Uber drivers and Airbnb hosts who avoid paying tax are in the federal government's sights as work begins on a new income reporting regime.

Treasury will on Wednesday release an industry discussion paper on plans for a mandatory regime to ensure sharing economy participants pay their fair share of tax.

Major industry players include Uber, Airbnb, Airtasker and delivery services such as Deliveroo and Uber Eats.

But the reforms target people who work in the sector rather than the platforms themselves, many of which have overseas domiciles.

Assistant Minister for Treasury Zed Seselja says the sharing economy has seen significant growth in Australia.

"But as it grows, there is a risk that some individuals are not reporting their full income and avoiding the right amount of tax," Senator Seselja said in a statement.

"We are committed to making sure people pay their fair share of tax."

The consultation paper is available on the Treasury website and submissions close on February 22.