How to opt in to a casino bonus on an app depends on where the operator puts the switch: a selector during sign-up, a toggle in the cashier at your first deposit, an Opt in button on the promotions tab, or an Accept button in the inbox. Opt in before you deposit wherever you can, and check the bonus shows as active before you play.
Some bonuses need a deliberate opt-in; deposit without it and the offer may be lost.
Casumo's 50% match needs an opt-in and a first deposit of £20 or more. 18+, terms apply.
10bet asks you to choose the casino welcome bonus at sign-up, then deposit within 7 days.
Opting in brings rules with it, such as Casumo's £5 maximum bet while the bonus is active.
Bonus opt-ins and marketing opt-ins are separate settings.
Where opt-ins live
Sign-up, cashier, promotions tab or inbox
Best timing
Before or during the qualifying deposit
Wagering cap (UK)
10x from 19 January 2026
Proof it worked
Bonus shown as active in your account
Promo code needed (partners)
No
How to opt in to a casino bonus on an app, step by step
An opt-in is simply your agreement to take a bonus and its terms. Casinos ask for it because bonuses come with restrictions you might not want, and UK rules expect players to understand those terms before they're bound by them. The general sequence on a phone is:
Read the offer's key terms on the promotions page or registration screen before signing up.
During registration, select the welcome offer if the app shows a bonus choice, and leave it selected.
Open the cashier for your first deposit and check whether a bonus toggle or dropdown appears. Make sure the right offer is chosen.
Deposit at least the minimum the offer states, with a payment method it accepts.
Confirm the bonus appears as active in your account, bonus or rewards area before you start playing.
If any step is unclear, ask live chat before depositing. Fixing a missed opt-in afterwards is at the operator's discretion, and some terms say a bonus can't be added once play has started. Our opt-in glossary entry gives the formal definition.
The different opt-in buttons you'll meet in casino apps
Method
Where it appears
What to watch for
Sign-up selector
Registration screens, often near the end
Combined sports and casino apps may preselect a sports offer
Cashier toggle or dropdown
Deposit screen, above the amount box
Easy to scroll past on a small screen
Promotions tab button
Promotions or offers section of the app
Usually needs tapping before you deposit or play
Inbox or pop-up Accept
After the trigger is met
Often has a time limit
Promo code box
Registration or cashier
Not needed for any of our partner offers
On a phone, the cashier toggle is the one people miss most. In portrait, the deposit sheet often shows the amount and the payment method first, with the bonus option further down. Scroll the whole sheet before tapping Deposit, or rotate to landscape on a tablet to see it all at once.
Opting in to the Casumo welcome bonus
Casumo's welcome offer is a 50% bonus up to £100 on the first deposit for new customers aged 18+, with an opt-in required and a minimum deposit of £20. The bonus must be wagered 10x within 7 days, the maximum bet is £5 while a bonus is active, and game, play and payment restrictions apply.
Register in the Casumo app and complete verification.
Before or during your first deposit, opt in to the welcome bonus where the app offers it.
Deposit £20 or more with a payment method the terms allow.
Check that the bonus is shown as active, then play eligible games at £5 a spin or less.
Choosing the 10bet casino welcome bonus at sign-up
10bet's casino offer is a 100% match up to £25 for new UK customers aged 18+. You choose the casino welcome bonus when you sign up and make your first deposit within 7 days. The bonus must be wagered 10x on slots within 3 days, and bonus winnings are capped at £1,000.
Because 10bet's app combines sports betting and casino, the choice at registration matters. Pick the casino offer rather than any sports option. A £25 deposit brings a £25 bonus and £250 of slot wagering to complete in 3 days; a £10 deposit brings £10 and £100 of wagering. Full terms are on our 10bet welcome offer page, and our 100% casino app bonus page compares similar matches.
Accepting a bonus versus opting in
Some offers skip the opt-in and ask for acceptance once you've qualified. Coral's welcome offer works this way: new players aged 18+ who deposit and bet £10 or more on slots get 100 spins at 10p on selected games, which must be accepted within 48 hours and are valid for 7 days, with no wagering on winnings. The decision point comes after the trigger rather than before it, but missing it still loses the offer. Our guide on how to claim free spins in a casino app covers spin offers in detail.
