100% Deposit Bonus Casinos in the UK
A 100% deposit bonus is one of the best casino bonuses you’ll find at online casinos in the UK – and it’s my absolute favourite promotion to look out for when playing the slots! As the name suggests, 100% deposit bonuses let you double your initial deposit – and today, I’ll be walking you through the best currently available to claim at casinos in the UK!
Best 100% Deposit Bonus Casino Sites 2025
Today, virtually all casinos offer some kind of matched deposit bonus — with 100% being the most common percentage offered. Below, I’ve put together a list of the best 100 deposit bonus casinos, all of which are licensed, secure, and offer fair bonus terms.
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I’ve personally played at all of the best online casino sites shown above – and this means they’ve passed a rigorous number of checks from the KasinoBonus team! If you see a 100% matched deposit bonus you like the look of simply hit “Play Now” to sign-up and make a deposit to get started!
What is a 100% Deposit Bonus?
A 100% deposit bonus is one of the most popular types of bonuses you’ll find at online casinos – and they’re often offered to new players, sometimes as part of a welcome bonus package. In short, a 100% matched deposit bonus means the casino will match your deposit amount in bonus funds – by 100%. So, if you deposit £100, you’ll receive an additional £100 in bonus money, giving you a total of £200 to play with.
These bonuses usually come with terms and conditions, like wagering requirements, game restrictions, and expiry periods, so it’s important to read the fine print before claiming. Still, a 100% deposit bonus can be a great way to double your bankroll and explore a casino’s game selection with less risk to your own money!
Types of 100% Deposit Bonuses
There are several types of 100% deposit bonuses, and below, we’ll explore some of the main types:
1. Welcome Bonus:
Welcome bonuses are usually offered to new players making their first deposit. A welcome bonus can also sometimes be part of a larger welcome package that can include free spins or additional deposit bonuses over multiple deposits.
2. Reload Bonus:
A reload bonus is typically offered to existing players – usually, as a reward for making another deposit. These can be one-off promotions or part of ongoing offers (e.g., weekly reloads).
3. Cashback-Based 100% Bonus:
Sometimes branded as a 100% bonus but structured so that if you lose your deposit, the casino refunds it as bonus credit. This type typically comes with lower wagering requirements but strict time limits – and you may be limited with the amount of cashback you can claim.
4. High Roller 100% Bonus:
A 100% high roller deposit bonus is aimed at players depositing large amounts – often $500 or more. These bonuses can have higher withdrawal limits (if any) and may come with tailored perks or VIP points.
How We Review Casinos
Here at KasinoBonus, we take great pride in our deposit bonus recommendations. We only ever recommend a casino if we’ve personally tested it ourselves—and this means making a real money deposit, playing the games, testing out the customer support facilities, and, where applicable, making a withdrawal.
My team and I use our first-hand experience to give you an honest, accurate account of what the casino has to offer—so you know exactly what to expect when playing yourself. We look at things like:
- Licensing and reputation
- Game selection (and providers)
- Payment options and cashout speeds
- Customer support facilities
- Gambling experience
Top UK Casinos With 100% Deposit Bonuses
Casumo is one of the UK’s leading online casinos – and has been for many years – and their new-player welcome bonus is one of the best around, in our opinnion! New Casumo customers can claim a generous 100% matched deposit bonus worth up to £100 – and in addition to this, you can also claim 50 Bonus Spins on Pragmatic Play’s Big Bass Bonanza! The wagering requirements for the deposit bonus are just 30x – very reasonable – and there’s no maximum cashout limit, either – so you can withdraw as much as you can win!
Here’s our top UK casinos offering 100% matched deposit bonuses right now:
| Casino Name | Bonus Details |
| Casumo | 100% matched deposit bonus up to £100 + 50 Bonus Spins |
| Pub Casino | 100% matched deposit bonus up to £100 |
| Luckster Casino | 100% matched deposit bonus up to £200 |
How 100% Matched Deposit Bonuses Work
A 100% deposit bonus means that the casino will match your deposit pound for pound, effectively doubling your playing balance. For example, if you deposit £50, you’ll receive an additional £50 in bonus funds, giving you £100 to play with! Plus, some online casinos even throw in some free spins alongside these promotions!
Now, if you play at one of the top real money online casinos we showed you earlier, you’ll be able to enjoy fair wagering requirements, (usually) no maximum cashout limits, and lightning fast withdrawals – so I’d strongly recommend choosing a casino shown on this page!
