Our scrape of active bonus terms this month found ten clause types that regulators in the UK and US have separately fined or formally sanctioned operators for using. The most common pattern is not a single rogue term but a stack of small ones — an undisclosed blackout date, a “risk-free” label on a bonus-credit refund, a discretionary forfeiture clause — that together shift the offer’s real value far below the headline number. None of these clauses are hypothetical: each one below is tied to a specific enforcement action, ruling, or regulatory finding.
Key takeaways
- The UK Gambling Commission fined Taichi Tech Limited £170,000 in 2025 for a bonus term allowing the operator to close accounts or forfeit winnings at its own discretion.
- New UK rules cap wagering requirements at ten times the bonus value and ban bonuses that mix products such as sports betting and casino.
- The Massachusetts Gaming Commission fined ESPN Bet’s operator $15,000 after an on-air host called a wager a “risk-free investment.”
- A 2018 CMA investigation found combined deposit-and-bonus wagering requirements running as high as 20 to 40 times the total balance before UK operators agreed to change course.
- Our scoring model, described on the algorithmic weights hub, downgrades operators whose live terms match any of the ten patterns identified here.
Table of contents
Regulators are cracking down on bonus fine print
Bonus terms sit at the intersection of advertising law and consumer contract law, which is why enforcement comes from more than one direction. In the UK, the Competition and Markets Authority opened a sector-wide investigation in 2016 after receiving complaints that bonus terms locked up players’ own cash.
These problems were found to be common across the £4.7 billion online gambling sector and in October 2016 the CMA launched an investigation, in collaboration with the Gambling Commission, to tackle the shared concern around transparency and fairness.
That investigation, alongside the Gambling Commission’s own Licence Conditions and Codes of Practice (LCCP) and the Advertising Standards Authority’s CAP Code, still shapes what counts as an unfair term today.
In the US, oversight is more fragmented and sits mostly with state gaming commissions and the Federal Trade Commission’s general truth-in-advertising authority, plus individual sportsbook advertising codes. The clauses below draw on both regimes, because the underlying mechanics — hidden conditions, discretionary confiscation, misleading “free” language — repeat across markets regardless of which regulator eventually acts.
The 10 clauses we flagged
The table below summarizes the ten clause types our scraper flagged most often this month, each mapped to the regulatory action or finding that established it as a compliance risk.
| Clause pattern | Mechanism | Regulatory precedent |
|---|---|---|
| “Risk-free” bet paid in bonus credit | Loss is refunded as site credit with its own wagering requirement, not cash | Massachusetts Gaming Commission fine over on-air “risk-free” language |
| Repeated “free” bonus claims | Funds credited are bonus balance, not withdrawable cash | Gambling Commission £350,000 fine of ElectraWorks for repeated misleading “free bonus” adverts |
| Undisclosed blackout dates | Voucher or free bet invalid on specific high-traffic dates, unstated in the ad | ASA ruling against a 2025 voucher promotion |
| Hidden qualifying steps | Offer requires an action (e.g., replying to a text) not disclosed in the ad | ASA ruling against a 2024 free-bet promotion |
| Combined deposit-plus-bonus multiplier | Wagering requirement applies to deposit and bonus together, inflating the real multiple | CMA investigation findings, 20x–40x combined requirements |
| Cross-product bundling | Betting on sports unlocks casino spins or vice versa | UKGC ban on mixed-product incentives from 2026 |
| Wagering multiple above 10x bonus value | High playthrough drives longer, faster play to reach withdrawal | UKGC LCCP amendment capping bonus wagering at 10x |
| Discretionary account closure / forfeiture | Operator reserves unqualified right to close accounts or void winnings | Gambling Commission £170,000 fine of Taichi Tech Limited |
| Opaque weighted-game contribution | Game weighting rules reserve excessive discretion to the operator over what counts toward clearing | CMA/Gambling Commission joint statement on unfair terms |
| Mid-promotion term changes | Operator alters bonus terms after a player has already opted in | CMA commitment secured from BGO |
Clause deep dive: the worst offenders
“Risk-free” that isn’t free
The phrase “risk-free bet” survives in marketing copy long after regulators told the industry to drop it.
The standards make clear that “money back” offers must be in cash and not bonuses; “risk free” offers must incur no loss to the consumer
. When a Massachusetts sportsbook host described a wager as a “risk-free investment” on air in 2024,
a College GameDay segment that aired in 2024 led to a $15,000 fine levied against ESPN Bet’s owner by the Massachusetts Gaming Commission
.
The policy also directs ESPN and PENN employees to avoid using “free” and “risk-free” terminology
, underscoring that the operator itself already knew the language was off-limits.
Discretionary forfeiture clauses
The single most consumer-hostile clause in this list is the blanket right to void winnings without explanation.
A Commission investigation revealed Taichi Tech Limited had stated that: ‘Fafabet have the right at their own discretion to close accounts or forfeit winnings’ within their bonus terms for new casino promotions.
The Gambling Commission’s investigation concluded that Taichi Tech Limited breached the fair and open licensing condition by including a discretionary term allowing the operator to close customer accounts or forfeit winnings without clear justification.
