ACE Money Transfer
ACE Money Transfer
14 Sep 2026
Choosing a payment processor determines how fast you get paid, how much each sale costs you, and whether your customers can pay the way they prefer. This guide breaks down the top 10 payment processors for 2026, compares their fees and features side by side, and maps each one to the business model it fits best.
The ten payment processors covered here serve different merchant profiles, with each company operating as a payment provider for a distinct set of merchant needs. Stripe leads for developer teams building custom checkouts across 135+ currencies. PayPal gets you accepting payments within minutes and carries broad consumer trust. Adyen powers enterprise omnichannel retailers with unified commerce capabilities. Square keeps pricing simple for in-person sellers. Checkout.com targets high-growth digital brands processing cross-border ecommerce at scale. Braintree handles subscriptions and marketplace payouts with strong vault and tokenisation features. Worldpay serves large UK and European merchants with negotiable volume pricing. Authorize.net gives gateway flexibility for businesses already managing multiple merchant accounts. GoCardless collects recurring payments via bank debit at a fraction of card costs. Fondy covers UK and European ecommerce with 300+ local payment methods. And Ace Money Transfer stands apart as the go-to app for sending international payments, remittances, and contractor payouts at competitive FX rates.
Here is the "best for" breakdown:
Best overall for online businesses: Stripe
Best for quick checkout and buyer trust: PayPal
Best for omnichannel enterprise retailers: Adyen
Best for small in-person sellers and POS: Square
Best for high-growth cross-border ecommerce: Checkout.com
Best for recurring billing and marketplace payouts: Braintree
Best for established high-volume UK/EU merchants: Worldpay
Best for gateway flexibility with multiple processors: Authorize.net
Best for bank debit subscriptions and invoiced services: GoCardless
Best regional gateway for UK and European ecommerce: Fondy
This article focuses on payment processing companies and online payment gateways that help merchants accept online payments. One dedicated section covers Ace Money Transfer for sending and collecting cross-border payments outside the traditional card-acquiring model.
A payment processor is the technology service that routes transaction data between the customer, the card network (Visa, Mastercard), the issuing bank, and the merchant account. Payment processors handle the transfer of transaction data between customers and banks, authorising or declining each transaction in milliseconds.
A payment gateway is the interface layer: it encrypts card details at checkout, passes them securely to the processor, and returns the result to the merchant's site or terminal. A merchant account is the bank account (or contractual relationship with an acquiring bank) where settled funds land.
Some providers bundle all three. Stripe, for example, acts as gateway, processor, and acquirer in one platform. Authorize.net, by contrast, is gateway-first: a merchant using it still needs a separate merchant account or acquirer behind it.
The simplified flow works like this: customer enters card details at checkout (gateway), which sends encrypted data to the payment processor, which routes it to the card network, which checks with the issuing bank, which approves or declines, and settled funds move into the merchant account.
Modern payment processing services bundle gateway, processor, and merchant account so you deal with one platform. This is how Stripe, Adyen, and Square operate. Processors also enable accepting card payments, digital wallets like Apple Pay and Google Pay, and sometimes bank transfers, covering the entire payment flow from checkout to settlement.
Key distinctions at a glance:
Payment gateway: encrypts and transmits card data; the "front door" of online payment processing
Payment processor: routes and settles the transaction between networks, banks, and merchant
Merchant account: where funds land after settlement
Full-stack provider: combines all three (Stripe, Adyen, Square, Checkout.com)
Gateway-only provider: handles data transmission but requires a separate acquirer (Authorize.net)
Choosing a payment processor requires evaluating costs, supported payment methods, security compliance, and system compatibility. We applied those criteria across the processors listed here.
Transaction fees: domestic vs cross-border rates, currency conversion markups, chargeback fees, and any monthly fees or setup fees
International transactions: number of supported currencies, local acquiring capabilities, cross-border fee structures
Payment methods: cards, digital wallets, local payment options (iDEAL, SOFORT, Klarna), bank transfers, and recurring payments
Developer experience: API quality, SDKs, sandbox environments, documentation, and pre-built integrations with ecommerce platforms
Compliance and security: PCI DSS, SCA support, fraud tools, and regulatory licences
Support and reliability: settlement speed, uptime, and quality of merchant support
Pricing and features referenced are accurate as of mid-2026; they may vary by country, merchant risk profile, and transaction volumes
The focus is on online payment processing services for SMEs, ecommerce businesses, SaaS, and omnichannel retailers in the UK, Europe, and global markets
Dedicated money transfer services like Ace Money Transfer are evaluated separately in their own section, covering cross-border payouts and remittances rather than card acquiring
Key factors in selecting a payment processor include pricing structure, supported payment methods, and security features. Selecting a payment processor also depends on business operations such as whether you sell online or in-person.
