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Sonder Payments Company Overview
Sonder Payments is a private payment technology company founded in 2018 and based in St. Louis, Missouri. It delivers a flat-rate, membership-based payment processing model designed for high-ticket merchants, charging a fixed transaction fee of approximately eight cents plus interchange rather than applying percentage-based markups. The company supports businesses in sectors such as e-commerce, retail, SaaS, franchises, and B2B, connecting them through a unified payments platform that spans POS, virtual terminals, developer APIs, and recurring billing tools. Sonder emphasizes pricing transparency, fast settlement, and dedicated solutions architects to provide personalized support, while leveraging backend infrastructure from Worldpay to ensure enterprise-grade scale and reliability.