As tax pressures mount in the UK, a quiet but significant shift is underway across the online slots market. Faced with higher operating costs following the latest tax changes, many operators are reducing return to player (RTP) rates — typically deploying lower RTP versions of the same games to capture incremental margin without altering the product itself.
Standard RTPs in the UK have already moved from around 96% to 94%, with 92% now frequently requested as the maximum. On the surface, these look like small adjustments. In practice, they are not. As RubyPlay’s Eyal Loz puts it: “People think the difference between 96% and 92% RTP is ‘just 4%’. But it’s not 4% — it’s effectively 100%. If a player wagers €1 and the operator takes four cents, that’s the cost. If that becomes eight cents, you’ve doubled the cost of entertainment.”
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Players notice — even if they don’t know why
A common assumption behind RTP cuts is that players don’t notice. Industry voices are sceptical. G Games co-founder Helen Walton is direct: “When people say ‘players don’t notice a few percentage points’, that simply doesn’t match observed behaviour.” Players may not calculate RTP explicitly, but they feel it in shorter sessions, lower hit frequency and a growing sense that their money isn’t lasting as long. The risk is not immediate backlash but gradual disengagement — and the highest-value players are the most likely to leave first.
Germany’s cautionary tale
The clearest warning comes from Germany, where a 5.3% turnover tax on online slots has pushed RTPs down to around 90% or lower. The licensed slots market has shrunk from roughly €800 million in annual revenue in 2022 to around €470 million in the second half of 2025, while the black market has grown to an estimated €2 billion. Channelisation has fallen below 40%. Loz describes a “cliff edge” effect: “If you lower RTP from 96% to 94%, you don’t see a huge difference. But below 94%, there’s a statistically significant drop. Around 90% and below, the drop becomes catastrophic. Players just leave.”
Not everyone is following the trend
Some operators are choosing a different path. Hollywoodbets has made a deliberate decision to maintain maximum RTP levels in the UK, refusing to pass the tax burden on to players. The operator has even created a dedicated category on its UK site directing players to the highest-RTP games in its inventory — a transparent value signal in a market where such clarity is increasingly rare.
It is a strategy that reflects what trusted online casinos have always understood: that long-term player loyalty is built on fairness and value, not short-term margin extraction. In a crowded market, trusted online casinos that maintain competitive RTPs and transparent practices are better positioned to retain the high-value players that other operators are quietly losing to offshore alternatives.
The bottom line
Cutting RTP may protect margins in the short term. But if the UK follows Germany’s trajectory — where lower RTPs drove players to the black market faster than they generated incremental revenue — the strategy risks costing operators far more than the tax they were trying to offset.