Stripe is an API-first payment processor and gateway that operates in over 195 countries. Startups, mid-market SaaS companies, and large enterprises use it for online payment processing, subscription billing, marketplace payouts, and in-person sales via Stripe Terminal. Stripe is ideal for developers seeking API flexibility, offering two checkout integration options for different coding skills: a pre-built hosted checkout and a fully custom integration via its Elements SDK.
Stripe enables businesses to accept over 100 payment methods, including major cards, Apple Pay, Google Pay, and dozens of local payment methods. It supports over 135 currencies for display and acceptance, making it one of the strongest options for international expansion.
Transaction fees in the UK break down as follows: Stripe charges 1.5% + 20p for UK cards. EU/EEA cards cost 2.5% + 20p. Non-EEA international cards run about 3.25% + 20p. Currency conversion adds roughly 2% on top when funds settle in a non-home currency. In-person transactions via Stripe Terminal cost about 1.4% + 10p for EEA cards. Chargeback disputes carry a £20 fee in the UK.
Features: recurring billing, invoicing, global payouts, Stripe Radar fraud detection, identity verification, payment links, and Connect for marketplace disbursements
Fees: 1.5% + 20p domestic UK; 2.5% + 20p EU; ~3.25% + 20p non-EEA; plus FX surcharges on currency conversion
Pros: rich API ecosystem, extensive documentation, 135+ currencies, strong fraud controls, unified dashboard for financial operations
Cons: cross-border and FX fees add up for merchants with heavy international traffic; post-Brexit, EU cards are treated as international in the UK; fee structure complexity can surprise merchants at scale
Ideal for: fast-growing ecommerce, SaaS platforms, developer-heavy teams, businesses processing payments across many countries
PayPal is recognized for fast setup and broad consumer trust. A merchant can create a PayPal business account and start collecting payments within hours, without a traditional bank merchant account. PayPal functions as both a payment gateway and a de-facto merchant account, which removes the acquiring bank relationship from the merchant's setup checklist.
PayPal offers fast setup but has higher transaction fees than several competitors. PayPal fees start at 1.2% + fixed fee for UK cards on certain plans, but standard online transactions typically run above 2.5% + fixed fee. Cross-border and currency conversion fees push that higher. The fee structure is complex: different rates apply to QR code payments, invoiced payments, phone payments, and Pay Later transactions.
Payment methods: PayPal Wallet, credit and debit card payments, Pay Later (buy now pay later), Venmo (US), and integrations with Shopify, WooCommerce, and major marketplaces
Global reach: available in 200+ markets; consumers in many countries already have PayPal accounts, reducing checkout friction
Pros: instant brand recognition and buyer/seller protection; fast onboarding with no monthly fees on standard plans; wide platform integrations
Cons: transaction fees are among the highest for online card payments; occasional account holds on newer or high-volume accounts; complex pricing tiers; limited control over the checkout UX compared with API-first processors
Ideal for: small businesses, freelancers, and merchants wanting to accept online payments quickly without developer resources
Adyen is an enterprise-grade payment processing platform that bundles gateway, acquiring bank, and risk management on one unified system. It supports high-volume merchants with unified commerce capabilities, connecting online, in-store, and in-app payments through a single integration. Adyen accepts over 100 payment methods globally and offers global acquiring in over 70 currencies.
Adyen has a fixed processing fee of £0.11 plus method-specific fees, using an interchange++ model that passes interchange and scheme fees transparently with a small markup. There are no setup fees or monthly fees in most configurations. This pricing structure favours enterprise businesses processing large transaction volumes, where the per-transaction fixed cost is a small fraction of the average transaction value.
Adyen integrates advanced machine-learning-powered fraud detection tools and provides 3D Secure support to help merchants meet Strong Customer Authentication requirements. Adyen offers comprehensive integration guides for various platforms, including pre-built options for Salesforce Commerce Cloud, Magento, and custom API builds.
Core features: unified commerce across channels, local acquiring in dozens of markets, tokenisation, recurring payments, and detailed reporting
Pricing: interchange++ with fixed £0.11 processing fee; method-specific add-ons; no monthly gateway fee
Pros: transparent pricing at scale, strong risk management tools, deep local payment method coverage, multi-currency settlement options
Cons: custom pricing requires direct engagement; onboarding is more complex than plug-and-play options; minimum volume thresholds may exclude very small merchants
Ideal for: large retailers, global marketplaces, platforms, and omnichannel businesses processing high transaction volumes
Square provides a flat-rate pricing model for small businesses, combining payment processing with a full POS ecosystem. Cafes, retail shops, pop-ups, and service businesses use Square to accept card payments in person and online without negotiating custom rates or signing long contracts.
