Sports betting odds in New Zealand: how they work and what they cost

Updated October 2026

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Current as of October 30, 2026 and checked against the Racing Industry Act 2020 (as amended 2025) and the Department of Internal Affairs register.

The number on a betting slip is not the outcome. It’s the price. And every price carries the bookmaker’s margin before a cent is paid out.

New Zealand is not a market where bettors weigh one bookmaker against another for the best odds. Since an amendment to the Racing Industry Act 2020 took effect on 28 June 2025, TAB NZ and its online brand Betcha are the only operators allowed to take online sports and racing bets from people in New Zealand. The Department of Internal Affairs told unlicensed providers to withdraw with immediate effect. Other brands reviewed in this guide — Thunderpick, Rooster, Winz, BetAlright, Sportaza, FunBet, BillyBets, BetNinja — are not licensed in New Zealand and may not lawfully offer their services here.

That means the comparison below works differently than it does in jurisdictions with dozens of licensed books. TAB NZ sets the terms. The question for a Kiwi punter is how to read what TAB NZ offers — and what it costs.

Staying in Control While You Bet

Harm minimisation lives inside the account before it lives in any advertisement. TAB NZ builds the tools that matter — deposit limits, time-outs, self-exclusion — directly into its app, and the brands share exclusion, which means a self-exclusion on TAB also extends across Betcha.

The Tools Already in Your Hand

A first-time account holder can set a daily, weekly or monthly deposit cap before the first dollar goes through. That cap is the single most effective setting a recreational bettor can make; most people who get into trouble never bothered to set one. Time-outs let you step away for a fixed period, from a day to several weeks, without losing the account. Self-exclusion is the heavier option: a ban lasting six months, a year or longer, applied across TAB NZ’s brands and intended for someone whose gambling has become a problem rather than a pastime.

When the Tools Aren’t Enough

The app publishes the free Gambling Helpline — 0800 654 655, or text 8006 — alongside the safer-gambling menu. Those numbers reach counsellors under the umbrella of Safer Gambling Aotearoa, the main face of treatment and education services in New Zealand. The Gambling Act 2003 keeps the legal floor under the levy TAB NZ pays toward problem-gambling services, set at 0.74% for the current three-year period. That machinery is not background decoration. It is the channel a punter uses when their own settings prove insufficient, and it is reachable without an appointment or a referral.

Restrictions Worth Their Weight

The age bar is 18 for betting, separate from the 20-year bar at land-based casinos. TAB NZ accounts require a verified New Zealand address and ID. The Offshore block falls on the operator, not the player: section 19(4) of the Gambling Act 2003, inserted in 2025, says an individual cannot be convicted for placing a bet with an offshore operator breaking section 74AAA. No published penalty for a player exists. What DIA does say is that overseas operators may be in jurisdictions with minimal consumer safeguards, may not return unspent credits and may not pay out large wins. The risk is not legal; it is practical.

How Betting Odds Work — Selection, Stake and Settlement

The mechanics are the same wherever the bet is placed. Three building blocks carry every wager.

The Stake Is What You Risk

The stake is the amount on the line when the bet settles. $10 means the bettor risks $10 of their own money. A winning bet returns the stake plus profit; a losing bet returns nothing. New Zealand bookmakers price in decimal form — $2.10 reads as “return two-dollars-ten for each dollar staked, including the original dollar”. The decimal number bundles the stake and the profit into one figure. A price below $2.00 means the bookmaker’s margin sits between the two outcomes; a price above $2.00 means a smaller margin sits there.

The Odds Decide What You Win

The return on a winning bet is stake multiplied by odds. A $10 stake at decimal odds $2.10 returns $21, of which $11 is net profit and $10 is the original stake. The same formula works at any price the bookmaker publishes. Where the bet brings together several selections — a multi, where each leg is chosen and all must win for the bet to pay — the legs multiply into a single price. Two legs at $1.50 each combine to a combined price of $2.25; three legs at $1.40 each combine to $2.74. The combined price grows fast and so does the risk, because each added leg is one more thing that has to go right.

