Betfair Australasia is warning Australian state governments that their plans to impose online betting point of consumption taxes (POCT) are going to blow up in their faces.

On Friday, the Brisbane Times disclosed the existence of a report prepared by the Betfair Australasia betting exchange urging the state governments in South Australia and Western Australia to rethink their decision to impose a 15% tax on all online wagers placed by their states’ residents.

South Australia began collecting its POCT last July, while Western Australia’s new tax is set to take effect on January 1, 2019. Australia’s federal government is also mulling imposing a national POCT in order to harmonize the country’s online taxation system.

Betfair Australasia, which is owned by casino operator Crown Resorts and licensed in the Northern Territory, warned the states that the tax hikes would force it to hike its own commission fees, which will cause “leakage” of its customers to internationally licensed online gambling sites that aren’t subject to the states’ tax grab.