Flat-rate pricing offers predictable costs for small businesses. Square's model means the same percentage applies whether a customer taps a Visa debit card or swipes an Amex. In the UK, in-person card reader transactions run about 1.75%, and online transactions are about 2.5%. There are no monthly fees on the basic plan, no setup fees, and no early termination fees.
Square's hardware lineup includes the Square Reader (contactless and chip), Square Terminal, and Square Register. Each device integrates with Square's software for inventory management, invoicing, basic CRM, and staff scheduling. Square also supports online payment links, a basic online store, and invoicing for businesses that want to accept online payments without building a full ecommerce site.
Pricing: flat rate; no monthly fees or hidden charges on the basic plan
Hardware: readers from about £16; terminals and registers at higher price points
Pros: simple fee structure, fast setup, good for businesses with low to medium transaction volumes, integrated software suite
Cons: limited multi-currency options; primarily domestic settlement; less suited for complex international transactions, large SaaS platforms, or businesses needing diverse payment methods across many countries
Ideal for: local service businesses, coffee shops, market traders, pop-up stores, and solo operators
Checkout.com is a modern payment processing company focused on high-growth digital businesses, marketplaces, and cross-border ecommerce. It processes payments in over 145 currencies with local acquiring in multiple regions, which improves authorization rates and reduces cross-border fees for merchants selling internationally.
Checkout.com supports multiple integration options including APIs and plugins, giving technical teams flexibility in how they build their checkout experience. Pricing is often interchange-plus or tailored blended fees, typically attractive for merchants processing £500k+ per month. Smaller merchants may find the onboarding process and custom pricing discussions more involved than with plug-and-play gateways.
Global coverage: 145+ currencies, local acquiring in Europe, Asia, Middle East, and North America
Fraud tools: real-time risk engine, 3D Secure, and configurable rules for managing chargebacks
Reporting: unified API and dashboard for monitoring approval rates, transaction fees, and settlement across regions
Pros: high authorization rates through local acquiring, competitive pricing at volume, strong multi-currency and alternative payment methods support
Cons: not designed for micro-merchants; documentation can be less accessible than Stripe's for smaller dev teams; pricing requires direct negotiation
Ideal for: digital-first brands, travel companies, gaming platforms, and subscription businesses with high cross-border payment volumes
Braintree, owned by PayPal, is a payment gateway and processor with strong support for card payments, PayPal, and digital wallets like Apple Pay and Google Pay. Its focus is on online businesses and apps that need recurring billing, subscription management, or marketplace payouts.
Pricing follows a percentage + fixed processing fee per transaction model, with additional charges for cross-border and FX. In many markets, there are no monthly gateway fees. Braintree's developer SDKs support tokenisation and a vault for stored cards, which makes it straightforward for SaaS companies to handle failed payment retries and subscription renewals. Multi-currency support spans 40+ countries.
Supported methods: Visa, Mastercard, Amex, PayPal, Apple Pay, Google Pay, Venmo (US)
Subscription features: recurring billing engine, prorated charges, trial periods, and dunning management
Pros: deep PayPal integration, developer-friendly SDKs, no separate gateway fee in many plans, strong for marketplace split payments
Cons: account approval can take longer than pure aggregators; support quality varies by region and account size; cross-border fees can be higher than lowest-cost pure card acquirers
Ideal for: SaaS businesses, subscription apps, marketplaces, and merchants that want PayPal tightly integrated into their checkout
Worldpay processes about 70-80% of UK card transactions, making it one of the largest payment processing services in Europe. Now part of FIS, it serves enterprise-scale merchants across 146 countries and also provides end-to-end payment solutions for financial institutions, supporting 135 currencies for card payments, recurring billing, and omnichannel setups.
For UK online ecommerce, standard consumer Visa/Mastercard rates start from about 1.3% + 20p. Commercial cards, Amex, and international cards often cost around 2.9% + 20p or more. POS bundles (Worldpay 360) run from £49/month (Lite) to £89/month (Pro), plus per-transaction fees. Worldpay offers hosted payment gateway solutions and API integration options, and its fraud tools include FraudSight (AI-powered) and 3DS Flex.
Worldpay supports several alternative payment methods including PayPal and Klarna, alongside standard card acceptance and payment links. Its reporting and reconciliation dashboards serve large retailers and hospitality groups managing high transaction volumes across multiple locations.
