Arbitrage Betting Strategy PDF: A Printable One-Page Checklist for Every Lock
- Most failed locks come from mismatched markets or settlement rules, not bad prices, so confirm both legs settle as true opposites before staking.
- Check each price and the accepted stake on the bookmaker's own bet slip, because an alert is only a snapshot.
- Place the shorter-priced leg first, since it carries the bigger stake and is the most likely to be limited.
- Recalculate the second leg from what was actually matched, and log every lock straight away.
- Keep responsible gambling contacts on the same printed page as your checklist.
An arbitrage betting strategy PDF should be something you can use the moment an alert arrives, not a 40-page academic paper. Search for one and you'll mostly find research papers and uploaded documents about market efficiency. They're interesting, but they don't help when you've got two bet slips open and a price about to move. This guide is the practical alternative. It's a six-step checklist: match the market and rules, confirm the price, place the shorter-priced leg first, recalculate, log the bet and keep responsible gambling contacts close. Each step is explained with Australian examples and decimal odds. The steps are then condensed into a single page you can print or save as a PDF. The checklist won't make locks bigger. It's designed to stop the small, avoidable mistakes that cost more than most locks return.
- What should an arbitrage betting strategy PDF actually include?
- How do you confirm both legs are the same market and rules?
- How do you check the price is still there before staking?
- Why place the shorter-priced leg first, and what if the second price moves?
- What should you log after every lock?
- How do you turn this arb betting guide into a printable one-page PDF?
What should an arbitrage betting strategy PDF actually include?
Most results for an arbitrage betting strategy PDF are academic papers and uploaded documents. They explain why mispriced markets exist. That's interesting, but it doesn't help when an alert lands and you have a minute to act.
A useful arbitrage betting guide for your desk is different. It's a sequence you follow the same way every time, so the boring mistakes don't happen. Those mistakes cost more than missed locks.
The checklist in this guide has six steps:
- Confirm both legs are the same event, market and settlement rules.
- Check each price is still available at the stake you need.
- Place the shorter-priced (larger stake) leg first.
- Recalculate the second leg from what actually got matched.
- Log the bet straight away.
- Keep responsible gambling contacts on the same page.
Why be so rigid? Because locks are small. AUOdds data shows a typical lock of about 1.5% over the last 30 days, across 3,713 locks found at 9 bookmakers. On a $500 outlay, 1.5% is about $7.50. One wrong market, one mistyped stake or one void leg can wipe out the return from many locks.
That's the real point of a printable sheet. It slows you down for ten seconds in the places that matter and lets you move quickly everywhere else. A lock only locks in a return at the prices shown, and only if both legs stand as placed.
Before anything else, only use bookmakers licensed in Australia. The ACMA has guidance on checking whether a gambling operator is legal (ACMA-LEGAL). It's worth a look before you open any new account.
How do you confirm both legs are the same market and rules?
Most failed locks aren't price problems. They're matching problems: two bets that look like opposites but don't settle as opposites.
Run through these checks before you stake a cent:
- Same event. Check the teams, competition, date and start time. Similar team names in different leagues catch people out.
- Same market. Check it's head to head on both sides, not head to head against line. Also check the totals match: a total of 41.5 on one side and 42.5 on the other leaves a gap where both legs lose.
- Two-way or three-way. In soccer, a head-to-head market usually includes the draw. If one book's market includes the draw and the other's doesn't, you don't have a lock.
- Same settlement rules. Some markets settle on full time, while others include extra time or overtime. Check what happens if a tennis player retires injured or a match is abandoned.
- Same void conditions. If one leg can be voided while the other stands, you're carrying an open bet.
Each bookmaker publishes its own rules, and they aren't identical, so don't assume. If you can't find the rule for a market within a minute, skip the lock. Another one will come along.
A quick habit helps: read the market name aloud on both screens before you touch the stake box. You might see 'Over 172.5 total points, including overtime' on one screen and 'Under 172.5 total points, including overtime' on the other. If the words don't match, the bets don't either.
For racing, check how each bookmaker handles dead heats and scratchings on fixed-odds win markets. A late scratching can change what a lock is worth.
How do you check the price is still there before staking?
An alert is a snapshot. AUOdds tracks about 15,000 prices at any moment, typically about 10 seconds old, but bookmakers move prices constantly. By the time you've logged in, that 2.75 may have become 2.60.
So the second step is simple: confirm each price on the bookmaker's own bet slip, not on the alert.
- Open both bet slips before staking either leg.
- Check the price on each slip matches the alert or is better.
- Enter the stake and check the bookmaker will accept the full amount. Some accounts get offered a reduced maximum.
- Check your balance on both accounts covers the stakes.
- Note the time. If more than a minute or two has passed, recheck everything.
If a price has drifted slightly, the lock may still stand at a smaller margin. Recalculate rather than guess.
The quick test is to add up 1 divided by each price. A total under 1.00 means there's a lock at those prices. A total over 1.00 means it's gone. For example, 1 ÷ 1.62 plus 1 ÷ 2.75 comes to 0.9809, so there's a lock. With 1.62 and 2.60, the total is 1.0019, so there isn't.
Be wary of 'accept price changes' settings. They're handy for normal punting, but on a lock they can let a bet go through at a worse price than you planned. Turn them off, or at least read the confirmation screen before moving on to the next leg.
Why place the shorter-priced leg first, and what if the second price moves?
Once both slips are open and the prices are confirmed, place the shorter-priced leg first. The shorter price always needs the bigger stake, so it's the leg most likely to hit a stake limit or be partly accepted. It's better to find that out before you've committed to the other side.
Worked example (AFL head to head, $500 total):
- Team A is 1.62 with Bookmaker X: 1 ÷ 1.62 = 0.6173.
