Top 30 Payment Processing Software for Small Retail

Curated list of the top 30 payment processing solutions tailored for small retail businesses.

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All‑in‑one hardware and software solution with flat‑rate fees, inventory tools, and real‑time analytics.

Integrated payment gateway for Shopify stores, offering seamless checkout and multi‑currency support.

Mobile card reader and POS app that syncs with PayPal accounts, ideal for pop‑ups and small storefronts.

Developer‑friendly in‑person payment solution with customizable hardware and unified online‑offline reporting.

Modular POS system with a range of hardware options, inventory management, and integrated loyalty programs.

Cloud‑based POS with advanced inventory, purchase order, and e‑commerce integration for small retailers.

User‑friendly POS that works offline, integrates with major e‑commerce platforms, and offers real‑time reporting.

Restaurant‑focused POS that also serves small food‑service retailers, featuring built‑in payment processing.

#10 PaySimple

Simple, flat‑rate payment gateway with recurring billing, invoicing, and easy integration for brick‑and‑mortar shops.

Versatile processor offering transparent pricing, mobile card readers, and robust fraud protection tools.

#12 Braintree

PayPal‑owned gateway supporting credit cards, PayPal, Apple Pay, and Google Pay with developer‑friendly APIs.

Long‑standing gateway with recurring billing, fraud detection suite, and easy integration with most POS systems.

Integrated with QuickBooks accounting, offering card processing, ACH, and automatic transaction syncing.

#15 SumUp

Low‑cost card reader with flat‑rate fees, mobile app, and no monthly contracts—great for small storefronts.

Compact card reader and POS app that syncs sales to PayPal, supporting inventory and analytics.

Enterprise‑grade gateway with transparent pricing, virtual terminal, and robust reporting for growing retailers.

#18 Payrix

White‑label payment platform enabling retailers to embed payments directly into their own brand experience.

Global payment gateway with support for over 100 currencies, recurring billing, and easy checkout integration.

#20 Adyen

Enterprise‑grade solution offering unified online, in‑app, and in‑store payments with advanced risk management.

#21 Mollie

European‑focused gateway with simple pricing, multiple payment methods, and ready‑to‑use plugins for POS.

#22 PayU

Emerging global processor with competitive rates, localized payment options, and easy API integration.

Comprehensive payment platform offering in‑store terminals, omnichannel reporting, and fraud tools.

#24 Payoneer

Cross‑border payment solution ideal for retailers selling internationally, with low‑cost global payouts.

Standard PayPal checkout with invoicing, QR codes, and integration options for small retail websites.

Retail‑focused point‑of‑sale that syncs with Shopify online stores, offering unified inventory and payments.

Free website builder with built‑in Square payment processing, ideal for small retailers expanding online.

Integrated payment processing for Lightspeed Retail users, with transparent fees and same‑day deposits.

Legacy mobile card reader solution (now merged into Zettle) still supported for existing users.

Web‑based checkout button with fraud protection, supporting credit cards, PayPal, Venmo, and more.

#31 Clover Go

Portable card reader that works with the Clover ecosystem, offering flexible pricing and inventory sync.

Hosted payment page that can be embedded in any site, with support for cards, wallets, and local payment methods.

Mobile app version of PaySimple, letting small retailers accept card payments on smartphones or tablets.