Coverage: 146 countries, 135 currencies, in-store and online
Pricing: custom-quoted; interchange-plus or blended, favoring higher-volume merchants who negotiate
Pros: massive UK market share, mature fraud and risk tools, wide POS hardware range, strong for multi-channel operations
Cons: contracts often run 12-36 months with early termination fees; pricing is opaque for small businesses; onboarding can be slower than aggregator PSPs
Ideal for: large UK retailers, hospitality chains, and enterprise businesses processing high volumes across channels
Authorize.net is a long-standing payment gateway owned by Visa. Rather than acting as a full-stack processor, it connects to many acquiring banks and payment processors behind one gateway interface. This makes it useful for merchants who want routing flexibility or redundancy across multiple merchant accounts.
Authorize.net charges a monthly gateway fee plus a per-transaction fee. In some markets, bundled plans include a merchant account. Features include recurring billing, invoicing, a customer information manager (vault for stored card data), and fraud detection tools such as AVS checks, CVV verification, and configurable transaction filters.
Role: gateway-first; merchants connect one or more acquirers behind it
Pricing: monthly gateway subscription + per-transaction charges; bundled plans available
Strengths: flexibility to route transactions to different processors; strong recurring billing and tokenisation; established track record
When not to choose it: if you want an ultra-simple all-in-one payment service provider with no monthly fees; if you need broad local payment methods coverage outside North America; if you lack technical resources for integration
Ideal for: established ecommerce stores, B2B services, and merchants managing multiple processor relationships
GoCardless collects payments via bank debits (Bacs Direct Debit in the UK, SEPA in the EU, ACH in the US) rather than card payments. This makes it ideal for businesses that collect recurring payments from subscribers, members, or invoiced clients.
The standard UK plan costs 1% + 20p per transaction, capped at £4. Advanced and Pro tiers run slightly higher but include additional fraud recovery tools, verified mandates, and custom checkout branding. There are no setup fees; pricing is pay-as-you-go.
GoCardless supports collecting from payers in 30+ countries with transparent FX and settlement into the merchant's primary currency. Because bank debits bypass card networks, transaction fees are lower and chargebacks (called "direct debit indemnity claims") are less frequent than with card payments.
Use cases: SaaS subscriptions, gym memberships, utility billing, invoice collection, accounting software integrations (Xero, QuickBooks, Salesforce)
Pros: lower cost than card processing for recurring payments; high payment success rates; integrations with billing and accounting software; reduces failed payment friction
Cons: not a full card payment processor; settlement can take 3-5 business days for Bacs; customers must have a bank account in a supported scheme; most merchants pair it with a separate card gateway for one-off ecommerce payments
Ideal for: subscription businesses, membership organisations, and professional services collecting regular invoices
Fondy is a UK and Europe-focused payment gateway and processor supporting 300+ payment methods, including cards, Apple Pay, Google Pay, and local European options like iDEAL, SOFORT, and Bancontact. Its adaptive checkout displays local payment methods based on the customer's location and also supports global payment methods for merchants selling beyond their home market, which can improve conversion for merchants selling across EU and UK markets.
Multi-currency checkout is built in, with settlement options in several currencies. Transaction fee ranges start around 0.9% in some markets, though detailed pricing depends on region, payment method, and volume. Fondy offers no-code tools including payment links, a hosted checkout page, 30+ ecommerce plugins, and mobile SDKs.
Features: adaptive checkout, multi-currency settlement, 300+ payment methods, plugin integrations for Shopify, WooCommerce, Magento, and others
Pros: strong local payment options coverage across Europe; conversion-optimised checkout; competitive pricing in certain corridors
Cons: lower brand awareness outside UK/EU; volume negotiations required for best rates; less global reach than Stripe or Adyen
Ideal for: UK businesses selling across the UK and Europe that need strong local method coverage and a checkout optimised for diverse payment methods
Revolut Business is a digital business account provider that also offers online payment processing. For SMEs already using Revolut for business banking, adding card acceptance through the same platform simplifies financial operations and cash flow management.
Features include multi-currency accounts in 30+ currencies, the ability to collect payments via checkout, invoices, and payment links, and holding balances in multiple currencies without forced conversions. Card processing fees run around 1-1.3% + a fixed fee for domestic cards, with higher rates for international and business cards. FX markups apply when converting between currencies, though Revolut's interbank rates are competitive during business hours.
