A five-point rise, and the warning that arrived with it
The UK’s machine games duty went up to 25% in the autumn budget, a rise of five percentage points, and within hours the trade reaction had sorted itself into two piles: quiet relief that it wasn’t worse, and sharp warnings about illegal gambling market risk. The warning, as reported by iGaming Business, is that squeezed licensed operators will cut back on odds and promotions, and some customers will drift to unlicensed sites that look identical from the outside.
If you bet in the US, none of that duty applies to you. The argument does. It is the same argument being made in statehouses where sports betting and iGaming tax rates are under review, and it’s worth understanding on its own terms, including the part where the evidence thins out.
What actually changed in the UK
Machine games duty rose to 25%, up five points, announced by the Chancellor in the autumn budget. The iGB report does not state a commencement date, and rather than invent one, treat the budget documents as the place to confirm when the rate bites. The figure also lands well below the 40% rate that was circulating through the summer, which came from a Social Market Foundation report rather than Treasury plans.
The more important context is cumulative. This is the third significant duty change to hit UK operators in short order:
| Duty | Previous rate | New rate | Status in the report |
|---|---|---|---|
| Machine games duty (MGD) | 20% | 25% | Announced in the autumn budget |
| Remote gaming duty (RGD) | 21% | 40% | Announced in the previous year’s budget |
| General betting duty (remote betting) | 15% | 25% | Chargeable from 1 April 2027 |
The objections came from advisers and lawyers rather than from brands. Dan Waugh of advisory firm Regulus put the relief framing to bed: “If your income tax went up by a quarter overnight, you wouldn’t see that as a positive.” He pointed to venue closures, job losses, and the signal that shifting fiscal policy sends to investors. Bethan Lloyd, a partner at Wiggin, told iGB the industry is “already very squeezed” and that a five-point rise on squashed margins “is not ideal”, flagging knock-on risk to horse racing revenues given how many punters still use betting shops rather than apps.
How a duty rise reaches the bettor
Duty is charged on operator revenue, not on your stake, so it reaches you indirectly through pricing. That makes the chain short and fairly predictable.
The pass-through chain
Gambling duties are generally levied on gross gambling yield, or on gross gaming revenue in US terminology: stakes minus payouts. When that take is taxed more heavily, an operator has a limited set of levers. It can widen the margin baked into its odds, so the same bet returns less. It can trim promotional spend, which means fewer boosts, smaller welcome offers, and less generous free-bet terms. It can cut costs elsewhere, including marketing and retail estate. Most do some combination.
None of that is a conspiracy. It is what a business with thin margins does when a point-of-consumption tax goes up. The practical result for a customer is that the licensed product gets slightly worse value, slowly, in ways that are easier to feel than to measure.
Channelization, and why regulators watch it
The channelization rate is the share of total gambling activity that happens with licensed operators rather than unlicensed ones. It is the number a regulator uses to judge whether its framework is actually working, because a rule only protects the players it reaches. A market can have excellent consumer protections and still fail if enough demand sits outside the licensed perimeter.
That’s the tension in gambling tax policy in one line. Tax rates set too low leave public revenue on the table; set high enough, they can erode the price competitiveness of the licensed product and push some demand outside the perimeter. Economists call the sensitivity of that response tax elasticity. Nobody has a settled figure for where the tipping point sits, and the people with the best data on it are the operators paying the tax.
Where the evidence on illegal gambling market risk runs out
The strongest claim in the iGB report comes from Ismail Vali, president of Gaming Compliance International, who called the MGD rise part of a “perfect storm” and cited data putting the unregulated share of UK online gross gaming revenue at 0.43% in 2020, rising to an estimated 9% by the end of 2025. “We are knocking on the door of 10% illegal black market share,” he said. He also pointed to “plug-and-play” offshore sites with startup costs reportedly as low as $25,000, and to the core consumer problem: “Consumers cannot differentiate between this stuff.”
Take that seriously and still hold it at arm’s length. It is an estimate attributed to a compliance firm, not a figure published by the Gambling Commission, and black-market sizing is notoriously difficult precisely because the activity is unrecorded. Doubling annually from 0.43% also means the early years of that series are built on a very small base, where small absolute changes look dramatic in percentage terms. I’m not going to substitute a more comfortable number here, because I don’t have a regulator-published one to offer. If you want the official view, the Gambling Commission’s own participation and enforcement data is where to look.
