A Sydney woman is more than $100 million richer after becoming the only winner of last night's Powerball jackpot — but she has no plans to give up her day job.

Key points: The healthcare worker's win broke the national record for the largest sum won by an individual

The healthcare worker's win broke the national record for the largest sum won by an individual The woman won more than $107 million thanks a surge in entries

The woman won more than $107 million thanks a surge in entries The winner says she will not retire, but rather work for causes close to her heart

The win broke lottery records, with the unidentified woman taking home the biggest individual prize ever won in Australian history.

A surge in entries purchased for the draw boosted her winnings to $107,575,649.08.

The woman, a mother in her 40s, originally thought she had won $107,000, according to a statement from Australian lottery provider The Lott, which runs the Powerball jackpot.

"I don't understand — is this actually real?" she said upon learning of her win.

"Is this a trick?"

The woman who works in healthcare said she "won't be retiring".

"I'm so passionate about my job," she said.

"It will drive me to do more health work for causes important to me."

She told The Lott she planned to give her family a "whole slab of money", as well as travel and donate some of her winnings to charity.

"I'm not sure how I will be able to sleep tonight, but for now I'm going to go have a cheap glass of chardonnay," she said.

The woman had the only entry matching all seven winning numbers and the Powerball — the incredibly rare combination required to take out the division one jackpot.

The odds of winning the division one prize with a 12-game entry are 11.2 million to one.

Those odds shrink to 134.5 million to one with a single-entry ticket.

The previous record for the largest sum of money won by a single entry in an Australian lottery draw was $70 million, with the ticket purchased by a couple on Queensland's Fraser Coast in December.

That same figure was won in 2013 by a group of Gold Coast women, who bought their ticket after one of their regular lunches.