NBA betting in New Zealand

Updated October 2026

Licensed

Available in US

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18+ Only

New Zealanders who want a dollar on a basketball game run into a sharp corner before they reach a price list. Since 28 June 2025 only one operator group, TAB NZ, may lawfully take sports and racing bets from people in New Zealand, under section 74AAA of the Racing Industry Act 2020. There is no licence register to choose from because there is only one lawful provider. That changes what “best NBA betting site” can mean here: the choice is not between ten brands, it is between the two apps that group runs and the offshore books that the law says cannot serve the bet.

Current as of 31 October 2026 · verified against the Department of Internal Affairs register and TAB NZ’s published terms

The rest of this guide works inside that frame. It covers the bet types the NBA actually offers, how the season shapes the calendar, what the ten-feature operator ranking looks like when nine of them have no New Zealand licence, and what a margin does to the prices a punter reads. The arithmetic belongs to the page; the facts come from the Department of Internal Affairs, TAB NZ’s own App Store listing, the Racing Industry Act 2020 and the Wikipedia entries on the league.

How to read an NBA price and the market behind it

Moneyline, spread and total — the three bets the book actually lists

An NBA game produces three prices that sit on every menu. The moneyline pays out for a straight win. The spread, called the line in New Zealand betting talk, hands one team a virtual head start so the favourite has to win by more than the number and the underdog can lose by less and still pay. The total, also called over/under, is the combined score both sides are asked to clear or stay under. Each one is priced in decimal form, where the number tells you what a winning $1 stake returns. $2.10 means a $10 bet returns $21, a $10 stake and $11 profit.

A moneyline on a heavy favourite can sit as low as $1.20 — small payout, supposed certainty. The other side, the underdog, can be $5.00 or longer. Spread markets compress the gap: the favourite might be $1.90 to cover -7.5 and the underdog $1.90 to stay within +7.5. That symmetry is not generosity, it is the margin dressed up as a fair price, and the section on margin below shows how it works.

Player props, same-game multis and futures

Beyond the three main markets, NBA menus carry player props (a bet on whether Jayson Tatum scores more or less than a stated number), period markets (quarters, halves), and futures on the championship, the conference winners, season wins totals and individual awards like MVP. Same-game multis let the punter stack several legs from the same game into one slip. Sportaza’s published terms, for example, define a Bet Builder whose leg price multiplies across the slip but voids the whole ticket if any single selection is voided. Same shape sits inside TAB NZ’s Same Game Multi product.

How second-half bets settle

A second-half bet, sometimes called a second-half line or 2H bet, settles on the score from the third and fourth quarters alone. The first-half score is wiped. That sounds clean until a game goes to overtime, in which case overtime does not count either: the bet is a 2H bet, not a 2H-plus-OT bet, and the overtime points sit outside it. A second-half bet on a tied game at halftime settles on whoever leads after the fourth quarter. A push, where the line lands exactly on the number, returns stake.

The same rule applies to quarter bets: a third-quarter bet settles on the third quarter alone, and overtime is not a third quarter. The slip on TAB NZ’s app and on most offshore menus will say explicitly whether overtime counts, and the punter is advised to read it before staking.

How a winning bet pays back

The return is stake multiplied by the decimal odds. A $50 bet at $2.40 returns $120, of which $50 is the stake back and $70 is the profit. A combination bet, sometimes called a multi or an accumulator, multiplies the leg prices of the powers together: two legs at $2.00 and $3.00 make a $6.00 multi. The catch is that every leg must win, and the bookmaker’s margin sits inside every leg, so the multi’s true probability of winning is lower than its price suggests. That is why a $6.00 multi pays more than a $6.00 single: the price reflects the higher risk, not a bonus from the book.

Reading the margin inside a price

The margin is the slice the bookmaker keeps of every dollar wagered, expressed as a percentage. The way to see it is to flip a market’s prices into implied probabilities and add them. Take a two-way market priced at $1.90 on each side: 1 ÷ 1.90 = 0.5263, or 52.63%, and adding the two sides gives 1.0526, or 105.26%. The 5.26 percentage points above 100 is the overround, which equals the margin. That is the slice the book keeps in expectation across both outcomes on a perfect book.

In practice margins on NBA main markets sit somewhere between 3% and 7% depending on the book and the timing of the price. A market with a 5% margin returns 95c in the dollar in expectation. A market with 7% returns 93c. That gap is what makes one menu cheaper than another for the same set of outcomes, and it is the difference between a book that looks generous and a book that quietly takes a bigger cut of every bet. The headline price never shows it. The implied probability does.

