Reviewers mostly describe Brex as easy to use and strong for organizing company spending, with praise for fast onboarding, high credit limits, virtual cards, integrations, bill pay, cash management, and a finance-friendly dashboard. Several also value rewards, perks, and the founder community. But the negatives are serious: some users say bill pay, reimbursements, and the mobile app can be buggy, reporting can feel limited, and frequent product changes create friction. Most notably, a few reviewers report abrupt account closures or offboarding with little warning or explanation.