What Australia taxes, and what it does not
The prize is a windfall. The yield is income.
The ATO does not treat an ordinary lottery prize as assessable income. It is a windfall gain, the same category as a gift or an inheritance, so there is no withholding, no declaration on your return, and no tax on the prize whether it is $10 or $200 million. Winners in the United States lose a quarter to federal withholding before they see a cent. Australians do not.
That protection stops at the bank door. Once the money is sitting somewhere earning something, that something is ordinary income:
- Interest from a savings account or term deposit is fully taxable at your marginal rate, in the year it is credited.
- Dividends from shares or an index fund are taxable, though franking credits attached to them soften the blow considerably.
- Rent from a property you buy is taxable, less the deductions that come with owning it.
- Capital gains arrive only when you sell. Hold an asset more than twelve months and the 50% capital gains discount means only half the gain is added to your income.
- Gifts to family are not taxed. Australia has no gift or inheritance tax, so handing your sister $200,000 creates no tax event for either of you. What it can affect is a Centrelink payment, since gifting rules cap the amounts that get disregarded.
The uncomfortable arithmetic is that a single person with no other income and a $40 million prize in a savings account crosses into the top bracket within the first three weeks of the financial year. Everything after that is taxed at 45% plus levies.
Three things that catch winners out
The Medicare levy surcharge. If your income for surcharge purposes tops $105,000 as a single, or $210,000 as a family, and you did not hold private hospital cover for the whole year, the surcharge applies to your entire income, not just the part above the threshold. At the top tier that is 1.5%. On $2 million of interest, that is $30,000 for a policy you never bought. It is one of the rare tax lines you can lawfully reduce to zero by buying something cheaper than the tax.
Quarterly instalments. Interest and dividends arrive with no tax taken out, so your first tax bill lands as one enormous lump. After that first return, the ATO enters individuals into the PAYG instalment system automatically once instalment income reaches $4,000, tax payable on the last assessment reaches $1,000, and estimated tax for the year reaches $500. From then on you prepay quarterly. It is not extra tax, just the same tax earlier, but the cash flow surprises people who assumed tax time was once a year.
Centrelink. A prize is assessed as an asset, and the income it earns is assessed as income. Deeming rules apply to financial assets regardless of what they actually earn. Any significant change in your circumstances has to be reported within 14 days, and a large win will end most income tested payments, including JobSeeker, Age Pension, Family Tax Benefit and rent assistance.
How franking credits change the tax on dividend income
Franking is the genuinely unusual feature of the Australian system. A company that pays tax at 30% on its profits and then distributes those profits attaches a credit for the tax already paid. You declare the cash dividend plus the credit as income, then subtract the credit from your tax bill. Because it is a refundable offset, someone with little other income can end up receiving cash back from the ATO on dividend income, which never happens with bank interest.
For a top bracket taxpayer, franking narrows the gap rather than closing it: the credit covers 30 points of a 47% liability. For a winner with no other income living off a modest dividend stream, franking can wipe out the tax entirely. Switch the calculator between a savings account and an ASX index fund at the same headline percentage and the difference shows up immediately.
None of which makes shares safer than a bank. Deposits up to $250,000 per person per institution are covered by the government guarantee. Share prices fall. The calculator above models income, not risk, and the two are not the same question.
This is general information, not advice
We are not accountants, tax agents or financial advisers, and nothing here is personal advice or a recommendation to put money anywhere. It is an arithmetic tool built on published ATO rates, and it can be wrong about your situation for reasons it has no way of knowing.
Anyone actually holding a life changing amount of money should pay a registered tax agent and a licensed adviser before doing anything with it. That fee will be the cheapest part of the whole exercise. Tax rates and thresholds also change, so check the current figures on ato.gov.au before relying on any number above.
If you would like the wider picture first, our guide to how lottery tax works country by country covers why Australia is unusually generous, and lump sum versus annuity explains a choice Australian winners never have to make. If thinking about any of this has stopped being fun, Gambling Help Online is free, confidential and open 24/7 on 1800 858 858.