The NBA season and what the calendars actually mean

The NBA runs 30 teams, 29 in the United States and 1 north of the border in Canada. Each team plays 82 regular-season games between October and April, with the playoffs running through May and the Finals decided by mid-June. The 2026 Finals ran from 3 June to 13 June 2026, with the New York Knicks beating the San Antonio Spurs 4-1 in the series and closing out Game 5 with a 94-90 win on 13 June 2026, Jalen Brunson taking Finals MVP. That result is in the books.

The 2025 Finals went the other way: the Oklahoma City Thunder beat the Indiana Pacers in seven games. The Celtics hold the record for most NBA championships at 18, the kind of stat the futures market uses to anchor “who wins next year” prices for as long as the franchise stays in the conversation. The league’s origin sits in 1946 with the Basketball Association of America, and the NBA name dates to the merger on 3 August 1949.

For a punter, the calendar matters because liquidity, market depth and price tightness all move with the season. October’s opening night carries thinner menus than a February matchup between two contenders. The Finals attract the most action and the tightest spreads on the side markets: player props on the Finals MVP, series prices, and game-by-game lines all settle into sharper form as the series runs. Off-season betting, by contrast, leans primarily on futures, the draft and trades, which are markets of their own.

The ten-feature operator ranking, with the New Zealand frame on it

This is the comparison a New Zealand punter actually faces: two legal apps that share one operator group, and eight offshore books that the law says cannot serve the bet. The table lays them out by name, by their New Zealand status, and by what the operator’s own terms say about NBA coverage. The next sections cover each one in the order set by research, with a verdict on who each book suits.

The two columns do different jobs. The status column tells the punter which of these may lawfully take their bet from inside New Zealand. The coverage column tells them what the operator claims to offer, in the operator’s own words. They are not the same comparison, and a reader who treats them as one will end up punting with a book that cannot legally pay them out from inside New Zealand.

TAB

TAB is one of two online brands of TAB NZ, the operator group the Racing Industry Act 2020 names as the only lawful provider of racing and sports betting to people in New Zealand. The other brand is Betcha, and the two share the same wallet, the same betting rules and the same harm-minimisation tools. The TAB app covers horse and harness racing, rugby union and rugby league, and other sports including basketball; fixed-odds and live; racing form, Blackbook, Jockey Challenge and Trackside live race streaming; and a wallet for deposits and withdrawals. It carries a 17+ age rating on the New Zealand App Store and states customers must be 18 or over to bet.

What sets TAB apart is the legal frame it sits inside. Punters open a New Zealand account with verified address and ID, set deposit limits from inside the app, take a time-out or self-exclude, and have a route to the Department of Internal Affairs if a complaint cannot be resolved. The Problem Gambling Levy TAB pays funds harm-minimisation work, and the free Gambling Helpline at 0800 654 655 (text 8006) is named in the app’s own listing.

The cost is what every legal monopoly costs: no rivals bidding the margin down. NBA prices on TAB come with the spread the operator chooses to set, and the punter has no offshore book quoting against the same game from a New Zealand address. The bet is safe in the sense the law means, not in the sense the punter might mean.

TAB suits the punter who wants a New Zealand-regulated book with New Zealand harm-minimisation tools, a complaint route, and a wallet that closes cleanly. It does not suit the punter who wants the tightest spread on an NBA prop or a price boost on a Finals MVP.

Betcha

Betcha is the second online brand of TAB NZ, run by Entain under a 25-year agreement signed in 2023 that gives Entain a 50/50 share of gross profits, with at least $150m a year going to TAB NZ for the first five years and a one-off $100m payment to the racing sector. The app was first released on 6 August 2024 on the New Zealand App Store, published by Entain New Zealand Limited. Sports and racing betting are inside it; basketball sits among the listed sports.

What sets Betcha apart from TAB is the product. Both apps are backed by the same betting engine and the same wallet; Betcha tends to carry the more modern interface and the marketing aimed at a younger punter who has never walked into a TAB retail outlet. The legal frame, the age rule and the harm-minimisation tools are the same.

Betcha suits the punter who wants the same legal cover as TAB in a newer package. It does not suit the punter who treats Betcha and TAB as rivals — they are one operator group and the price on a given NBA game is the same on both.

Alawin

Alawin’s sportsbook lists football, tennis, table tennis, basketball, ice hockey, American football and baseball, with Live Betting, Virtual Sports and esports alongside. The site names no licence that applies in New Zealand; only TAB NZ may offer racing and sports betting to people in New Zealand, and a Curaçao or other offshore licence does not change that.

