What Arbitrage Betting Actually Costs in New Zealand

Updated October 2026

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The pricing data and licence status quoted on this page were checked against the Department of Internal Affairs register and TAB NZ’s published terms as of 30 October 2026. Where a snapshot date appears beside a number, that is the date the price was quoted; the licence claims were verified against the Racing Industry Act 2020 as amended.

The first thing to settle, before any arithmetic, is a quiet fact that changes the answer for almost every New Zealand reader. Since 28 June 2025 the only operators lawfully allowed to take online sports and racing bets from a person in New Zealand are TAB NZ and its online sister brand Betcha. The change came by way of section 74AAA of the Racing Industry Act 2020, inserted by the Racing Industry Amendment Act 2025, and the Department of Internal Affairs told unlicensed providers to withdraw with immediate effect. There is no licence register for betting in New Zealand because there is only one lawful provider. A technique that, by its nature, requires several bookmakers quoting different prices on the same event cannot be run inside that frame. That is the cost the reader pays before opening a calculator: arbitrage as commonly described is not available to a New Zealand bettor using only lawful operators.

What follows is a careful walk through what arbitrage betting is, what the law does and does not do about it in New Zealand, the arithmetic behind the prices, what it costs to run even where it is open, and what ten named operators actually offer. The angle is cost — what this technique asks of the reader in money, in account standing, in legal exposure and in time. Every figure carries its source. Where the data has a gap, the page says so in words rather than inventing one.

The Statutory Frame for Online Betting in New Zealand

Section 74AAA and what it actually prohibits

The Racing Industry Amendment Act 2025 inserted section 74AAA into the Racing Industry Act 2020. The plain text is short. No person other than TAB New Zealand 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 took effect on 28 June 2025. The Department of Internal Affairs followed up with a direction to providers serving New Zealand residents to withdraw with immediate effect.

The section closes the door that used to be ajar. Before 28 June 2025 a New Zealand bettor placed bets with several overseas-licensed bookmakers without those operators breaking any specific New Zealand statute aimed at the activity itself. That is no longer the position. An offshore bookmaker taking sports or racing bets from a person in New Zealand is breaking New Zealand law. The penalty for breaching section 74AAA is not stated in the section itself, and no prosecution of an offshore bookmaker was found at the time of writing.

What is not a licence to bet with

A Curaçao licence, a Tobique Gaming Commission e-gaming licence, a Comoros licence, an Anjouan licence — none of these gives a right to take bets from a person in New Zealand. New Zealand law is point-of-consumption: it looks at where the bettor is, not where the operator is registered. Several operators in the comparison below carry exactly such licences. They are listed because New Zealand bettors meet them, but the licence a Curaçao-licensed brand holds gives that brand no standing under section 74AAA.

What a Curaçao licence does give is permission to operate from Curaçao. It does not extend to New Zealand. Some of these brands also hold no licence at all and exploit the lack of enforcement against individual players. The Department of Internal Affairs has been explicit that operators in jurisdictions with minimal consumer safeguards may not return unspent credits and may not pay out large wins. The page repeats that warning once, here, because it is a condition the reader needs in mind when reading any operator review below.

The player and the offshore operator

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. The page writes this plainly: New Zealand law targets the operator, the regulator warns players of the risks, and no published penalty for a player was found. The page does not describe offshore betting as legal for the player, and it does not describe it as illegal for the player. It describes what the law does.

The Entain partnership and the two TAB NZ brands

TAB NZ is run under a 25-year agreement signed in 2023 with Entain. The deal 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 Entain pledged a one-off $100m payment to the racing sector. The practical result is two online brands: TAB and Betcha. Both are TAB NZ brands. They are not rivals. They sit on the same product, the same licence, the same safer-gambling tools and the same customer database. Betcha runs a daily Toolbox with odds boosts and insurance tools for bets that do not land, a Bet Social section where punters chat, follow tipsters and share bets or pools, and a Playbook with tips and match analysis. The two brands differ in feel and feature set; they do not differ in legal standing.

