Parliament passed amendments to the Alcohol Act on Wednesday, banning the "renting" or "loaning" of alcohol.
The change means any form of handing alcohol to consumers for a financial gain is defined as a retail sale.
The Consumer Protection Board has opened a number of investigations into the renting of alcohol, which usually takes place during the national alcohol sale ban hours, from 22:00 to 10:00 in the morning.
After the ban on alcohol sales during the night was enforced, schemes to rent alcohol for free or at low cost, but with a later return fee or deposit popped up.
The amendments will take effect from July 1.
Editor: J.M. Laats