The general rule
In New Zealand, gambling winnings are generally not subject to income tax. The Inland Revenue Department (IRD) does not treat casino winnings, lottery prizes, or sports betting profits as taxable income for recreational players. This is because gambling is considered a recreational activity, not a business or profession.
When winnings may be taxable
Winnings may be taxable if gambling is your primary source of income or if you operate as a professional gambler. The IRD applies a facts-and-circumstances test. If you gamble systematically, use a proven strategy, and derive regular income from gambling, the IRD may treat your winnings as business income. This is rare for casino players but more relevant for professional poker players.
The IRD's position
The IRD's published guidance states that winnings from games of chance — including casino games, lotteries, and pokies — are not taxable for recreational players. The key distinction is between gambling as recreation (not taxable) and gambling as a business activity (potentially taxable). Most NZ casino players fall clearly into the recreational category.
GST and casino operators
While players do not pay tax on winnings, casino operators pay Goods and Services Tax (GST) on their gambling revenue. This is calculated on the net gambling revenue (total bets minus total payouts). The tax is built into the operator's cost structure and is not separately charged to players.
Seek professional advice
Tax law is complex and individual circumstances vary. If you have significant gambling winnings, operate as a professional gambler, or are uncertain about your tax position, seek advice from a qualified New Zealand tax professional or contact the IRD directly. This guide is for general information only and does not constitute tax advice.