14 November 2026
For most people who have a flutter, the tax position is simple: Inland Revenue lists "winnings from gambling or a New Zealand lottery" under other income that you generally do not need to tell IRD about. That covers the typical player who wins a few hundred dollars on a Saturday night or lands a modest prize from a ticket. The picture changes only when the winnings are tied to a taxable activity, such as earning a living from sport. Here is how the rules fit together, and where the lines fall.
Ordinary gambling winnings are usually not taxed
Inland Revenue's guidance on other income names gambling and New Zealand lottery winnings among the types of income you generally do not have to declare. In practical terms, if you are a casual player and you win, there is normally no line on your tax return for it and no tax bill waiting at the end of the year. The word "generally" matters, though, and the exceptions are covered further down.
IRD's separate guidance on taxing prize money is just as clear about the everyday cases. Prize money from a raffle, Lotto or a draw is generally not taxable. The same goes for prize money from a dog, horse or trotting race through the TAB, which IRD says is not taxable. A person who wins the meat-tray raffle at the local club, picks up a Lotto prize or collects on a race bet is, in the ordinary course of things, not creating a tax obligation.
The reasoning behind this is worth understanding because it shows where the boundary sits. These rules treat winnings as the outcome of chance or recreation, not as pay for work or as the proceeds of a business. That is why the guidance keeps coming back to whether the money was won "as part of a taxable activity". If it was not, the starting position is that you keep what you win and say nothing to IRD.
There is one mistake casual players make, and it runs in the opposite direction to what many expect. Some people assume that every win, however small, has to be tracked and declared, and they worry about paperwork that IRD does not ask for. For ordinary recreational gambling, IRD's own wording says you generally do not need to tell it. Keeping your own records of deposits and wins can still be sensible for budgeting, but that is a personal-finance habit, not a tax requirement.
When prize money becomes taxable income
The exception is where the money comes from a taxable activity. IRD says that if prize money is won as part of someone's taxable activity, it is generally taxable. It must be included in the person's tax return, either as business income or as a schedular payment. The test is not how much was won or how unlikely the win was. It is the connection between the prize and what the person does for income.
Think about the difference between two people who each win $2,000 in a competition. One enters a fun draw as a hobby with no link to their work or business. The other is a self-employed competitor who enters events as part of earning a living. Under IRD's approach the first person's prize is generally outside tax, while the second person's prize is generally income that must go on the return. The dollar amount is identical; the context is not.
IRD's rules for event organisers show how this works in practice. If you run a sports event or competition and give more than $500 in prize money to a participant, you must deduct 20% withholding tax from the amount over $500. That applies when the participant performs or competes as part of a taxable activity. As an illustration of the arithmetic, a prize of $800 to a participant competing as part of a taxable activity would see the $300 above the $500 threshold subject to 20% withholding, which comes to $60.
Two consequences follow. First, the person receiving the prize still has to deal with it on their return, either as business income or as a schedular payment, so withholding does not make the question go away. Second, organisers carry a duty here, not only winners. Anyone running a competition with sizeable prizes needs to know whether the people they pay are competing as part of a taxable activity, because that determines whether the withholding rule bites.
For a casual player the practical test is a straightforward one. Ask whether the winnings are connected to something you do for income. If the honest answer is no, the usual position is that the money is not taxable. If the answer is yes, or even possibly, it is worth checking IRD's guidance or speaking to an accountant before you file.
Offshore online gambling and the operator tax
Many New Zealanders play at overseas-based websites, and it is natural to wonder whether tax follows that money. The relevant rules in this area target the operators, not the players. IRD says online gambling duty applies to offshore gambling operators that supply gambling to New Zealand residents. The rate is 12% of offshore gambling profits arising on or after 1 July 2024, as set out on IRD's online gambling duty page.
The Gaming Duties Act 1971 supplies the definitions. It defines offshore gambling as gambling or a prize competition that a New Zealand resident pays to participate in through remote services physically performed outside New Zealand. So the test turns on two things: the participant is a New Zealand resident who pays to take part, and the remote service is physically performed outside the country. A site run from overseas that takes bets or entries from residents falls within that wording.
The Act also sets out how offshore gambling profits are worked out. The figure is the amounts received from residents, minus the prizes paid to residents, minus offshore betting amounts. That makes the duty a tax on what the operator keeps after paying out winners, not on the total turnover and not on any individual player's winnings. A player who wins is not the one calculating or paying this duty.
It would be a mistake to read the duty as changing the personal position described earlier. The duty sits on the operator's profits, while the question of whether a player's winnings are income is governed by the other-income guidance and the prize-money rules. A player's winnings from gambling are still generally not something to tell IRD about, unless they arise from a taxable activity. Nor does the existence of the duty say anything about whether a particular site is safe or well run; it is a revenue measure, and it is a separate matter from player protection.
Amateur and professional sports prizes
Sport is where the line between hobby and taxable activity gets blurry, and IRD has addressed it directly. Its guidance on amateur and professional sportspeople says that prize money from sports events and competitions may be taxable even if a code lets the winner compete as an amateur. In other words, the label a sporting body gives you does not decide the tax outcome. What counts is whether the prize is received as part of a taxable activity.
This matters to readers who bet on sport and also to those who compete. A club-level player who occasionally wins a small prize is in a different position from someone who enters events regularly with the aim of earning from them. If your sport is turning into a source of income, do not rely on the amateur tag to assume the prize is outside tax. The rules for race betting winnings and general prizes are separate from the rules for what a competitor receives as prize money.
The main points from IRD's prize-money and sports guidance are easy to scan, so here they are in one place.
- Prize money from a raffle, Lotto or a draw is generally not taxable.
- Prize money from a dog, horse or trotting race through the TAB is not taxable.
- Prize money won as part of a taxable activity is generally taxable and goes on the return as business income or as a schedular payment.
- An organiser giving a participant more than $500 in prize money must deduct 20% withholding tax from the amount over $500 when the participant competes as part of a taxable activity.
- Sports prize money may be taxable even if the code lets the winner compete as an amateur.
Note the pairing in that list. The TAB race rule and the sports prize rule can look like they conflict, but they cover different things: money paid out on a race bet through the TAB versus prize money a participant earns by performing or competing. Keeping that distinction in view avoids most of the confusion.
What casual players in New Zealand should take away
If you gamble for fun, whether that means buying Lotto tickets, entering a draw, backing a horse through the TAB or playing online, the general position is that your winnings are not taxable and you do not need to tell IRD about them. IRD's wording on this is plain, and it holds for the great majority of recreational players. You do not need to set aside a share of a win for the taxman, and a one-off prize does not usually change your tax return.
The caution is about context. If prize money is won as part of a taxable activity, it generally becomes taxable income, reported as business income or as a schedular payment. Anyone who earns from sport or competitions should treat the amateur or professional label as beside the point and look at whether the activity is producing income. Organisers handing out more than $500 to a participant competing as part of a taxable activity must withhold 20% of the amount over $500.
For online players, the 12% duty on offshore gambling profits since 1 July 2024 falls on the operators, who are taxed on what they receive from New Zealand residents less the prizes they pay out. It does not turn your winnings into a reportable item. If your situation sits in a grey area, such as regular competition entries that look like a sideline, check IRD's guidance on prize money and sportspeople before you file, or ask an accountant to look at the specifics. For everyone else, the sensible habit is to treat winnings as a bonus rather than income, and to keep to a budget you can afford to lose.