TAB NZ’s Specialised Markets

The TAB NZ app carries exotic bet types beyond the simple win bet: Quinella (the first two in order), Exacta (the first two in order, your choice), Trifecta (the first three in order), First Four (the first four in order), Doubles, Trebles, Daily Doubles, Running Doubles, Quaddie and Big6. Same Race Multis and Same Game Multis pull several selections into one bet, with the Same Game Multi limited to legs from a single event. Place Extra lets punters back a runner to finish as high as tenth in selected races. Each of these is settled under TAB NZ’s published betting rules, which every punter can read before placing a bet.

Live Betting and In-Play

TAB NZ lists live betting inside its app for selected events; pre-match and live markets run side by side in a fixture. In-play odds update faster than the screen refreshes on some events, and a bet placed at one price settles at that price regardless of where the odds move immediately after. What statutory controls apply to in-play markets is not established in the law reviewed here — TAB NZ’s own terms decide which live markets it offers and how.

Cash Out, Bet Builder and Boosted Odds

Cash out closes a bet before the event settles; the cash-out figure locks in at the moment the punt accepts it, and the cash-out amount is not guaranteed to be available throughout the event. Bet Builder combines several selections from one match into a single bet — common at NZ-friendly books worldwide — and TAB NZ offers the feature where the betting rules allow. Boosted odds are advertised prices with a margin the bookmaker has chosen to compress for a fixture, usually as part of a multi or a headline match; the boost runs for the fixture named. None of these features change the underlying arithmetic. The stake is the stake. The odds are the odds. The margin is inside them.

NZ Bookmakers Worth Comparing

The comparison below mixes the only licensed brands with the offshore books a New Zealand player may encounter. Every bookmaker is rated by the same key facts, and the table lists the lawful status of each under the Racing Industry Act 2020. No offshore brand here is licensed to take bets from people in New Zealand. TAB and Betcha are not rivals — both sit inside the TAB NZ group.

How These Operators Compare

The lawful-status column makes the structure of the market plain. Two brands belong to TAB NZ; the other eight sit outside the New Zealand licensing regime. Conflating the two groups — treating Thunderpick or BetNinja as a peer of TAB NZ — masks the very difference research flags as material.

TAB NZ

TAB is the long-running brand. It started as a tote operation and grew into fixed-odds betting and racing coverage alongside a sportsbook. Underneath the brand sits TAB New Zealand, the holder of the Racing Industry Act monopoly, and behind it sits Entain, the global operator running the TAB business under a 25-year partnership signed in 2023. That partnership gives Entain a 50/50 share of gross profits and commits at least $150m a year to TAB NZ for the first five years — a floor that protects TAB NZ’s distributions from any one bad year.

The TAB NZ app covers horse and harness racing, rugby union, rugby league and other sports, with pre-match and live markets running side by side. It carries a 17+ App Store rating while making clear the actual age bar is 18 — the higher App Store floor covers the same content. Customers see a simplified wallet, racing form, Blackbook and Jockey Challenge tools, and Trackside live streaming for selected events. Same Race Multis, Same Game Multis, one-tap Popular Multis and Place Extra are all built in.

New customers can receive Bonus Cash that splits across multiple bets, and the app lists a Mega Multi bonus paying up to $50 in Bonus Cash where a four-leg multi misses by a set number of legs. Each promotion carries terms that apply at the point of claiming. TAB NZ keeps the only lawful market to itself, which makes the price the only price on offer.

Betcha

Betcha is the second TAB NZ brand, the online-focused sibling of TAB. It runs on the same betting engine and the same licence but presents a different front-end experience.

The daily Toolbox in the Betcha app bundles odds boosts and insurance tools for bets that don’t quite land. A Bet Social section sits inside the app — punters chat, follow tipsters and share bets or pools. A Playbook carries tips and match analysis drawn from Betcha’s own editorial staff. The app’s wallet and deposit flow stay common with TAB so punters see a consistent experience whichever brand they open.

The legal note is the one that matters: Betcha is not a rival to TAB. Both belong to TAB NZ, both run on the same licence, and a self-exclusion on one carries to the other. Where the comparison page suggests otherwise, the page is wrong.

