Payment Processors · true cost · Updated September 2026
The true cost of payment processors
What you'll actually pay. Of the 8 payment processors tools we track, 6 price on a basis this column cannot carry. Here's every tool's entry price and its hidden-cost flags — each linked to its sourced record.
The hidden-cost picture
- Not priced monthly: 6 publish a figure on another basis — usage rates, non-USD, or annual-only.
- Cheapest published: Authorize.net from $25/mo.
- No overage or setup fee: Authorize.net, Stax (by Fattmerchant).
As of · re-verified with each catalog refresh
Payment Processors — entry price & hidden-cost flags
| Tool | Entry price | Usage overages | Setup fee |
|---|---|---|---|
| Authorize.net | $25/mo | — | — |
| Stax (by Fattmerchant) | $99/mo | — | — |
| Adyen | not priced monthly | — | — |
| Braintree (a PayPal service) | usage-priced | — | — |
| Helcim | not priced monthly | — | — |
| PayPal | usage-priced | — | — |
| Square | not priced monthly | — | — |
| Stripe | usage-priced | — | — |
Prices and fee terms re-verified with each catalog refresh. Last catalog update 2026-09-05. "Quote-only" means the vendor publishes no self-serve price.
Frequently asked questions
Does payment processors have hidden fees?
Across the 8 payment processors tools we track: 6 price on a basis this column cannot carry. As of 2026-09-05.
What is the cheapest payment processor with published pricing?
Authorize.net, from $25/mo. Verified 2026-09-03.
More on payment processors
Compare all payment processors · GDPR-compliant payment processors · Open data · MCP