Fortnox AB (publ) operates a cloud-based platform for financial administration for small businesses, accounting firms, associations, and schools. It offers various programs and services for accounting, billing, quotation and order, stocks, salary, receipt and travel, direct debit, plant registry, supplier certificate and read, school support, time, invoice interpretation, credit information, e-invoice, invoice service, and invoice purchases. The company also provides insurance services.

Fortnox AB (publ) was founded in 1993 and is headquartered in Växjö, Sweden.