Just under half of businesses in the tourism sector checked by the Financial Crimes Squad (SDOE) between July 25 and August 5 were found to be committing offenses, the Finance Ministry said on Friday.
A total of 3,904 offenses, including restaurants and cafes not issuing receipts, were recorded.
The highest rate of offending was in Evia and Skyros, where 85 percent of businesses that were inspected ended up being penalized.
The lowest rate was in the Ioannina-Thesprotia-Preveza area, where one in four businesses checked by SDOE officials were not following the law.
The overall rate was 49.89 percent. A total of 731 people were fined.