eCommerce payment gateways 2026: Features and fees compared

Key takeaways

• Selecting a suitable eCommerce payment gateway helps lower payment processing costs and improve checkout conversion rates.

• When selecting payment gateways, transparent fee structures, like-for-like settlement, and local wallet support are essential for scaling cross-border online sales.

• Airwallex payment gateway supports 160+ local payment methods and like-for-like settlement in 20+ currencies, helping merchants avoid unnecessary FX fees.

Selecting an effective eCommerce payment gateway is critical for expanding local and international online sales. This comprehensive guide details fee structures, platform integrations, local checkout methods, and cross-border settlement strategies for online merchants. You will also find out how Airwallex offers a high-converting payment gateway that equips Hong Kong businesses to safeguard profit margins through a unified financial platform.

Comparison of leading eCommerce payment gateways in 2026

Selecting an online payment provider shapes customer experience and operational overhead. While each payment service provider maintains distinct fee structures and settlement rules, choosing a processor requires balancing technical development effort against total transaction costs. 

Payment gateway comparison: Stripe, PayPal, Shopify Payments, Adyen, and Airwallex

The table below compares five providers commonly considered by Hong Kong eCommerce merchants. Stripe offers extensive API capabilities for custom integrations, PayPal provides familiar international wallet checkout, Shopify Payments integrates directly with Shopify, Adyen supports complex high-volume payment operations, and Airwallex combines global payment acceptance with multi-currency financial management.

Airwallex’s key edge is linking checkout with global money management. Hong Kong businesses can manage money collections, reconciliation, supplier payments, and spend controls through one operating layer, reducing handoffs between a payment processor, bank, and FX provider.

At checkout, local acquiring and adaptive authorisation help improve approval performance while applying modern 3DS and fraud controls according to transaction risk. This gives merchants fewer operational gaps, less payment friction, and clearer visibility from customer transaction to available cash.

Breaking down eCommerce payment gateway fees

A payment gateway’s advertised transaction rate rarely reflects the full cost of accepting online payments. Merchants should assess the combined impact of percentage fees, fixed charges, cross-border surcharges, FX markups, payout costs, and chargeback fees before choosing a provider.

Card processing and fixed fees

Most gateways charge a percentage of each transaction alongside a fixed fee. For Hong Kong merchants, standard domestic credit card acquiring rates typically range from 1.5% to 3.3% plus HK$2.35 per sale. These charges create the baseline cost of processing local card payments.

Cross-border fees and FX markups

International transactions may incur an additional card surcharge. The larger cost can come from foreign exchange conversion, particularly when a gateway automatically converts overseas revenue into Hong Kong Dollars. FX spreads can range from 2% to 3.5% above market interbank rates, reducing the margin on each international sale.

Forced double conversion can increase the cost further. For example, a merchant may pay an FX markup when converting overseas revenue into Hong Kong Dollars, then pay a second FX fee when converting funds back into a supplier’s currency.

Chargeback and dispute costs

A chargeback occurs when a customer disputes a transaction through their issuing bank. Processors may charge HK$150 to HK$250 for each dispute, creating a direct financial cost before considering the value of the disputed order, fulfilment expenses, and internal administration time.

How Airwallex can help reduce costs

Airwallex can help merchants manage the main costs of cross-border payment processing in one place. Its local acquiring and broad payment method coverage can reduce reliance on more expensive payment routes, while like-for-like settlement in 20+ currencies helps merchants avoid unnecessary FX conversions. Connecting payment collections with an Airwallex Business Account also makes it easier to manage foreign currency balances and pay overseas suppliers in the same currency, reducing the risk of double conversion and improving cash flow visibility.

How to choose payment methods that help more customers complete checkout

Offering the right payment methods can make checkout easier for customers and help reduce abandoned carts. Hong Kong merchants should combine familiar local options for domestic shoppers with widely used cards and digital wallets for international customers, while displaying prices in the currencies buyers expect.