Alawin’s pitch is breadth. The sportsbook covers the major American leagues and the European sports, with live markets and virtual sports filling the gaps between fixtures. The punter who lands on Alawin from New Zealand gets the menu and not the regulator: no New Zealand complaints route, no DIA oversight, no Problem Gambling Levy funding, no harm-minimisation obligations written for New Zealand law. The DIA warns that overseas operators may be in jurisdictions with minimal consumer safeguards, may not return unspent credits and may not pay out large wins. None of that is fixed by the licence Alawin does or does not hold elsewhere.

Alawin suits a reader who is browsing what an offshore book looks like and is not betting from inside New Zealand. This book is not a viable option for a New Zealand punter seeking a lawful NBA platform.

RTbet

RTbet’s sportsbook covers football, tennis, table tennis, basketball, ice hockey, American football and baseball, with live betting and virtual sports. The brand names a Curaçao licence, which gives no right to take bets from people in New Zealand. The site lists no New Zealand regulator and no local harm-minimisation framework.

RTbet’s pitch is close to Alawin’s, with the same breadth across the major US and European sports. The same offshore caveat applies: a Curaçao licence is real for the markets it covers, and silent for New Zealand.

RTbet suits the same reader Alawin does, and not the New Zealand punter.

Roobet

Roobet’s sportsbook covers soccer, basketball, tennis, Counter-Strike, FIFA, baseball, ice hockey, MMA and table tennis, and the operator’s own terms require players to be 18 or older. The brand names a Curaçao licence, holder Raw Entertainment B.V., which gives no right to take bets from people in New Zealand.

Roobet sits closer to the esports-casino hybrid end of the market than the straight-sportsbook end. The NBA is on the menu but it sits beside Counter-Strike and FIFA, and the live-betting depth tends to match that mix. The same offshore caveat applies: no New Zealand regulator, no local complaints route, no Problem Gambling Levy funding.

Roobet suits a punter who mixes NBA betting with esports and wants the menu under one roof. A New Zealand punter who wants a regulated NBA book will not find it here.

Thunderpick

Thunderpick is esports-first across CS2, League of Legends, Dota 2 and Valorant, and its sportsbook offers a cash-out feature and markets from the Champions League to the NFL. The brand names a Curaçao licence, holder Paloma Media B.V., which gives no right to take bets from people in New Zealand.

Thunderpick’s pitch is the esports punter who also bets the NFL or the NBA. The sportsbook is thinner than the dedicated books but covers the major US leagues, with cash-out as a feature rather than an exception. Same offshore caveat.

Thunderpick suits a punter who bets more on Valorant than on the NBA and wants both menus on one site. This site falls short for a New Zealand punter who expects a regulated platform or an NBA-focused depth.

RoyalistPlay

RoyalistPlay’s sportsbook offers live betting, sports promotions, results and a schedule, with football, basketball, tennis, handball, ice hockey, volleyball and table tennis among the top sports, plus separate e-sports and Predictions sections. The brand names a Tobique Gaming Commission e-gaming licence, holder Novatrix SRL, which is not valid in New Zealand.

RoyalistPlay’s pitch is the European sportsbook shape: football first, basketball alongside, the rest filling in. The Predictions section is the kind of add-on an offshore book uses to suggest picks; the punter is advised to treat it as marketing, not analysis.

RoyalistPlay suits a punter who bets more Champions League than NBA and likes the schedule-and-results layout. New Zealand punters looking for a lawful service will find no reason to bet here.

Sportaza

Sportaza offers cash out before an event or market is finalised, Bet Builder (where one void selection voids the whole betslip), multiples, Asian lines and interval markets in 1, 5, 10 or 15 minute ranges. The brand names an Anjouan licence, which carries no local authorisation.

Sportaza’s pitch is the features menu. Cash-out before settlement, Asian lines for the punter who wants the spread half-points, and interval markets for the in-play bettor who wants 5 or 15 minute windows. The Bet Builder condition (one void leg voids the slip) is the kind of small print that costs a multi its stake when a single player is scratched.

Sportaza suits a punter who wants Asian lines, cash-out and interval markets under one roof and is not betting from New Zealand. This operator is not suitable for New Zealand punters, and the restrictive Bet Builder clause demands caution.

Spinbara

Spinbara advertises a first deposit bonus of 100% up to EUR 100 and a sport crypto welcome bonus of 100% up to 200 USDT on its English site, alongside a casino welcome bonus of 100% up to EUR 500 plus 200 free spins. The brand names no licence that applies in New Zealand.

