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Australia's economy is set to become two-and-a-half times bigger over the next 40 years, but will remain sluggish compared to previous decades.

The 2023 Intergenerational Report to be released on Thursday will reveal economic growth into the 2060s will slow largely due to an ageing society and stalled population growth.

But a strong labour market will help prop up the economy.

GDP is projected to grow at an average of 2.2 per cent a year from 2022/23 to 2062/63, which is 0.9 percentage points lower than the average growth of the past 40 years.

Treasurer Jim Chalmers said Australia was one of the best-placed nations to respond to the economic headwinds ahead due to its low unemployment and near-record labour force participation.

"To lay the foundations for future growth, we're investing in a more adaptable workforce and working to maximise opportunities in the digital economy, net zero transformation and growth in the care economy," Dr Chalmers said.

He said the slower growth was in line with other advanced economies.

Tax and non-tax receipts are set to rise to 26.3 per cent of GDP in 2033/34 before peeling back slightly in the three following decades.

Structural changes to the economy will put pressure on tax revenue, with proceeds from fuel and tobacco excises to shrink as Australia transitions away from fossil fuels and fewer people smoke.

Company tax and the GST will largely stay in line with economic growth while the percentage of revenue from personal taxes will increase as incomes rise and the population grows.

Dr Chalmers has ruled out any changes to the GST, but is eyeing off tax reform in the areas of multinationals, high-balance superannuation and offshore petroleum production.

© AAP 2023

Websites selling home fertility tests are making misleading claims about their usefulness and could influence plans to conceive, researchers warn.

The 'egg timer' tests measure the level of anti-Mullerian hormone in the blood, a hormone produced by follicles in the ovaries.

Of the 27 websites selling the tests directly to consumers online, 20 stated it could provide information about fertility or the likelihood of conceiving, University of Sydney researchers found.

The majority contained poor quality information or made unsupported claims, including marketing the test as a reliable predictor of fertility, according to a study published in JAMA Network Open on Tuesday.

Researchers cautioned women may rely on website information to decide whether to have the test.

They may also make decisions or plans to conceive or delay doing so, or seek potentially unnecessary fertility treatments such as IVF or egg freezing on the basis of test results.

Evidence shows the AMH test cannot reliably predict current or future fertility in the general population.

Researchers called for more regulation and oversight on the marketing of home fertility tests.

Currently direct to consumer AMH test marketing has minimal regulation.

Co-author Rachel Thompson from the Sydney School of Health Sciences Faculty of Medicine and Health said false and misleading claims about the usefulness of the AMH test undermine women's ability to make an informed decision.

"People may also be worried or reassured by the test results without basis and may change their reproductive plans and behaviour as a result."

The researchers said increasing public knowledge about fertility, greater attention to reproductive health and addressing structural barriers to earlier childbearing are likely to be more effective in helping people to achieve their reproductive aspirations.

© AAP 2023

Damien Hardwick is not the Messiah, but he feels like a very happy boy on Christmas Day.

The new Gold Coast coach is bullish about orchestrating a fourth AFL premiership, saying the Suns have 80 per cent of the players they need to challenge for their maiden flag.

Hardwick and the Suns hierarchy kept the door ajar when inevitably asked if one of those players might be Richmond star Dustin Martin.

While he noted the Brownlow Medallist remained contracted to the Tigers, Hardwick, club chairman Bob East and chief executive Mark Evans all deferred to the Suns list management team.

As widely anticipated, the three-time Richmond premiership coach will take over at the Suns, and has signed a six-year deal.

It is three months since Hardwick abruptly left the Tigers in mid-season, saying he had done all he could at the club, and six weeks from when the Suns sacked coach Stuart Dew.

Gold Coast are yet to make the finals after 13 years in the AFL, but Hardwick oozed confidence at Monday's media conference.

"I'm very, very, very excited - I liken it to waking up on Christmas Day, walking into a brand new set of toys," he said.

"Eighty per cent of our first premiership side is sitting in this room right now.

"This side and this club are very capable of saluting in the not-too-distant future."

But Hardwick and East stressed that would take the efforts of the whole club, saying one man did not make a flag.

"I'm not the Messiah. I'm part of the puzzle that's going to take us where we need to go," Hardwick said.

The 51-year-old will take over from interim coach Steven King after the Suns' season ends next weekend.

King and much of the existing Gold Coast football department will stay put, with Hardwick saying he felt no need to make changes.

The Suns' new coach forecast an attacking style similar to what has taken Collingwood to the top in 2023.

"You have to tailor a game plan to what you have here, and a lot of the tools I'm looking for are in this building right now," he said.

"We'll bring a style of game that will be relatively similar to what you see Collingwood, GWS and Richmond play.

"At this stage, I'm thinking I have all the people I need in the building and I don't really need to bring anyone else."

But inevitably, Hardwick, East and Evans were asked about their potential interest in Martin.

"He's a contracted player at Richmond," Hardwick said. "List management decisions will come in due course."

Hardwick said he had not spoken to Dew. The pair were 2004 premiership teammates at Port Adelaide and worked together at Hawthorn.

"It's very cut-throat, that's the reality of the situation," Hardwick said.

"My time will come ... this is the nature of the business we're in.

"No apologies for that, you have to succeed."

East said the club was delighted to secure Hardwick, who had coached the Tigers from 2009.

At the start of August, East and Evans flew to Milan, where Hardwick was holidaying, to complete the hiring process.

Asked when they had convinced him to join the Suns, Hardwick said "probably after entree".

© AAP 2023