Online gamblers in NSW will be hit with a 10 per cent tax on every bet they place in a new measure announced in this week’s state budget.

Due to be imposed from January 1, 2019, it is predicted the levy could earn the Berejiklian government around $100 million a year

“Following an extensive consultation period with stakeholders, this decision will resolve the disconnect between the jurisdiction where gambling activity occurs and where it is taxed,” Treasurer Dominic Perrottet said.

“The introduction of a point of consumption tax is an important step to ensure that we are levelling the playing field given the wagering tax paid by onsite operators.”

The tax, which will affect digital bookmakers like Ladbrokes and Sportsbet, is similar to other measures planned by three other state governments.

In Victoria the tax will be eight per cent and in Queensland and South Australia, 15 per cent.