Why the 40% Gaming Duty Makes Betti’s Offshore Bonuses Look Bigger

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Updated September 2026

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Editorial Team «Betti Casino» September 12, 2026 Reading time: 9 min

The reason offshore bonuses are bigger is sitting in the Budget

Every player I talk to who has noticed that offshore casinos seem more generous than regulated ones assumes it is about marketing aggression or lower standards. It is neither. The real reason Betti’s bonuses can look bigger than a UK-licensed site’s is a single line in the British tax code, and almost nobody in casino coverage connects the two. Once you see the link, the whole “offshore is more generous” phenomenon stops being mysterious and becomes simple arithmetic.

Here is the line. Remote Gaming Duty, the tax on online casino revenue, is rising from 21 to 40 percent on 1 April 2026, nearly doubling the tax burden on UK-licensed online casinos at a stroke. A regulated operator must pay that 40 percent on its gaming revenue. An offshore operator like Betti, licensed in Curaçao and operating outside UK regulation, pays none of it. That gap, 40 percent of revenue retained versus paid, is the engine that funds the difference in bonus generosity, and it is about to widen sharply.

This piece follows the money. I will explain what the duty does to operator margins, how that margin difference becomes the bonus arbitrage you see as a player, and the hidden cost that the bigger offshore bonus quietly carries. It is the economic explanation that competitors in this space never give, because giving it requires connecting a casino bonus to a Treasury decision, and that connection is exactly what turns a vague sense of offshore generosity into a clear understanding of who is paying for it and why.

What the duty does to margins

Any conversation about bonus generosity has to start with operator margins, and any conversation about margins has to reckon with what a near-doubling of the gaming tax actually does to the profitability of running a casino. The impact is larger than the headline percentage-point change suggests, because the tax bites into gross revenue, before any of the costs of running the business are subtracted.

Play the arithmetic through. A UK-licensed casino that used to pass 21 percent of its gaming revenue to the Treasury now passes 40 percent, an increase of nineteen percentage points against a revenue base that must still cover payroll, product, technology, marketing, and player rewards. Because online gambling runs on thinner net margins than the gross figures at the top of the income statement suggest, a tax that consumes almost twice as much of the top line squeezes the residual profit dramatically. The scale is not abstract: the owner of one of the largest UK brands has publicly estimated the additional annual cost to its UK-and-Ireland online business from the incoming tax measures at around £200 million, a number that shows just how much of a regulated operator’s economics the change absorbs.

An operator sitting outside the UK licensing perimeter absorbs none of that. Betti and its offshore peers do not pay the duty on their UK-facing revenue at all, which leaves their per-pound margin structurally fatter by roughly the tax the regulated side pays. This is not the reward for smarter operations or a superior product; it is the mechanical consequence of being outside the tax net that the regulated market is inside. That is why the 40 percent number matters more than any other single figure in this story, because it is the precise size of the margin gap that opens between paying the duty and avoiding it, and every downstream difference in bonus policy traces back to it.

The bonus arbitrage

Now for the piece of machinery that turns a tax gap into a marketing weapon. What sits in front of the player as a more generous headline offer is, at its core, an arbitrage: the offshore operator exploiting a difference in cost structure that the regulated competitor cannot match, and passing part of that saved cost back to the player in the shape of a bigger bonus. Once framed as arbitrage, the “offshore is more generous” observation stops being about culture and becomes about accounting.

The mechanics are simple to trace. A welcome bonus is a marketing expenditure paid out of margin, and the operator whose margin is wider can, by definition, fund a larger bonus and still turn a profit on the acquired player over their expected lifetime. Because the offshore operator retains the entire duty share that the regulated operator pays out to the Treasury, its per-player margin is fatter by roughly that avoided tax, which means the offshore headline offer can be set at a level a regulated operator would post at a loss. The player registering because Betti’s bonus looks bigger is not, strictly speaking, being rewarded for spotting a generous operator; they are being invited to share a slice of the operator’s tax saving, and the difference matters because it locates the source of the generosity in fiscal policy rather than in operator behaviour.

The policymakers designing the duty change understand this dynamic well and are widening it rather than narrowing it. Alongside the Remote Gaming Duty rise, a new General Betting Duty of 25 percent for online betting, up from the current 15 percent, is scheduled to come into force in April 2027, and bingo duty is being abolished, spreading the additional pressure across product verticals rather than concentrating it in one. The forecast consequences at market scale are pointed: industry modelling of the tax reform has estimated that more than £6 billion of staking could shift into the black market as a result, a roughly 140 percent increase in the size of the unregulated segment, as players follow the bigger bonuses across. That projected migration is nothing other than the bonus arbitrage operating at the level of an entire market, with the tax gap generating a pull large enough to move players and their money out of the regulated system.

The hidden cost of the bigger bonus

The point that closes the argument is the one that never gets said in offshore marketing copy: a bonus funded by avoided tax is not free money for the player who claims it, because the tax being avoided was paying for something specific, and that something goes missing at the same moment the bonus arrives. The bigger the offshore bonus, the wider the gap in what the tax was funding on the other side of the ledger.

Look at what the Remote Gaming Duty actually pays for in aggregate. It is not simply general revenue; it is, in effect, the annual price of the regulated environment the player would otherwise sit inside, the funded enforcement apparatus, the mandatory technical and behavioural protections, the accessible dispute-resolution routes, the age and vulnerability safeguards, the audit and reporting overhead operators must staff and maintain. A regulated casino’s smaller bonus is smaller partly because the operator is contributing to those systems out of the same margin the bonus is drawn from. An offshore casino’s bigger bonus is bigger partly because the operator is contributing to none of them. The two observations are not separate; they are two views of the same accounting truth, seen once from the player’s bonus balance and once from the safety net that was funded when the tax was paid.

The state is entirely aware of the migration the tax gap will encourage and is deploying resources to blunt it. The government has allocated £26 million over three years to the Gambling Commission to disrupt illegal sites, an allocation that is itself an implicit acknowledgement that the widening duty differential will pull players toward untaxed offshore operators of exactly the type this piece has been describing. For a player standing at the point of decision, that reframes the offshore bonus completely: its scale is a measure of tax avoided, tax avoided is the funding source of the protections stripped away, and so the size of the extra bonus is also, quite precisely, the size of the safety net being traded for it. Understanding the specific licensing arrangement that lets an offshore operator sit outside the UK system in the first place, and what the recent regulatory reform in that jurisdiction actually changed, is covered in the breakdown of Betti’s Curaçao licence after the LOK reform.

Prepared by the Betti Casino editorial staff.