The Commission also tied this directly back to consumer law:
the Consumer Rights Act 2015 is the general consumer protection legislation, and it is explicitly referenced within the Licence Conditions and Codes of Practice that gambling companies must follow, which requires licensees to ensure that their terms and practices are fair, clear, and do not breach consumer protection law.
Cross-product bundling
Bundled incentives that require staking on one vertical to unlock a reward on another are now a distinct compliance category in Great Britain.
Under revised Social Responsibility Code 5.1.1 of the Licence Conditions and Codes of Practice, bonuses must apply to a single gambling product only, and operators will no longer be allowed to offer incentives that combine or link products, such as sports betting, casino, bingo, or lottery, within a single promotion.
The regulator’s own worked example is blunt:
an offer that states “Bet £5 to get a free £5 bet” would be compliant with the new rules, but an offer that states “Bet £5 and get 20 free spins” would not.
The Commission’s underlying concern is behavioral, not just semantic —
cross-selling incentives evidence shows players are more at risk of harm when gambling on multiple products, while complex terms could cause confusion.
Moving the goalposts after opt-in
A quieter but equally damaging clause lets an operator alter a promotion’s terms once a player has already committed to it. This was one of the specific concerns the CMA’s 2016–2018 investigation forced operators to remove.
BGO agreed that it will not include terms which could be used to unfairly change promotions after players have opted in
, following a wider pattern where
the CMA found that certain terms in these promotions were likely to be ‘unfair’, in breach of consumer protection law, and could mislead consumers.
The same investigation flagged combined-balance wagering multipliers that
can vary between 20 times and 40 times the deposit and bonus — for example, a player depositing £20 and receiving a £20 bonus will find they have to stake a total of £800 at 20x wagering or £1,600 at 40x wagering, before being allowed to make a withdrawal.
How US sportsbooks compare
US enforcement so far has concentrated on advertising language rather than the wagering-mechanics clauses UK regulators pursue, largely because most states still lack a UK-style LCCP equivalent for bonus structure. The ESPN Bet fine above is one of the clearer examples of a state gaming commission acting on a single piece of misleading on-air language rather than a written term, which suggests US regulators are currently more focused on how bonuses are marketed than on the underlying wagering math. That gap matters for players: a US “bonus bet” can carry a combined-balance-style multiplier or a short expiry window with far less regulatory scrutiny of the clause itself than the same structure would attract in Great Britain.
What to check before you opt in
Independent of jurisdiction, the same checklist catches most of the ten clauses above before you claim an offer:
- Confirm whether the wagering multiplier applies to the bonus alone or to the deposit-plus-bonus balance — the CMA’s 2018 findings show this single distinction can double or quadruple the real playthrough.
- Search the terms for discretionary language (“at our sole discretion,” “may forfeit,” “reserves the right to close”) — this is the exact wording the Gambling Commission fined Taichi Tech Limited for using.
- Check whether the offer requires staking on one product to unlock a reward on another; under UK rules this structure is now non-compliant outright.
- Look for a stated expiry date, blackout period, or hidden qualifying action (a reply, a code, a minimum odds threshold) rather than a generic “T&Cs apply” link.
Our broader approach to spotting these patterns algorithmically, rather than relying on a human reviewer reading each term in isolation, is described on the core principles hub, and the fair play and fraud detection hub covers how we treat account-closure and forfeiture clauses in our broader security scoring.
Frequently asked questions
Is calling a bet “risk-free” ever legal?
Only if the customer genuinely cannot lose their own funds.
Marketers should not describe an offer as “free” if the customer must risk their own money to qualify, and ambiguous terms like “risk-free” should also be avoided, unless the customer genuinely cannot lose their own funds.
Refunds paid as bonus credit with wagering requirements do not meet that bar.
What is the new UK wagering requirement cap?
Under the Gambling Commission’s revised code, wagering requirements must not exceed ten times the bonus value, and this applies regardless of whether the offer consists of free bets, matched deposits, or free spins.
Anything above that on a UK-licensed site is now a compliance breach, not just poor value.
Where can I report an unfair bonus term?
If the operator holds a UK licence, complaints go to the Gambling Commission or the Advertising Standards Authority depending on whether the issue is the term itself or the ad presenting it. US players should contact the relevant state gaming commission, since bonus-clause oversight is handled state by state rather than federally.
Can an operator legally void my winnings on a technicality?
Only if the term is clear, specific, and not merely discretionary. Blanket clauses granting the operator unexplained authority to close accounts or void winnings have already drawn regulatory fines under UK fair-and-open licensing conditions, and similar vague-discretion clauses are a recurring flag in our own bonus scoring.
Methodology
Our algorithm ingests live bonus terms and conditions pages, changelogs, and cached historical versions across tracked operators, then flags clauses that match patterns established in regulatory rulings, fines, and consultation responses like those cited above — including discretionary forfeiture language, combined-balance wagering math, and mixed-product qualifying conditions. Flagged clauses feed into the weighting model described on the scoring system hub, and are cross-checked against the data-scraping pipeline outlined on the data scraping hub rather than assessed by a single human reader.
Gambling involves risk. Only play with money you can afford to lose and use the deposit limits and self-exclusion tools available in your jurisdiction.
