The core difference
Xero is built as full double-entry accounting software for businesses with inventory, multiple bank accounts, and growing complexity. FreshBooks is built primarily for service-based freelancers and small teams who bill by the hour or project and want invoicing to feel effortless.
Invoicing and client experience
FreshBooks wins here. Its invoicing, time tracking, and client portal are more polished out of the box, with less setup than Xero requires to get an equally clean invoice out the door.
Accounting depth
Xero pulls ahead once you need real accounting: multi-currency, inventory, more detailed financial reporting, and a wider app marketplace for connecting other business tools.
Pricing
FreshBooks entry plans are cheaper for solo freelancers with a handful of clients. Xero becomes the better value once you are managing more transactions or need proper bookkeeping rather than just invoicing.
Bottom line
Freelancer or consultant billing a small number of clients: FreshBooks. Small business with inventory, employees, or more complex books: Xero.