SouTag is a digital fuel marketplace operating in Brazil. The company connects professional drivers—including ride-hailing drivers, taxi operators, and truckers—with a network of partnered gas stations. The application digitizes the refueling process by allowing users to locate nearby stations, secure discounted fuel rates, and process payments in a single interface. By aggregating fuel demand and negotiating directly with stations, the company provides transparent pricing and reliable access to essential vehicle resources.

SouTag also provides operational tools to address the high daily expenses of independent transport workers. Drivers use the application to track their fuel expenditures, manage cash flow, and increase their overall take-home earnings. Partnered gas stations use the system to attract high-volume professional drivers, increase daily fuel sales, and maintain steady customer footfall. These features combine with the core marketplace operations to reduce vehicle operating costs and increase overall financial efficiency for transport providers.