A reader who only sees the betting market has to weight Realistic Money, because Betcha’s tools are not what makes arbitrage possible. They are the marketing layer over a single underlying bookmaker. That alone is enough to close off any two-bookmaker arbitrage scheme inside New Zealand law.

What Section 74AAA Does Not Reach

Casino and the Online Casino Gambling Act 2026

The Online Casino Gambling Act 2026 licenses online casino gambling. It does not license sports betting. TAB New Zealand winning the right to apply for a casino licence does not extend the betting monopoly, and the casino licence the new law will issue does not turn the programme into a sportsbook. A New Zealand casino licence and a New Zealand sports-betting licence are different permits with different rules. The page reads as one and not the other throughout.

Greyhound racing and the offshore greyhound market

Greyhound racing is closing in stages from 1 August 2026. From that date offshore operators may not take bets on greyhound races either. The greyhound betting market, which is already small in New Zealand and shrinking under the welfare-driven phase-out, is closed off from offshore work a few months after this page is read.

The lack of a national exclusion register

There is no single national online-betting exclusion register. The register the 2026 online casino law will require is for online casinos only. A bettor who self-excludes from TAB NZ is excluded across TAB NZ’s brands (TAB and Betcha) because both run on the same account system. The exclusion does not reach an offshore bookmaker. A bettor who wants a fuller exclusion has to manage it brand by brand.

Safer Gambling Tools and Where Help Is Reached

The tools TAB NZ provides in its app

TAB NZ provides safer gambling tools in its app: deposit limits, time-outs and self-exclusion. These are operator-level controls on a verified TAB NZ account, not statutory defaults. The deposit limit is set by the bettor within a range TAB NZ’s terms define. Time-outs pause the account for a chosen period. Self-exclusion closes the account for a longer term and is the strongest tool the app provides.

The Gambling Helpline and text line

TAB NZ lists the free New Zealand gambling helpline 0800 654 655 and the text line 8006 in its app. The lines are operated by Safer Gambling Aotearoa and are free from a New Zealand phone. They are the right place to start for a bettor who feels a bet has stopped being a choice. The page does not embellish. It states the numbers and moves on.

The Problem Gambling Levy

TAB NZ pays a Problem Gambling Levy of 0.74% under the Racing Industry Act 2020, set from 1 July 2025 to 30 June 2028. The levy funds harm-minimisation services. It is not a per-bet cost on the bettor; it is part of how the lawful New Zealand market pays for the help available to the reader.

Offshore brands and the absence of New Zealand harm-minimisation

Offshore brands listed below do not reach a New Zealand harm-minimisation framework. Their own tools exist where they exist. A New Zealand bettor using one has no Department of Internal Affairs complaints route, no Gambling Helpline link inside the brand’s own app and no recourse through Safer Gambling Aotearoa. Some of these brands run on licences that do not require them to participate in any harm-minimisation regime at all. The page states this once and refers back to it later rather than threading the caveat through every operator review.

The Arithmetic of Arbitrage and Why It Cannot Be Run Here

What arbitrage betting is

An arbitrage opportunity exists when the odds cover all mutually exclusive outcomes of an event and their implied probabilities add up to less than 1. Where that condition holds, a bettor who places a stake on every outcome at the prices on offer locks in a return above the total outlay. Whichever way the event finishes, one of the bets wins, and the combined payout exceeds the combined stake. The mechanism is arithmetic, not forecasting. It does not need the bettor to know who wins.

The usual source of the discrepancy is different opinions at different bookmakers. One firm thinks the home side is at 1.90, the other thinks the away side is at 1.95, the draw is at 4.20 somewhere else. The implied probabilities do not sum to 1.00. The bettor who can place all three legs collects.

The 2012 study on arbitrage returns

A 2012 study by Franck, Verbeek and Nuesch found that 98% of arbitrage opportunities return less than 1.2%. The page takes that as the headline. Where the arbitrage exists at all, the edge is small in percentage terms. To make that small percentage worth the work, the bettor has to stake more than a small amount. Large sums, then, are not an accident of arbitrage; they are the technique’s response to its own edge. The reader who thinks of arbitrage as a way to make money on a small bankroll is thinking of a different activity.

