International merchant-services information · UK · Europe/EEA · USA · CanadaInformation checked against the site's provider dataset: 15 Sep 2026
Merchant Atlas

Frequently Asked Questions

34 practical questions covering merchant-services fundamentals, pricing, fraud, compliance and international payments.

What are merchant services?

Merchant services are the systems, providers and financial relationships that enable a business to accept and settle customer payments.

What is a merchant account?

A merchant account is a merchant-side arrangement used to receive card transaction proceeds. Some modern PSPs abstract the traditional account structure.

What is a payment gateway?

A payment gateway securely transmits payment information between a checkout and payment infrastructure.

What is a payment processor?

A processor handles transaction messaging and processing services between participants in the payment ecosystem.

What is an acquirer?

An acquirer provides the merchant-side acquiring relationship and associated settlement services for card payments.

What is a card network?

A card network provides rules and infrastructure for card transactions between issuers and acquirers.

What is interchange?

Interchange is a fee generally transferred between an acquirer and card issuer as part of card-payment economics.

What are assessment or network fees?

Network or assessment fees are charges associated with card-network services and rules; exact treatment varies by network and provider.

Why do payment providers charge fixed fees?

Fixed fees can cover transaction handling or platform economics and may matter more for low-value transactions.

What is an effective processing rate?

Effective processing rate is total payment-related cost divided by processed payment volume for a defined period.

Why can international transactions cost more?

Cross-border transactions can involve different acquiring routes, network economics, currencies and additional provider charges.

What is FX in payment processing?

FX is foreign-exchange conversion between currencies; merchants should review the conversion rate, spread and timing.

What is settlement?

Settlement is the movement of funds to the merchant or relevant account after payment processing.

How long do card payments take to settle?

Settlement timing varies by provider, payment method, risk controls, weekends, holidays and market.

What is a payment service provider (PSP)?

A PSP combines some or all payment acceptance services into a platform, often reducing the need for separate integrations.

Should every business accept digital wallets?

Wallet acceptance can improve checkout convenience where the customer base uses those wallets; relevance depends on market and device mix.

What is ACH?

ACH is a US electronic bank-payment network used for transfers including certain business-to-consumer and business-to-business payment flows.

What are Bacs and Faster Payments?

Bacs and Faster Payments are UK payment systems with different use cases, processing models and timing.

What is SEPA?

SEPA is the Single Euro Payments Area framework and associated schemes supporting euro payments across participating countries.

What is Direct Debit?

Direct Debit allows a merchant to collect funds from a customer under a mandate, subject to scheme and country rules.

What is a chargeback?

A chargeback is a card dispute mechanism that can reverse a transaction through issuer, network and acquirer processes.

How does a chargeback differ from a refund?

A refund is initiated by the merchant; a chargeback is a dispute process initiated through the cardholder and issuer pathway.

What is card-not-present fraud?

Card-not-present fraud occurs when payment credentials are used without the physical card being presented, often in ecommerce.

What is 3-D Secure?

3-D Secure is a cardholder-authentication framework used to add an authentication step or risk signal to eligible card-not-present transactions.

What is tokenisation?

Tokenisation replaces sensitive payment credentials with a token that can be used within a controlled payment environment.

What is PCI DSS?

PCI DSS is a security standard covering organisations that store, process or transmit payment-card data.

What is Strong Customer Authentication?

Strong Customer Authentication is an authentication requirement in relevant European payment contexts, subject to scope and exemptions.

What is a payment decline?

A payment decline means the attempted transaction was not authorised or otherwise could not complete.

How can merchants reduce payment failures?

Use accurate payment data, clear decline handling, retries where appropriate, good authentication design and multiple relevant payment methods.

What should a merchant ask a provider before signing?

Ask about total cost, supported markets, settlement, reserves, disputes, fraud tools, integrations, support, contract terms and exit provisions.

Can a business use more than one payment provider?

Multiple providers can support resilience, regional coverage or specialised payment methods, but they add integration and operational complexity.

What should an international merchant consider?

International merchants should review local payment preferences, currencies, acquiring, settlement, compliance, refunds, disputes and FX.

How should a merchant review payment costs?

Review total payment costs by method and market and calculate an effective rate rather than relying only on headline pricing.

Is Merchant Atlas legal or financial advice?

No. The site provides general educational information and is not a substitute for professional legal, tax, accounting or financial advice.