How to choose a payment provider in 8 steps

Key Takeaways

• Chargeback fees ($15 per dispute), a 1.5% international card surcharge, and 1-2% currency conversion markups stack up fast. Total transaction costs can quietly climb above 5%, so how a provider discloses fees matters just as much as the headline rate.

• To choose the right payment provider, audit your transaction volume and target markets, compare pricing models (flat-rate vs. interchange-plus), confirm PCI DSS Level 1 compliance, evaluate API flexibility, and prioritize providers with local clearing networks for faster settlement.

• If cross-border volume is a real part of your business, the Airwallex Business Account settles 93% of transactions same-day through its own local clearing network, accepts collections in 130+ currencies, and gives you the choice between blended and interchange-plus pricing.

The wrong payment provider costs you in ways that are easy to miss until the damage is done. Hidden fees chip away at margin, slow settlement ties up cash, and failed international transactions push buyers elsewhere. Your provider affects when money lands in your account, how much disappears in FX, and whether your checkout actually converts. Here's how to work through your options in eight steps.

Understanding payment providers

What is a payment provider?

A payment provider is a fintech company that handles accepting, processing, and settling digital payments for merchants. It sits between your checkout page and the banking system, routing card details through the right channels so your business gets paid without exposing sensitive customer data. Since Visa introduced the first electronic credit card terminal in 1979, the industry has evolved into a software-driven ecosystem where modern businesses rely on these platforms for security, compliance, and international routing.²

How do payment providers work?

When a buyer clicks pay, the checkout portal sends encrypted details through a gateway to the payment processor, which routes the data to the card network and the customer’s bank for approval. Once approved, funds are debited from the customer and eventually settled into your merchant account. This coordination happens in milliseconds. Choosing a provider that owns its tech stack can improve routing speed and reduce failed transactions.

The three types of payment providers at a glance

Before choosing your infrastructure, understand the distinct roles of gateways, processors, and full-service providers, each of which carries different setup speeds, development requirements, and fee structures. Standalone gateways and processors give you deep control over transaction routing but require a separate merchant bank account. Full-service payment service providers simplify this by aggregating everything into a single integration.

How to choose a payment provider in 8 steps

Choosing the right payments' partner requires more than comparing standard rates. Here are the eight steps to evaluate your options and protect your margins.

Step 1: Know your business needs

Before comparing providers, get clear on your own numbers: how much volume you're processing, where your customers are, and where the business is headed over the next year.

Will you accept payments online, in-person, or both?

Whether you sell online, in person, or both determines which providers will actually work for you. Running separate ones for each channel creates fragmented reporting and manual reconciliation headaches. A single provider covering both gives your finance team one clean view of cash flow. If you're digital-first, working out your best online payment processing options early helps you cut through the feature list.

Payment methods your customers expect

Displaying the right payment methods prevents cart abandonment, and what works varies significantly by market. Cards represent 73% of Australian consumer payments, but 43% of shoppers there use mobile contactless devices.³ In markets like China, Alipay processes over 100 million daily transactions.⁴ Missing localized digital wallets can cause buyers to abandon their purchases immediately.

Step 2: Pick the right type of payment provider

Selecting your provider category determines the technical resources you’ll need to allocate to payments. Your options range from a custom multi-vendor stack to a consolidated platform.

Payment gateways

A payment gateway encrypts card details at checkout so CVVs and credit card numbers stay secure in transit. Keeping buyers on your own site through an integrated gateway typically converts better than bouncing them to a third-party page.

Payment processors

Understanding the payment gateway vs payment processor distinction is important before choosing your stack. The backend payment processor handles the actual movement of funds between banks once the gateway authorizes the transaction. Using a standalone payment processor requires opening a dedicated merchant account, which involves a lengthy underwriting process.

Full-service PSPs

Full-service payment service providers fold the gateway, processor, and acquiring into one relationship. For a growing business, that means one API to maintain instead of three vendor contracts, and far less time spent on payment infrastructure.

Do you need more than one provider?

Operating multiple payment providers establishes technical redundancy and optimizes global transaction routing. When a primary gateway goes down, routing logic can redirect transactions to a backup automatically. Running multiple providers also lets you send payments through local acquiring banks in different regions, which tends to improve approval rates and reduce cross-border fees.

Step 3: Compare pricing models

Transaction fees directly impact your gross margins, so you need to carefully evaluate how providers bill your business. Reviewing the best payment processors side by side on fee structure is the most efficient way to identify your true cost. Most platforms use one of two models: flat-rate pricing or interchange-plus.

Flat-rate vs. interchange-plus pricing

Flat-rate pricing charges a fixed percentage and transaction fee. The standard US domestic rate runs 2.9% plus $0.30.⁵ It’s simple to understand but becomes expensive as volume scales. Interchange-plus pricing separates the card issuer fees, network scheme fees, and processor markup, giving you direct visibility into your actual cost structure. This transparency lets you benefit from regional fee caps, like the 0.2% cap on consumer debit cards in the UK.

Hidden fees to watch for

Headline rates rarely tell the full story. Most platforms charge a $15 dispute fee per chargeback, win or lose. Tools like recurring billing or digital invoicing typically come with extra percentage surcharges layered on top of your base rate. The number that actually matters is your effective rate: total payment costs divided by total volume. That's where you see what you're really paying.