Why timing matters: opt in before you deposit
Many bonus terms link the offer to a specific deposit, usually the first. If you deposit and then go looking for the opt-in, that deposit may no longer count. Opting in after you've started playing is riskier still, because the cash you've already staked can't be turned into a bonus retrospectively.
The safe order is: read the terms, opt in, deposit, confirm. If an app only shows the opt-in after a deposit, the terms will say so; follow them literally. A minute spent checking can save you contacting support afterwards.
None of our partner offers needs a promo code, so if an app screen asks for one, leave it blank rather than typing something you found elsewhere.
How to check your opt-in has worked
Your balance splits into cash and bonus, or a bonus amount appears beside it.
An active bonus or wagering progress bar appears in the account or bonus section.
A confirmation message lands in the app inbox or your email.
In some apps, excluded games carry a label or are greyed out while the bonus runs.
When it can make sense not to opt in
A bonus isn't compulsory, and declining one is a legitimate choice. Wagering requirements tie up your cash and restrict what you can play, and a withdrawal request while a bonus is active can forfeit it under many terms. If you want to play table games, bet above £5 a spin (where your age allows), or withdraw at any moment, playing without a bonus may suit you better.
Changed your mind? Many apps let you forfeit an active bonus from the bonus or account section; others ask you to contact support. Forfeiting usually removes the bonus balance and any winnings made with it, while your remaining cash stays yours. Read what the app says before confirming, because the action normally can't be undone.
Open the account or bonus section and find the active bonus.
Look for a Forfeit, Cancel or Remove option and read the warning text.
If there's no option, ask live chat to remove the bonus and confirm in writing what happens to your balance.
Bonus opt-ins are not the same as marketing opt-ins
Registration screens often show marketing consent tick boxes for email, SMS, push notifications and phone calls. Those control whether the operator can contact you with promotions; they don't opt you in to the welcome bonus. You can leave marketing switched off and still claim a welcome offer. Some later promotions for existing customers are sent by message, though, so switching everything off means you may not hear about them. Our guide to casino app marketing preferences shows where to change these settings.
Opt-in problems and how to sort them
Problem
Likely reason
What to do
No bonus option at deposit
Offer selected at sign-up, or account not eligible
Check the promotions tab, then ask live chat before depositing
Bonus missing after deposit
Opt-in skipped or excluded payment method
Contact support with a screenshot of the deposit
Wrong offer applied
Sports offer selected in a combined app
Ask support to switch it before you play
Opt-in button greyed out
Not a new customer, or offer not available in your region
The three offers below are the ones described on this page, starting with the two that need an opt-in or a choice at sign-up. Each works the same in the app and on the website. Bonuses don't change the odds of the games; set a deposit limit before you start. 18+, terms apply.
Casumo needs an opt-in for its 50% match and 10bet asks you to pick its casino bonus at sign-up, so both are covered step by step above; Coral's spins are accepted rather than opted into. 18+, new customers, terms apply.
Significant terms: 18+. New customers only. Opt-in required. 50% deposit bonus up to £100 on first deposit. Minimum deposit £20. 10x wagering on the bonus amount. Maximum bet or spin £5. Bonus valid for 7 days. Game, play and payment method restrictions apply. Full T&Cs apply. GamCare.org.uk
Read the Casumo reviewLicence: Recro Limited, UKGC account 61549. Offer checked 5 October 2026.
Significant terms: 18+. New UK customers only. Select the casino welcome bonus at sign-up and make your first deposit within 7 days. 100% bonus up to £25. Wager the bonus 10x on slots within 3 days. Maximum bonus winnings £1,000. Bonus is not redeemable. Full T&Cs apply. GamCare.org.uk
Read the 10bet reviewLicence: Blue Star Planet Limited, UKGC account 43173. Offer checked 5 October 2026.
