Arbitrage Betting Australia Reddit: The Top Questions, Answered Properly
- Most arbitrage betting threads on Reddit circle the same questions about limits, tax, bankroll, bookmakers and voided legs.
- An arb locks in a return at the prices shown, usually a couple of percent, but prices move, stakes get limited and bets can be voided.
- The ATO says gambling winnings generally aren't assessable income, but systematic betting can raise business questions, so get proper advice.
- A voided leg turns a lock into an ordinary bet, so decide in advance how you'll handle it.
- Use only licensed Australian bookmakers, and ignore any tool built on in-play markets.
Arbitrage betting Australia Reddit threads ask the same questions over and over: will I get limited, do I pay tax, how much money do I need, and what happens if a bet is voided? The answers are usually there somewhere, buried between good replies, outdated tips and overseas advice that doesn't apply here. This guide organises those recurring questions into one place and answers them plainly, with worked numbers you can check yourself. The tone is the one forum users trust: honest about what arbing can do and equally honest about where it goes wrong. An arb locks in a return at the prices shown when both bets are accepted. It doesn't make prices stand still, stop bookmakers limiting accounts, or protect you from typing the wrong stake.
- Why do arbitrage betting Australia Reddit threads keep asking the same things?
- Will bookmakers limit my account if I arb?
- Do I pay tax on arbitrage returns in Australia?
- How much bankroll do I need, and what does a lock look like in numbers?
- What happens if one leg of an arb gets voided?
- What does Reddit say is the best arbitrage betting software?
Why do arbitrage betting Australia Reddit threads keep asking the same things?
Search arbitrage betting reddit and you'll find the same handful of questions posted every few weeks. Someone notices two bookmakers disagree on a tennis match, works out they could back both players and come out ahead, then asks the forum whether it's worth doing.
The answers are often good. The problem is they're scattered. One reply nails the maths, another describes rules a bookmaker changed years ago, and a third is someone selling a course. Arbitrage betting reddit australia threads also drift into overseas advice, which matters because Australian rules on licensing and in-play betting are different.
The questions that come up most:
- Will I get limited, and how quickly?
- Do I pay tax on arb returns?
- How big a bankroll do I need?
- Which bookmakers should I use?
- What happens when one leg is voided?
- Which software do people actually rate?
Each is answered below. The standard is the one good forum replies set: plain language, real numbers and no pretending the risks aren't there. An arb removes the uncertainty about which side wins, at the prices you got. It doesn't remove the practical risks of moving prices, limits, voids and human error, and those are where beginners tend to lose money.
Will bookmakers limit my account if I arb?
This is the most common question in any arb betting reddit thread, and the honest answer is: probably, eventually. Bookmakers can restrict the stakes they'll accept from an account, and accounts that consistently take the sharpest price on every market tend to stand out.
What forum users describe is usually gradual rather than sudden. The maximum stake on certain markets shrinks, sometimes to a few dollars, while the account stays open. Nobody can predict exactly when, and no tool can promise you'll avoid it.
Habits people share that make practical sense:
- Bet round amounts. $245.10 looks like a calculator output. $245 looks like a person. Rounding costs a little margin, and many arbers accept that.
- Don't only bet obscure markets. Lower-tier markets are where prices disagree most, but a pattern there is easy to spot.
- Treat each account as a finite resource. Assume it has a lifespan and plan your bankroll around that.
- Keep records. When stakes get cut, you'll know which accounts still have room.
The mindset that helps is to expect limits rather than take them personally. A limit is a commercial decision by the bookmaker. Budget for it, and don't respond by moving to offshore sites. Stick to licensed Australian bookmakers, which you can confirm using the ACMA's guidance on checking whether a gambling operator is legal.
Do I pay tax on arbitrage returns in Australia?
Tax threads get heated, so go to the source. The Australian Taxation Office's page on gambling winnings sets out its general position: for most people, winnings from gambling aren't assessable income.
The key word is most. The ATO's Taxation Ruling IT 2655 deals with gambling and betting winnings and looks at whether a person is carrying on a business of betting, including how systematic and organised the activity is. Arbing is systematic by nature, so it's a fair question to take to a registered tax agent rather than settle from a forum comment.
What you can do yourself:
- Log every lock: date, event, bookmakers, odds, stakes and result.
- Record deposits and withdrawals for each account.
- Note every voided leg and what you did about it.
- Keep the records for several years.
Good records cost nothing and make any conversation with an accountant short. They also show whether arbing is actually working for you once mistakes and voids are counted, which is the number that matters most.
Don't rely on a Reddit consensus either way. People who say it's never taxable and people who say it definitely is are both skipping the part where your own circumstances decide it. This guide isn't tax advice; the ATO's material and a registered professional are where the answer lives.
How much bankroll do I need, and what does a lock look like in numbers?
Bankroll questions usually arrive with a figure attached: I've got $500, is that enough? It can be, but it helps to see where the money goes.