100% Deposit Bonus Terms and Conditions
Thankfully, most 100% matched deposit bonuses – especially those at fair online casinos like the ones shown here on this page – come with transparent terms and conditions. Still, it’s always worth understanding the terms before you begin playing – and some of the important ones to be aware of include:
- Wagering Requirements: Almost all deposit bonuses come with wagering requirements – and these determine the number of times you must play through your bonus funds before you can make a withdrawal.
- Game Restrictions: Some deposit bonuses come with game restrictions, which limits you to playing certain games only, while using your bonus funds.
- Time Frames: Most deposit bonuses will come with a time limit – and this means you need to use up the bonus – and complete the wagering requirements – within a set period of time.
- Max Bet Restrictions: Another common 100% deposit bonus requirement is a max bet restriction. This means you’re limited – while playing with bonus funds – on the amount you can bet per spin/round – and it’s common for this limit to be set at £5.
How to Claim a 100% Deposit Bonus
Claiming a 100% deposit bonus is usually quick and straightforward. Here’s a handy guide to get you started:
1. Register an Account
Sign up at the online casino offering the bonus – making sure to choose one of the trusted casinos listed here on this page! Make sure you enter your personal information accurately when you’re signing up to avoid verification issues later.
2. Find the Offer
Go to the promotions or bonuses section of the site to confirm the bonus is active. Some bonuses require opt-in, while others are applied automatically.
3. Enter a Bonus Code (If Required)
Some casinos require a promo or bonus code at the time of deposit. If there is one, be sure to enter it correctly during the deposit process.
4. Make a Qualifying Deposit
Deposit the minimum amount – which, at most UK casinos, is £10 – or, sometimes, £20. The casino will then match this amount with bonus funds.
5. Check Your Balance
Once your deposit is successful, the bonus should be credited immediately or shortly after. Your total balance will reflect both your deposit and the bonus amount.
6. Fulfill Wagering Requirements
Before you can withdraw any winnings from the bonus, you’ll need to meet the casino’s wagering requirements. These vary, so always check the terms and conditions.
Alternatives to 100% Deposit Bonuses
| Bonus | Bonus Calculation for £10 Deposit | Total Amount to Play With (£) |
| 200% deposit bonus | £20 for £10 | £30 |
| 400% deposit bonus | £40 for £10 | £50 |
| 500% deposit bonus | £50 for £10 | £60 |
| 600% deposit bonus | £60 for £10 | £70 |
| 1,000% deposit bonus | £100 for £10 | £110 |
| 300% deposit bonus | £30 for £10 | £40 |
| 50% deposit bonus | £15 for £10 | £15 |
Pros & Cons
✅ Pros
- ✅ Higher bonus amounts compared to no-deposit offers
- ✅ Unlocks access to welcome packages and VIP perks
- ✅ Often includes both bonus cash and free spins
- ✅ Great value for players who already plan to deposit
- ✅ Widely accepted across most online casinos
❌ Cons
- ❌ Comes with wagering requirements (sometimes 30x–50x)
- ❌ Bonus funds may be locked until conditions are met
- ❌ Some games are excluded from bonus play
- ❌ Max bet limits may apply while using bonus
- ❌ Withdrawal is often restricted until bonus is cleared
Top 3 Deposit Bonus Offers
| 🎰 Casino Brand | 🕹️ Game | 🎁 Bonus | 🏷️ Bonus Code | 📋 Wagering / Terms | Play |
|---|---|---|---|---|---|
 BC Game | Multiple Games | Up to 470% + 400 FS | – | Deposit required Crypto-friendly | Play Now |
 Jackpot Raider | Multiple Games | 225% up to £450 + 250 FS | BEST ENGAGEMENT | 3 deposit bonuses + spins included | Play Now |
 NationalBet | Gates of Olympus | 250 FS + 50 FS | Exclusive | No wagering free spins + 3 deposit bonus | Play Now |
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At KasinoBonus, trust is the foundation of everything we do. Here’s why thousands of readers rely on us:
- 50,000 readers every month
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- Every casino we list is personally tested by our team (screenshots of accounts, deposits, and wins).
- Our reviews are written and reviewed by iGaming professional Matti Slotte with 18 years of experience in poker, casino operations, and European gambling regulation.
- We talk openly about our affiliate partnerships and never accept payment for positive reviews.
- We update our rankings and bonus details every month to show the most accurate and up-to-date information available.
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