Australian Prime Minister Albanese has announced that the National Cabinet meeting today adopted a National Fuel Security Plan.Among the measures:Government will halve the fuel excise on petrol and diesel for three monthsWill reduce the heavy vehicle road user charge to zero for three monthsI am probably going to be the most hated person in Australia for pointing this out, but here goes:A reduction in taxes on a good will, all else equal, tend to increase demand for that good by lowering the price consumers pay. Taxes effectively act as a wedge between what producers receive and what consumers pay. When that wedge is reduced, the final price typically falls, encouraging higher consumption.In economic terms, this results in a movement along the demand curve rather than a shift of the curve itself. As prices decline, consumers are willing and able to purchase more of the good, leading to an increase in quantity demanded. The magnitude of this response depends on price elasticity. Goods with elastic demand, where consumers are sensitive to price changes, tend to see a larger increase in consumption, while inelastic goods experience a more muted response.However, the real-world impact can vary. Producers may absorb part of the tax cut, limiting how much prices fall. Supply constraints can also cap how much consumption increases, even if prices decline. Additionally, if the tax cut is seen as temporary, consumers may not significantly change their behaviour.A common example is fuel: cutting fuel taxes reduces pump prices, which can lead to increased driving and higher fuel consumption, reinforcing the link between tax policy and demand. Some are going to argue that demand for petrol/diesel is inelastic and this is somewhat true. For people having to drive for work etc. sure, but for those heading out for a weekend trip, no. ---Cutting the heavy vehicle toll is more defensible, moving goods requires trucks and offsetting the high fuel price this way makes more sense. ps. An Australian National Cabinet meeting is a forum where the Prime Minister and state and territory leaders (premiers and chief ministers) come together to coordinate policy and decision-making on issues that affect the whole country. It replaced the former Council of Australian Governments (COAG) in 2020 to allow for faster, more flexible collaboration—initially during the COVID-19 pandemic. While it is not a legislative body and cannot make binding laws on its own, it plays a key role in aligning federal and state responses on areas such as health, the economy, energy, and infrastructure, helping ensure a more unified national approach. This article was written by Eamonn Sheridan at investinglive.com.