Banking + processor combo: accept payments, hold funds, pay suppliers, and manage payroll from one dashboard
Pros: reduced FX friction for international payments; real-time spending analytics; no separate merchant account needed
Cons: card processing tools are simpler than dedicated enterprise processors; limited advanced fraud controls compared with Stripe or Adyen; best suited for small to mid-sized, digitally-native businesses
Ideal for: SMEs with international suppliers, freelancers collecting payments in multiple currencies, and businesses wanting banking and payment processing in one platform
ACE Money Transfer is a specialised international remittance provider offering a digital way for individuals, freelancers and small businesses to send money across borders. Depending on the destination and available services, customers can send funds through supported bank accounts, wallets, cash pickup and other delivery options.
It is not a traditional payment processor for card acquiring. Instead, it specialises in cross-border remittances, contractor payouts, and supplier payments at rates that undercut legacy banks.
Use cases include sending money from the UK to South Asia and Africa, paying overseas contractors, and receiving international payouts through multiple channels. Recipients can collect funds via bank deposit, mobile wallet, or cash pickup, depending on the corridor. In busy corridors like UK to India, Pakistan, Bangladesh, and the Philippines, the exchange-rate margin above mid-market runs between 0.1% and about 1.5%. In wider corridors such as Nigeria, margins approach 4.99%.
The mobile-first experience includes an intuitive app with real-time transfer tracking, push notifications, and strong security. Ace Money Transfer is FCA-authorised and safeguards customer funds in separate accounts. KYC and AML compliance checks are built into the onboarding process.
How Ace Money Transfer complements a card processor: merchants use Stripe, PayPal, or another processor to accept card payments from customers. They then use Ace Money Transfer to move funds internationally to partners, remote teams, or family at lower cost and higher speed than standard cross-border bank transfers. This split reduces overall international payment costs while keeping card acceptance seamless.
Core capabilities: bank deposit, mobile wallet, and cash pickup in dozens of countries; transparent fees and forex spreads published before each transaction; FCA-authorised
Strengths: low exchange spreads in popular corridors; app-based speed; multiple payout options; coverage across key markets in Asia, Africa, and beyond
Ideal for: individuals sending remittances, freelancers paying or receiving from abroad, small businesses with overseas suppliers or contractors, and anyone needing fast, affordable global payment transfers
Transaction fees for card payments consist of three components: interchange (paid to the issuing bank), scheme fees (Visa, Mastercard network charges), and the processor's markup. In the UK and EU, interchange for consumer cards is capped by regulation at roughly 0.2% for debit and 0.3% for credit. Cross-border and commercial cards are not capped, which is why international transactions cost more.
Payment processors charge transaction fees based on sales volume and pricing structure. The three main pricing models work as follows:
Flat-rate pricing: a fixed percentage + fixed fee per transaction regardless of card type. Flat-rate pricing typically ranges from 2.5% to 3.5% per transaction. Square and some PayPal plans use this model. It offers predictable costs for small businesses but can be expensive at higher volumes.
Interchange-plus pricing: passes interchange and scheme fees transparently, then adds a processor markup on top. Interchange-plus pricing separates interchange fees from processor markup. Interchange-plus pricing is often cheaper at higher transaction volumes. Adyen, Checkout.com, and custom Stripe plans use this model.
Subscription pricing: involves a monthly fee plus per-transaction charges, often with lower per-transaction rates. Some Authorize.net plans and enterprise Worldpay contracts follow this approach.
Fees beyond the headline rate matter as much as the rate itself:
Chargeback / dispute fees (Stripe charges £20 per dispute in the UK)
Cross-border fees when the card's issuing country differs from the merchant's country
Currency conversion markups when the transaction currency differs from the settlement currency
Monthly fees, minimum volume commitments, and early termination fees (common with Worldpay contracts)
PCI compliance fees charged by some acquirers
Payment processors should offer deposit times that align with customers' cash flow needs; payout speed affects cash flow management
Processors vs money transfer apps on FX: card processors apply per-transaction FX markups (often 1-2% on top of the transaction fee) when settling in a different currency. Ace Money Transfer uses mid-market-linked rates with transparent transfer fees, often totalling 0.1-1.5% in popular corridors. For outbound international payments, this can be meaningfully cheaper than converting through a card processor.
Multi-currency support matters because customers convert at higher rates when they see prices in their local currency, and merchants lose margin on forced FX conversions during settlement. A processor's scalability for future growth depends in part on how well it handles multiple currencies and cross-border payments.