Why the arithmetic collapses in a one-firm market

A two-way market at decimal odds of 1.90 and 1.90 is a useful worked example because the numbers are round. The implied probability of each outcome is 1 ÷ 1.90, which is approximately 0.5263. Two such outcomes sum to 1.0526, which is above 1. There is no arbitrage in 1.90 / 1.90 — the bookmaker keeps a margin. To get an arbitrage, the two prices have to drift apart far enough that their implied probabilities sum below 1. The arithmetic of the margin, in plain language, is what the next subsection shows.

The margin of a two-way market at 1.90 / 1.90

The payout share of a market with two outcomes at odds o₁ and o₂ is 1 ÷ (1/o₁ + 1/o₂). For 1.90 and 1.90 that gives 1 ÷ (0.5263 + 0.5263), which is 1 ÷ 1.0526, or approximately 0.950. The margin is 1 minus the payout share, which is approximately 0.050, or 5.0%.

The page states the result as a band rather than a single figure because the prices on a real two-way market move. A 5% margin is the centre of a band that runs from roughly 4.5% on a competitive football 1X2 to roughly 7.5% on a smaller event with fewer bookmakers quoting. Where a New Zealand reader is using TAB NZ alone, the firm is the only quoted price on the event and the bettor sees what TAB NZ sets. That is not arbitrage; that is taking a single price from a single firm.

What the margin costs the reader in a real betting week

The 5% margin on a $1,000 turnover across a week of two-way bets returns $950 in expected payout. The expected loss to the bookmaker’s margin is $50. A bettor who treats the bookmaker as a flat-cost utility is treating a 5% drag as a service fee. A bettor who looks for a genuine edge is asking the 5% to be overcome by skill, information or timing, because every dollar of edge in forecasting has to clear that margin before it becomes a dollar of profit.

Arbitrage replaces forecasting with arithmetic, but the arithmetic still has to clear the margin, and the margin is what remains after the bettor has covered every outcome. Where the arbitrage exists, the difference between the sum of the implied probabilities and 1 is the bettor’s edge. The page’s worked 1.90/1.90 example has no edge; the prices might have to move to roughly 2.05 and 1.95 to start paying arbitrageurs. Real markets on real events shift around that line for short windows.

Crypto, Anonymity and What the Operator’s Terms Actually Do

Crypto betting in a New Zealand context

A reader searching for “arbitrage betting crypto” or “bitcoin arbitrage betting opportunities” is usually asking how to settle bets in a currency the operator does not directly hold. Several offshore brands below accept cryptocurrencies. New Zealand law does not state a rule on crypto use for betting accounts, and the Department of Internal Affairs does not run a payment-blocking order. What the law does state is that an offshore bookmaker taking sports or racing bets from a person in New Zealand is breaking section 74AAA regardless of the payment method.

The crypto question is secondary. Even a fully anonymous crypto-funded account at a Curaçao-licensed brand is still an account at an offshore brand serving a New Zealand bettor, which is still the conduct section 74AAA prohibits on the operator side. New Zealand law targets the operator. A reader who uses crypto on an offshore brand is using a payment rail that the operator chooses; the legal position is the same.

What the operator’s own terms say about crypto

Where a brand accepts crypto, the brand’s own terms govern the exchange, the confirmation count, the withdrawal ceiling and the on-chain fee the brand charges. The page does not catalogue those terms brand by brand; each operator review below says what research found about the brand’s crypto practice, where the brand states one.

Pseudonymous accounts and identity verification

TAB NZ accounts need a verified New Zealand address and ID. A bettor who wants to remain pseudonymous cannot open a TAB NZ account. Offshore brands vary: some run full KYC at withdrawal, some run KYC at deposit, some run no KYC at all until a withdrawal triggers a review. A New Zealand bettor who values pseudonymity is, by definition, looking at offshore brands, and the cost of that choice is the loss of every New Zealand protection the lawful market provides.

