Higher levies for tech companies who don't strike deals with Australian media organisations for news content will not violate free-trade deals with the United States, the assistant treasurer says. Daniel Mulino says the government has shown good faith with the social and media companies. The revenue used to calculate the tech giants' payments will be limited to digital advertising income attributable to the Australian market. Australia has had a free-trade deal with the US since 2005, but US trade officials have taken aim at federal government measures against tech companies. Social media companies are being urged to pay up for media content.