Brex started with a simple problem: newly funded startups had cash in the bank but no credit history, so banks asked founders for personal guarantees or deposits before issuing a corporate card. Brex set card limits from the company's cash balance instead, signed up more than 1,000 customers within months of its 2018 launch, and added cash accounts, bill pay, travel and expense software over the next six years. It moved upmarket in 2022, cut costs hard in 2024, and in 2026 became part of Capital One. The company is headquartered in San Francisco, California.
Brex makes most of its money from interchange, the fee a merchant's bank pays each time a Brex card is used. Sacra estimates Brex collects about 2.7% of card volume as gross revenue and keeps roughly 65% gross margin after paying its issuing and network partners. Software is a growing second stream: Brex Essentials is free, while Brex Premium costs $12 per user per month and adds approval chains, live budgets, AI expense audits and travel policies. Brex also earns fees from the partner banks and funds that hold customer cash, and transaction revenue from bill pay. The card is the entry point; software, banking and payments are sold as the customer grows.