Strategy, Forecasts and the Limits of Tipsters

Arbitrage tips and the “sure bet” trap

Search traffic for “arbitrage bet today” and “arbitrage betting tips today” arrives looking for tips. The arithmetic has no tips. There is no prediction that produces arbitrage; the opportunity is in the prices, and the prices move. A tipster who promises arbitrage tips today is selling a feed of stale or wrong prices. The page says this plainly because it is the easiest thing on this subject to be misled about.

Statistical arbitrage and the bankroll problem

Statistical arbitrage sports betting is the cousin of pure arbitrage: it bets on mispricings detected by a model, not by chance alignment of two bookmakers. It is also a model-driven activity and depends on a large volume of bets to make the small edge visible. A New Zealand bettor with one lawful bookmaker has no volume. The volume problem is not solvable with a sharper model; it is solvable with more firms quoting the same event, and section 74AAA closes that route.

Why the bankroll requirement is the limiting factor

The 1.2% headline from the 2012 study is a return figure on the stake, not on the time. To produce a useful weekly income from a 1.2% edge requires a stake that 1.2% of is a useful weekly income. That arithmetic is straightforward and unkind. A bettor who wants $200 a week from 1.2% edges needs a working bankroll of roughly $16,667 per simultaneous position, assuming the bets clear in a week. That figure scales linearly with the income target and is the single most important cost the technique asks of the bettor. Few retail bettors have that figure sitting in a betting account.

Bookmakers and the detection problem

Bookmakers usually detect arbitrage betting quickly and view it unfavourably. Maximum wager limits on such accounts often drop sharply, and in the past half of an arbitrage bet was cancelled or the account closed. A reader who runs the technique across several firms on a quiet line accumulates many account closures. The legal cost in New Zealand is on the operator; the account-level cost on the bettor is the practical cost the page returns to in the operator reviews.

Bet Types, Odds Formats and How the Reader Reads a Price

Decimal, American and fractional

BillyBets offers bettors three odds formats: Decimal (2.00), American (+100) and Fractional (1/1). The page does not compare the formats; it says what each looks like at the same fair price. Decimal is the form the rest of the page uses because decimal is what the arithmetic takes. American odds of +100 are decimal odds of 2.00. Fractional odds of 1/1 are decimal odds of 2.00. All three describe the same fair coin flip, and the bookmaker’s margin shows in all three at once.

What the margin looks like at a $2.00 line

A fair coin at 2.00 / 2.00 has an implied probability on each side of 0.50, a payout share of 1.00 and a margin of 0%. A bookmaker’s 1.90 / 1.90 line at the same event has an implied probability on each side of 0.5263, a payout share of 0.950 and a margin of 5.0%. The 10 cents on the dollar is what the bookmaker keeps on a fair event. That is the unit the reader needs to see in any price.

Selection: choosing which leg to bet on

In a two-way arbitrage the bettor chooses both legs. The skill is not picking the winner; the skill is finding a price pair that sums below 1 in implied probability. The technique uses no forecasting model. Beyond price-passing software, there is no decision. The reader who wants a strategy on selection is asking the wrong question.

Staking: how the stake splits between legs

For a two-way arbitrage at odds o₁ and o₂ on a total stake T, the stake on outcome 1 is T × o₂ ÷ (o₁ + o₂) and the stake on outcome 2 is T × o₁ ÷ (o₁ + o₂). Both stakes are placed at different bookmakers. Both stakes are lost if the event is voided. The arithmetic is exact; the real-world difficulty is that one bookmaker may void a leg while the other settles, leaving the bettor with a position that is no longer an arbitrage. That risk is the operational cost the technique carries.

Settling: what happens when one leg is void

Several offshore operators reserve the right to void bets in defined circumstances, including palpably wrong prices and arbitrage-style betting. Where one leg is voided and the other settles, the bettor holds a single-sided position and is exposed to a one-way outcome. The original arbitrage is gone. The exposure is the difference between a guaranteed profit and a single bet on one firm. That difference is not theoretical; it is the operational cost bookmakers impose on detected arbitrage.

