Reviewers see Mercury as useful for startup operations when it works: setup is easy, the interface is clean, and features like virtual cards, integrations, wires, and multi-account management are often praised. A founder from
CatDoes specifically highlights the API for bank-account and transaction access, while other founders say it suits foreign founders and contractor payments. But the sharpest criticism is reliability: several users report abrupt compliance reviews or account closures, delayed fund access, weak communication, and slow support, with some also frustrated by low card limits.