Worked example. One bookmaker has Player A at 2.08 and another has Player B at 2.00. Add the implied probabilities: 1 ÷ 2.08 = 0.4808 and 1 ÷ 2.00 = 0.5000, a total of 0.9808. Anything under 1 is a lock, and this one returns about 1.96% at those prices.
With $500 to spread:
- Stake on A: $500 × 0.4808 ÷ 0.9808 = $245.10
- Stake on B: $500 × 0.5000 ÷ 0.9808 = $254.90
- If A wins: $245.10 × 2.08 = $509.81
- If B wins: $254.90 × 2.00 = $509.80
Either way, about $9.80 back on $500, provided both bets are accepted at those prices.
That's typical. AUOdds data puts the typical lock over the last 30 days at 2.1%, across 802 locks in that period. Returns per lock are small, so volume does the work.
The catch is that your $500 isn't in one place. It's split across accounts and tied up until events settle. Spread across five bookmakers, you might have only $100 in the account the next lock needs.
A sensible start:
- Use money you can afford to have tied up for weeks.
- Fund fewer accounts properly rather than many thinly.
- Rebalance by withdrawing from accounts with a surplus.
What happens if one leg of an arb gets voided?
This is the question that catches people out, because a void turns a locked return into an ordinary bet.
Bets can be voided for several reasons: an obvious pricing error, a player withdrawing, an event being abandoned or postponed. Settlement rules vary between bookmakers, so the same event can be settled differently on each side of your arb. Read the rules for the market before you bet, especially for tennis retirements and postponed matches.
Using the earlier example, suppose the $254.90 on Player B is voided and refunded. You're left holding $245.10 on Player A at 2.08:
- If A wins, you collect $509.81.
- If A loses, you're down $245.10.
That's a far wider range than the $9.80 you set out to lock in. You can leave it as a straight bet, or place a new bet on Player B at whatever price is now available, which may eat into the margin or turn it slightly negative.
Decide your rule in advance. Many experienced arbers re-cover straight away and accept a small loss, because that keeps the approach behaving like arbing rather than punting. Whatever you choose, record it.
Other mistakes forums mention often: typing the wrong stake, backing the wrong line (over 2.5 instead of over 3.5), and placing the second leg after the price has already moved. Check every bet slip before confirming.
What does Reddit say is the best arbitrage betting software?
Search best arbitrage betting software reddit and the pattern repeats: someone asks, a few people name a paid tool, others share a free scanner or a GitHub project, and the thread ends without a clear answer. That's because the right tool depends on where you bet.
For Australians, these checks matter most:
- Australian bookmaker coverage. A tool built around overseas sites shows locks you can't place. Every bookmaker should be a licensed Australian operator.
- Price freshness. Arbs close quickly, so ask how old a price is in seconds, not minutes.
- Exact stakes. You want the stake for each outcome, not division on your phone at kick-off.
- No in-play. Online in-play sports betting isn't offered to Australians, so ignore any locks built on live markets.
- Honest marketing. Skip anything that promises an income.
As a benchmark, AUOdds covers 9 Australian bookmakers, tracks about 15,000 prices at any moment with prices around 10 seconds old, and found 442 locks in the last seven days. Compare any option against figures like those.
Free GitHub scripts are a fine way to learn the maths, but maintaining scrapers is a job in itself, and stale data produces locks that don't exist.
A quick reminder. Gambling is for people aged 18 and over. Arbing still moves real money through betting accounts, and it can slide into ordinary punting when legs are voided or you start chasing. If it stops feeling under control, BetStop, the National Self-Exclusion Register, lets you exclude yourself from licensed online and phone bookmakers, and Gambling Help Online offers free, confidential support.
Frequently asked questions
Is it okay to use offshore bookmakers people mention on Reddit?
Stick to licensed Australian bookmakers. Overseas advice in forum threads often assumes sites that aren't legal to offer services here, and you'd have little protection if something went wrong with your funds. The ACMA explains how to check whether a gambling operator is legal before you open an account or deposit any money.
Can I arb in-play markets like overseas Redditors do?
No. Online in-play sports betting isn't offered to Australians, so locks built on live markets aren't something you should plan around. Focus on pre-match markets with licensed Australian bookmakers, and treat any software that pushes in-play arbs as built for a different country's rules.
How much do arbers actually make per bet?
Typical locks return a couple of percent of total stake at the prices shown, so $500 spread across two outcomes might return around $10. Results over time depend on turnover, limits, voided legs and mistakes, so nobody can promise a figure. Track your own results honestly, including the bets that went wrong.
Should I round my stakes?
Many arbers round stakes to look like ordinary punters, for example $245 instead of $245.10. Rounding slightly changes the return on each outcome, so recheck the numbers before placing both bets. Small rounding usually trims the margin a little rather than removing it, but on thin locks it can push one outcome below break-even.
Sources
- Taxation Ruling IT 2655: gambling and betting winnings, Australian Taxation Office
- Crypto asset prizes and gambling winnings, Australian Taxation Office
- Check if a gambling operator is legal, Australian Communications and Media Authority
- BetStop: the National Self-Exclusion Register, Australian Communications and Media Authority
- BetStop, Australian Government
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.