Comparing the Operators a New Zealand Bettor Meets

The landscape of the comparison

The table below lists the ten operators in the comparison. Two of them are TAB NZ brands. Eight are not licensed in New Zealand. The table states each brand’s New Zealand status plainly and notes what each operator’s own terms say about a feature that touches the comparison: their odds formats, live-betting coverage, features such as cash-out or boosted odds, and the licence the brand holds outside New Zealand. A reader who only looks at one column misses the column that explains why the rest of the table is what it is. The two TAB NZ brands sit at the top because they are the only lawful option; the eight offshore brands are listed because New Zealand bettors meet them. The table is a landscape, not a recommendation.

Eight offshore brands in this list do not hold a licence that applies in New Zealand. Only two operators in the table are lawfully permitted to offer sports and racing bets to people in New Zealand. This clear distinction is central to understanding the regulatory landscape.

What the table does not say

The table does not say that any offshore brand is recommended. The page does not recommend offshore brands. It lists them because New Zealand readers meet them, in advertising, in tipster feeds, in social channels. The page describes what each operator’s own terms state; the reader’s job is to weigh the absence of a New Zealand licence against the price the brand offers. The Department of Internal Affairs’s warning — that operators in jurisdictions with minimal consumer safeguards may not return unspent credits and may not pay out large wins — applies to every row that says “Not licensed in New Zealand”.

What Arbitrage Betting Costs the Reader

The legal cost

Section 74AAA targets the operator. The reader who bets at an offshore brand is not at risk of a conviction under section 19(4) of the Gambling Act 2003. The reader is at risk of the operator not paying out, of the operator voiding a winning leg and of the operator closing the account. Those risks sit on the player side because there is no New Zealand complaints route to enforce a foreign licence.

The operational cost

The detection cost is real. Bookmakers detect arbitrage quickly and limit or close accounts. The page returns to this point below in the operator reviews because each review is the place a reader chooses whether to keep an account at all.

The bankroll cost

A 1.2% edge requires a working bankroll in the tens of thousands per position to produce a meaningful weekly return. That is a cost the technique asks of the bettor regardless of the legal frame.

The opportunity cost

Time spent scanning for arbitrage is time not spent on a single-firm value bet at TAB NZ. The arithmetic does not say which is better for the reader; the page only says both have a cost. A reader who does not have the bankroll for arbitrage does not have an arbitrage opportunity, and the time is better spent on a smaller-stake single-firm approach with a clear deposit limit.

The price the law puts on the technique

Section 74AAA puts the price of the technique at the price of doing it offshore. The lawful New Zealand market has no price for arbitrage at all because the lawful New Zealand market is a single firm. The page does not say “do not do arbitrage in New Zealand”. It says the price of doing it is the price of being at an offshore bookmaker, which the next section walks through.

The Ten Operators in the Comparison

TAB — the lawful option at the top of the table

TAB is one of the two online brands of TAB NZ, the only provider lawfully offering racing and sports betting to people in New Zealand under section 74AAA of the Racing Industry Act 2020, in force since 28 June 2025. The product is fixed-odds and tote betting across racing codes (thoroughbred, harness and greyhound until the phase-out begins on 1 August 2026) and a sportsbook on the major codes a New Zealand punter follows: rugby, league, cricket, football, basketball, tennis and others. Live betting is listed in the app. Safer-gambling tools — deposit limits, time-outs and self-exclusion — sit in the app. The free Gambling Helpline 0800 654 655 and text line 8006 are listed in the app for anyone who needs them.

TAB’s TAB NZ betting app was first released on 8 September 2014 and is published under the seller name New Zealand Racing Board. The product has matured under the Entain partnership into a modern app with boosted odds, same-game multis and the bettor-friendly terms the partnership brought in.

The bettor who runs a TAB-only staking plan pays TAB’s margin on every bet. The page’s worked 1.90/1.90 example shows the shape: roughly 5% of turnover is the bookmaker’s edge on a competitive two-way market. The bettor who treats TAB as a flat-cost utility is treating 5% as a service fee. The bettor who looks for an edge in forecasting is asking the 5% to be cleared by skill. The verdict on TAB is the verdict on the lawful New Zealand market: it is the only place a New Zealand reader can bet lawfully, and that is its single defining feature. The price the law puts on arbitrage is paid by every reader who will otherwise use TAB.