Thunderpick

Thunderpick is the first of the offshore brands reviewed, and the lawful-status column says it plainly: not licensed in New Zealand. The Curaçao licence under which Thunderpick operates — OGL/2024/677/0722, held by Paloma Media B.V. — gives the brand no legal standing to operate in the New Zealand market. New Zealand’s harm-minimisation framework does not extend to it, and a dispute with the operator sits outside any New Zealand complaints route.

The brand sits well outside the comparison a Kiwi punter can act on. The page includes it for completeness, because New Zealand players will encounter the name through affiliate channels or global sponsor reads, and a reader who meets Thunderpick in the wild ought to know what it is.

Rooster

Rooster runs under a Tobique Gaming Commission e-gaming licence, held by Novatrix SRL, a Costa Rica company. Like Thunderpick, Rooster is not licensed in New Zealand, and the Tobique licence provides no authorisation for New Zealand wagering.

Rooster’s sportsbook lists Live, Sports Promotions, Results, Schedule, E-sports and Predictions sections, and shows odds in six formats so the reader can pick the layout they’re used to. That breadth is the brand’s selling point globally. Within New Zealand, the licence picture does not change.

Winz

Winz publishes Anjouan and Tobique licences in its footer. Neither provides any valid footing for New Zealand wagering; the brand sits alongside the rest of the offshore group in this comparison.

Winz is known outside New Zealand for a crypto-friendly cashier and a slot-heavy front page. The sportsbook is present but is not the centrepiece. A Kiwi punter has the lawful options above; this brand does not extend that list.

BetAlright

BetAlright states only that customers must be over 18 and runs a separate partners site. The brand names no licence applicable in New Zealand. Betting on BetAlright from inside New Zealand puts the punter in the same position as on any other offshore brand — the operator is breaking section 74AAA, the punter has no New Zealand complaints channel, and a payout dispute is decided by the operator’s own rules.

Sportaza

Sportaza carries an Anjouan licence (ALSI-202606064-FI2), which gives the brand no lawful footing in New Zealand.

What Sportaza offers elsewhere is a broad sportsbook: cash out before an event or market is finalised, a Bet Builder where one void leg voids the whole slip, multiples, Asian lines, and interval markets by 1, 5, 10 or 15 minute ranges. The features are typical of the offshore tier. They are not reachable from inside New Zealand’s licensing regime.

FunBet

FunBet offers football, ice hockey, American football, basketball, volleyball, tennis, rugby and baseball, with live betting described as running 24/7 and accumulator or bet builder tools. The site names no licence applicable in New Zealand.

The brand’s positioning globally is breadth of sport and the live-betting schedule. Within New Zealand, the lawful-status column applies: not licensed in New Zealand.

BillyBets

BillyBets lets bettors pick between three odds formats — Decimal ($2.00), American (+100) and Fractional (1/1) — a small detail that matters for readers used to non-decimal layouts. The site also runs a cashback-and-reload sports bonus structure, and a coin shop where coins earned through depositing, betting, tournaments and challenges can be exchanged for free bets and free spins, with a five-level VIP scheme on top.

The brand names no licence applicable in New Zealand. The features are typical of the offshore tier.

BetNinja

BetNinja states it is licensed by the Union of the Comoros. That licence provides no valid footing for New Zealand wagering. The brand sits at the same lawful-status position as the other offshore books in this list.

NZ Betting Rules at a Glance

The frame around the comparison above determines what a Kiwi punter can actually do. Two provisions matter more than the rest.

The Monopoly and Where It Lives

Section 74AAA of the Racing Industry Act 2020 — inserted by the Racing Industry Amendment Act 2025 and in force since 28 June 2025 — says 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 prohibition sits with the operator, not the punter. There is no licensing route for another bookmaker and no licence register for betting, because there is only one lawful provider.

The Department of Internal Affairs told providers serving New Zealand to withdraw with immediate effect. The law does not geo-block offshore websites — it puts liability on the offshore operator. The Offshore Casinos section of the Operators Act describes how the offshore tier operates; Kiwi punters land on offshore sites for reasons unrelated to the licensing question.

