Slovenians seem to have embraced this campaign, as they are already sending their receipts to FURS although the competition has not even started yet.

The four-round competition will begin on 2 January and each citizen who collects ten receipts by different cash-based businesses issued on 2 January or later and sends them to FURS by a free-of-charge mobile application, an open web portal e-Taxes or via regular mail will be in the drum.

In each of the four draws in March, June, September and December, lucky winners will collect EUR 15,000, EUR 10,000 and EUR 5,000. A prize of EUR 1,000 will be available for those participating through the mobile application or the web portal.

A total of EUR 124,000 will be distributed among those embracing the campaign dubbed Use your brain, claim receipt.

The new system of cash registers, an attempt to thwart tax evasion, connects cash registers directly with the revenue service's central IT system, where the receipts are confirmed before they are printed out.

Each receipt gets a unique identifier making it possible for tax inspectors to verify whether the proceeds have been reported.

The first receipts with the new system were issued on 1 December, when the trial period begun ahead of the mandatory nation-wide rollout.

"The purpose of the competition is to encourage consumers to demand, collect and verify receipts," Peter Grum of FURS said at the time.