How to Compare Payment Gateway Providers: A Merchant Checklist
An evidence-first checklist for eliminating unsuitable gateways, comparing complete costs and testing the payment lifecycle before committing.
Inside this guide
A shortlist should survive your operating reality
A gateway comparison is useful only when it tests the business you actually operate. A polished checkout, a familiar logo and a low advertised percentage answer different questions from whether a provider can onboard your company and settle the approved activity to your bank. Start by writing a one-page operating specification: contracting entity, websites, products, customer countries, monthly volume, ticket range, delivery times, recurring requirements and bank-account location. Give every candidate the same specification.
Payment Guide’s proposed method is to eliminate unsuitable arrangements first, compare complete economics second, and test operating behaviour third. This is an evaluation framework, not a provider rating or an approval prediction. A missing answer stays missing; it should never acquire a favourable score merely because the salesperson was persuasive.
Use three eligibility gates before comparing features
Gate one is identity and geography: will the proposed contracting entity onboard your exact legal company, ownership structure and settlement account? Gate two is activity: are your actual products, distribution model and customer markets within the written scope? Gate three is transaction flow: can the arrangement support subscriptions, delayed capture, refunds or third-party sellers where required? Ask for a precise response to each gate, with exclusions and outstanding conditions.
An unanswered critical gate puts the candidate on hold. A confirmed conflict excludes it from this procurement round. This prevents a technically attractive gateway from winning a comparison that it cannot fulfil. For specialist businesses, separate the commercial introduction from the acquiring or underwriting decision and identify who is authorized to confirm each.
| Gate | Evidence to request | Decision |
|---|---|---|
| Company and geography | Named contracting entity; your company and bank jurisdictions | Hold if authority or onboarding scope is unknown |
| Business activity | Products, websites, customer markets and restrictions | Exclude a confirmed activity conflict |
| Transaction flow | Required recurring, capture, refund and seller flows | Proceed only when essential flows are supported |
Compare method behaviour, not a row of logos
Choose the payment methods that matter to your customer mix, then inspect the supported implementation. Adyen’s documentation separates methods, processing currencies, settlement currencies, features and integrations rather than treating them as interchangeable attributes. [5] Build your own equivalent matrix. Does the method support the refund pattern, recurring arrangement and capture sequence you need? Is it available through the plugin you plan to use, or only through a different integration?
A wallet logo alone cannot answer those questions. Ask the technical team to demonstrate the required flow in a test environment and identify account-level activation requirements. Keep optional enhancements outside the minimum launch specification so a long feature list does not distract from a missing essential capability.
Calculate one comparable month of processing
Use the same volume, transaction count, customer-country mix and currency assumptions for every proposal. Adyen’s pricing page illustrates why a processing component and a payment-method component can need separate treatment; other products can have separate prices. [1] The original calculation below uses invented quotes, not rates from any named provider. Both offers cost $3,000 for transaction processing on $100,000 across 2,000 transactions, even though their headline percentages differ. After the stated extras, the totals are $3,860 and $3,360.
The $500 difference is worth investigating, but neither quote wins until eligibility and settlement are acceptable. Add refunds, disputes, failed-payment fees and implementation costs where relevant; do not assume an omitted line is free. Record whether the calculation includes taxes and minimum commitments.
| Monthly component | Illustrative offer A | Illustrative offer B |
|---|---|---|
| Volume / transactions | $100,000 / 2,000 | $100,000 / 2,000 |
| Processing price | 2.6% + $0.20 | 2.9% + $0.05 |
| Processing amount | $3,000 | $3,000 |
| FX charges assumed | $700 | $180 |
| Payout charges assumed | $60 | $30 |
| Platform fee assumed | $100 | $150 |
| Total stated fees | $3,860 | $3,360 |
Keep fees and temporarily unavailable cash separate
A reserve affects liquidity even when it is potentially recoverable, so it belongs beside the cost comparison rather than being disguised as a processing fee. Under a hypothetical arrangement withholding 5% of $100,000 of eligible monthly sales, $5,000 is initially unavailable. That is separate from the fee totals above; release depends on the actual contract.
Request a dated cash-flow example showing capture, availability, payout initiation and bank arrival. Stripe explicitly distinguishes payout frequency from the time pending funds take to become available. [2] Also distinguish the currency charged to a customer from the currency arriving in the bank; Stripe’s currency documentation treats these separately. [3] Ask which party converts, on what basis, and whether a second conversion occurs at your bank.
Run a lifecycle test with a finance colleague
A successful test purchase is the beginning of acceptance testing. Follow it through capture, partial refund, cancellation, webhook delivery and reconciliation. Test a network timeout and verify that retry behaviour does not create duplicate orders. Check how your system distinguishes an unpaid order, an authorized amount and a captured transaction.
Give finance a sample payout report and require them to trace the net amount back to individual sales and deductions. These are proposed procurement checks, not claims that every gateway implements the same controls. For migration, establish whether stored credentials can be transferred, who must authorize the transfer, and what subscriptions would require customer action. An inexpensive integration can become expensive if essential reconciliation or migration work was excluded from the project estimate.
Assign responsibilities and price the exit
Ask who handles integration incidents, payout queries, disputes and changes to the approved business scope. Request support hours, escalation routes and any contractual service levels instead of inferring them from a chat response. Obtain termination notice, outstanding-fee treatment, data export and credential portability terms before signing.
Outsourcing checkout also leaves merchant responsibilities to resolve: PCI SSC says merchants must understand shared duties and confirm their validation obligations with the relevant compliance-accepting entity. [4] Ask your provider or acquirer for the requirements applicable to the actual implementation. A hosted payment page may reduce the work in your environment, but it is not permission to ignore your website, access controls or the security responsibilities set out in the agreement.
Record a decision another colleague could reproduce
After the gates, evaluate eligible candidates against four practical questions: complete cost, usable cash, required payment behaviour and operational effort. Rate the evidence as documented, demonstrated, proposed or unknown. Keep an owner and a deadline against every open item. Weight the criteria according to your business: an invoiced B2B operation may prioritize reconciliation, while a subscription company may prioritize renewal continuity and migration.
Do not average away a critical failure with several attractive extras. Where the result depends on an assumption, rerun the calculation with a plausible alternative. For example, increase the cross-border share or refund count and see whether the preferred offer changes. A comparison that changes winner under small assumption changes needs more evidence before commitment.
What it means to merchants
Prepare one operating specification, reject arrangements with unresolved critical eligibility conflicts, and ask the remaining candidates to price and demonstrate the same scenario. The decision record should name the approved activity, the proposed contracting parties, complete fee assumptions, settlement mechanics and the person responsible for resolving exceptions. Use Payment Guide profiles to organize research, then verify the proposal directly: a claimed representative badge does not establish licensing or merchant acceptance.
If only one option passes the gates, investigate whether its limitations are tolerable rather than manufacturing a competitive score. The useful outcome is a defensible selection and a clear next step, including a decision to postpone migration when the evidence or operating liquidity is insufficient.
Frequently asked questions
Should I choose the lowest processing percentage?
Compare the complete processing scenario after essential eligibility gates. Fixed charges, FX, payouts, operational work and liquidity conditions can change the decision.
Does appearing in the directory confirm my eligibility?
No. A listing is a research starting point. Obtain confirmation of your legal entity, business model, customer markets and required flows from the relevant provider.
Sources
Sources checked on 29 October 2026.
Payment Guide helps you research the structure, understand the questions and prepare your next conversation.