Stripe supports 135+ currencies for international expansion but charges 2.5-3.25%+ for non-domestic cards, plus FX conversion fees
Adyen offers global acquiring in over 70 currencies with interchange++ pricing that rewards local acquiring and reduces cross-border surcharges
Checkout.com processes payments in over 145 currencies with local acquiring in multiple regions, improving authorisation rates for international online sales
Worldpay supports 135 currencies across 146 countries; pricing favours merchants who negotiate volume-based cross-border rates
Fondy focuses on UK/EU with multi-currency checkout and settlement, strong on European local payment options
Square is weaker in international reach; limited multi-currency settlement outside core markets
ConnectPay provides scalable payment processing for cross-border operations as a licensed Electronic Money Institution
Airwallex supports multi-currency accounts for global transactions, particularly for businesses needing to hold and convert funds across many currencies
When to prioritise strong multi-currency acquiring: if you sell in five or more markets, handle heavy cross-border traffic, or need to settle payments in the local currency to pay regional suppliers. When a separate solution is better: if most of your card acceptance is domestic but you need to send funds internationally, pairing a domestic card processor with Ace Money Transfer for outbound payouts can reduce total FX costs.
Supported payment methods should include credit cards, contactless payments, and digital wallets. The processor must support major credit and debit cards as well as digital wallets like Apple Pay and Google Pay. Missing a payment method that a customer expects at checkout increases cart abandonment.
Which top payment processors excel at wallet support:
Stripe: Apple Pay, Google Pay, Link, and dozens of local wallets (Alipay, WeChat Pay, GrabPay, etc.)
Braintree: Apple Pay, Google Pay, PayPal, Venmo; strong tokenisation and vaulting for stored cards
Adyen: Apple Pay, Google Pay, Samsung Pay, local wallets across Asia and Europe
Checkout.com: Apple Pay, Google Pay, plus regional wallets; supports diverse payment methods across 145+ currencies
Fondy: Apple Pay, Google Pay, plus European local payment methods (iDEAL, SOFORT, Bancontact)
Mollie supports over 35 payment methods including iDEAL and Klarna, with pre-built integrations for various ecommerce platforms
Trust Payments offers digital wallets like Google Pay and Apple Pay
Worldpay supports Apple Pay, Google Pay, PayPal, and Klarna as alternative payment methods
Apple Pay and Google Pay work as payment methods routed through the merchant's processor. Apple does not charge merchants an extra fee for Apple Pay transactions; standard processor and bank transaction fees apply. The UX advantages include one-click checkout, biometric authentication, and mobile-optimised flows that reduce fraud and improve cart completion.
To enable wallets via your chosen processor:
Verify your domain and register with Apple (Apple Pay certificate) and Google (merchant ID)
Ensure your site uses SSL/TLS encryption
Use the processor's SDK or hosted checkout component that includes wallet buttons
Test wallet flows in sandbox mode before going live
Confirm that your processor passes wallet transactions through 3D Secure where required by SCA regulations
A traditional merchant account is a direct contractual relationship between the merchant and an acquiring bank. The merchant undergoes underwriting, receives a dedicated account, and gets custom pricing. Modern PSPs like Stripe, PayPal, and Square aggregate merchants under one master merchant account, which changes the onboarding experience and the risk profile.
Pros of PSPs:
Fast onboarding (often same-day)
No direct relationship with the acquiring bank to manage
Simpler fee structure with no separate interchange statements
Lower barrier for startups and small businesses
Cons of PSPs:
Less control over risk rules and reserve requirements
Possible account holds or freezes if the PSP's fraud system flags activity
Higher transaction fees at scale compared with negotiated merchant account rates
Pros of dedicated merchant accounts:
Custom, negotiable pricing tied to your transaction volumes and average transaction value
More control over settlement timing, reserve policies, and chargeback thresholds
Potentially lower transaction fees for enterprise businesses
Cons of dedicated merchant accounts:
Longer underwriting process (days to weeks)
More complex setup and ongoing compliance obligations
Separate gateway integration often required
Which option fits which stage:
Startups and freelancers: PSPs (Stripe, PayPal, Square) for speed and simplicity
Scaling SMEs processing £50k+/month: evaluate moving to interchange-plus merchant account pricing through Adyen, Checkout.com, or Worldpay
High-volume enterprises: dedicated merchant accounts with negotiated rates, potentially using multiple acquirers behind an orchestration layer
Security features should include tokenisation, encryption, and fraud protection measures. Payment processors must maintain PCI DSS compliance. Any processor or payment gateway handling card data needs to meet these baseline requirements, and merchants should verify compliance before signing.
Advanced fraud tools separate the top payment processors from basic options. Adyen integrates advanced machine-learning-powered fraud detection tools that score transactions in real time. Stripe Radar uses ML models trained on data from millions of global businesses to flag suspicious activity. Checkout.com offers a configurable risk engine with rules and velocity checks. Worldline has tightened its risk appetite policy due to rising cybercrime, reflecting a broader industry trend toward stricter fraud controls.