Spinbara sits at the casino-with-a-sportsbook end of the market. The welcome offers are stacked across casino and sports, and the NBA menu sits inside a sportsbook that exists to feed the bonus engine. The punter who lands on Spinbara from New Zealand gets the bonus ladder and not the regulator.

Spinbara suits a punter who wants the casino and the sportsbook under one wallet and is browsing offshore. New Zealand punters are not the target here, and the welcome bonus terms carry complex turnover requirements.

FunBet

FunBet’s sportsbook offers odds on football, ice hockey, American football, basketball, volleyball, tennis, rugby and baseball, with live betting and a bookmaker described as open 24/7. The brand names no licence that applies in New Zealand.

FunBet’s pitch is the round-the-clock sportsbook, with the major US and European sports and live markets. The 24/7 line is the marketing claim; the menus fill the schedule with whichever league is in season.

FunBet suits a punter who wants a live NBA bet at 3am New Zealand time and is not betting from inside New Zealand. It does not suit a New Zealand punter.

The legal frame around NBA betting in New Zealand

Who may take the bet

The Department of Internal Affairs is the gambling regulator under the Gambling Act 2003 and monitors compliance with the betting prohibition. The Racing Industry Act 2020 establishes TAB NZ as the sole betting provider for racing and sports in New Zealand. The Racing Industry Amendment Act 2025 inserted section 74AAA: no person other than TAB NZ may offer racing betting, sports betting or other racing or sports betting to a person in New Zealand, regardless of where that person is resident or incorporated. The change took effect on 28 June 2025, and DIA told providers serving New Zealand to withdraw with immediate effect. There is no licensing route for another bookmaker and no licence register for betting, because there is only one lawful operator.

TAB and Betcha are the two lawful online brands of TAB NZ, run by Entain under a 25-year partnership signed in 2023: never present Betcha as a rival bookmaker. The Online Casino Gambling Act 2026 licenses online casino gambling only and does not license sports betting; TAB New Zealand winning the right to apply for a casino licence does not extend the betting monopoly. Greyhound racing is closing in stages from 1 August 2026, and from that date offshore operators may not take bets on greyhound races either.

What may be bet on

TAB NZ takes fixed-odds and tote (pool) bets; its published betting rules define Win, Place, Each Way, Quinella, Exacta, Trifecta, First Four, Double, Treble, Daily Double, Running Double, Quaddie, Big6, and Multis and Same Game Multis. Live betting is listed in the TAB NZ apps; any statutory restriction on in-play markets is not established. No lawful New Zealand betting exchange exists and spread betting is outside TAB NZ’s sports-betting definition: write nothing about a New Zealand exchange. Bets on politics and novelty markets: not established. There is no statutory per-bet cap; limits are TAB NZ’s own terms. The ban covers events held inside and outside New Zealand.

What that means for an offshore book

Since 28 June 2025 an overseas bookmaker taking sports or racing bets from a person in New Zealand is breaking New Zealand law (DIA’s statement). The penalty for breaching section 74AAA is not stated in the section and no prosecution of an offshore bookmaker was found. New Zealand does not block bookmaker sites. The player: section 19(4) of the Gambling Act 2003 (inserted in 2025) says an individual may not be convicted for placing a bet with an offshore betting operator in breach of section 74AAA; no source states a penalty for a player. Honest framing: New Zealand law targets the operator; DIA warns players of the risks; no published penalty for a player was found.

Payments, advertising and tax

No statutory payment rule for betting accounts (card, bank, credit, prepaid, crypto) was found; TAB NZ’s deposit methods and limits are operator-level and come only from its terms. DIA warns that overseas operators may be in jurisdictions with minimal consumer safeguards, may not return unspent credits and may not pay out large wins. No payment-blocking order or bank obligation was found.

The Advertising Standards Authority’s Gambling Advertising Code applies to betting advertisements: ads must not target children (under 14) or young people (14 to under 18), judged by context, appeal and expected audience (25% or more of the audience counts as significant where accurate data exists), must not encourage harm, and must be truthful with terms available.

For the player, Inland Revenue guidance says recreational gambling winnings are generally not taxable and prize money from TAB horse, dog and trotting races is not taxable; a person who bets as a business is a different case — general information, not tax advice, “consult Inland Revenue or an accountant”. Operator side: TAB NZ pays the Problem Gambling Levy (0.74%); overseas operators supplying New Zealand residents pay online gambling duty (12% of profits since 1 July 2024, 16% from 1 January 2027), but a duty being payable does not make an offer lawful — never write that tax payment shows a bookmaker is legal. The point-of-consumption charge on offshore racing and sports bets ceased on 30 June 2026.

