration for any platform — its Global Checkout product is enterprise/API-only. For Wix stores, or if you just need fund management and supplier payments rather than checkout, both platforms work independently of your checkout processor.

Can I use Airwallex or WorldFirst alongside my existing payment gateway?

Yes, for both. Opening an account with either platform does not affect your existing payment processing arrangements, and you don’t need to inform your current provider. Many ecommerce businesses keep Stripe, PayPal, or Wix Payments for checkout, and use Airwallex or WorldFirst purely for receiving international revenue, holding multi-currency balances, and paying overseas suppliers — eliminating most FX costs at the fund management and supplier payment stages without touching the checkout setup.

How long does it take to open an account?

Airwallex account opening typically takes 15–20 minutes online, with verification adding a short additional period depending on your business structure. WorldFirst registration takes a few minutes online, with verification and approval usually completing within a few hours, though it can take a couple of business days in some cases. Neither requires paperwork submitted in person.

Does either platform charge a monthly fee?

WorldFirst has no monthly fee and no minimum balance requirement at any tier. Airwallex’s Explore plan costs £19/month, waived if you maintain £10,000 in monthly deposits or account balance; Grow and Accelerate plans have fixed monthly fees regardless of balance. If a no-fee account is the priority, WorldFirst is the simpler option — though Airwallex’s paid plans include features (expense management, bill pay, self-serve payment acceptance) that WorldFirst doesn’t offer.

How do Airwallex and WorldFirst compare on payments to China?

This is where the two platforms differ most. WorldFirst is part of Ant Group and connects directly to MYbank, routing China payments through local banking rails — around 90% clear on the same business day, and transfers to WorldFirst’s 150,000+ Chinese suppliers already on the platform are instant and free. Airwallex routes China payments via SWIFT or local rails without the same direct infrastructure, so timing follows standard international transfer speeds. If China supplier payments are a regular, significant part of your business, WorldFirst has a structural advantage here that Airwallex doesn’t match.