In NSW alone there’s $220m worth of "lost money" that’s waiting to be claimed.
If you've changed your name, address or job, there's a chance you could be the owner of some of it.
A simple online search is returning thousands of dollars back to the right pockets.
More than half a million people are estimated to have a claim on the nearly quarter of a billion dollar kitty, Australia wide.
State Finance Minister Dominic Perrottet said one in every 14 people in NSW had lost money sitting in the state account.
He said many were oblivious to the fact they could be sitting on a windfall.
Andrew Lee just claimed $4,000 he discovered he was owed.
"It was a good Christmas present, with a family and kids you've always got money going out the door. It was a welcome surprise,” he said.
By logging on to the office of state revenue's website, a simple name search can reveal how much anyone is owed.
Andrew found out about his cash when someone contacted him offering to collect his money for a cut.
"Someone identified that I might have some money sitting in the office of state revenue,” Mr Lee said.
The cash is from unclaimed share dividends, bill refunds, deceased estates, trust funds and old bank accounts where the owner can't be tracked down.
The office of state revenue has 530,000 separate cash deposits awaiting collection.
Last year, $17.5m was claimed from 9,000 cases.
News break - January 12
One of the cases waiting to be cashed is worth more than one million dollars from a deceased estate.
“We want to make it easy for people to get their hands on their money, it's not the government’s money it's your money,” Mr Perrottet said.
The government insists it's safe, with strict identification tests for all claims.
To see if you're missing out on unclaimed cash visit the NSW Office of State Revenue.