guide
Bonus Buy Slots Explained: What You Pay, What You Get, and Where They Are Banned
A bonus buy (feature buy) lets you skip straight to a slot's bonus round by paying a fixed multiple of your stake — typically 50-100x. This guide covers the math behind the cost, why bonus-buy RTP can differ from the base game, and the jurisdictions that have banned the mechanic.
A bonus buy — also called a feature buy or bonus purchase — lets you pay a fixed multiple of your stake, typically between 50× and 100× your bet, to enter a slot’s bonus round immediately, bypassing the base game entirely. You are not buying an improved outcome; you are buying direct access to the part of the game that generates the highest variance results.
This page contains affiliate links. Commissions we earn never influence ratings or placement.
How a Bonus Buy Works
In a standard slot session, bonus rounds — free spins, pick-and-click features, hold-and-spin mechanics — are triggered at random during base game play. Depending on the game’s design, you might wait dozens or hundreds of spins before the bonus lands. Bonus buy removes that wait.
When a game offers the feature, a button is presented in the game UI. Pressing it charges your balance for a fixed multiple of your chosen stake and loads the bonus round directly. The cost is calculated by the studio based on the expected value of the bonus round plus a margin.
Example: You are betting £1 per spin. A bonus buy at 80× costs £80. That purchase funds one entry into the free spins round. The result of the free spins is still determined by the RNG — the purchase guarantees access to the round, not the outcome.
The Math Behind the Cost
Bonus buy pricing is not arbitrary. Studios derive it from the expected value (EV) of the bonus round. If a free spins bonus, on average, returns 60× the triggering stake when triggered organically, the studio prices the feature buy above that figure to maintain a house edge on the purchase itself.
The total game RTP and the bonus buy RTP are two distinct figures:
- Base game RTP includes the probability-weighted contribution of all components: base game wins, scatters, retriggers, and bonus rounds.
- Bonus buy RTP reflects only what the bonus round itself returns, averaged across millions of simulated rounds. Because you are bypassing the base game entirely, the mathematical context is different.
In practice, bonus buy RTP is often published as equal to or slightly lower than the base game RTP for that same game — studios structure this intentionally. If the bonus buy RTP were meaningfully higher, rational players would only use the feature buy and never play the base game, which would distort the studio’s overall model. Where you do see small differences, the bonus buy figure may be slightly lower — reflecting the additional margin the studio applies to the convenience premium.
The key takeaway: a higher sticker cost for a bonus buy does not mean a better return. What matters is the published RTP for bonus buy mode, and whether that figure is verifiable through the game’s paytable or an independent audit.
For background on how RTP figures work in slots generally, see our guide to slots RTP and volatility.
Variance and Why Bonus Buys Feel Different
Bonus rounds are typically where a slot’s highest multipliers and biggest win potential sit. Entering bonus rounds repeatedly — rather than grinding through base game play — concentrates your session’s variance. You will experience more high-value outcomes than in base game play, but also the full downside: a run of weak bonus results can deplete a balance quickly when each entry costs 80× to 100× stake.
This is not a flaw in the mechanic; it is the intended experience. Players who use bonus buys are paying to trade session length for variance concentration. That is a legitimate preference, but it is important to understand the financial tempo: a 100× feature buy at a £2 stake costs £200. Three consecutive poor bonus outcomes at that stake size can result in losses of £600 before any significant win occurs.
Jurisdictional Restrictions
Bonus buy is not available everywhere. Regulators in several markets have restricted or banned the mechanic:
| Jurisdiction | Status | Effective date |
|---|---|---|
| Great Britain (UKGC) | Banned — UK-licensed operators cannot offer bonus buy | October 2021 |
| Sweden (Spelinspektionen) | Restricted — available only with enhanced player protection measures | Ongoing |
| Ontario (iGO) | Permitted under general RTP disclosure rules | Ongoing |
| Malta (MGA) | Permitted under standard licensing | Ongoing |
| Most crypto / offshore | Permitted — regulation varies significantly | Varies |
The UK ban is the most significant in the English-speaking market. The UK Gambling Commission concluded that bonus buy features increased the risk of harmful gambling behaviour by accelerating play and increasing expenditure velocity. Any operator holding a UK remote gambling licence cannot offer the mechanic, regardless of where the game was developed or who the software provider is.
For players outside the UK, availability depends on the licensing framework of the operator you are using. Crypto casinos operating under offshore licences (Curaçao, Anjouan, and similar) typically make bonus buy available without restriction, but those licences carry fewer player protections. See our notes on wagering requirements and bonus terms for context on how operator licensing affects the terms attached to play.
Where Bonus Buy Is Available Among Reviewed Operators
The following affiliate-linked operators are reviewed on this site and make bonus buy features available where legally permitted. Ratings reflect our editorial assessment across licensing, payment, and support criteria — not endorsement for any specific play style.
Affiliate disclosure: some links below are affiliate links. We earn a commission if you sign up; this does not affect our ratings.
- Stake — rated 4.4 / High Trust. Broad game library including most major studios with bonus buy where available.
- BitStarz — rated 4.2 / High Trust. Extensive slots catalogue; filter by provider to find bonus buy titles.
- Cloudbet — rated 4.2 / High Trust. Crypto-first; standard slot suite with bonus buy available on supported titles.
- BC.GAME — rated 4.0 / Medium Trust. Large game library; bonus buy availability depends on individual game and provider.
Availability of bonus buy on any specific title depends on the game provider’s own region configuration, not only the casino’s licence. Confirm in the game itself before assuming access.
Honest Bottom Line
Bonus buy is a mathematically neutral convenience feature that changes when you access variance, not whether the house has an edge. The house edge on a bonus buy purchase is embedded in the pricing, just as it is in the base game. Paying 80× stake to enter a bonus round does not give you better odds — it gives you faster access to the same odds that were always there.
The feature is genuinely useful for players who want to experience a game’s bonus mechanic without extended base game play, and who understand that the cost is real and the outcome is uncertain. It is not a strategy and it is not a shortcut to profit.
Real money at stake, every session. Play within your limits, verify the operator holds a valid licence in your jurisdiction, and treat the published RTP as a long-run statistical average, not a session-level expectation.
18+. Gambling involves real financial risk. Play only where it is legal in your jurisdiction.
Sources
FAQ
- Does a bonus buy guarantee a big win?
- No. Purchasing the feature buy takes you directly into the bonus round, but the outcome of that round is still determined by a random number generator. You can trigger a bonus round through a feature buy and still receive a payout lower than the price you paid. The feature buy eliminates the waiting involved in reaching the bonus organically, not the risk of a poor outcome.
- Why is bonus buy RTP sometimes different from base game RTP?
- Slot studios calculate and publish separate RTP figures for bonus buy mode because the game is being entered from a different state. In base game play, the RTP includes the probability of never reaching the bonus. In bonus buy mode, every spin is already in the bonus state, so the RTP reflects only what the bonus round itself returns on average over millions of simulated rounds. These two figures can differ by several percentage points depending on how the studio structured the math model.
- Is bonus buy available to players in the UK?
- No. The UK Gambling Commission banned bonus buy and feature buy mechanics for UK-licensed operators in October 2021, under rules designed to reduce harmful product features. Any operator licensed in Great Britain cannot legally offer the feature to players accessing via a UK licence, regardless of where the underlying game was developed.