Significant terms: 18+. New players only. Offer runs 01/10/2026 to 01/02/2027. Deposit (certain types excluded) and bet £10+ on slot games to get 100 free spins (selected games, £0.10 each, 48 hrs to accept, valid 7 days). No wagering on free spin winnings. Deposits by Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. Restrictions and T&Cs apply. GamCare.org.uk
Read the Coral reviewLicence: LC International Limited, UKGC account 54743. Offer checked 5 October 2026.
18+. Gambling should be entertainment that costs money, not a way to make it. Set a deposit limit before you play: how to set limits. Free, confidential help: National Gambling Helpline 0808 8020 133.
Frequently asked questions
What does opt in mean for a casino bonus?
It means actively agreeing to take a bonus, by tapping a button, ticking a box or choosing an offer, so that its terms apply to your account. Without the opt-in, an offer that requires one won't be credited even if you meet the deposit. Opting in also signs you up to the conditions, such as wagering, time limits and a maximum bet. Casumo's welcome bonus, for example, requires an opt-in and a £20 first deposit. 18+, terms apply. See the opt-in glossary entry for more.
Where is the opt-in button in a casino app?
It varies by app, but there are four usual places: a bonus selector on the registration screens, a toggle or dropdown on the deposit screen in the cashier, an Opt in button on the promotions tab, or an Accept button in a pop-up or the inbox. On a small screen the cashier option is often below the payment method, so scroll the whole deposit sheet before confirming. If you can't find it, ask live chat before depositing. Our guide to making a first deposit in a casino app shows the cashier layout.
Can I opt in to a bonus after I've deposited?
Sometimes, but don't count on it. Many welcome offers are tied to the first deposit, so if you deposit first and look for the opt-in afterwards, that deposit may not qualify. If you've already played with the cash, the bonus usually can't be added at all. Contact support straight away if you've missed an opt-in; they may help, but it's at their discretion. The safest habit is to opt in before tapping Deposit. Our page on casino app welcome bonuses covers the typical terms.
Do I have to opt in to free spins?
It depends on the offer. Some spins need an opt-in before you qualify, some are credited automatically when you meet the trigger, and some must be accepted afterwards. On our partner offers, PlayOJO's 80 spins arrive with a first deposit of £10 or more, Coral's 100 spins must be accepted within 48 hours of qualifying, and Ladbrokes' daily spins are claimed from the inbox before 23:59. Terms apply and players must be 18+; our casino app free spins page compares them.
What happens if I forget to opt in?
Usually the bonus isn't credited, and your deposit is treated as ordinary cash. That's not all bad: cash has no wagering or maximum bet rules, and you can withdraw it whenever you like. If you wanted the bonus, contact support before you play, explain what happened and send a screenshot of the deposit. They may add it manually, but they're not obliged to. Next time, check the deposit screen for a bonus option. Our casino app sign up bonus page explains common eligibility rules.
Can I opt out of a casino bonus once it's active?
Usually yes. Many apps have a forfeit or cancel option in the bonus or account section; others ask you to contact support. Forfeiting normally removes the bonus funds and any winnings made with them, while your remaining cash balance stays yours. Read the warning on screen before confirming, as the action generally can't be reversed. People often opt out to withdraw sooner or to play games the bonus excludes. Our guide to withdrawing casino app bonus winnings explains the knock-on effects.
Is opting in to marketing the same as opting in to a bonus?
No. Marketing consent controls whether a casino can send you promotions by email, SMS, push notification or phone; it doesn't claim any offer. You can decline all marketing and still opt in to a welcome bonus. The trade-off is that some existing-customer promotions are only announced by message, so you might not hear about them. You can change marketing choices at any time in your account settings. Our page on casino app notifications explains which alerts are useful.
Why can't I opt in to a casino bonus?
Common reasons are that you're not a new customer, that you already chose a different offer at sign-up, that the offer isn't available where you live, or that your account isn't fully verified. PlayOJO's welcome spins, for example, exclude Northern Ireland. Read the eligibility section of the terms, then ask live chat if it's still unclear. Our bonus terms guide explains the usual eligibility clauses.
Gambling can be addictive. Free, confidential help is available 24 hours a day from the National Gambling Helpline on 0808 8020 133. Get support from GamCare or NHS gambling support, or block yourself from all UK-licensed gambling sites with GAMSTOP.
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