RTP calculator: what a slot's return means for your stake
Return to player is a percentage. This page turns it into shillings: put in the RTP a provider publishes, the amount you stake on one spin and how many spins you have in mind, and read off the house edge and the expected loss over those spins. The figures are a long-run average and are labelled as the illustration they are; a single session can land far from them.
Your figures
- House edge100 minus the RTP: the share of all stakes the game keeps over the long run.
- Expected lossStake per spin, times spins, times the house edge. A long-run average, not a forecast.
- Expected returnWhat the RTP says comes back on average over that many spins. Illustrative example.
Illustrative example: the same sums at 94%, 96% and 97% RTP
Three round RTP figures that bracket what most slot information screens show, applied to four stake and spin combinations. None of them is the figure of any particular game.
| Stake per spin | Spins | Total staked | Expected loss at 94% RTP | At 96% RTP | At 97% RTP |
|---|---|---|---|---|---|
| KES 20 | 100 | KES 2,000 | KES 120 | KES 80 | KES 60 |
| KES 50 | 200 | KES 10,000 | KES 600 | KES 400 | KES 300 |
| KES 100 | 500 | KES 50,000 | KES 3,000 | KES 2,000 | KES 1,500 |
| KES 200 | 1,000 | KES 200,000 | KES 12,000 | KES 8,000 | KES 6,000 |
Expected loss is the long-run average: total staked multiplied by (100 minus RTP) percent. Any single session of this length can finish far above or far below these figures.
What the calculator does
Three inputs, three outputs. You enter the RTP a provider publishes for a game, the amount you stake on one spin and how many spins you have in mind. The page returns the house edge (100 minus the RTP), the expected loss over that many spins (stake multiplied by spins multiplied by the house edge) and the expected return (the rest). Every result is labelled as an illustration because that is what it is: the long-run average, not the outcome of your session.
Where the RTP comes from
Return to player is a figure the game's maker publishes. Pragmatic Play, for example, lists RTP 96.48% on its own page for Sweet Bonanza and 96.50% for Gates of Olympus, as read on 28 October 2026. In Kenya the random number generator used for all games of chance must be certified by the Authority or its approved agent, and the theoretical return to player disclosed to the Authority (Gambling Control (Conduct of Gambling Operations) Regulations, 2026, L.N. 112 r.45(2)). If the game information screen of the version in front of you shows a different figure from the provider's page, use the figure on the screen.
The maths, written out
Illustrative example: a stake of KES 50 for 200 spins puts KES 10,000 through the game. At 96% RTP the house edge is 4%, so the expected loss is 10,000 multiplied by 0.04, which is KES 400, and the expected return is KES 9,600. At 94% the expected loss is KES 600; at 97% it is KES 300. The table above shows the same sums for other combinations.
Why one session is nothing like the average
RTP is an average over millions of spins. In 200 spins the result is dominated by which symbols happen to land, and the spread is wider still on a high-volatility game, where wins are rarer and larger. A session can end well above the expected return or with the whole stake gone, and neither outcome says anything about the next session: each spin is an independent draw from the certified random number generator. The calculator does not estimate that spread, because doing so honestly needs the game's full paytable and hit frequencies, which providers do not usually publish.
What the calculator is not
It is not a strategy, a prediction or a reason to play. It converts a percentage you cannot change into shillings you can picture, and that is all. If the number it returns worries you, the responsible gambling page describes the deposit and loss limits every licensee must offer (L.N. 112 r.84) and the self-exclusion route under s.115 of the Act.
Questions and answers
Does a 96% RTP mean I get 96% of my money back?
No. It means that across a very large number of spins the game pays back 96% of all stakes in total. Your own session can return far more or far less. Illustrative example: KES 1,000 across 50 spins has an expected loss of KES 40, but a single 50-spin session rarely lands close to it; it may end with a large win or with nothing left.
Where do the figures 94, 96 and 97 come from?
They are round examples chosen to bracket the RTPs commonly printed in slot game information. They are not the figures of any particular game or operator. Replace them with the RTP of the game in front of you, read from its information screen or the provider's own page.
Does the calculator include tax?
No. It works on stakes and RTP only. As at 1 July 2026 the Income Tax Act applies a 5% withholding tax to withdrawals made by punters (Third Schedule, Head B, paragraph 5(i)) and the Excise Duty Act charges 5% on amounts deposited for gambling (First Schedule, Part II, paragraph 4B, as amended by the Finance Act, 2026). Those apply to deposits and withdrawals, not to the game's RTP.
Is anything I type sent anywhere?
No. The calculator runs entirely in your browser, and what you type is not part of what the site's Google Analytics tag sends. What you type is not stored; closing the page discards it. The privacy page describes the site's position in full: no forms, no accounts, and analytics cookies only if you allow them.