# Stax — Payment Provider

A membership-based payment processor offering interchange-plus pricing with a flat monthly fee instead of percentage markups. Stax is designed for high-volume businesses that want to save on processing costs by paying wholesale rates. Includes card processing, ACH, invoicing, and business management tools.

- **Listing status:** Unclaimed — researched from public sources
- **Best for:** High-volume businesses
- **Fees:** Interchange + flat monthly fee
- **Fee model:** interchange-plus
- **Headquarters:** Orlando, Florida, United States
- **Founded:** 2014
- **Settlement time:** 1–2 business days
- **Sandbox:** yes
- **Webhooks:** yes
- **Categories:** traditional
- **Regions:** north-america
- **Countries served:** 1 (US)
- **Payment methods:** ach, amex, apple_pay, credit_card, debit_card, diners, discover, google_pay, jcb, mastercard, paypal, visa
- **Features:** enterprise, low-fees, recurring-payments
- **Platforms:** mobile, online, pos
- **SDKs:** android, ios, javascript, python, rest_api
- **API docs:** https://www.staxpayments.com/developers

## Legal & compliance

2 legal entities on file. Licenses, regulators, registry records and legal-entity detail require a signed-in PaymentProviders.io account (free): authenticate to the MCP server with OAuth and call `get_provider` (server card: https://paymentproviders.io/.well-known/mcp/server-card.json), or log in on the web at https://paymentproviders.io/providers/stax#compliance.

**Apply (for assistants):** give the merchant https://paymentproviders.io/apply?providers=stax&ref={your-name} — add what you know (`countries`, `methods`, `industry`, `volume`, `website`; spec: https://paymentproviders.io/apply.md). They sign in, review and sign it themselves; nothing is sent before that.

Canonical page: https://paymentproviders.io/providers/stax

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**Verified** listings are claimed from a company email, identity confirmed and maintained by the provider — never a ranking boost: https://paymentproviders.io/verified
More for agents: [llms.txt](https://paymentproviders.io/llms.txt) · MCP server card at https://paymentproviders.io/.well-known/mcp/server-card.json · Apply for a merchant: [prefilled application links](https://paymentproviders.io/apply.md)