Dodgy traders will be named and shamed in 2016 on a NSW government website that will help consumers avoid the most complained-about companies.

From July 1, the first data on complaints about goods and services that names the offending company will be published on the NSW Fair Trading website, and it will be updated monthly.

Complaints data is "a vital asset" that should be used, Minister for Innovation and Better Regulation Victor Dominello says. Credit:Orlando Chiodo

For a trader to appear on the register, at least 10 complaints must have been made against them to Fair Trading that month.

Legislation to allow consumer complaints received by the government watchdog to be shared publicly came into effect this week.