NSW will receive a few days of relief from the intense rain that has blanketed the state but floodwaters are rising.

People across the state were forced to flee their homes over the weekend as floodwaters rose, with thousands of others poised to leave if ordered.

Prime Minister Anthony Albanese urged people to follow the advice from emergency services.

"This is not a time for people to take risks," he said on Sunday.

The State Emergency Service performed 28 rescues in the 24 hours up to Sunday afternoon, 21 of those during the night and the majority for people who had attempted to drive through floodwaters.

Evacuation orders had been issued for areas along the Lachlan and Hawkesbury rivers, with more than 100 warnings issued across NSW as of Sunday night.

Emergency Services Minister Steph Cooke told people to be cautious, with clearer weather forecast for the start of the week.

"Don't be deceived. The sun might be out in various parts of the state ... but our rivers continue to rise," Ms Cooke said.

Even as the skies cleared on Sunday, residents were being told to evacuate or prepare to leave flooded areas.

Ms Cooke said said rural, remote and regional areas will be "on edge" as they wait for the next big weather system to hit from Wednesday.

Meanwhile in Victoria, heavy rain drowned out a wine and music festival over the weekend as authorities issued major flood warnings.

By Sunday night, a handful of these had been reduced as the worst of the weather subsided.

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Prime Minister Anthony Albanese says the federal government is not planning on amending or scrapping scheduled tax cuts.

But the opposition is calling on the prime minister to expressly rule out any future changes.

Mr Albanese told reporters on Sunday: "Our position hasn't changed - I've said that repeatedly".

"These (tax cuts) are due to come in in 2024, we are producing a budget in October 2022."

He added that the government would continue to work alongside the Reserve Bank's policy to curb inflation rather than in contradiction to it.

He said the government would produce a sensible budget that wouldn't add to inflationary pressure, as central banks around the world hike interest rates at unprecedented speed.

"At that time fiscal policy should work in concert with (monetary policy) not against it," Mr Albanese said.

"That's the context in which we are framing a budget."

Shadow Treasurer Angus Taylor welcomed assurances from federal government ministers that the tax cuts would remain but wants Labor to be more explicit.

"We need to see Anthony Albanese ruling out dropping the tax cuts," he told Sky News.

Opposition Leader Peter Dutton said the prime minister had left the door open to considering changes in the future.

"It seems he is still contemplating it between now and the next election," he told the ABC's Insiders program.

Government ministers have consistently run the line that there have been no changes to the policy, but haven't ruled out having discussions about changing the cuts.

"That would be an unforgivable and a ridiculous mistake," Mr Dutton said.

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Shane van Gisbergen said a second win at Bathurst was taking time to sink in after he roared home to seal a repeat of his 2020 triumph with Garth Tander to give Holden victory in its final race around Mount Panorama.

After six hours and 43 minutes of thrilling and chaotic action in Australia's great race, van Gisbergen passed the chequered flag to an explosion of fireworks just one second ahead of second-placed Chaz Mostert.

The reigning Supercars champion beat a desperate chasing field in what transformed into a 39 lap sprint, then a 16 lap gallop home after Todd Hazelwood and Will Davison forced two late safety cars after six had come earlier in the 1000 kilometre classic.

"It's a privilege to add to the tally of Holden wins," van Gisbergen said.

"It's hard to put into words but it's pretty cool."

SVG had previously enjoyed a 12.3 second margin aided by teammate Tander before Hazelwood's incident triggered Sunday's seventh safety car, then Davison went into the wall two corners after his final pit stop.

The New Zealander heroically defended his slim margin ahead of 2021 winner Mostert, who hounded him to the final corner, crossing for his his 73rd career victory and Tander's fifth at Bathurst.

The win was record setting for van Gisbergen and cements the most dominant season ever in Australian Touring Cars and Supercars history.

He now has the most wins in a season with 19, eclipsing the previous record of 18 by Scott McLaughlin.

The next highest win by any driver in 2022's competition is three, shared by Mostert, Waters and Davison.

Triple Eight Racing's terminator has won almost two thirds of races this year and 10 of the last 12 since the July NTI Townsville 500.

He has room to extend his record with legs at the Gold Coast and Adelaide to come.

But even having had a 525 point lead before the race, van Gisbergen will need to wait till the next round to wrap up the championship as Waters' podium finish means he's still mathematically in the hunt for the season title.

Sunday's win also marks the ninth Bathurst title for Triple Eight Racing.

After van Ginsbergen secured a podium place in the recent New Zealand World Rally Class Two Championship last week, he went straight into preparation for another crack at the mountain.

When asked of any signs of fatigue, the 33-year-old was coy.

"Tomorrow morning I'm going to be feeling worse," he joked.

"But right from Thursday I felt on it in the car. Driving so much it just keeps you sharper.

"Yes there is some risk - especially with the rally stuff - but I think it makes me a lot better."

Mostert finished second and pole-sitter Waters third, as Holden capped a dream farewell on the mountain with two of three cars on the podium.

Davison's late crash meant his teammate and brother Alex's record of finishing every start at Bathurst came to an end.

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NSW is expecting a few days of relief from the heavy downpours that have smashed the state but floodwaters will continue to rise.

Prime Minister Anthony Albanese urged people to listen to authorities and follow the advice.

"This is not a time for people to take risks," he said on Sunday.

"My heart goes out to those people who have suffered time and time again, particularly during the recent period."

Sunshine was forecast for the start of the week but NSW was expecting another big system to hit on Wednesday.

The reprieve comes after a weekend of wild weather that has left rural and regional areas "on edge" while sparing Sydney from the worst impacts.

Emergency services performed 28 flood rescues across NSW in the 24 hours up to Sunday afternoon, with 21 of them overnight.

Five emergency warnings have been issued across NSW, from Dubbo to the outskirts of Sydney.

The evacuation orders are among 100 warnings issued across NSW, including advice-level warnings and watch-and-act warnings.

Residents along the Hawkesbury and Lachlan rivers, as well as those in the Central Coast and the state's north, have been warned to prepare to leave.

State Emergency Service commissioner Carlene York urged people to be vigilant after a night of rescues, the majority being people who'd attempted to drive through floodwaters.

"It is very dangerous out there on our roads and we are seeing a lot of flash flooding and obviously the rivers are still rising," Ms York said on Sunday.

Emergency Services Minister Steph Cooke said Sydney had been "fortunate".

"Communities in rural, regional and remote NSW; they'll be on edge for the next few days while we wait for another big system to arrive," Ms Cooke said.

"We are in for a long spring and summer in relation to wet weather conditions."

Floodwaters are predicted to impact inland NSW for months.

The Bureau of Meteorology's Jane Golding said NSW could expect a series of weather fronts to pass through the state this season.

"We've seen totals far more than what we would normally see at this point in October," Ms Golding said.

As of Sunday evening, evacuation orders were active for the Oura Beach Camping Area outside Wagga Wagga, the Western Plains Tourist Park at Dubbo, the Riverside Ski Park in Cattai, and parts of Agnes Banks and Lower Portland.

Four evacuation centres have been set up, including three in and around Sydney and a fourth in Dubbo.

Major flooding is occurring and expected across the state, including in Gundagai from Sunday afternoon and several locations along the Lachlan River.

In the NSW's central west, the Bathurst 1000 was marred by a series of crashes with conditions hampered by the torrential rain the area had seen.

Meanwhile in Victoria, heavy rain drowned out a wine and music festival on Saturday, with major flood warnings for parts of the state even as rain eased.

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