Harm minimisation, self-exclusion and where the help lines sit

TAB NZ accounts need a verified New Zealand address and ID. TAB NZ lists deposit limits, time-outs and self-exclusion in its apps, and an exclusion applies across its brands (TAB and Betcha). There is no single national online-betting exclusion register: the register the casino law will require is for online casinos only. TAB NZ must keep the risks of problem and underage gambling minimised, and pays a Problem Gambling Levy of 0.74% (in force from 1 July 2025 to 30 June 2028).

The age for TAB NZ betting is 18 (betting under 18 is an offence under section 89 of the Racing Industry Act 2020); land-based casinos are 20 — never merge the two. Help: the free Gambling Helpline at 0800 654 655 (text 8006) and Safer Gambling Aotearoa. The offshore books carry their own age rules and self-exclusion tools, but no New Zealand complaints route reaches them, no Problem Gambling Levy funds their harm-minimisation work, and no DIA oversight applies to their menus.

Reading the predictions and strategy pages that the searches turn up

Searches for “best bets NBA today”, “best NBA prop bets today” and “best parlay bets today NBA” return sites that publish picks, tips and computer-generated predictions. None of them is a tipster in the sense of knowing who will win. A “computer pick” is a model output based on historical data and current prices, and a model is only as good as the inputs it has and the prices it sees. The picks pages are useful for what they say about the line: when a model sees value at $2.20 on a side the market has at $2.00, the model is telling the punter the price is wrong, not that the side wins.

A punter who follows picks is advised to treat them the way they treat a tip from a mate: useful as a counterweight to their own read of the game, never as a substitute for it. A bankroll rule that fits a New Zealand punter with one lawful book is the boring version: stake a fixed percentage of the bank per bet, keep the bet size the same whether the tipster is hot or cold, and stop when the stop-loss is hit. The excitement is in the season, not in staking 10% of the bank on a single Finals game.

A “best bets NBA tonight computer” pick is no better than the model behind it. A “best NBA betting tips site” is no better than its record over hundreds of bets, not the three it advertises. The punter who tracks the record themselves, in a spreadsheet, will learn more in a month than any picks page teaches in a year.

How the margin moves the prices on the page

Take an illustrative two-way market priced at $1.90 on each side. The implied probability on each side is 1 ÷ 1.90 = 52.63%. Adding the two sides gives 105.26%. The 5.26 percentage points above 100 is the overround, which equals the margin. A 5% margin means the book keeps 5.3 cents of every dollar wagered on that market in expectation, and pays back 94.7 cents across both outcomes.

In practice, NBA main markets on a competitive book sit between 3% and 5% margin depending on the side and the timing. Player props and futures carry heavier margins, often 7% to 10%, because the book has less liability to manage and the punter has less price to compare against. The headline price never shows the margin; the implied probability does. Two books quoting $1.91 and $1.95 on the same side have margins that differ by roughly one cent in the dollar, and the punter who reads the implied probability will see which one is cheaper.

The arithmetic belongs to the writer, not the punter. The punter’s job is to read the price, see the implied probability, and decide whether the side they want is worth the slice the book takes. The book that quotes the tighter margin is the cheaper book for the same outcome, and that is the comparison that matters.

A worked example of the margin on a two-way market

A two-way market priced at $1.90 / $1.90 implies a margin of 1 − 1 ÷ (1 ÷ 1.90 + 1 ÷ 1.90) = 1 − 1 ÷ 1.0526 = 1 − 0.95 = 0.05, or 5%. The book keeps 5c in the dollar on that market across both outcomes. The punter who stakes $100 on each side and one wins gets $190 back from the winning side, $100 from the losing side returned to the book, and $10 of the original $200 stake stays with the book. That $10 is the margin.

A 5% margin is a band, not a number. NBA main markets sit between 3% and 5%; player props and futures sit between 5% and 10%. The punter who reads the implied probability will see the band; the punter who reads the headline price will not. The cheaper book on a given NBA game is the one with the lower margin, and that comparison is what makes one menu worth more than another for the same set of outcomes.

Choosing a book when the legal choice is one

The choice a New Zealand punter actually has is the TAB app or the Betcha app. Both are run by TAB NZ under the same licence, both accept a New Zealand address and ID, both carry the same harm-minimisation tools and the same complaint route through the Department of Internal Affairs. The punter who wants the legal cover bets on TAB or Betcha and nowhere else.

