Founded in 2014 as Fattmerchant and later rebranded to Stax Payments, the company provides an integrated, all-in-one platform for businesses to manage their payment processing. Stax's core business model disrupts traditional payment processing by offering a flat-rate subscription pricing model, eliminating percentage-based markups and hidden fees. The platform supports various payment types, including credit cards, debit cards, and ACH transfers, and is designed for businesses of all sizes, with a particular focus on software-as-a-service (SaaS) companies, independent software vendors (ISVs), and professional services. In late 2023, Stax was acquired by Fiserv, a global leader in payments and financial technology, and now operates as "Stax by Fiserv."

Founded in

United States