R2fk is a system that enables a complex bookkeeping in its full form as general ledger accounting and additionally as an option in the form of a revenue and expense ledger or a flat-rate revenue register. It consists of numerous additional modules allowing to keep all required records and enabling full tax settlements of the company and its owners with a tax office. During the design of R2fk programme a special emphasis has been put on the speed of data entering without the use of a mouse. Optimised entering of documents and the whole control system enables a change in work organisation – data can be entered by a person who is not qualified in bookkeeping and an accountant only checks and closes the calculations. Thanks to frequent advice from experts, who run their own accounting offices, all the details of the software have been carefully refined.