The punter who wants the deepest NBA menu, the tightest spread on a Finals MVP prop, or the price boost on a futures line will find that menu offshore. That menu is unlawful for the operator to serve, has no New Zealand complaints route, and carries the risks DIA names: minimal consumer safeguards, unspent credits that may not be returned, large wins that may not be paid out. None of that is fixed by the licence the offshore book does or does not hold elsewhere.

The honest framing is the boring one. TAB and Betcha are the only lawful option, with New Zealand harm-minimisation tools, regulator oversight and a complaints framework. Offshore books are unlawful for the operator to serve New Zealand, have no New Zealand complaints route, carry DIA’s stated risks, and may pay out or may not. Neither is “the safe choice” by default: the legal book is the lawful option, and the offshore book is a separate decision the punter makes with the regulator’s warning in front of them.

Where this leaves the New Zealand NBA punter

The NBA season runs October to June, with 82 regular-season games per team, 30 franchises split across the United States and Canada, and the Finals decided by mid-June. The Knicks hold the 2026 title; the Thunder hold the 2025 title; the Celtics hold the all-time record at 18. Punters who want a dollar on any of it bet on TAB or Betcha, because those are the only two apps the Racing Industry Act 2020 lets take the bet from inside New Zealand.

The price the punter reads carries a margin of 3% to 5% on the main markets and heavier on the side markets, and the implied probability is the way to see it. A two-way market at $1.90 on each side is a 5% margin; the same outcome at $1.95 on each side is closer to a 2.6% margin. The punter who reads the implied probability pays less for the same bet, and that comparison is what makes one book worth more than another for the same outcome.

The picks pages, the tips sites and the computer models are useful as counterweights, not as predictions. None of them knows who will win. The punter who keeps the stake size the same, tracks the record themselves and stops at the stop-loss has a better chance of staying in the game until the Finals than the punter who chases the headline price. That is the boring version, and it is the one the bankroll survives.

Frequently asked questions

Can NBA players bet on other sports?

NBA players are barred from betting on any sport while in the league, on their own sport or any other. The rule sits inside the NBA’s own gambling policy, not in the betting law, and the league enforces it through fines and suspensions. A punter is a different case: the betting rules that apply are TAB NZ’s terms for New Zealand residents, and the age rule (18+) and the self-exclusion tools are the things that bind.

How do second half bets work in the NBA?

A second-half bet settles on the score from the third and fourth quarters alone. The first-half score is wiped. Overtime does not count: a 2H bet is a 2H bet, not a 2H-plus-OT bet, and overtime points sit outside it. A push, where the line lands exactly on the number, returns stake. The slip will say explicitly whether overtime counts, and the punter is advised to read it before staking.

How do you bet on the NBA from New Zealand?

A New Zealand punter opens a TAB or Betcha account with a verified New Zealand address and ID, sets a deposit limit from inside the app, deposits funds and picks a market. The two apps share one wallet and one set of betting rules. The offshore books take bets from New Zealand addresses but the operator is breaking New Zealand law in doing so, and the punter has no New Zealand complaints route if the book declines to pay out.

Which bookmaker may lawfully take sports and racing bets in New Zealand?

TAB NZ, through its two online brands TAB and Betcha, is the only provider lawfully offering racing and sports betting to people in New Zealand since 28 June 2025 (section 74AAA of the Racing Industry Act 2020). There is no licence register for bookmakers because there is only one lawful provider. The Department of Internal Affairs told unlicensed providers to withdraw with immediate effect on that date.

How is the return on a bet worked out from the stake and the odds?

The return is stake multiplied by the decimal odds. A $50 bet at $2.40 returns $120, of which $50 is the stake back and $70 is the profit. A combination bet multiplies the leg prices together: two legs at $2.00 and $3.00 make a $6.00 multi. The book’s margin sits inside every leg, so the multi’s true probability of winning is lower than its price implies.

What is the bookmaker’s margin and how can it be seen in the odds?

The margin is the slice the book keeps of every dollar wagered, expressed as a percentage. The way to see it is to flip a market’s prices into implied probabilities (1 ÷ odds) and add them. Take a two-way market at $1.90 on each side: 1 ÷ 1.90 = 52.63%, and adding the two sides gives 105.26%. The 5.26 percentage points above 100 is the overround, which equals the margin. The headline price never shows the margin; the implied probability does.

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