Why bookmakers limit
Most high-street and online bookmakers are "soft": they sell betting as entertainment, at a margin, to people who mostly lose. Their prices are not the sharpest in the market and are not meant to be. That works as long as the customers taking those prices are not selecting only the wrong ones.
An arber does exactly that. Every bet lands on a price that is higher than the rest of the market, and over hundreds of bets the bookmaker loses to that account. So bookmakers watch for the pattern, and when they see it they cut the account's maximum stake, sometimes to pennies. This is usually called being limited or "gubbed". Their terms allow it, and in most countries nothing obliges a bookmaker to take your bet.
It is not a punishment and it is not personal. It is a pricing decision about one customer.
Sharp bookmakers and betting exchanges are a different business: low margins, high limits, and prices that move with the money. They are far more tolerant of winning customers. Most arbs pair a soft bookmaker's stale price with a sharp price on the other side, so it is the soft account that carries the risk.
What gets an account noticed
Bookmakers do not publish how they profile customers, so everything here comes from what arbers and former traders report, not from a rulebook. The same signals come up again and again.
| Signal | Why it stands out |
|---|---|
| Stakes like 493.98 | Recreational customers bet 20, 50, 100. A stake worked out to the cent came from a calculator. |
| Always beating the closing price | If the odds you take are regularly higher than the odds at kick-off, you are picking off prices before they move. This is the measure traders trust most. |
| Obscure leagues and markets | Low-liquidity markets are priced with less care and watched more closely. A new account betting 300 on a third-division corner line is conspicuous. |
| Maximum stakes | Asking for more than the limit, or hitting it every time, gets a bet referred to a trader. A person then looks at your account. |
| Betting pricing errors | A price 30% above the market is a mistake. Taking it gets the bet voided and the account flagged in one go. |
| No ordinary bets at all | Never a favourite, never a weekend accumulator, never the big match: only singles at odd prices in odd places. |
| Money in, bet, money out | Depositing the exact amount for one bet and withdrawing as soon as it settles looks like what it is. |
| Bonus hunting | Taking every sign-up offer and nothing else puts an account under review before it has placed its first arb. |
What slows it down
None of this is a secret technique. It is the plain business of not waving a flag.
Round your stakes
Round to the nearest 5 or 10, or to whatever a normal customer at that stake size would bet. It costs a fraction of a percent on each arb. The calculator shows exactly what rounding does to each outcome, so you can see the price of looking ordinary before you pay it.
Stay in the big markets
Match winners, main totals and main handicaps in the major leagues attract the most money and the highest limits, and an account betting there has plenty of company. The arbs are smaller. The accounts last longer.
Prefer small arbs to spectacular ones
A 2% arb is a small disagreement between two bookmakers. A 15% arb is nearly always one bookmaker's mistake, which means a likely void and a marked account. The big numbers are the expensive ones.
Bet nearer to kick-off when you can
Limits are higher and prices are more settled in the last hours before a game, and more customers are betting then. The same stake stands out less.
Keep the stake in proportion
Betting well under a market's limit, and not escalating quickly after a win, keeps bets from being referred to a trader. Put the heavier side of an arb with the sharp bookmaker or the exchange, where size is not a problem.
Let the balance sit
Fund an account properly, leave money in it between bets, and withdraw in sensible amounts now and then, not after every win.
Spread the work
Twenty arbs a week through one bookmaker is a pattern. The same twenty across eight bookmakers is a few bets each.
Do "mug bets" work?
A mug bet is an ordinary losing-style bet, such as a small accumulator on the weekend's favourites, placed so that the account looks recreational. Opinion among arbers is split, and nobody outside the bookmakers has data.
The case for: an account with nothing but arbs has no cover at all. The case against: every mug bet has the bookmaker's full margin against it, so the cover costs real money, and a trader looking at whether you beat the closing price will not be distracted by a five-fold on Saturday.
A reasonable middle: do not pay for a disguise. If you like a bet on a big match anyway, place it with the account that most needs to look normal. Do not expect it to save an account whose other bets all beat the market.
What not to do
Some advice you will find elsewhere should stay there.
- A second account at the same bookmaker breaks its terms. When it is linked to the first, and device, payment and identity checks make that likely, the bookmaker can close both, void the bets and withhold the winnings.
- Betting through other people's accounts, with or without their consent, breaks the terms in the same way. It can also be treated as fraud, and it puts someone else's name on your betting.
- A VPN to reach a bookmaker that does not serve your country means betting where that bookmaker is not licensed to take you. If it finds out, it can void the bets and withhold what you won.
- False details at sign-up fail the identity check that every licensed bookmaker runs before a withdrawal.
Apart from the legal side, each of these turns a limited account, which costs you nothing, into a closed one with your winnings withheld and a dispute to fight.
When the limit comes
You will usually not be told. The signs are a maximum stake that has collapsed to a few units, every bet going to "trader approval", promotions that no longer apply to you, or an email about a "business decision".
- Withdraw the balance. A limited account can normally still withdraw. Do it promptly and expect an identity check.
- Do not argue for long. Support staff cannot reverse a trading decision, and limits are rarely lifted.
- Check what still works. Some bookmakers limit one sport and leave others open. A few racing jurisdictions, some Australian states among them, have minimum-bet rules that oblige bookmakers to accept racing bets up to a set payout. Most places have nothing like that.
- Move on. There are a great many bookmakers, and new accounts get the benefit of the doubt for a while.
Treat limits as a cost
The honest way to think about a soft bookmaker's account is as something with a working life. It will earn for a number of weeks or months and then stop. Care extends that life. Nothing makes it permanent.
That changes the question from "how do I avoid limits" to "what is this account worth before it goes, and am I spending it well". Burning an account on a doubtful 12% arb that gets voided is a bad trade. Fifty unremarkable 2% arbs is a good one.
It is also a reason some arbers move part of their effort to value betting, which needs one bookmaker per bet instead of two. Arbitrage vs value betting compares the two. If you are still at the beginning, start with what an arb is and how the stakes are worked out.
The scanner says which bet to place first and flags prices that stand far from the market.
Open the scannerKeep reading
- What is arbitrage betting?Two bookmakers disagree on one game. How backing both sides works, what it really pays, and the risks.
- How to calculate an arbThe formula step by step, with two-way and three-way examples, commission, rounding and bias.
- Arbitrage vs value bettingOne covers every outcome, the other takes only the good price. Edge, swings and risks, compared with numbers.
- Arbitrage calculatorStakes for two-way and three-way arbs, with commission, rounding and bias.