Exxon's eight years without corporate tax

ExxonMobil won't pay corporate tax in Australia until 2021, meaning the global gas company won't have paid corporate tax for eight years.

The company's executives told a senate hearing on Wednesday a $21 billion investment program in Bass Strait and Western Australia means it won't pay the corporate rate from 2013 to 2021.

But Exxon did pay more than $300 million in the petroleum resource rent tax in 2017.