What May Be Bet On

Racing and sports betting from TAB NZ only. TAB NZ takes fixed-odds and tote (pool) bets. The published betting rules define the bet types — Win, Place, Each Way, Quinella, Exacta, Trifecta, First Four, Double, Treble, Daily Double, Running Double, Quaddie, Big6 — and the multis. Greyhound racing is closing in stages from 1 August 2026; from that date, offshore operators may not take bets on greyhound races either.

Player Protection and How the Tools Connect

The age bar is 18 for TAB NZ betting; land-based casinos sit at 20 — never merge the two numbers. TAB NZ accounts require a verified New Zealand address and ID. Deposit limits, time-outs and self-exclusion are built into the apps. An exclusion applies across the brands (TAB and Betcha). The free Gambling Helpline is 0800 654 655 and the text line is 8006.

No single national online-betting exclusion register exists. The register the 2026 online casino law requires is for online casinos only and does not extend to TAB NZ or Betcha. TAB NZ pays the Problem Gambling Levy at 0.74% for the period from 1 July 2025 to 30 June 2028.

Advertising and What Operators May Say

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) and the test is context, appeal and expected audience (25% or more of the audience counts as significant where accurate data exists). Ads must not encourage harm and must be truthful with terms available. No New Zealand equivalent of a “whistle-to-whistle” ban for betting was found. TAB NZ runs “bonus bets” promotions; no New Zealand rule on bet-bonus size or wagering terms was found, so quote only TAB NZ’s own terms.

Tax and What Inland Revenue 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). The duty being payable does not make an offer lawful — paying tax does not qualify as a licence. The point-of-consumption charge on offshore racing and sports bets ceased on 30 June 2026.

The Margin and What an Even Odds Line Tells You

The bookmaker’s margin is the difference between what every punter stakes on a market and what the bookmaker pays back in total. The simplest way to show it is on an even two-way line.

Why 1.90 / 1.90 Is Not 50/50

Take an illustrative two-way market priced at decimal odds $1.90 and $1.90 on each side. A naïve reading says each outcome is a 50/50 coin toss; a correct reading says the bookmaker has already taken their cut. The arithmetic: payout share equals one divided by the sum of one-over-odds across every outcome of one market. For one outcome at 1.90, one over 1.90 is approximately 0.5263; for the other outcome the same; the sum is approximately 1.0526. The payout share is one divided by 1.0526, which is approximately 0.95, or 95%. The margin is one minus 0.95, which is 5%.

A 5% margin is mid-range for major-market two-way lines. It is not a guarantee — different sports and different bet types carry different margins, and bookmakers in some markets run lower margins on headline events — but the figure gives the punter a handle on what the bookmaker keeps of every dollar staked on that market.

What the Number Looks Like for the Bettor

A $100 stake spread evenly across both sides of this market — $50 each way — collects roughly $95 in total returns at the resolution of the event, of which $5 goes to the bookmaker regardless of which outcome wins. The punter’s hope is to be on the winning side; the bookmaker’s outcome is determined before the event starts. The margin is why the odds are never a true reflection of probability.

The figure of 5% is an example, not a quoted price, and is meant to walk through the arithmetic. Actual margins on TAB NZ events vary by sport, market and timing. The same formula carries through every market a bookmaker offers.

Reading Margins in a Real Market

A punter cannot see the margin directly on a betting slip. They can infer it from the prices on both sides. The closer the two prices sit to one another and the further from $2.00, the smaller the margin. The further the prices sit from one another, the larger the margin inside the favourite-or-underdog skew. The market with the smallest margins tends to be a major-sport head-to-head with deep liquidity; the market with the widest margins tends to be a niche outright, a minor-league fixture or a market priced early before the bookmaker has seen money on both sides.

Why Margins Matter at Every Stake

The punter with a small budget loses more to a wide margin than the punter with a large one in absolute terms, but proportionally both pay the same percentage — the margin bites at every level of stake. The compounding effect comes from volume: a punter placing fifty bets a year at a 7% margin pays roughly $35 of every $500 staked back to the bookmaker; a punter placing five hundred pays $350 of every $5,000. The mechanical result is unchanged by bet size and unchanged by skill.

