Brex

Brex is a corporate card, expense, bill pay, travel, and business-account platform. It is not a ledger. You apply for a Brex Mastercard (no personal guarantee; underwriting uses company cash, revenue, or funds raised), issue physical or virtual cards with spend limits, and employees book travel or snap receipts in the same app. Card charges land already categorized, often with a receipt attached. Out-of-pocket spend can be reimbursed. Bills can be entered and paid from the same login. You map GL codes, then send a bank feed plus a review-and-export of receipts, memos, and categories to QuickBooks Online or Xero. You still close the books there.

It covers more surface than Ramp (card-first spend with travel on the same login) or Expensify (a phone camera for out-of-pocket receipts). Navan is the closer booking-first stack if travel is the whole job. Mercury is the bank if you want operating cash without adopting a spend platform. Kick replaces QuickBooks; Brex sits next to it. One Brex account maps to one QuickBooks Online company. Extra entities need a CSV or a second Brex account.

People who stick are usually adding headcount and vendors fast, and they want one place for cards, reimbursements, and travel so a department budget is one number. They care most about controls at swipe and a coded export at close, not a simpler reimbursement app.