Local Hong Kong payment preferences: FPS, PayMe, and AlipayHK

Offering preferred local payment methods directly increases checkout completion rates across Hong Kong. Faster Payment System (FPS) provides instant bank transfers with minimal processing overhead. PayMe and AlipayHK serve as primary mobile wallet choices for consumer retail shopping. Integrating these local payment rails reduces reliance on credit cards for domestic shoppers.

Global digital wallets and credit card schemes for cross-border shoppers

International shoppers expect familiar payment options when navigating global checkout flows. Visa and Mastercard dominate general cross-border credit card volume. American Express caters to high-spending corporate and international consumers. Digital wallets such as Apple Pay and Google Pay streamline mobile checkout by eliminating manual card entry. 

Reducing cart abandonment with localised currency display and checkout flows

Presenting product prices in unfamiliar currencies can trigger checkout drop-off. Shoppers prefer seeing final prices in their native currency without calculating exchange estimates. Modern payment solutions like Airwallex Checkout display localised currencies based on buyer geolocation. Dynamic currency display presents exact payment totals, reducing cart abandonment across international sales channels.

How to connect cards and local payment methods to Shopify or WooCommerce

Hong Kong merchants can use Airwallex payment plugins for Shopify or WooCommerce to connect their store checkout to Airwallex’s payment gateway. This allows merchants to offer eligible payment methods such as Visa, Mastercard, Apple Pay, PayMe, Faster Payment System (FPS), and AlipayHK without building a full payment integration from scratch. Below will introduce the step-by-step guide for plugin connections.

How to connect Airwallex Checkout with Shopify

Shopify merchants can install the Airwallex plugin and select the payment methods they want to offer at checkout: 

1. Search for and install the Airwallex Payment Plugin from the Shopify App Store. 

2. Sign in and verify your Airwallex Business Account. 

3. In the relevant payment settings, enable eligible card, wallet and local payment methods, including Apple Pay, PayMe, FPS and AlipayHK where available. 

4. Check that the selected payment methods, currencies and pricing appear correctly on your checkout page. 

5. Save the settings and run test payments using different payment methods before accepting live orders.

How to connect Airwallex Checkout with WooCommerce

WooCommerce merchants can connect Airwallex by installing the plugin and configuring payment and order settings in the WordPress dashboard: 

1. Download and install the Airwallex Payment Plugin from the WordPress plugin directory.

2. Activate the plugin and open WooCommerce Settings, then select Payments.

3. Enter the API Client ID and API Secret Key from your Airwallex merchant account. 

4. Enable eligible card, wallet and local payment methods, including Apple Pay, PayMe, FPS and AlipayHK where available.

5. Enable webhooks so payment results, refunds and order statuses sync with your shop in real time.

Testing payment methods before launch

Before going live, test cards, Apple Pay and each eligible local payment method across the currencies and markets you plan to serve. Check that authorisation responses, 3DS verification and payment failure messages work as expected, then verify that webhooks update order statuses correctly. You should also test cancellations and refunds to ensure payment records, order information and balances remain accurate.

How payment gateway payouts affect your cash flow

Accepting a payment is only the first step: The funds must then be approved, released, and paid into your business account. This section explains how payment gateway payout timing, risk reviews, reserve requirements, and multi-currency management can affect your working capital.

How quickly do payment gateways pay out?

Payout timing determines when revenue from completed transactions reaches your operating account. Standard payment gateway schedules often range from T+2 to T+7 business days, so merchants should factor the delay into inventory purchases, advertising budgets, and supplier payments.

Why might a payment gateway delay or reserve funds?

Payment processors may apply risk controls to protect against refunds, fraud, and chargebacks, particularly when an account is new or transaction activity changes suddenly. Before you start operating, familiarise yourself with the following concepts:

• Rolling reserves: A provider may set aside 5%–10% of daily turnover for 90 to 180 days to cover potential chargebacks.

• Payout limits: New merchant accounts may have initial processing caps until the provider reviews their transaction history.

• Payout restrictions: A provider may temporarily restrict access to funds after an unusual increase in order volume and cross-border activity.

To help prevent or resolve payout reviews, keep your fulfilment records complete and easy to access. Store order confirmations, invoices, customer communications, proof of delivery, refund records, and tracking updates in one place. Clear refund and cancellation policies can also reduce disputes and help providers review your account more quickly.