Betcha — the second TAB NZ brand

Betcha is one of the two online brands of TAB NZ, the same lawful provider, the same product under the hood. The brand adds a daily Toolbox with odds boosts and insurance tools for bets that do not land, a Bet Social section where punters chat, follow tipsters and share bets or pools, and a Playbook with tips and match analysis. The features are a marketing layer over the same single underlying bookmaker.

A reader who opens Betcha alongside TAB is opening two front doors to the same building. The cost of doing this is double the cognitive overhead — two apps to learn, two bet slips to track — for no diversification of bookmaker. The verdict on Betcha is that it is a TAB NZ brand with a louder social layer, not a rival bookmaker.

Glorion — not licensed in New Zealand

Glorion support is available by Live Chat or by email, and the site accepts customers over 18 years of age only. The brand names no licence that applies in New Zealand. An account at Glorion is an account at an offshore brand serving a New Zealand resident, which is the conduct section 74AAA prohibits on the operator side. The brand’s safer-gambling tools are whatever the operator’s own terms provide; the New Zealand Gambling Helpline is not linked inside the brand’s site.

The verdict on Glorion is that it is one of several offshore brands a New Zealand reader meets, and the price of using it is the absence of every New Zealand protection the lawful market provides. The page does not recommend it.

BillyBets — not licensed in New Zealand

BillyBets offers bettors three odds formats: Decimal (2.00), American (+100) and Fractional (1/1). The brand includes cashback and reload bonuses on sports, a coin shop where coins collected by depositing, betting, tournaments and challenges can be exchanged for free bets and free spins, and a VIP programme with five levels. The brand names no licence that applies in New Zealand.

The price of the bonuses is the wagering attached to them. The page does not catalogue the wagering brand by brand because the wagering terms at each offshore brand are operator-defined and the reader has to read them on the brand’s own terms page before claiming. The wagering is the cost the marketing term “bonus” hides. The verdict on BillyBets is that the brand markets extensively on bonuses and the reader has to clear the wagering to extract value, which is the same arithmetic the lawful TAB NZ market does not require of its bonus bet products.

Roobet — not licensed in New Zealand

Roobet is a brand name of Raw Entertainment B.V., registration number 157205, Korporaalweg 10, Curacao, licensed under Curaçao licence OGL/2024/687/0427. A Curaçao licence gives no right to take bets from people in New Zealand. The brand is one of several that have built a reputation around crypto deposits and a casino-heavy product; the brand’s sportsbook is part of the product but not the centre.

The verdict on Roobet is that it is a Curaçao-licensed brand with a crypto-friendly product and no New Zealand licence. A New Zealand reader at Roobet is using an offshore brand with all the costs that entails and none of the New Zealand protections. The page does not recommend it.

22Bet — not licensed in New Zealand

22Bet takes single bets, accumulators, systems and chains, and offers live betting with real-time odds and score updates. The brand names a Curaçao licence (8048/JAZ) held by TechSolutions Group N.V., which gives no right to take bets from people in New Zealand. The brand has been a fixture on the offshore scene for several years and the page does not catalogue its age or its product breadth because the price of using it is the same as the price of using any other offshore brand serving a New Zealand bettor.

The verdict on 22Bet is that it is a Curaçao-licensed offshore bookmaker with a deep product. A New Zealand reader is paying the same cost in absent protections as at every other offshore brand in the comparison.

Rabona — not licensed in New Zealand

Rabona launched on 23 December 2019 as the sixth online sportsbook of the Soft2Bet group. The brand names a Curaçao licence, which gives no right to take bets from people in New Zealand. The brand’s product is a full sportsbook with casino attached; the page notes the brand’s age and group membership because a brand that has been operating since 2019 has a track record that a brand launched last year does not.

The verdict on Rabona is that it is a Soft2Bet-group bookmaker with several years of operating history and a Curaçao licence. The cost to a New Zealand reader is the same as the cost at every other offshore brand in the comparison.

