Kulcs-Soft is a Hungarian software company based in Budapest. Kulcs Könyvelés covers double-entry bookkeeping, Kulcs Bér covers payroll, and Kulcs Ügyvitel covers business management, including stock and invoicing. Under the name Kulcs Flow, the company also offers online services for invoicing and for the mandatory reporting of receipt data. The programs are sold as installed software with downloadable installers and updates, aimed at small and medium-sized businesses, accountants and payroll offices.
Kulcs-Soft Zrt. states that two Budapest hosting providers, Rackforest and Servergarden, store its data, and that its privacy notice contains GDPR information. For login to certain software and services the company uses Microsoft Entra ID, a cloud identity service run by a US company; the privacy notice does not state where that data is held. Hungarian headquarters and hosting in Budapest keep the core services within the EU, while the Microsoft login dependency should be assessed separately before using online services.