Step 4: Check international payment support

Selling globally puts real pressure on your payment setup. Most traditional platforms tack on surcharges for cross-border transactions that quietly erode margin on every sale.

How currency conversion affects your costs

Forced currency conversion can quietly destroy your margins on global sales. Standard processors often add a 1.5% international card surcharge on top of a 1-2% currency conversion markup. If your business regularly handles foreign currencies, like converting euros to dollars with an EUR to USD converter or pounds with a GBP to USD converter, these stacked fees can push transaction costs past 5%. To protect your margins, look for a provider that supports like-for-like settlement so you can collect and hold currencies natively.

Step 5: Review security and compliance

Weak payment security puts customers at risk and opens the door to regulatory fines that can dwarf the cost of getting the infrastructure right.

Security standards and compliance requirements

PCI DSS Level 1 compliance is the baseline. If your provider uses advanced tokenization, card numbers never pass through your own servers, which shrinks your compliance surface. You'll also want 3D Secure 2.0 support if you sell in Europe, where Strong Customer Authentication is a requirement.

Step 6: Check integrations and compatibility

A provider that doesn't fit your tech stack creates friction downstream. Before you commit, check both the API quality and what pre-built integrations ship out of the box.

Developer tools and APIs

API quality and developer tools vary significantly across providers. Robust REST APIs and clear documentation let your engineering team customize the checkout flow and automate backend workflows, reducing the technical debt required to maintain your payment setup over time.

Pre-built plugins for popular platforms

If your team doesn’t have deep developer resources, pre-built plugins are valuable. If your team doesn't have dedicated developer resources, pre-built integrations carry a lot of weight. Most major providers cover Shopify, WooCommerce, and Magento, so you can get a working checkout live without writing any custom code.

Step 7: Look at how fast you get paid

Implementing the best payment processing system starts with settlement speed. Standard gateways hold funds for two to three business days. International wires can stretch that to five. The right payment processing system uses local clearing networks instead of SWIFT routing, which can get funds to you the same day. This connection can deliver funds within hours or on the same day, keeping your cash productive.

Step 8: Review the checkout experience

Optimizing your eCommerce payment processing setup is critical, friction at checkout is the primary cause of abandoned purchases. Research shows 18% of US online shoppers abandon their carts because the checkout process felt too long or complicated.¹ Minimize checkout forms to under 14 elements and offer local digital wallets dynamically to capture motivated buyers before they leave.

Why businesses choose the Airwallex Business Account

The Airwallex Business Account is built for businesses that move money across borders. By combining over 60 global banking licenses with a proprietary local clearing network, Airwallex Payments allows 94% of transfers to bypass SWIFT completely, with 93% of transactions arriving within hours or on the same day.

Through Airwallex Multi-Currency Accounts, your business can collect funds in over 130 currencies and settle like-for-like in 20-plus currencies, with local bank details in 70+ countries. You can collect euros from European buyers, hold the balance locally, and pay European suppliers in the same currency. No forced conversion, no markup eating into the transaction.

The Airwallex Business Account supports both blended and interchange-plus pricing, so you can choose the model that fits your current stage and keep more margin as volume grows.

Explore different types of payment providers

Choosing the right financial partner is critical for business growth. Explore our dedicated resources to find the ideal tools for your operations:

• Best payment processors: Optimize your back-end transaction networks.

• Best payment gateway: Secure your online checkouts and protect customer data.

• Best payment processing systems: Integrate your point-of-sale hardware and software data.

• Best cross border payment solutions: Streamline multi-currency transactions and international sales.

• Best online payment processing services: Find digital-first solutions built for e-commerce.

Frequently asked questions about how to choose a payment provider

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

A payment gateway encrypts card data and passes it from your checkout to the payment processor, which routes it to the card network and bank for approval. Full-service providers fold both into one integration, so you're not juggling two separate vendor relationships.

What hidden fees should I watch for when evaluating payment providers?

The headline rate is just the start. Chargeback fees ($15 per dispute, non-refundable), international card surcharges (typically 1.5%), currency conversion markups (1-2%), and add-on fees for tools like recurring billing all compound. Your effective rate, total payment costs divided by total volume, gives you a more honest read on what you're actually paying.

What security certifications should a payment provider have?

PCI DSS Level 1 is the baseline requirement. Beyond that, look for 3D Secure 2.0 if you sell in Europe where Strong Customer Authentication applies, and advanced tokenization so card numbers never pass through your servers. Those three together keep you compliant and limit your exposure if something goes wrong.

How does the Airwallex Business Account handle international payments?

The Airwallex Business Account runs its own local clearing network across 60+ countries, so 94% of transfers skip SWIFT entirely. Of those, 93% settle same-day or within hours. You can collect in 130+ currencies and settle like-for-like in 20-plus, holding and paying in the same currency without triggering a conversion.

Sources

1. https://baymard.com/lists/cart-abandonment-rate

2. https://www.adyen.com/en_GB/knowledge-hub/what-is-a-payment-service-provider

3. https://marketixdigital.com.au/blog/ecommerce-checkout-cart-abandonment-statistics/

4. https://www.adyen.com/en_SG/payment-methods/alipay

5. https://checkthat.ai/brands/stripe/pricing