- Team B is 2.75 with Bookmaker Y: 1 ÷ 2.75 = 0.3636.
- The total is 0.9809, a margin of roughly 1.9% at these prices.
- Stake on A: $500 × 0.6173 ÷ 0.9809 ≈ $315, which returns $510.30.
- Stake on B: $500 × 0.3636 ÷ 0.9809 ≈ $185, which returns $508.75.
The worst case is a return of about $8.75 on a $500 outlay.
Now for the recalculation step. You place $315 on Team A. By the time you get to Bookmaker Y, Team B has shortened to 2.60, and the lock has gone: 0.6173 + 0.3846 = 1.0019.
You now have a choice. To cover the $510.30 return on Team A, you'd need $196.27 on Team B at 2.60 (510.30 ÷ 2.60). Your total outlay becomes $511.27 against a return of $510.30 whichever team wins. That's a loss of about $0.97. The alternative is to leave Team A as an open bet and accept that it may lose $315.
Most arbers take the small known loss. Whatever you choose, decide using fresh numbers, not the ones on the alert.
The same logic applies if Bookmaker X only accepts $200 of your $315. Recalculate Team B's stake from the $200 actually matched: $200 × 1.62 ÷ 2.75 ≈ $118.
What should you log after every lock?
Logging is the step people skip, and it's the one that tells you whether this is working.
Log every lock straight after the second leg is confirmed, while the bet slips are still on screen. A simple spreadsheet works. These columns are worth keeping:
- Date and time placed
- Event, market and line
- Bookmaker, price and stake for each leg
- Expected return and margin
- Any partial acceptance or price change
- Result, actual return and profit or loss
- Notes, such as rule checks, voids or stake limits
Why bother? There are three reasons.
First, a log catches mistakes. If a settled bet doesn't match what you recorded, you can query it with the bookmaker while the details are fresh.
Second, it shows your real numbers. A typical margin of 1.5% looks fine on paper. Your log will also show missed second legs, small losses on recalculated locks and voided bets. That gives you your actual return, not the theoretical one.
Third, it tracks your balances. Money sits across several accounts, and it's easy to lose track of how much you've put in overall. A running total of deposits and withdrawals per bookmaker keeps that clear.
A log is also useful if you ever need to think about tax. The ATO's ruling IT 2655 sets out how it views gambling and betting winnings (ATO-IT2655), and the ATO has a separate page on gambling winnings (ATO-WINNINGS). If your betting starts to look organised and business-like, read both and speak to a registered tax agent rather than assuming.
How do you turn this arb betting guide into a printable one-page PDF?
Here's the whole arb betting guide condensed to fit on one A4 page. Copy it into a document and adjust it to suit you. Then save it as a PDF, or print it and keep it beside your screen.
One-page lock checklist
- 1. Match: same event, market and line, two-way or three-way, and the same settlement and void rules.
- 2. Price: both bet slips open, prices equal to or better than the alert, full stake accepted and balances that cover it.
- 3. First leg: place the shorter price (bigger stake) first, and note the amount actually accepted.
- 4. Recalculate: work out the second-leg stake from the matched amount and the current price. If 1 ÷ price A + 1 ÷ price B is over 1.00, decide using fresh numbers.
- 5. Log: record both legs, prices, stakes, expected return and any changes.
- 6. Check in: check your time, budget and mood. Stop if any of them are off.
Put the stake formula at the bottom of the page. The stake on each leg equals the total outlay × (1 ÷ that leg's price) ÷ (the sum of 1 ÷ each price). A plastic sleeve and a whiteboard marker let you tick steps off and reuse the same sheet.
Remember that locks are still gambling. Prices move, stakes get limited, bets get voided and mistakes happen. Only use money you can afford to lose. You must be 18+ to bet.
If betting stops feeling under control, BetStop, the National Self-Exclusion Register, lets you exclude yourself from licensed Australian online and phone bookmakers (BETSTOP, ACMA-BETSTOP). Gambling Help Online offers free, confidential support at any hour. The Department of Social Services also has further information (DSS-GAMBLING). Print these contacts at the bottom of your page.
Frequently asked questions
Is there a free arbitrage betting strategy PDF I can use?
Yes. The one-page checklist on this page is designed to be copied into a document, then printed or saved as a PDF. It covers matching the market and rules, confirming prices, placing the shorter-priced leg first, recalculating, logging and responsible gambling contacts. Adjust the wording to suit how you work, but keep the order of the steps the same.
Why should I place the shorter-priced leg first?
The shorter price needs the larger stake, so it's the leg most likely to be limited or only partly accepted. If you place it first, you find out exactly what was matched before committing to the other side. You can then recalculate the second leg from the real amount rather than the planned one.
What if the second price moves after I've placed the first leg?
Recalculate straight away with the new price. If 1 divided by each price adds up to more than 1.00, the lock has gone. You can then cover the first leg for a small known loss, or leave it as an open bet. Most arbers prefer the small known loss, but decide using current numbers.
Does a lock remove all risk?
No. A lock locks in a return at the prices shown, but only if both legs stand as placed. Prices can move between legs, stakes can be limited, bets can be voided under different rules, and simple mistakes happen. A consistent checklist reduces these risks but doesn't remove them.
Sources
- Check if a gambling operator is legal, Australian Communications and Media Authority
- Taxation Ruling IT 2655: gambling and betting winnings, Australian Taxation Office
- Crypto asset prizes and gambling winnings, Australian Taxation Office
- BetStop, Australian Government
- BetStop: the National Self-Exclusion Register, Australian Communications and Media Authority
- Gambling, Department of Social Services
More guides
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.