How casino promotions work

How casino promotions work in the UK: the basic trade

Strip away the branding and every casino promotion has the same three parts. There is a qualifying action, such as signing up, depositing or staking a set amount. There is a reward, such as spins, bonus money, cash back or points. And there are conditions that decide what you can do with the reward and when it expires.

Casinos fund promotions from the house edge built into their games. A promotion is a marketing cost that the casino expects to recover over time from the players it attracts. That does not make offers worthless, but it does mean the long-run maths still favours the casino. A well-chosen promotion lowers the cost of entertainment you were planning anyway; it is not a way to earn.

The offers hub breaks promotions down by type, and the explainer on how casino bonuses work answers the most common questions briefly.

Types of casino promotion and how each one works

Each type has its own deep dive: how free spins work, first deposit bonuses, cashback bonuses and casino loyalty programmes.

The life of a casino promotion, from opt-in to withdrawal

Whatever the type, a promotion usually moves through the same stages. Knowing them helps you spot where things go wrong.

1. Check eligibility: age 18+, new or existing customer, location (some offers exclude Northern Ireland), and any one-per-household rule.
2. Opt in if required, by ticking a box at sign-up, choosing the bonus in the cashier or using the designated offer link.
3. Make the qualifying deposit with an eligible payment method; many offers exclude e-wallets and prepaid cards.
4. Complete any qualifying play, such as staking £10 on slots.
5. Receive and accept the reward within the stated window, for example 48 hours.
6. Use the reward within its expiry period on the eligible games.
7. Complete wagering if any applies, staying within the maximum bet.
8. Withdraw cash balances once conditions are met.

Most disputes trace back to steps 3, 6 or 7: an excluded payment method, an expired reward or a bet above the limit. Our casino welcome offer checklist turns this into a quick pre-claim check.

Promotion maths: worked examples with real UK offers

Here is how the numbers work on our partners’ current offers, checked on 5 October 2026. Averages use the published RTP where one game is named; actual results vary widely, and you can lose the whole deposit.

Free spins: average return

PlayOJO’s 80 spins on Big Bass Bonanza total £8 in stakes. At the game’s published 96.71% RTP, the long-run average return is about £7.74, paid as cash because there is no wagering. Many individual batches return less, some return nothing, and a few return more.

Deposit match: wagering cost

A £100 deposit at Casumo adds a £50 bonus. Wagering it 10x means placing £500 of bets within 7 days, at no more than £5 each. On a slot returning 96%, the average cost of £500 of play is about £20, though results swing widely around that figure. Our wagering calculator runs the numbers for any bonus.

How casino promotions work under the 2026 UK rules

Promotions are regulated through the Gambling Commission’s licence conditions, the advertising codes and consumer law. The biggest recent change came on 19 January 2026, announced in the Commission’s article on making gambling promotions safer and simpler (opens in a new tab).

The Commission gives its own example: a £10 bonus with 50x wagering would once have meant £500 of play before any withdrawal; under the cap the most is £100. Our pages on the 10x wagering cap and the mixed-product promotions ban go deeper, and before and after the 10x cap compares old and new offers.

The terms that decide what a promotion is worth

The CAP Code requires significant conditions to be stated in the advert itself, so the key terms should appear close to the headline, as the CAP guidance on promotional terms and significant conditions (opens in a new tab) explains. Our guide on how to read bonus terms covers every clause in detail.

How promotions work for existing customers

After the welcome offer, casinos use smaller, recurring promotions: reload bonuses, daily spins, prize draws, tournaments and loyalty rewards. The same 10x cap and mixed-product ban apply. What has changed is that rewards can no longer be tied to playing for a set length of time or at a set frequency, so “log in every day for seven days to get a bigger reward” style mechanics are gone.

Existing-customer offers are also more personalised, which is why your account may show different deals from a friend’s. If a casino has seen signs that you may be experiencing harm, it must stop offering you new bonuses. Our guide to offers for existing customers and the casino promotions calendar show what to expect through the year.

How casinos tell you about promotions, and how to stop them

From 1 May 2025, UK casinos have had to ask you at sign-up which products you want marketing for (casino, betting, bingo) and through which channels (email, SMS, phone), with everything off unless you opt in. Existing customers were asked to confirm their preferences at their next login after that date. You can change your choices at any time in account settings.

The Commission’s guidance on stopping gambling marketing texts and emails (opens in a new tab) explains your options, and our guide to opting out of casino marketing walks through the settings.

How to judge whether a casino promotion is worth claiming

1. Would you play anyway? A promotion only helps if it reduces the cost of play you had already budgeted for.
2. Convert spins into pounds: number × spin value.
3. Check wagering: zero is simplest; at 10x, multiply the bonus by 10 to see the play required.
4. Check the max bet, eligible games and expiry against how you actually play.
5. Look for a winnings cap.
6. Confirm your payment method qualifies before depositing.
7. Set a deposit limit and a time limit before you start.

For a structured comparison, see how to compare casino bonuses and our verdict on whether free spins are worth it.

Three current promotions that show how each type works

These partner offers from UK-licensed casinos were checked on 5 October 2026. Each is for people aged 18 or over, and full terms apply. Choose only if it fits play you had already planned and budgeted for.

• Coral (bet and get spins): new players who deposit and bet £10 or more on slots get 100 free spins on selected games, 10p each. Accept within 48 hours and use within 7 days; spin winnings carry no wagering. Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. The offer runs from 1 October 2026 to 1 February 2027.
• PlayOJO (deposit spins, no wagering): new UK customers, excluding Northern Ireland, who make a first deposit of £10 or more get 80 free spins on Big Bass Bonanza at 10p each. Winnings are paid in cash. Only available through the designated offer link and not combinable with other offers.
• Casumo (deposit match): new customers who opt in get a 50% bonus up to £100 on a first deposit of £20 or more. Wager the bonus 10x within 7 days, with a £5 maximum bet while it is active. Game, play and payment restrictions apply.

Compare every current deal on our latest casino offers page, or browse more explainers in our casino guides.

18+. Gambling should be entertainment that costs money, not a way to make it. Set a deposit limit before you play: how to set deposit limits. Free, confidential help: National Gambling Helpline 0808 8020 133.