Best Payment Processing Companies in 2026: Fees and Fit The best payment processing company depends on how you sell. A coffee shop taking tapped cards all day, an online store with $25 orders and a SaaS firm billing monthly are all different problems, and the cheapest headline rate rarely tells you which one a provider solves.
This guide compares six well-known payment processing companies (Stripe, Square, PayPal, Clover, Helcim and Adyen) using...