The Math, Plainly Stated

Three formulas cover the arithmetic a punter meets in everyday betting.

Return on a Winning Bet

The return on a winning bet is the stake multiplied by the odds. The net profit is the stake multiplied by (odds minus one). A $10 stake at decimal odds $2.10 returns $21 in total ($10 stake plus $11 profit). The same formula works on any other price the bookmaker publishes; $2.50 on a $10 stake returns $25 ($10 stake plus $15 profit); $5.00 on a $10 stake returns $50 ($10 stake plus $40 profit). For a combination bet, the odds of the legs multiply into one combined price, so two legs at $1.50 each combine to $2.25 and three legs at $1.40 each combine to $2.74.

What the Margin Costs Over Many Bets

The expected cost of betting through a turn-over requirement at a given margin is the turnover multiplied by the margin. If the punter must turn over $1,000 of stake at a 5% margin, the expected cost is $50. If the margin is 7%, the expected cost is $70. The estimate is an average over many bets; the realised cost on any single line can be lower or higher.

Free-Bet Value Where Stake Is Not Returned

A free bet whose stake is not returned with a winning bet has a value equal to the free-bet amount multiplied by (odds minus one) divided by odds, multiplied by the payout share of the market. The headline offer may be “a $50 free bet” but what it is worth on average depends on the odds taken and the market priced; the free-bet amount itself is rarely what the offer returns.

Putting It Together

TAB NZ and Betcha sit inside the only lawful option for a Kiwi punter. The other brands reviewed here are not licensed in New Zealand and the Department of Internal Affairs has told providers serving New Zealand to withdraw with immediate effect. The two options are not interchangeable. TAB NZ ships the licence, the regulator and the harm-minimisation machinery the law requires; offshore brands ship feature breadth and price competition that the law does not allow here.

Inside TAB NZ the arithmetic is the standard one: stake times odds gives the return, one minus payout share gives the margin, and the margin sits inside every price on every market. The tools to set a deposit limit, take a time-out or self-exclude live in the app and the Gambling Helpline sits one number away. The rules that surround this — the age bar, the verification, the regulator’s oversight — exist to make the market a known quantity rather than a frontier.

The remainder of the guide lives in the FAQ below.

Frequently Asked Questions

How do betting odds work?

Betting odds in New Zealand are written in decimal form, showing the total return for each dollar staked. A $2.10 price means a winning $10 bet returns $21 (including the $10 stake). The decimal number bundles stake and profit into one figure, so reading it back is arithmetic rather than a conversion.

How do odds work with betting on horse racing?

TAB NZ’s horse-racing odds price the win, place and each-way markets along with the exotics — Quinella, Exacta, Trifecta, First Four, Quaddie, Big6. The price applies to the bet type it accompanies. A quinella price is not a win price; it covers the first two finishers in order. Pool (tote) bets settle on a dividend announced after the race closes, distinct from the fixed-odds price on the same runner.

How do I bet at horse races odds?

Open a TAB NZ or Betcha account with a verified New Zealand address and ID, set a deposit limit before the first deposit, browse the race card on the TAB NZ app, choose a runner and stake type, place the bet before the jump, and follow the result in the app. Trackside live race streaming with in-app betting runs for selected meetings. The app also publishes racing form, Blackbook and Jockey Challenge tools for pre-race study.

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

Since 28 June 2025, only TAB NZ — through its TAB and Betcha brands — may lawfully take online sports and racing bets from people in New Zealand. Section 74AAA of the Racing Industry Act 2020 inserts the monopoly. No other bookmaker holds a licence to take bets here. Other brands in this guide are not licensed in New Zealand and may not lawfully offer their services here.

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

The return on a winning bet is the stake multiplied by the odds. A $10 stake at decimal odds $2.50 returns $25 in total, of which $15 is net profit and $10 is the original stake. For a multi where several selections must all win, the legs multiply into a combined price first, and the return is stake times that combined price. TAB NZ’s published betting rules define how each bet type settles, including void-leg handling.

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