25 September 2025

Fixing the GST would pay for light rail to Woden, says think tank

| By Chris Johnson
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Matt Grudnoff Australia Institute

Economist Matt Grudnoff from the Australia Institute says new analysis shows the ACT Government is being massively shortchanged by a broken GST. Photo: Supplied

If the GST were working like it should, there would be no concerns over the cost of building the light rail link to Woden, says new research from progressive think tank the Australia Institute.

The institute’s analysis claims the ACT Government will be shortchanged by almost $2.5 billion in GST revenue over the next four years because the tax regime isn’t delivering on its promise.

When it was introduced 25 years ago, the GST was hailed as the tax that would fund state services, such as health, education, roads, and policing, for generations to come.

However, the think tank’s research indicates a shrinking share of goods and services subject to GST, which it attributes to a phenomenon accelerated by the cost-of-living crisis.

Its analysis suggests that if GST revenue continues to fall short of expectations, the ACT will be $2.44 billion worse off over the forward estimates.

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Australia Institute senior economist Matt Grudnoff said state and territory budgets are being starved.

“If the GST worked properly, it would pay for the light rail to Woden in three years,” he said.

“Australians are being squeezed so heavily for things like mortgages and rents, which are not subject to GST, they have very little left over to spend on things that are subject to GST.

“The end result is that GST revenue is falling further and further behind expectations.

“This is money that would and should go to hospitals, schools, roads, police and other essential state services.”

The report says the cost of slow GST growth to state and territory governments has been $231 billion over the 23 years from the introduction of the GST in 2000-01 to 2023-24.

This includes $22 billion in lost revenue in 2023-24 alone.

The discussion paper suggests that there is no reason to believe that GST revenue will begin to grow faster in the coming years.

“There is nothing to suggest that the factors driving inequality, and the related shift in household spending, are going to change in the short to medium term,” it states.

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The report outlines the institute’s assessment of the factors contributing to the decline in GST revenue as a proportion of GDP.

These factors include the steady reduction in the share of national income flowing to workers; a rapid rise in spending on housing, including payments on rents and mortgages; the decision to exclude private school fees and private health insurance from the GST; and high-income earners having a greater ability to travel overseas and buy items GST-free.

“The entire tax system needs reform, including the GST,” Mr Grudnoff said.

“Applying GST to things like private health insurance and private school fees would be a good start.

“There are plenty of things we can do to fix this. We just need brave governments and meaningful reform.

“In the meantime, states and territories are being forced to cut spending and borrow more, while schools, hospitals and public transport infrastructure crumble.”

Recent analysis from the Australian National University has also shown the GST to be “highly regressive” and inequitable.

But Federal Treasurer Jim Chalmers isn’t in a rush to tamper with the GST.

“It’s not something that we’ve been attracted to,” he said in a recent interview.

“I think in addition to the concerns that we have repeated on a number of occasions now about the distributional impact on different people, we’ve also got to remember that every cent of the GST goes to the states.

“Often when people propose to us changes to the base or the rate of the GST, they spend that additional revenue many times over.

“Whether it’s compensation, whether it’s money for the states buying state tax reform, and that’s not irrelevant to us either … The Prime Minister and I have had a view about this, and that view hasn’t changed.”

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Clever Interrobang7:54 am 29 Sep 25

It wouldn’t pay for the light rail because the ACT government has been running deficits for many years now. All it would do is either reduce the size of the deficit, embolden the government to spend more in other neglected areas, or it would lead to calls for the government to cut other taxes.

The lightrail was always a massive mistake.
The city planners never considered the monorail system, that could have avoided ripping up massive in-ground infrastructure, they are designed to overt road traffic and can built over lakes and roads.
The cost to 450,000 Canberran tax payers would make so much more feasible for them. Ex Liberal leader Alistair Coe had told the Labor government relentlessly not to go ahead with lightrail, now Canberra tax payers are suffering the high cost of living.

Lol a monorail. Whining about light rail but proposing a monorail instead….. right

A monorail would be more visually disruptive, particularly around the Parliamentary Triangle, yet it would not interrupt vehicular traffic and the infrastructure would probably be less of a cost. It would probably have a greater productivity return than the current light rail build.

Capital Retro4:20 pm 25 Sep 25

Richard Denniss from same TAI was banging on about same thing a while ago:

https://region.com.au/tax-private-school-fees-healthcare-insurance-to-get-gst-back-on-track-argues-think-tank/884402/

The ACT needs a mine or two to raise revenue.

There’s a lot of untapped gas in London Circuit which could be fracked.

I think you’ll actually find TAI on Canberra Avenue 😉

It’s on the other side. Their sign is a beauty, it declares “we change minds”.

Would love Essential to run a fact check around that claim 🤣

Deborah Johns3:44 pm 25 Sep 25

The solution is to follow the Micawber Principle – as relevant today as it was in Dickens’ time:
“Annual income twenty pounds, annual expenditure nineteen pounds nineteen and six, result happiness. Annual income twenty pounds, annual expenditure twenty pounds ought and six, result misery”.
And get rid of negative gearing too.

There would be very few houses in the rental market if you remove negative gearing. More homeless would be the result!

Has TAI worked out that the largest concession in the national budget is the Tax Free Threshold ?

Capital Retro4:15 pm 25 Sep 25

Excellent comment Penfold.

What a wonderful piece of socialist thinking, to extend GST to private health insurance and private school fees. Punish those people who are having a go and saving the government money in both areas.

Don’t you mean: making the people who can afford private schools and private healthcare pay the same tax as anyone else does on all goods and services?

There is little, if any rationale for either of those being excluded from the system. They aren’t essentials of life in any form or resemblance.

And please do prove how either system saves the taxpayer money. It is an often made claim, but also does not really stack up when the empirical evidence is considered.

Capital Retro10:03 am 25 Sep 25

Imagine the outcry if GST was added to mortgage payments.

It’s very simplistic to suggest that “fixing” the GST could fund Light Rail.

The issue, of course, is that “fixing” the GST is really about increasing the level of taxation collected from Australians.

If these “think tanks” were being transparent, they’d equate the additional funds raised by “fixing” the GST to the increase in personal taxation required, to raise the same levels of taxation.

Ultimately, “fixing” the GST, is just another tax hike.

Has the Australia Institute ever identified a spending problem? Imagine what the ACT could afford without this CFMEU-bolstering light rail.

I don’t know why anyone quotes TAI.

The root cause it cost of living caused by government spending. The answer is not to tax the people more.

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