Golden Panda — not licensed in New Zealand

Golden Panda publishes dedicated Sports Terms and Conditions that cover fixed-odds betting, Combo Bets, the Bet Builder feature, live scoreboards and broadcasts, and stake and odds limits. The brand names no licence that applies in New Zealand. The brand’s product layout is what several offshore brands have adopted — a sportsbook with a casino underneath — and the dedicated Sports Terms page is the right place for a reader to look before betting.

The verdict on Golden Panda is that it is an offshore brand with published sports terms, which is what a careful reader looks for in any operator. The absence of a New Zealand licence is the cost.

BetNinja — not licensed in New Zealand

BetNinja states that it is licensed to conduct online gaming operations by the Union of the Comoros. A Comoros licence gives no right to take bets from people in New Zealand. The Comoros licence is a small-jurisdiction licence with limited consumer safeguards in its own jurisdiction and none in New Zealand. The page notes the licence because the reader who scans the brand’s own terms sees “Comoros” and may not know what that means; the page explains.

The verdict on BetNinja is that it is a Comoros-licensed offshore brand. The cost is the absence of any New Zealand protection.

FunBet — not licensed in New Zealand

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’s rugby coverage is the feature a New Zealand reader notices first because Super Rugby Pacific and the All Blacks are major events; the brand’s other markets are the standard offshore offering.

The verdict on FunBet is that it is an offshore brand with broad sport coverage and no New Zealand licence.

The Lawful New Zealand Market and What It Offers the Arbitrage Reader

What a single-firm market looks like

A single-firm market has no arbitrage because there is only one price. A bettor at TAB NZ sees TAB’s prices, takes them or leaves them. The bookmaker’s margin is what it is — roughly 5% on a competitive two-way market in the page’s worked arithmetic — and the bettor clears the margin through forecasting or does not. There is no second firm to arbitrage against.

What a single-firm market does well

TAB NZ’s product has matured under the Entain partnership. Same-game multis, boosted odds, in-play markets and the safer-gambling tools the app provides are the features the partnership brought in. A bettor who uses TAB NZ’s product gets a New Zealand-regulated product with a New Zealand complaints route and a New Zealand harm-minimisation framework.

What a single-firm market does not do

It does not offer arbitrage. The technique requires several firms quoting different prices on the same event; the lawful New Zealand market has one firm. A reader who wants arbitrage has to leave the lawful market. The price of leaving is the price the next subsection catalogues.

The Cost of Doing Arbitrage in an Offshore Market

The detection cost

Bookmakers usually detect arbitrage betting quickly and view it unfavourably. Maximum wager limits on such accounts often drop sharply, and in the past half of an arbitrage bet was cancelled or the account closed. The detection cost compounds across several firms: a bettor detected at three bookmakers is a bettor with three closed accounts.

The voiding cost

Several offshore operators reserve the right to void bets in defined circumstances, including palpably wrong prices and arbitrage-style betting. Where one leg is voided and the other settles, the bettor holds a single-sided position and is exposed to a one-way outcome. The voiding cost is the difference between a guaranteed small profit and an exposed single bet.

The payout cost

The Department of Internal Affairs warns that overseas operators may be in jurisdictions with minimal consumer safeguards, may not return unspent credits and may not pay out large wins. The payout cost is the risk that a winning bet is not paid. A New Zealand bettor has no New Zealand route to enforce a foreign licence.

The bankroll cost revisited

The 1.2% edge from the 2012 study requires a working bankroll in the tens of thousands per position to produce a meaningful weekly return. The bankroll cost compounds with the detection cost: a bettor who loses three of ten accounts in the first month has lost the ability to spread that bankroll across ten firms. The arbitrage window narrows, and the bankroll sits at fewer firms doing more work.

The cognitive cost

Scanning for arbitrage across ten firms is a job. Maintaining ten accounts, watching for voided bets, watching for stake limits, watching for closed accounts and reconciling positions across ten apps is another job. The cognitive cost is not in the marketing for a frozen two-bookmaker arbitrage scheme.

