Sure Bets of the Day: How to See Real Arbs in Australia

By the AUOdds team · Updated 5 Oct 2026 · 7 min read

Sure bets of the day are not tips, and they are not predictions. A genuine surebet is a price gap. Two or three licensed Australian bookmakers disagree enough on one event that backing every outcome at their prices locks in a return at the prices shown. Search for sure bets today and you mostly find racing tips, 'sure win' tipsters, or global finders with empty pages and no Australian bookmaker coverage. This guide shows what real locks look like, with worked stakes. It also covers how long they tend to last and how to read a live odds board. For scale, AUOdds data shows 497 locks across 9 Australian bookmakers in the last 30 days, with a typical lock of around 2.4%. Everything here is pre-match.

What are sure bets of the day, really?

A sure bet, or surebet, is a set of bets on every outcome of one event, placed with different bookmakers. The combined prices pay back more than the total stake whichever outcome wins. Nothing about it depends on picking a winner. It exists because bookmakers set and move their own prices, and for a short time one of them may rate a team or player differently from the rest of the market.

The test is simple maths. Turn each price into an implied probability by dividing 1 by the decimal odds. Then add up the best price for each outcome. If the total is under 1 (under 100%), there is a lock. The amount below 1 is roughly your margin.

That is why a tipster's 'sure bet of the day' is a different product. A tip is one opinion on one outcome, and it can lose. A lock covers every outcome, so the result of the match doesn't decide whether you come out ahead at the prices shown. What decides it is whether you get every leg on, at those prices, at the stakes you planned.

A real surebet always has these features:

• Every possible outcome of the market is covered, including the draw where one exists
• Each leg sits with a licensed Australian bookmaker, usually a different one for each outcome
• The market is pre-match, and each bookmaker settles it under its own rules
• Stakes are split so each outcome returns about the same amount

If a page offers one selection and calls it 'sure', it is a tip with a confident label. Treat it that way.

Why do most sure bets today searches turn up tips or empty pages?

Search results for sure bets today mostly fall into two groups. The first is tipster content: racing selections, 'sure win' football picks and multi suggestions. These are opinions, and the word 'sure' is marketing.

The second group is global arbitrage finders. They scan bookmakers in Europe, Asia and elsewhere, and they can be useful if you hold accounts with those operators. For an Australian punter they often come up short. Many list few or no Australian bookmakers, so the arbitrage betting opportunities they show involve operators you shouldn't be using here. Some show no surebets available at all when you look, which says more about their coverage and timing than about whether gaps exist.

A useful surebet Australia search needs something narrower: prices from bookmakers licensed in Australia, refreshed often, with stakes worked out for the exact prices on screen. ACMA lets you check whether a gambling operator is legal, and it is worth checking any unfamiliar name before you open an account.

Coverage matters because a lock usually depends on one bookmaker being out of line with the rest. The more Australian bookmakers a board watches, the more chances it has to spot that outlier. Freshness matters because a price that was right two minutes ago may already be gone.

Before trusting any 'today' page, ask:

• Which bookmakers does it actually cover, and are they licensed in Australia?
• How old are the prices it shows?
• Does it give a stake for every outcome, or just a selection?
• Does it include in-play markets? If so, they aren't for Australian online punters.

What does a real surebet in Australia look like?

Here are two illustrative pre-match locks, anonymised and in the shape these usually take. Bookmaker names are replaced with letters.

Example 1: tennis head-to-head (two outcomes)

• Player 1 at Bookmaker A: 2.08
• Player 2 at Bookmaker B: 2.02

Implied probabilities: 1 ÷ 2.08 = 0.4808 and 1 ÷ 2.02 = 0.4950. The total is 0.9758, so the gap is about 2.5%.

With $500 in total:

• Stake $246.34 on Player 1 at 2.08, returning $512.39
• Stake $253.66 on Player 2 at 2.02, returning $512.39

Either way you get back about $512.39, which is $12.39 ahead at the prices shown. If you round to $246 and $254, the return becomes $511.68 or $513.08. That is slightly uneven, but both sides stay ahead.

Example 2: soccer match result (three outcomes)

• Home at Bookmaker A: 2.60
• Draw at Bookmaker B: 3.60
• Away at Bookmaker C: 3.10

The total implied probability is 0.3846 + 0.2778 + 0.3226 = 0.9850, a gap of about 1.5%. With $300 in total, you would stake $117.14 on home, $84.60 on the draw and $98.25 on away. Each outcome returns about $304.56, or roughly $4.56 ahead.

Two things stand out. First, margins are thin: a few dollars on a few hundred staked. Second, the stake split is everything. If you get it wrong by a few dollars, or miss a leg entirely, the lock becomes an ordinary bet. That is why the stake for each outcome matters more than the alert itself.

