Where promotion meets consumer law
Bonus advertising is one of the highest-volume, highest-risk categories in gambling marketing. It is where advertising codes, consumer protection law and licence conditions on fair terms all converge. In Britain, the Competition and Markets Authority's 2016 to 2019 investigation of online gambling secured undertakings from William Hill, Ladbrokes, PT Entertainment and BGO over how they offered bonus promotions, and the Gambling Commission now requires operators to adhere to the CMA's principles to demonstrate compliance with their licence conditions.
The reason is structural. A promotion has a headline designed to be compelling and conditions designed to protect the operator's margin, and the gap between what the headline promises and what the conditions deliver is exactly what the rules exist to police.
The core test
Almost every bonus advertising rule reduces to one question:
Could a reasonable consumer, reading the headline, form an expectation that the terms then defeat?
If yes, the promotion is a problem regardless of whether the terms are technically disclosed somewhere. Codes express this through requirements on significant conditions, materiality and prominence, but the underlying test is the expectation gap.
Applying it before publication catches most issues. Give the headline to someone who has not seen the terms, ask what they think they would get, then show them the terms and watch their reaction. That is the test the adjudicator will effectively apply, conducted in advance.
Significant conditions and where they must appear
A significant condition is one that materially affects the consumer's understanding of the offer. Codes generally require them with the claim, not merely somewhere. In Britain, CAP Code rule 8.17 requires promotions to communicate all applicable significant conditions clearly and prominently where leaving them out is likely to mislead, and the Gambling Commission's licence conditions require them at the point of sale and on advertising in any medium; where space makes that impossible, the advertisement must say that significant conditions apply and, online, show them in full no more than one click away (social responsibility code 5.1.9).
The recurring set for gambling promotions:
Wagering requirement. The multiple of bonus, deposit or both that must be staked before withdrawal. The single most significant condition and the one most often relegated. In Britain, since 19 January 2026, wagering requirements may not exceed 10 times.
What the multiple applies to. 35x bonus and 35x bonus plus deposit are very different obligations from the same headline number.
Qualifying deposit and minimum stake.
Time limits for claiming, for using and for completing wagering.
Game weighting, where play on some games contributes less. A 100% weighting on slots and 10% on table games changes the real requirement by a factor of ten for a table player. The Gambling Commission expects operators to explain that contributions to wagering requirements vary between games and link clearly to the detail.
Maximum withdrawal from bonus winnings, which caps what the customer can actually take.
Maximum stake while a bonus is active, particularly where breaching it voids winnings. This is the condition that generates some of the angriest complaints, because a customer can comply with everything else and lose the lot on a single stake. In Britain, a play restriction such as a maximum stake may only apply to play with the customer's own deposit balance where software stops the player from breaching it.
Excluded payment methods. In 2024 the ASA found an excluded payment method insufficiently prominent when it sat in small print among the full terms further down the page.
Country and eligibility restrictions.
The practical rule for placement: anything that would change a reasonable person's decision belongs where they make the decision. A link to full terms is legitimate for detail, and it does not discharge the obligation for the conditions that define the offer.
The words that cause trouble
Certain terms attract scrutiny because they make an absolute claim.
"Free". Widely restricted where the offer requires a deposit, requires wagering before withdrawal, or carries meaningful conditions. The general position across codes is that something described as free should be obtainable without material cost or obligation. In Britain, describing a product as free when the consumer must pay anything beyond the unavoidable cost of responding is one of the commercial practices banned outright (Digital Markets, Competition and Consumers Act 2024, Schedule 20), and CAP advises that an offer should not be called "free" if the customer must risk their own money to qualify. "Free spins" requiring a qualifying deposit and carrying a wagering requirement is the classic contested case, and where it is permitted it is usually permitted only with the conditions immediately adjacent.
"Risk free" and "no risk". If the customer can lose money, or can lose the value of their stake in any circumstance, these are difficult to defend. A "risk free bet" returning a non-withdrawable bonus rather than cash is the classic misleading pattern, because the customer's stake was in fact at risk. CAP advises avoiding "risk-free" unless the customer genuinely cannot lose their own funds, and Massachusetts prohibits describing sports wagering as "free", "cost free" or "free of risk" if the player must risk their own money to use or withdraw winnings from the wager (205 CMR 256.04).