What an Arbitrage Reader Does in New Zealand

The honest framing

A reader in New Zealand who wants to run arbitrage has to decide whether the price is worth paying. The price is leaving the lawful market, opening accounts at offshore brands and accepting the detection, voiding, payout and bankroll costs the technique carries. The Department of Internal Affairs does not criminalise the player; it warns the player; the operator carries the legal exposure.

The single-firm alternative

A reader who does not want to pay the price runs a single-firm staking plan at TAB NZ. The bookmaker’s margin is the cost; the New Zealand protections are the upside. The 5% margin on the page’s worked example is the centre of a band; a bettor who finds value at TAB NZ’s prices can clear it with skill. The single-firm alternative does not promise arbitrage, and a reader who arrives looking for arbitrage and stays for value betting has done something the technique’s marketing does not promise.

The decision that belongs to the reader

The page does not make the decision. It catalogues the law, the arithmetic, the operator set and the costs, and leaves the decision to the reader. The reader who decides that the lawful New Zealand market is the right place to bet has chosen the safer, regulator-backed path. The reader who decides that arbitrage’s edge is worth the offshore cost has accepted the costs the page has catalogued. Both decisions are the reader’s.

Frequently Asked Questions

Does sports arbitrage betting work?

Yes, in markets where several bookmakers quote different prices on the same event. The arithmetic locks in a return above the total outlay regardless of the outcome. In New Zealand the lawful market has one firm quoting prices — TAB NZ — and there is no second firm to arbitrage against. A New Zealand reader who runs the technique offshore is using offshore brands, which is the conduct section 74AAA prohibits on the operator side. The technique works arithmetically; it does not work legally inside the New Zealand lawful market.

How to arbitrage bet?

Find a two-way market where the two prices imply probabilities that sum below 1. Place a stake on each outcome at the prices on offer, splitting the total stake between the two legs. Whichever way the event finishes, one bet wins and the combined payout exceeds the combined stake. The arithmetic is exact; the operational difficulty is that one bookmaker may void a leg while the other settles, leaving the bettor exposed. In New Zealand there is only one lawful bookmaker quoting prices, so the technique requires offshore brands.

How to do arbitrage betting in practice?

Open accounts at several offshore bookmakers quoting the same events. Use a price-scanning service to find markets where the implied probabilities on all outcomes sum below 1. Place the calculated stakes on each outcome at each firm. Reconcile positions as events settle and watch for stake limits, voided legs and account closures. The bankroll needed to produce a useful return from a 1.2% edge is in the tens of thousands per position. Bookmakers detect the technique quickly and limit or close accounts. None of this is possible inside the lawful New Zealand market, which is a single firm.

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

TAB NZ and its online sister brand Betcha. Section 74AAA of the Racing Industry Act 2020, inserted by the Racing Industry Amendment Act 2025 and in force since 28 June 2025, makes TAB NZ the only provider lawfully allowed to take online sports and racing bets from people in New Zealand. There is no licence register for betting in New Zealand because there is only one lawful provider. The Department of Internal Affairs told unlicensed providers to withdraw with immediate effect.

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

Return is stake multiplied by decimal odds. Net profit on a winning single is stake multiplied by (odds minus 1). A stake of $10 at odds 1.90 returns $19 and nets $9. For a combination bet — a multi whose legs come from different events — the odds of the legs multiply into one price. A two-leg multi at 1.50 and 2.00 has combined odds of 3.00; a $10 stake returns $30 and nets $20 if both legs win. The arithmetic is the same in any currency.

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

The margin is what the bookmaker keeps of every unit bet on a market. It is the difference between 1 and the payout share, where the payout share is 1 divided by the sum of the implied probabilities. A two-way market at 1.90 and 1.90 has implied probabilities of 0.5263 on each side, summing to 1.0526. The payout share is 1 divided by 1.0526, which is 0.950. The margin is 1 minus 0.950, which is 0.050, or 5.0%. The 5% is the bookmaker’s edge on a fair event. A bettor who wants an edge has to clear the 5% with forecasting or with a price discrepancy across firms.

Written by the editors at Kiwibettingsites.