Payment gateways should offer fraud prevention tools and encryption as standard. Strong Customer Authentication (SCA) in the UK and EU requires two-factor verification for many online card payments. Processors that handle 3D Secure well (routing challenges only when necessary, applying exemptions where allowed) protect conversion rates while staying compliant.
For money transfer apps like Ace Money Transfer, KYC and AML checks matter just as much. Ace Money Transfer verifies user identity during onboarding and monitors transactions for suspicious patterns, as required by its FCA authorisation.
Questions to ask your processor before signing:
What fraud detection tools are included in the standard plan, and which cost extra?
What is your chargeback fee, and how do you handle disputes?
Do you support 3D Secure with exemption management to protect conversion?
How do you store card data; is tokenisation standard?
What SCA compliance features do you provide for UK and EU debit card transactions?
What are your data export and portability options if I need to migrate?
The processor's technology integration should be evaluated for ease with existing systems. Payment processors must integrate smoothly with existing ecommerce platforms or POS hardware. The range of integration options varies from zero-code to full API builds.
Stripe provides two checkout integration options for different coding skills: Stripe Checkout (hosted, minimal code) and Stripe Elements (custom, full API control). Documentation is extensive, sandbox mode is free, and community support is broad. Stripe is the benchmark for developer experience.
Braintree offers strong SDKs for web and mobile, sandbox testing, and drop-in UI components. Its PayPal integration is the smoothest available, given shared ownership.
Adyen offers comprehensive integration guides for various platforms, including Salesforce Commerce Cloud and Magento. Its API is powerful but geared toward enterprise teams with more complex needs.
Checkout.com supports multiple integration options including APIs and plugins for major platforms.
Simpler providers like Square, PayPal Standard, and Fondy offer fast plug-and-play options suitable for non-technical merchants, including hosted checkout and payment links.
Mollie has prebuilt integrations for various ecommerce platforms, making it a quick option for merchants on Shopify, WooCommerce, or Magento.
Worldpay offers hosted payment gateway solutions and API integration options for both online and in-store setups.
Ace Money Transfer is typically integrated at the payout layer via its app or simple tools rather than embedded checkout for accepting card payments.
When choosing, consider:
Do you have in-house developers, or do you need a no-code solution?
How fast do you need to go live?
Will you need to customize the checkout experience or is a hosted page sufficient?
Does the processor offer sandbox/test mode for validating integrations before launch?
Matching a processor to your business type is more useful than chasing the lowest headline rate. Here is how different business models map to processor priorities.
Ecommerce stores selling globally need high authorisation rates across geographies, low cross-border fees, and multiple payment options. Stripe, Adyen, Checkout.com, and Fondy are strongest here.
SaaS and subscription businesses need recurring billing, card vaulting, failed payment recovery, and bank debit options. Stripe, Braintree, and GoCardless cover these requirements. Pairing a card processor with GoCardless for direct debit collections can reduce payment failure rates on renewals.
Marketplaces need the ability to disburse funds to third-party sellers, handle KYC for sub-merchants, and manage split payments. Stripe Connect and Braintree Marketplace are purpose-built for this.
Brick-and-mortar retailers and service businesses need POS hardware, flat predictable fees, and support for contactless and point of sale payments. Square, Worldpay, and Adyen POS serve this segment.
International sellers can combine a card processor with Ace Money Transfer to handle outbound payments to suppliers, contractors, or remote teams at lower cost than processor-mediated FX conversions.
Key self-assessment questions:
What is your monthly transaction volume, and what is your average transaction value?
What percentage of your online sales come from outside your home country?
Do you need to accept diverse payment methods or local wallets in specific markets?
Do you care about same-day or next-day settlement, or is T+2 acceptable for your cash flow?
Do you have developer resources to build custom integrations, or do you need plug-and-play?
Is business growth likely to take you into new countries or channels in the next 12-24 months?
Multiple processors make sense in specific scenarios, not as a default. Vendors should be assessed on their reliability based on user reviews and contract terms before adding complexity.
Scenarios where multiple processors add value:
Offering PayPal alongside Stripe as an alternative wallet option at checkout increases conversion for customers who prefer PayPal
Combining a card processor with GoCardless for bank debit collections reduces cost on recurring payments and lowers failed payment rates
Using a card processor for accepting card payments and Ace Money Transfer for outbound international payments to suppliers or contractors
Running a backup processor for failover if the primary provider experiences downtime; customer support and reliability are critical for minimizing payment downtime
Scenarios where multiple processors add unnecessary overhead:
Low transaction volumes (under £10k/month) where the reconciliation burden outweighs fee savings
Businesses selling in one country with one currency and one payment method
Teams without technical resources to maintain multiple integrations
Challenges to plan for: reconciliation across providers, multiple dashboards, varying settlement schedules, and the operational cost of maintaining separate reporting for each integration.
