Where a £100 deposit lasts longest

A £100 deposit buys about six hours at a mid-stakes slot and more than sixty hours at a live blackjack table. A study of 30 UKGC-licensed casinos turned that gap into hard numbers, staking identical amounts on slots, roulette, blackjack and live dealer games, then working out the average hourly cost from each game's published return-to-player figure.

Expected loss is not the same as the money that leaves your balance tonight. Variance decides that. The sample covered 30 operators and more than 200 titles, and the analysts recorded the RTP printed in each game's rules screen rather than a marketing figure, ignoring free spin rounds that pay from a separate pool.

How the study measured an hour of play

The researchers staked £1 a spin on slots, £5 a round on live roulette and £5 a hand on live blackjack. Slots ran at 400 spins an hour, roulette at 40 spins and blackjack at 60 hands, which reflects the pace a dealer sets at a real table.

Return-to-player figures came from the games themselves. Slots across the sample averaged 96%, jackpot titles dropped to 90%, single-zero roulette sat at 97.3% and blackjack played to basic strategy reached 99.5%.

Stake multiplied by rounds multiplied by the house edge gives the cost of an hour. A £1 slot spin at 96% RTP costs about £16 an hour. A £5 blackjack hand costs about £1.50. The slot empties a balance ten times faster than the table.

Live tables cost the least per hour

Pace explains most of the difference. A dealer shuffles, deals and waits while you decide, and the pause between rounds leaves your balance alone. Software slots have no pause, no waiting and no dealer to slow the game down.

Live roulette at £5 a spin, 40 spins an hour, puts £200 through the wheel with a 2.7% edge, so the hour costs £5.40. The American wheel with its double zero lifts the edge to 5.26% and the hourly cost to £10.50 on the same stake. Check which wheel your table uses before you sit down.

The pace makes more sense once you know how live casino tables work: a dealer runs to a fixed speed, the table minimum caps your exposure, and nothing on the screen invites you to raise your stake mid-session. Baccarat runs the same way, and the banker bet at a 1.06% edge turns a £5 hand into about £3.20 an hour.

Slots cost the most, and your stake decides how much

Slots took the top of the cost table in every category the study measured. A £1 spin at 400 spins an hour turns over £400, and a 4% house edge takes £16 of it. Move to £2 a spin and the hourly cost doubles to £32 without changing anything else.

Autoplay and turbo modes cut the gap between spins. The study counted 600 spins an hour on titles with both switched on, which pushes a £1 spin to £24 an hour.

Progressive jackpot games feed part of every stake into the prize pool, and their base game RTP sits near 90%. A £1 spin at that rate costs £40 an hour while the jackpot stays out of reach for almost everyone who chases it.

Volatility changes the ride, not the hourly cost

Two slots can share a 96% RTP and behave nothing alike in a session. High-volatility titles pay big, rare wins and leave long dry spells. Low-volatility titles pay small wins at a steady rate. Over 400 spins the hourly cost lands near £16 either way, but a high-volatility game can drain £100 in twenty minutes and hand back £300 on a single spin. Budget for the swings, not the average.

Reading RTP figures on UK sites

UKGC rules require operators to publish the return-to-player figure for every slot they offer. You find it in the game's help menu or info tab, and the number decides your hourly cost before you spin once. Providers ship different versions of the same title to different sites, so compare the RTP on your operator's copy against a rival's.

A two-point gap between a 94% version and a 96% version costs £8 an hour on £400 of turnover. Across a month of play, the version on your screen matters more than the size of your welcome bonus.

Bonus terms rewrite the maths

A 35x wagering requirement on a £20 bonus asks you to bet £700 before you withdraw a penny of it. Slots count 100% toward that target in most bonus terms. Live roulette and blackjack often count 10% or nothing at all, so a £5 live hand that costs you little per hour also moves your wagering total by 50p.

Max bet clauses bite harder. Break the £5 cap on a single spin while a bonus is active and the operator can void the bonus and any winnings it produced. A win cap of £100 on a £20 bonus limits what a good run is worth. Read the weighting table and the cap on the terms page before you opt in.

Trust matters as much as terms. Check the UKGC licence number in the site footer against the Commission's public register, then read what paying customers say about withdrawal times. Type Mr Green Casino legit into a search engine and the first results are player review pages, which tell you more about how a site pays than any welcome banner does. An operator with a current licence and a clean payout record beats an extra 20 spins.

What to check before you deposit

A UKGC licence tells you the operator follows rules on fair games, complaints and advertising. The register lists every licensed brand, and the licence number appears in the site footer.

Payment methods decide how fast you get money back. Debit cards from Visa and Mastercard work at every UK site, PayPal and Apple Pay or Google Pay clear deposits in seconds, and open banking transfers through Trustly skip the card networks altogether. Paysafecard suits anyone who wants a hard spending cap, and UK operators decline credit cards at the checkout, a rule in force since April 2020.

Test the cashout before you commit serious money. Deposit £20, play through a small amount, then withdraw. A site that processes the payment within a day handles larger sums the same way, and one that stalls a £20 request will stall a £500 one.

Responsible gambling tools sit alongside the payments. GamStop excludes you from every UKGC-licensed site in one step, BeGambleAware and GamCare run free support lines, and deposit limits take a few minutes to set in your account. A limit set before your first spin holds better than one set after a losing run.

The monthly cost of two hours a week

Cost per hour comes down to the game you pick and the stake you set, and neither changes when a bonus lands in your account. Choose the game and the stake first, then compare welcome offers against that budget.