How long will my money last on slots?

How long will my money last on slots? The short answer

There is no single answer, because slot results are random. There are, though, two firm numbers that bracket what can happen and a third that explains why sessions vary so much. Knowing all three lets you set a realistic budget and time limit before you play, rather than being surprised by how quickly (or slowly) a balance moves.

This guide works through the maths with pound examples. It sits alongside our slot budget planner in the slot machine guides, which covers how much to set aside in the first place.

Three ways to measure how long slot money lasts

The worst case and the average are easy to calculate for any game. The typical session is harder, because it depends on how a game spreads its prizes, which is what volatility describes.

The worst case: your balance divided by your stake

If no spin returned anything, your money would last exactly balance ÷ stake spins. That rarely happens over a long run, but short losing streaks are common, so it is the right figure for checking whether a stake suits your budget.

UK online slots must allow at least 2.5 seconds between the start of one spin and the next, under the Commission’s responsible product design standard (opens in a new tab). The rule is enforced: in June 2026 a supplier paid £122,835 after slots ran too fast (opens in a new tab). At that maximum pace, 100 spins take a little over four minutes. Most people play more slowly, but the arithmetic shows how fast a small balance can go.

• £10 at 10p: 100 spins, at least 4 minutes 10 seconds.
• £20 at 20p: 100 spins, at least 4 minutes 10 seconds.
• £20 at £1: 20 spins, at least 50 seconds.
• £50 at £2: 25 spins, just over a minute.

The average case: how RTP stretches slot money

In reality some spins pay, and those wins go back into play. RTP tells you how much is lost on average per pound staked: the house edge. On a 96% game, every £1 staked loses 4p on average. So the average total you can stake before a balance runs out is balance ÷ house edge.

For £20 on a 96% slot, that is £20 ÷ 0.04 = £500 of total stakes. At 20p a spin, £500 is 2,500 spins. The same sum shows why the theoretical loss per spin is so small (0.8p at 20p) while the balance can still vanish: it is the average, not the path.

The RTP in this formula should be the one in the game’s help screen, because casinos can run different RTP versions. Our guide to finding a slot’s RTP shows where it is.

Why your slot money rarely lasts the ‘average’ time

The average of 2,500 spins is real, but it is a mean across all possible sessions, and it is pulled upwards by a minority of long sessions that follow a large win. Many more sessions end well short of it. The gap between typical and average grows with volatility, which our page on standard deviation measures more formally.

So if a balance disappears in ten minutes on a high-volatility game, nothing has gone wrong; that is a normal outcome for that kind of design. Nor does a quick loss mean the next session is ‘due’ to last longer.

What slots cost per hour at UK stakes

Time is often a better way to think about it than spins. Average hourly cost = spins per hour × stake × house edge. The table assumes 600 spins an hour (one every six seconds, an illustrative pace) on a 96% slot.

Dividing a budget by the hourly figure gives an average duration: £20 at 20p and £4.80 an hour is a little over four hours on average. Treat that as the upper middle of a very wide range, not an expectation. The spin speed rule and our page on what a slot costs per hour go further into pace.

Worked examples: £20, £50 and £100 on slots

• £20 at 10p on a 96% low-volatility slot: worst case 200 spins; average 5,000 spins. Low volatility keeps most sessions nearer the average than on a high-volatility game.
• £50 at 50p on a 96.21% high-volatility slot such as Book of Dead: worst case 100 spins; average £50 ÷ 0.0379 ≈ £1,319 staked, or about 2,600 spins. A long quiet spell can end the session far sooner.
• £100 at £1 on a 98% slot such as Blood Suckers: worst case 100 spins; average £100 ÷ 0.02 = £5,000 staked, or 5,000 spins. The higher RTP halves the average cost per spin compared with a 96% game.

Our page on how long £100 lasts on slots runs the same sums for more stakes, and the slot cost calculator handles any combination.

What changes how long slot money lasts, and what doesn’t

If you would like a session to cost less per hour, four choices move the numbers. None of them changes the house edge in your favour; they change how fast it applies.

• Stake: halving the stake halves the average hourly cost and doubles the worst-case spins.
• RTP: a 98% game costs half as much per spin on average as a 96% one.
• Volatility: lower volatility narrows the spread, so sessions are less likely to end very quickly.
• Pace and breaks: fewer spins an hour means a lower hourly cost.

Things that make no difference: the time of day, how long since the last big win, stopping the reels early, or switching machines because one seems ‘cold’. On games with adjustable paylines, the number of lines changes stake per spin, not the odds.

How to estimate how long your own money will last

1. Note your session budget and the stake you plan to use.
2. Divide budget by stake for the worst-case number of spins.
3. Find the RTP in the game’s help screen and work out the house edge (100% minus RTP).
4. Divide budget by (stake × house edge) for the average number of spins.
5. Estimate your pace in spins per hour and convert both figures into time.
6. Adjust your expectations for volatility: closer to the worst case on high-volatility games.
7. Set your time limit and money limit on the site before you start.

How long money lasts on pub and arcade slot machines

The same formulas work on land-based machines, with the machine’s displayed target RTP in place of the help-screen figure. Stakes are capped by category under the Gambling Commission’s gaming machine categories (opens in a new tab): £1 a play on a Category C pub machine and £2 on Category B3 machines in adult gaming centres, bingo halls and betting shops. £20 on a pub machine at full stake is 20 plays in the worst case. Our guide to UK slot machine categories lists every limit.

How offer spins fit into the sums

Free spin offers give a fixed number of spins at a fixed value, so their length is easy to work out. The offers below are for new customers aged 18+, terms apply, and each first needs a real-money deposit and qualifying play from your own balance, which belongs in your budget.

• Coral: deposit and bet £10+ on slots for 100 free spins at 10p (£10 of spins) on selected games. You have 48 hours to accept them and 7 days to use them, and free spin winnings carry no wagering. Available from 1 October 2026 until 1 February 2027, with certain payment methods not qualifying.
• Ladbrokes: deposit and play £10+ on slots for 50 free spins a day for 10 days, up to 500 at 10p (£50 of spins). Claim by 23:59 each day; each batch lasts 7 days with no wagering. Some payment methods excluded.
• PlayOJO: a first deposit of £10+ gives 80 free spins on Big Bass Bonanza at 10p (£8 of spins), no wagering, winnings paid in cash; Northern Ireland excluded.

At the minimum spin time, 100 spins take a little over four minutes, so these are short sessions rather than long ones. Coral and Ladbrokes are run by the same operator; check the terms before claiming at both, and search each lobby for eligible games. See our Ladbrokes free spins page for how the daily spins are released.

18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: plan a slot budget. Free, confidential help: National Gambling Helpline 0808 8020 133.