"What is it that you refer to? Because no one seems to know."Albanese said Australia had the petroleum resources rent tax (PRRT) — the mechanism for taxing profits earned on fuel extraction."People speak as if there isn't one is supply of fuel into our economy."Income from the petroleum resource rent tax has been revised down by $100 million to $1.4 billion for the current financial year, compared to forecasts in December's mid-year budget update.This is despite oil and LNG prices surging since the start of the Middle East conflict.PRRT revenue is expected to climb to $1.9 billion in 2026-27, primarily due to the higher oil price, before falling each subsequent year until it hits $1.25 billion in 2029-30 as the oil price stabilises.By contrast, the beer excise is forecast to bring in $3.1 billion in 2029-30.A social media post by independent senator David Pocock highlighting the disparity between the two revenue streams led to a groundswell of support ahead of the budget for changes to the way gas exports are taxed.Despite a Senate inquiry finding the PRRT was ineffective, Labor decided not to touch the tax, citing concerns that it could anger key fuel suppliers who rely on Australian gas.Treasurer Jim Chalmers has also pointed to changes made during Labor's previous term of government that were designed to make gas companies pay the tax earlier in the life of projects.— With additional reporting by the Australian Associated Press.For the latest from SBS News, download our app and subscribe to our newsletter.