How can merchants manage gateway payouts across currencies?

Traditional payment acquiring may route incoming revenue into a single local currency bank account. This can create conversion costs when receiving international payments and paying overseas suppliers. Modern platforms such as Airwallex connect payment collections with multi-currency Global Accounts, helping merchants manage funds in the currencies they use.

Shop owners can accept foreign sales, manage balances in native currencies, and make transfers to overseas vendors. Managing collections and supplier payments through one platform can reduce unnecessary conversions and make cross-border cash flow easier to track.

How payment gateways protect payments and handle disputes

An online shop needs to protect customer payment details while keeping genuine purchases moving smoothly. This section explains the main security standards, fraud controls, and chargeback practices that help merchants reduce risk without adding unnecessary friction at checkout.

Meeting PCI DSS compliance requirements for online shops

The Payment Card Industry Data Security Standard (PCI DSS) provides requirements for protecting payment card data. Accepting direct credit card numbers on hosted servers requires rigorous security controls. Airwallex handles sensitive cardholder data through secure tokenised iFrames. Online shop owners can maintain PCI DSS compliance without building costly technical infrastructure audits into their operations.

AI-driven fraud detection engines and adaptive risk management rules

Automated fraud protection balances security against customer conversion rates. Legacy fraud systems rely on rigid static rules that can trigger false positives. Modern platforms like Airwallex employ AI-driven fraud engines that continuously analyse device signals, IP addresses, and purchasing behaviour.

Efficient handling of customer chargeback disputes and evidence submission

Resolving chargeback claims demands structured evidence and rapid submission workflows. Below is the general procedure of handling chargeback claims: 

1. Receive automated dispute notifications through a webhook and dashboard alert.

2. Gather order verification, including proof of delivery, IP logs, and customer communication records.

3. Submit evidence packages through your merchant portal before processor deadlines.

4. Track dispute resolutions directly inside your payment management console.

Keeping these records organised gives you a complete evidence trail, helping you respond within the processor’s deadline and strengthen your case when a legitimate transaction is disputed.

Why Hong Kong merchants choose Airwallex for cross-border payments

Airwallex payment gateway helps Hong Kong eCommerce businesses accept international payments through a checkout experience built around local customer preferences. With like-for-like settlement in 20+ currencies, merchants can receive eligible payments in the currency their customers use, helping reduce unnecessary FX conversion and protect profit margins.

By connecting the payment gateway to an Airwallex Business Account, eCommerce merchants can manage those balances and pay overseas suppliers in the same currency. This keeps checkout and cross-border collections connected without adding unnecessary complexity.

Frequently asked questions

Which payment gateway is best for small eCommerce shops in Hong Kong?

The best choice depends on your target markets and customers’ preferred payment methods. Shops serving mainly local customers should look for support for FPS, PayMe, and AlipayHK, while merchants selling internationally may prioritise multi-currency like-for-like settlement and broad card coverage. Airwallex combines local Hong Kong payment methods with global acquiring capabilities.

How long does it take for payment gateway funds to settle into a business account?

Settlement times vary by provider and account risk profile, but standard payout schedules generally range from two to seven business days after a transaction is completed.

How can I accept US Dollars and Euros without paying foreign exchange conversion fees?

Choose a gateway that supports like-for-like multi-currency settlement, since traditional processors may automatically convert foreign payments into local currency. Airwallex allows merchants to collect in 130+ currencies and settle into 20+ matching currency accounts, helping them manage foreign balances and pay international suppliers with fewer unnecessary FX conversions.

Sources:

Information was sourced as of August 2026 for reference purposes. For the latest details, please visit each provider’s official website.

• https://stripe.com/en-hk/pricing

• https://www.shopify.com/hk-en/payments

• https://www.pcisecuritystandards.org/

Disclaimer: This article was prepared in August 2026 based on voluntary online research and publicly available information. We have not personally tested every tool or provider mentioned. This article is for educational purposes only, and readers should independently evaluate each service provider based on their specific business requirements. Content is updated every six months. To request an update, please contact us at [email protected].