What is bonus abuse? What casinos mean by it, and what UK regulators say

Bonus abuse is the term casino operators use for play they say breaks the terms of a promotion. It covers fraud-type conduct, such as opening multiple accounts or colluding with other players, and breaches of play restrictions, such as betting above a maximum stake or using a betting pattern the terms prohibit. It is a contractual label, not a legal offence in itself. Where an operator finds bonus abuse, it usually removes the bonus and any winnings made with it, and may close the account.

What operators can do about it is limited. In Great Britain, consumer law and the Gambling Commission’s licence conditions require terms to be fair and transparent. The Competition and Markets Authority (CMA) secured undertakings from operators in 2018 on how bonus play restrictions may be written and enforced.

What operators call bonus abuse

Promotional terms tend to group several different things under one heading:

• Multiple accounts and collusion. Opening more than one account to claim a sign-up offer more than once, or working with other players to pass value between accounts.
• Low-risk or hedged betting. Covering opposite outcomes, for example both red and black at roulette, so that the wagering requirement is cleared with little risk.
• Breaking a maximum-bet rule. Staking more per spin or bet than the promotion allows while a bonus is active.
• “Irregular play” clauses. Broad terms that let the operator treat any pattern it considers unusual or abusive as a breach.

The first group is fraud or cheating. The rest are rules about how a bonus may be played, which is where most disputes arise.

What UK regulators said

The CMA investigated online gambling promotions between 2016 and 2019. In a 2017 speech, its project director described “more nebulous and uncertain terms” that banned “low risk betting strategies” or behaviour the operator considered “an ‘abuse’ of the promotional terms”. Where nothing stopped consumers breaching those terms by accident, and operators could use their discretion to forfeit winnings and deposits, the CMA said such terms “are not fair or transparent”. It added that once an operator accepts a bet there is a binding contract, and the winnings constitute an enforceable debt.

Three operators gave formal undertakings in February 2018, and a fourth in March, according to the CMA’s case page. The CMA then set out the same changes for the whole sector in its overview for industry.

Practice	What terms usually say	What UK regulators said
Multiple accounts, collusion, fraud	Prohibited; bonus and winnings removed, account may be closed	The CMA accepts firm sanctions for fraud, collusion, multiple accounts and deliberate cheating, but these terms must sit separately from play restrictions
Low-risk or hedged betting	Banned as a “low risk betting strategy” or as abuse	Nebulous bans of this kind were “not fair or transparent” (CMA); prohibited patterns must be clearly specified in advance
Maximum bet while a bonus is active	Stakes above the cap void the bonus and winnings	A significant condition that must be shown clearly (CMA); restrictions should apply to deposit play only where software blocks the breach
“Irregular play” or operator discretion	The operator decides what counts as abuse	Terms must not reserve sole discretion to the operator; a player losing winnings must get a full explanation, including the specific terms breached (CMA)

The undertakings also require that players can withdraw their deposit balance at any time, including while a bonus is active, and that deposit and bonus balances are shown separately. The CMA’s guidance predates the Digital Markets, Competition and Consumers Act 2024; the case page notes that the new law contains broadly similar prohibitions.

The Gambling Commission makes fairness a licence condition. LCCP condition 7.1.1 requires terms to be fair and transparent within the meaning of the Consumer Rights Act 2015, easily accessible, and complied with by the licensee. Its player guide says companies should let you keep what is left of your deposit and winnings from it, and should be clear about restrictions such as the size of bets.

The Commission has also changed the bonuses themselves. Since 19 January 2026, British licensees may not apply wagering requirements of more than 10 times to bonus funds, and promotions that require two or more types of gambling, such as betting and slots, are banned.

In Ontario, the AGCO’s Registrar’s Standards for Internet Gaming require an offer’s material conditions to be disclosed when it is first presented, with all other conditions no more than one click away. Complaints about cheating and collusion must be investigated, and operators must make their policies on detecting it, including account suspension and recovery of funds, available on request.

What operators can and cannot do

Read together, the UK rules point to a clear line. An operator can sanction fraud, multiple accounts and collusion, and can enforce a play restriction that was clearly set out before the player accepted the bonus. It should not rely on vague clauses to decide afterwards that legitimate play was abusive, should not keep sole discretion over what counts as a breach, and should not use bonus rules to take a player’s deposit.

How to avoid a dispute

• Read the significant conditions before opting in: the wagering multiple, maximum bet, excluded games, game weighting and time limit. Our guide to the best slots for wagering requirements explains how weighting and RTP change the cost of clearing.
• Keep one account per operator, and keep the bonus terms as they stood when you accepted them.
• Keep records: screenshots of the offer, your balance and the dates and amounts of deposits and withdrawals.
• If winnings are withheld, ask in writing for the specific term you are said to have breached.

Complaints go to the operator first. In Great Britain, the business has 8 weeks to resolve a complaint; after that you can take it to a free, independent ADR provider. The Gambling Commission does not decide individual disputes. In Ontario, players can escalate an unresolved dispute with a regulated site to iGaming Ontario, which lists bonus offers and terms and conditions among the issues it covers.

How operators detect it

Operators review account and play data for linked accounts and unusual patterns, and vendors sell automated tools for the job. EveryMatrix’s Bonus Guardian, launched in December 2025, is marketed as a machine-learning tool that flags bonus abuse and applies responses such as bonus exclusion or withdrawal holds. The performance claims are the vendor’s own; we have not seen independent testing.

A bonus is gambling with conditions attached, and there is no need to accept one. If gambling stops feeling like entertainment, free help is available 24/7: 1-800-MY-RESET in the US, 0808 8020 133 in Great Britain and ConnexOntario on 1-866-531-2600.