How to Choose a Payment Processor
Start with acceptance, not price. Confirm that the processor will take on your industry, markets and volume; then compare approval rates, the pricing model, settlement and reserve terms, integration and PCI scope, and how easily you can leave. The cheapest headline rate is rarely the cheapest processor once declines and cash flow are counted.
1. Acceptance first
Get written confirmation that your industry, your merchant category code, your country of registration, your target markets and your monthly volume are within the processor's policy. If the answer is no, nothing else matters, and an account opened on the wrong assumptions is the one most likely to be frozen later.
2. Approval rates and payment methods
- Ask for authorisation rates in your top countries and card types, not a global average.
- Check that the local payment methods your customers expect are supported in each market.
- Ask how 3-D Secure and its exemptions are handled for European cards.
- If you bill recurring, ask about retries, account updater and network tokens.
3. Pricing models: blended or interchange-plus
Blended pricing charges one rate for every card. Interchange-plus passes through the card issuer's interchange and the scheme fees at cost and adds the processor's own margin on top, which makes the cost of each card type visible. In the EU, interchange on consumer cards is capped at 0.2% for debit and 0.3% for credit, while for card-not-present payments between the UK and the EEA the schemes raised it to 1.15% and 1.5%, a level the UK's Payment Systems Regulator is still working to cap.
Compare offers on your own card mix and average transaction value, and include the fixed fee per transaction, chargeback fees, monthly minimums and FX margins.
Try it with your own numbers
Payment processing cost calculatorPut your own volume, transaction count and fees in to see the effective rate.
4. Settlement and reserves
- How often you are paid, and in which currency.
- Whether a rolling reserve, an upfront reserve or delayed settlement applies, and on what terms.
- What triggers a change in reserve or settlement timing.
- What happens to held funds if the account is closed.
Try it with your own numbers
Rolling reserve calculatorSee what that percentage and hold period would tie up on your own volume.
5. Integration and PCI scope
A hosted payment page or redirect keeps card data away from your systems and keeps your PCI DSS scope smallest. An embedded component is a middle ground, and a direct API gives you full control but the largest scope. PCI DSS version 4 has applied since March 2024, and its last new requirements became mandatory on 31 March 2025, including stricter rules for scripts on payment pages, so ask which compliance questionnaire your integration lets you use.
6. Contract and exit
- Notice period and any early termination fees.
- Whether stored card tokens can be migrated to another processor.
- Whether the contract allows a second processor alongside it.
- How quickly the processor can freeze funds, and what it must tell you when it does.
7. Support and reporting
- A named contact rather than ticket-only support, and response times in writing.
- Reports that reconcile settlements, fees, refunds, chargebacks and reserve movements.
- A sandbox and documentation that let you test before going live.
Compare the real cost
A slightly lower rate with a weaker approval rate, slower settlement and a large reserve usually costs more in practice. Compare cost per successful payment together with the effect on your cash flow, and keep a second processor ready so one account review cannot stop your revenue.
How Ecompayer helps
Ecompayer is not a payment processor. Instead of applying to processors one by one, you complete one online application and get matched.
- Add your business, markets, volumes and payment needs once.
- We match you with a processor that accepts your profile.
- Your account is prepared with the processor so you can go live.
Check your own situation
The factors above apply differently to every business. Answer four questions to start comparing your own profile against provider criteria.
Four questions about your business
Industry, company country, customer markets and estimated monthly volume, that is all we need to begin.
Related guides
What is a PSP?
A payment service provider (PSP) is the company that lets your business accept payments: it connects your checkout to card schemes and local payment methods, sends each payment for authorisation and reports the result. Some PSPs also hold the acquiring licence and settle the money to you; others route your payments to a separate acquiring bank that does.
PSP vs acquirer
The PSP provides the technology and the commercial relationship; the acquirer holds the scheme licence, underwrites your business and settles your money. Many merchants need both, sometimes bundled by one provider, sometimes contracted separately.
Chargeback ratio
Your chargeback ratio is the number of disputes in a month divided by a month of transactions, shown as a percentage. Mastercard flags merchants from 1.5% of chargebacks and Visa from 1.5% of fraud plus disputes in most regions, both with minimum counts, and most acquirers act before that. It is the number that decides whether you keep your account, so know exactly how your provider calculates it.
Rolling reserve
A rolling reserve is a percentage of each payout that your acquirer holds back for a fixed period, typically three to six months, before releasing it. It covers refunds and chargebacks that can arrive long after you have been paid. The money is still yours, but while it is held it is not working capital, so the terms matter as much as your processing rate.
High-risk payment processing fees
There is no single price for high-risk payment processing. What you pay is made up of processing fees, chargeback and scheme fees, currency and payout costs, and the cash held back in a reserve. High-risk businesses pay more than ordinary online shops because the acquirer carries more risk, but two offers for the same business can still differ a lot. The way to compare them is the effective rate on your own volume, plus the cash a reserve ties up.
Find a payment provider that fits your business
Add your business essentials once and see which PSPs and acquirers match your profile before applying.
Check my payment optionsNothing is shared with a provider until you submit your onboarding pack. Approval is always the provider's decision.