There are around 20,000 registered child sex offenders in Australia who have served their sentences but are still under supervision and subject to reporting obligations. Almost 800 traveled overseas in 2016, with more than one third doing so without permission, the statement said.
The new laws, she said, would prevent convicted Australian pedophiles taking part in the "growing child sex tourism trade."
"This is the strongest crackdown on child sex tourism ever. No country has ever taken such decisive and strong action to stop its citizens from going overseas, often to vulnerable countries, to abuse kids," said Justice Minister Michael Keenan.
"We know that we'll be denying passports to around 20,000 people who currently have reporting obligations ... and about 2,500 will be added every year and we will continue to deny them passports whilst they have those reporting obligations."
"In an increasingly interconnected world, more people are on the move and even the most remote parts of the planet are now within reach, thanks to cheaper travel and the spread of the internet. As a result, the risks of child sexual exploitation are increasing," the report said.