How long does the best surebet today usually last?

The best surebet today is often gone quickly. A lock exists because one price is out of step, and bookmakers adjust prices as money comes in and as they watch the wider market. Once the outlier moves, the gap closes.

Don't expect a fixed timeframe. Some locks hold for a while on quieter markets. Others close within minutes, or before you've finished placing the second leg. There is no reliable rule for which will be which, so plan as if every lock is short-lived.

This is why price age matters. AUOdds data puts typical price age at about 10 seconds, across roughly 15,000 prices tracked at any moment. Even so, ten seconds is not zero. Always confirm the price on the bookmaker's own bet slip before you place the bet.

Volume also changes from week to week. In the same data there were 361 locks in the last 7 days, against 497 across the last 30 days, so activity comes in bursts rather than at a steady rate. A quiet day isn't a sign the approach has stopped working. A busy week isn't a promise of more.

These habits help:

• Have accounts funded and logged in before a lock appears
• Place the outlier price first, since it is usually the one most likely to move
• If a price has changed, recalculate the remaining stakes before placing the next leg
• Set a personal floor, such as skipping any lock that drops under 1%

How does a live odds board show arbitrage betting opportunities?

A live odds board is a table of current pre-match prices. It has one row per event, one column per bookmaker, and the best price for each outcome highlighted. When the best prices across all outcomes add up to less than 100% implied, the row is flagged as a lock.

For each lock, a useful board shows:

• The event, market and start time
• The best price for each outcome and which bookmaker offers it
• The combined implied percentage and the lock percentage
• The stake for each leg for your chosen total
• How old each price is

On AUOdds, members get alerts for locks across 9 Australian bookmakers, with the exact stake for each outcome. That means the maths in the examples above is done for you. You still check and place every bet yourself, at each bookmaker.

Reading the board well is mostly about filtering. A 0.4% lock on a market that starts in three minutes is rarely worth chasing. A lock of 2% to 3% with an hour to go gives you time to check each leg properly. The typical lock over the last 30 days sat around 2.4%, which is a sensible benchmark. Anything far above it deserves a second look. It may be a data error, a different market definition, or a settlement rule that doesn't match between bookmakers.

Every lock on the board should be pre-match. Online in-play sports betting isn't offered to Australians. A finder showing live in-play arbs is showing you bets you shouldn't be placing online.

What can go wrong, and how do you check a lock before staking?

A lock locks in a return at the prices shown. It does not lock in the prices themselves. These are the common problems:

• Prices move. The second leg can change between the alert and the bet slip, shrinking or erasing the gap.
• Stakes get limited. A bookmaker may accept less than you asked for, which leaves the legs out of balance.
• Bets can be voided. Settlement terms for events such as a retirement or an abandonment may not match across bookmakers, so read each one's rules.
• Mistakes happen. It is easy to pick the wrong selection or market, or to mistype a stake.

Run through this quick checklist before you place anything:

• Is each bookmaker licensed in Australia? ACMA's operator check helps.
• Is it the same market at each bookmaker, for example full-time result rather than including extra time?
• Have you read each bookmaker's settlement rules for that market?
• Does the price on each bet slip match the alert?
• Is there enough money in each account?

On tax, the ATO's guidance is that winnings from gambling are generally not assessable for people who aren't carrying on a betting business. Circumstances vary, so read the ATO material or speak to an adviser if you bet at scale.

A reminder: gambling is for people 18 and over. Set a budget you can afford to lose, because losses happen when things go wrong. If you want a break, BetStop, the National Self-Exclusion Register, lets you exclude yourself from all licensed online and phone wagering providers in Australia. Gambling Help Online offers free, confidential support.

Frequently asked questions

Sources

1. Check if a gambling operator is legal, Australian Communications and Media Authority
2. Taxation Ruling IT 2655: gambling and betting winnings, Australian Taxation Office
3. Crypto asset prizes and gambling winnings, Australian Taxation Office
4. BetStop, Australian Government
5. BetStop: the National Self-Exclusion Register, Australian Communications and Media Authority

More guides

• Dutching Calculator Australia: Racing Stakes Worked Out
• Arbitrage Betting App Australia: Alerts on Your Phone
• How Much Can You Make Arbitrage Betting in Australia?
• Arbitrage Betting Calculator: How to Work Out Each Stake

18+ only. Betting involves risk, and prices and limits can change before you place a bet. If gambling isn't fun any more, Gambling Help Online (1800 858 858) is free and confidential, and BetStop lets you exclude yourself from every licensed Australian bookmaker.