Use this checklist in vendor conversations:
What is the full breakdown of transaction fees, including interchange, scheme fees, and your markup?
What are the FX markups for international transactions, and do you offer like-for-like settlement to avoid forced currency conversion?
What is the chargeback fee, and how are disputes handled?
Are there monthly fees, minimum volume commitments, or authorisation fee charges?
What are the settlement/payout times, and do they align with my cash flow needs?
Do you support settling in multiple currencies?
What fraud detection and risk management tools are included, and which cost extra?
Is there 24/7 support, and what are the SLAs for merchant-facing issues?
How easily can I export transaction data or migrate to another provider?
What are the contract length and early termination fees?
Does the platform integrate with my ecommerce platform, accounting software, or POS hardware?
How do you handle SCA and 3D Secure in the UK/EU?
For money transfer apps like Ace Money Transfer, also ask:
What is the FX margin above mid-market in my key corridors?
What are the delivery times for bank deposits, mobile wallets, and cash pickups?
What regulatory licenses do you hold in both the sending and receiving countries?
International money transfers help individuals send financial support to family and friends across borders. ACE Money Transfer provides personal remittance services to 65+ receiving countries.
ACE Money Transfer offers personal remittance services with available delivery methods, while showing the applicable exchange rate and transfer fee before sending.
Customers can send money through ACE’s digital platform without needing to visit a physical location, making international remittances easier to access.
Exchange rates fluctuate, and the rate applicable to your transfer can differ from rates shown at another time. Check the current rate atacemoneytransfer.combefore sending.
Several shifts will reshape how merchants process payments and move funds over the next two to three years.
Real-time payments and open banking are gaining traction in the UK and EU. Account-to-account payments bypass card networks, reducing transaction fees for merchants and enabling instant payments for consumers.
Local payment methods are growing faster than card payments in several European and Asian markets. Merchants that only accept Visa and Mastercard miss a share of online transactions in countries where bank transfers, wallets, or buy-now-pay-later dominate.
Embedded finance is expanding: platforms now offer payment acceptance, business financing, payroll, and supplier payments within a single product. This intersects with digital payments and money transfer services.
Payment orchestration platforms route each transaction to the most cost-effective processor based on geography, card type, and payment method. Merchants using orchestration alongside processors can reduce fees and improve authorization rates.
Cross-border payout solutions are getting faster and cheaper. Dedicated money transfer apps like Ace Money Transfer and advanced processors are converging on near-instant delivery in popular corridors.
Regulatory pressure is increasing on FX transparency and consumer protection, which will push down margins on currency conversion and make pricing more transparent across payment service providers.
There is no single "best" payment processor. Stripe suits developer-led teams selling globally. PayPal works for merchants wanting speed and trust. Adyen and Checkout.com serve enterprises and high-growth brands. Square simplifies in-person selling. Worldpay anchors large UK operations. GoCardless handles recurring bank debits at lower cost than cards. Fondy covers European local payment methods. Authorize.net offers gateway flexibility. Braintree powers subscriptions and marketplaces.
Map your current and future payment needs before committing. Consider which channels you sell on, which countries your customers are in, which currencies you need to settle in, and what your monthly transaction volumes look like. Then match those requirements to the processor profiles in this guide.
Next steps:
Test two or three processors in parallel with live transactions to compare actual approval rates and settlement times
Monitor transaction fees and FX costs monthly; small percentage differences compound at scale
Evaluate whether adding a specialized money transfer service like Ace Money Transfer could lower your overall international payment costs
Review your payment stack quarterly as your business grows into new markets or channels
Ask every provider the checklist questions above before signing a contract
Disclaimer: This article is intended for general informational and educational purposes only and should not be construed as legal, regulatory, tax, business, or financial advice. While reasonable efforts have been made to ensure that all facts, figures, and data are accurate and valid as of the date of publication, no warranty or guarantee is given as to the ongoing completeness, accuracy, or currency of the information.
The content is based on information available at the time of publication. Regulations, government policies, market conditions, and service offerings may change over time and vary across jurisdictions and providers. As a result, some information may no longer be current or applicable. Readers should independently verify all information and consult qualified professional advisors before making any financial, legal, or business decisions.
