Virtual Cash Register enables entrepreneurs issuing cash receipts virtually, i.e. without the necessity to buy an electronic cash register. All operations in respect of cash receipts are carried out electronically, using a PC or notebook connected to the internet. Business entities thus save a lot of financial expenditures as well as administration burden. Simplicity as well as financial affordability of the system eliminates to an important extent illegal transactions or the reluctance of entrepreneurs to use electronic cash register.