💡 Pick it for transparent pricing and a complete POS system with minimal setup.
Square is a popular payment processing solution that allows businesses to accept payments in person, online, and on the go.
Varies based on usage
Best Start Merchant Services Alternatives ranked by AI · updated Aug 2026
Start Merchant Services provides payment processing and merchant account services for businesses that accept card payments. Its offerings are aimed at small and midsize merchants needing card acceptance, payment terminals, and related processing support.
Developer: Start Merchant Services
Price: N/A; processing rates are quote-based
🎯 startmerchantservices.com
Top 6 Start Merchant Services alternatives
💡 Choose it for custom online payments, subscriptions, marketplaces, or developer-friendly APIs.
Stripe is a technology company that offers payment processing software.
Varies based on usage
💡 Pick it when you need dedicated retail or restaurant hardware with a broad POS app ecosystem.
Clover is a point-of-sale platform that offers a suite of business management tools for retail and restaurant businesses.
Varies based on features and business size
💡 Choose it for transparent interchange-plus pricing and lower costs at growing transaction volumes.
Helcim is a payment processor and merchant platform for small and midsize businesses accepting in-person and online payments. It emphasizes interchange-plus pricing,...
Pros
- More transparent interchange-plus pricing than many flat-rate providers
- No required monthly software subscription for core processing
- Includes invoicing, hosted checkout, and customer management tools
Cons
- Fewer integrations and global payment options than Stripe
- Less capable enterprise tooling than Adyen
- Availability is limited by supported countries and merchant categories
Interchange-plus pricing; no monthly software fee
💡 Pick it for inexpensive mobile card acceptance and fast setup with minimal operational complexity.
SumUp provides payment acceptance for small businesses through card readers, online checkout, invoices, and payment links. It is aimed at merchants that...
Pros
- Combines in-person card readers with online payment tools
- Straightforward setup for small merchants
- Supports payment links and invoicing without a complex integration
Cons
- Online customization is more limited than Stripe or Braintree
- Advanced subscriptions and marketplace features are weaker
- Payment-method coverage varies by country
No monthly fee on pay-as-you-go plans; transaction fees apply
💡 Choose it if customers already trust PayPal or you need quick online invoicing and payment links.
PayPal is a widely used online payment platform that allows users to make secure transactions globally.
Fee per transaction
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