Stax

Stax operates a B2B fintech software and payments model. It provides merchant-facing payment acceptance and billing software directly to businesses, while also offering embedded payment infrastructure to software platforms and ISVs. Value is created by combining software workflows such as invoicing, recurring billing, reporting, and onboarding with underlying payment processing and settlement infrastructure, enabling customers either to run their own payment operations or outsource them to Stax.

Stax is a US-based private payments technology company that sells merchant payment processing, subscription billing, invoicing, embedded payments infrastructure, and related payment operations tools. Its core offer centres on helping businesses accept and manage card and ACH payments across online, in-person, and mobile channels, while also serving software platforms and ISVs that want to embed payments into their own products.

The company makes money through a mix of fixed subscription fees, transaction-related payment economics, and value-added products such as billing automation, surcharging, and managed embedded payments support. Its customers are primarily SMB merchants, subscription businesses, and SaaS platforms or ISVs that need payment acceptance, billing automation, onboarding, settlement, and developer tooling in one stack.