"Guaranteed", "sure", "certain". Incompatible with gambling in almost any framing.
"Up to". Permitted in most codes but constrained: CAP Code rule 3.22 says "up to" claims must not mislead by exaggerating the availability or amount of benefits likely to be obtained. Where a headline says up to a large amount and few claimants could come close to it, the headline misrepresents the offer.
"Bonus" used loosely. Where a credit is not withdrawable, describing it in terms suggesting money is the issue.
Restricting and withdrawing offers
Two areas generate disproportionate trouble.
Discretionary voiding. Terms permitting the operator to void a bonus and confiscate winnings at its discretion, or on vaguely defined grounds such as irregular play, are the provisions the Gambling Commission singles out as unfair: its guidance says a term that gives a licensee the discretion to decide when and how it is applied would be unfair under the Consumer Rights Act 2015, naming terms on "illegal, irregular or fraudulent play". The problem is not that operators need an anti-abuse remedy; they do. It is that a discretion capable of being exercised inconsistently, and not evidenced when it is, fails the fairness test. A workable version defines the prohibited behaviour specifically, keeps fraud and cheating terms separate from promotional play restrictions, applies it consistently, records the evidence in each case, and gives the customer a full explanation of the specific term breached.
Targeted offers to the wrong customers. An offer sent to a customer who has self-excluded, who has been restricted on responsible gambling grounds, or who is displaying risk indicators is a compliance failure in two frameworks at once: the licence, which in Britain requires operators to take all reasonable steps to prevent any marketing material being sent to a self-excluded customer (social responsibility code 3.5.3), and the rules on direct marketing consent. Reactivation offers are among the highest-risk, because a dormant customer may have stopped for a reason. The Commission's code also says that when a self-exclusion expires, no marketing should be sent until the customer has asked for or agreed to it.
Presentation on the page
Several practices attract dark-pattern analysis under fairness and transparency rules rather than under advertising codes.
Pre-ticked opt-in to a bonus, so a customer receives it without choosing and is subject to wagering conditions they did not accept. The Gambling Commission's guidance is that players must opt into promotions rather than being automatically enrolled.
Terms below the fold or behind a link on the screen where the offer is accepted.
Asymmetric friction: claiming the bonus takes one tap, declining it takes several or is not obvious.
Countdown timers on offers that renew. In Britain, falsely stating that an offer is available only for a limited time, to elicit an immediate decision, is banned outright.
Progress display that shows wagering progress in a way that overstates how close the customer is.
The test that catches all of these is the symmetry test: is the protective or cautious action as easy as the committing one? Where it is not, the interface is doing work the terms do not disclose.
Affiliate-published bonus claims
A persistent source of bonus advertising problems is not the operator's own site. It is affiliates describing the operator's offers in their own words, frequently based on terms that have since changed. The operator answers for it: in Britain, licensees are responsible for the actions of third parties with whom they contract, and their contracts must allow them to terminate affiliates that breach an advertising code.
Three controls address most of it. Keep the claims library current, so the compliant description is available. Monitor for the risk terms, since brand plus "no wagering" is a high-yield search to run. And notify affiliates when terms change, because stale accurate copy becomes inaccurate copy without anybody acting.
The pre-publication checklist
Seven questions for any promotion, applied before it goes live.
What would a reasonable person expect from the headline alone? Which conditions defeat that expectation, and are they adjacent to the claim? Is every absolute word ("free", "risk free", "guaranteed") defensible on the actual terms? Does the maximum withdrawal or maximum stake condition materially change the offer's value, and is it prominent? Can any discretionary term be applied consistently and evidenced? Who will receive this, and have excluded and restricted customers been suppressed at the point of send? And is the affiliate-facing description of this offer in the claims library and current?
A promotion that clears those seven will rarely produce a finding. One that clears the first six and fails the seventh produces a finding in somebody else's name that the licensee answers for.
In Britain, two further checks are now hard rules rather than judgement, in force since 19 January 2026: a wagering requirement of no more than 10 times, and no more than one type of gambling product (betting, casino, bingo or lottery) within a single incentive, so an offer such as "bet £5 and get 20 free spins" is no longer permitted. The Commission's guidance allows an incentive whose bonus the customer is free to spend on any product category they choose.