The obvious caveat: licensed operators have a direct financial interest in arguing that taxes drive customers offshore. That doesn’t make the argument wrong. Interested parties are often right about their own industry. It does mean the claim should be treated as a hypothesis with partial support rather than a measured outcome, and that “could” is the correct verb.
What you give up on an unlicensed site
The risks of unregulated betting sites don’t depend on how the channelization argument resolves. They are structural, and they are the same whether the offshore market is 1% of activity or 10%.
- No audited fairness. Licensed casino operators submit games and RNGs to approved testing labs. An offshore site can publish any RTP it likes with nothing behind the number.
- No payout guarantee. Licensed markets require segregated or otherwise protected player funds. Offshore, your balance is a promise from a company you cannot sue in any practical way.
- No dispute resolution. State-licensed operators have a complaints path that ends with a regulator. Unlicensed sites have a support inbox.
- Weaker data and payment security. Standards for handling identity documents and card details are a licence condition in regulated markets and a courtesy elsewhere.
- No responsible gambling tools. Deposit limits, loss limits, cool-off periods, reality checks, and above all state self-exclusion programs simply don’t exist offshore. If you’ve self-excluded, an unlicensed site will happily take your deposit.
- No age verification worth the name. Which is the regulator’s problem as much as yours.
As for legality in the US: a site taking bets from a state where it holds no licence is operating outside that state’s law. Enforcement has overwhelmingly targeted operators and payment processing rather than individual bettors, and the treatment of players varies by state, so the honest answer is that the site is the illegal actor and your exposure depends on where you live. Either way, you are unprotected.
Red flags that a site isn’t licensed
No licence number anywhere in the footer. A licence cited from a jurisdiction that doesn’t regulate your state. Crypto-only deposits with no bank rails. Promotions that are far better than anything a licensed book offers, with wagering requirements written vaguely or not at all. No self-exclusion option in the account settings. No named regulator in the terms. Any one of these is enough to stop.
The same argument, now in US statehouses
Several US states have raised or debated raising their state gaming tax on sports betting and iGaming since legalisation spread, and operators have responded with versions of the UK argument: raise the rate too far and the licensed product loses its pricing advantage over offshore books that pay nothing. Rates differ enormously by state and are amended often enough that quoting a specific figure here would be a liability rather than a service; check your state’s current statute or gaming commission publications.
What travels is the structure of the trade-off, not the numbers. Any state setting a rate is choosing between revenue per dollar wagered and the share of wagering it manages to keep inside the regulated market, and US states have an additional wrinkle the UK doesn’t: a large, pre-existing offshore market that served bettors for years before legalisation and never fully went away. The brands are familiar, the apps are decent, and the habit is established.
Confirming a licence takes about five minutes
- Find the licence number and the named licensee in the site footer or terms, not in marketing copy.
- Open your state gaming or gambling commission’s public licensee database and search that name. The brand you see may be a skin operating under a different licensed entity, which is normal, but the chain should be visible.
- Confirm the licence covers your state and the product you want. A sportsbook licence is not an iGaming licence.
- Check the account settings for deposit limits, time-outs, and a link to your state’s self-exclusion program. Licensed operators are required to provide them; it’s a fast proxy test.
- Check that deposits run through regular banking rails and that identity verification happens before withdrawal, not never.
- If you cannot verify a state licence, treat that as the answer rather than a gap to research further.
Two different questions, two different answers
For a regulator, the rate-versus-channelization question is genuinely hard, the data is poor, and the loudest voices in the room are the ones writing the cheque. It deserves the careful treatment it rarely gets.
For an individual bettor, there is no comparable dilemma. Worse odds on a licensed site cost you money. An unlicensed site can cost you the balance, the dispute, the data, and the self-exclusion that was supposed to hold. Price friction is a reason to bet less, or to shop between licensed books, and never a reason to leave the perimeter.
Gambling has a built-in house edge, and over time the house wins; set a budget you’re comfortable losing and stick to it. Betting and casino play are restricted to adults, 21+ in most US jurisdictions. If gambling is causing problems for you or someone you know, the National Problem Gambling Helpline™ is available at 1-800-MY-RESET.