TLDR
For most players, most of the time, no. A bonus buy does not give you better odds. It usually gives you the same or slightly worse odds, packed into far fewer, far bigger swings. You pay a fixed price (commonly around 100x your stake) to skip straight to the bonus round, and in exchange your bankroll rises and falls much faster than it would in the base game.
That can be fun. It is not a shortcut to winning. The house edge is still there, the buy price already has that edge baked in, and on many games the bonus-buy version carries a fractionally lower RTP than playing normally. If you go in expecting to grind out a profit by buying features, the math is quietly working against you the whole time.
What is a bonus buy?
A bonus buy (also called a feature buy) is a button on a slot that lets you pay a set multiple of your stake to trigger the bonus round instantly, instead of spinning the base game and hoping the feature lands on its own.
The price is usually shown as a multiplier of your current bet. A common figure across the industry is around 100x the stake, though it varies by game. So:
- At a $0.20 stake, a 100x buy costs $20.
- At a $1 stake, that same buy costs $100.
- At a $5 stake, it is $500 a click.
That last line is the part people underestimate. A bonus buy turns a slot into a high-stakes game whether or not you meant to play one. You are no longer risking one bet at a time. You are risking a hundred bets, resolved in one animation.
Do bonus buys have a lower RTP than the base game?
Often, yes, by a small amount. And when it is not lower, it is almost never higher in your favour.
Here is why. The published RTP (Return to Player) is the share of all wagered money a game is designed to pay back over the long run. A studio designs the base game and the bonus-buy option as two slightly different math models. Independent testing labs such as GLI, eCOGRA, and iTech Labs certify both. On plenty of games the two RTPs are close, within a fraction of a percent of each other. But when they differ, the buy version is frequently the one set a touch lower.
Think about what you are actually paying for. When you buy the bonus, you pay purely for the feature outcome. The buy price is calculated from the average value of that feature, then the house edge is added on top. You are buying the bonus at a markup, by design.
So the idea that buying the bonus "gets you to the good part faster" is only half true. It gets you to the bonus faster. It does not improve the odds of that bonus, and on many titles it slightly worsens the return.
Why bonus buys drain a bankroll faster
Even if the RTP were identical, a bonus buy would still be riskier than base play. The reason is volatility, how the return is spread out.
RTP tells you how much comes back over millions of spins. It says nothing about the road to get there. A bonus buy compresses your session into a handful of large, all-or-nothing events. Two outcomes dominate:
- A weak bonus that pays back a fraction of what you spent.
- A big bonus that pays for several buys at once.
Most buys land closer to the weak end, and the rare big hit is what keeps the average up. A losing streak that would have been ten small base-game spins becomes ten $20, $50, or $100 hits in a row. The swings are not just bigger, they are faster, and fast swings are how a bankroll disappears before you have noticed.
If you want to see this in numbers rather than take my word for it, run a few buy prices and stake sizes through the calculator below. Watching how quickly the balance line drops is more convincing than any paragraph.
See how bonus-buy stakes burn a bankrollTry it free →
When can a bonus buy make sense?
There are honest reasons to press the button. None of them are "to make money."
- Testing a game. If you are reviewing a slot or want to see its bonus without grinding a thousand base spins, a buy is an efficient way to see the feature. That is closer to research than gambling, as long as you cap the spend.
- Entertainment, priced knowingly. If the base game bores you and the bonus is the whole appeal, a buy delivers the part you enjoy. Treat the price as the cost of the entertainment, not an investment.
- You have set a hard limit first. A single buy inside a session budget you decided in advance is a controlled choice. A string of buys chasing back the last one is the opposite.
The common thread: a bonus buy is only sensible when you already accept the money is gone. The moment it becomes a strategy to recover losses, the variance and the built-in edge combine against you.