400% Deposit Welcome Bonus 2022

If you are searching for a massive casino bonus, then welcome to Casino Martini! Our expert team reviews and tests all casino bonuses to ensure you receive the most out of your opening deposits. Casino bonuses that offer up to 400% of a bonus amount have been favoured by punters since the birth of online gambling.

Having the ability to quadruple your deposited amount is exciting for both new and seasoned casino fanatics. These bonuses often come in the form of deposit match bonuses whereby a player can receive a percentage of their deposit back in bonus funds up to their 4th deposit. The percentage is often broken down, which allows players to wager for longer presenting more opportunities of winning big.

Our veteran research team comprised of gambling experts from all walks of life presents its comprehensive findings within the UK gambling industry. Once you are finished reading, you will be a 400% bonus expert ready to claim big and win even bigger!

100% Bonus up to £200 + 100 Bonus Spins
Terms & conditions apply
18+. New players only. Min deposit: £10. 100 spins require 3 deposits: min second and third deposit £20. Spins and bonus wagering requirement: 35x, spins expire after 24 hours. BeGambleAware.org / Gamble Responsibly
  • Live Chat
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Up to £300 Deposit Bonus + 100 Spins
Terms & conditions apply
18+. New Players only. Up to 100 (18p) locked bonus spins to use on The Spinfather. Win paid as bonus credit via lobby game. 40x wagering requirement. 7 day expiry. £50 Max withdrawal from bonus win. T&Cs apply. Play Responsibly. BeGambleAware.org
  • New Casino
  • Quick Registration
  • Spin the wheel for bonus spins
100% UP TO £100
Terms & conditions apply
No Deposit Offer: New players with valid mobile number only • Claim in 48 hrs • 14 day expiry • Valid for selected games • Pre-1st deposit only: FS voucher winnings is uncapped, bonus wins & max redeemable amount for non-funded players capped at €100, excl. JP wins • Wager Bonus x1 - req. contributions vary by game • Bonus expires in 90 days • Deposit Offer: 1st time depositor at 888casino only • €20 min deposit • Claim in 48 hrs • Valid for selected games • Bonus wins capped at €500, excl. JP wins • Pre-1st deposit only: Bonus wins & max redeemable amount capped at €100, excl. JP wins • 30x wagering – req. vary by game • Bonus expires in 90 days • Payment method & country restrictions apply • Withdrawal terms, No Deposit Offer terms & Deposit Bonus Offer terms apply.
  • World-famous casino
  • Choose between Sport, Poker or Casino bonus
100% up to £100 + 300 Bonus Spins
Terms & conditions apply
18+ Full T&CS Apply. New UK Players only. £10 Min Deposit. £5 Max Bet Using Bonus. 40X Wagering Applies. Bonus Valid for 14 days. 30 Spins will be Credited Instantly upon Qualifying Deposit + then 30 per day for 9 days on pre-selected games. Bonus Spins valid for 72 hours from credit. Max bonus spins winnings £100. Ewallets Excluded. Play Responsibly. BeGambleAware.org
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Up To 1000% Match Bonus
Terms & conditions apply
18+. New players only, £10 min fund, £1,000 max bonus, max bonus conversion equal to lifetime deposits (up to £250), 65x wagering requirements and full T&C apply. Play Responsibly. BeGambleAware.org
  • UK gaming License
  • Many payment options
  • Home to a number of top gaming platforms
Up to £100 match bonus+ 200 Spins
Terms & conditions apply
Terms and Conditions apply. Offer valid upon 4 deposits. New players only. 18+. Min deposit £20. Welcome package split over 4 deposits, 35x wagering applies. Play Responsibly. BeGambleAware.org
  • Popular Jackpot Slots
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Get up to £250
Terms & conditions apply
New players only. Play responsibly. Full T&C’s Apply. 18+ T&Cs
  • 1,500 games provided by top developers
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100% Up to £100 + 100 Bonus Spins
Terms & conditions apply
18+ new players only. Min deposit: £20. Max £100 bonus. Max bet with active bonus: £2. Wagering required 100% match bonus: 30x deposit + bonus. Max win from welcome bonus: £500. 100 Bonus Spins are given out 20 per day on Book of Dead for 5 days in a row. Max Bonus Spins winnings: £100. Bonus Spins winnings credited as bonus money with 45x wagering & 3 days expiry. Deposit bonus & Bonus Spins wins are forfeited 30 days after bonus is credited if the wagering is not met. Game weighting and restrictions apply. Play Responsibly www.begambleaware.org.
  • Unlimited withdrawals
  • 0-24 hour withdrawal timeframes
  • Live chat is open 24/7
£100 Bonus + 300 Spins
Terms & conditions apply
18+ Full T&Cs Apply. New players Only. £10 min deposit. £5 max bet using bonus. 40x wagering applies. Bonus valid for 14 days. 30 Spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Bonus Spins valid for 72 hours from credit. Max Bonus Spins winnings £100. Ewallets excluded. Play Responsibly. BeGambleAware.org
  • New Casino!
  • A total of £1500 bonus
  • 18+ Terms and Conditions apply
UP TO £1000
Terms & conditions apply
New customers only. This company is licensed and regulated by Malta Gaming Authority and operates under a License Number of MGA/B2C/370/2017. You are only allowed to participate if you are at least eighteen (18) years old or of legal age as determined by the laws of the country where You live (whichever is higher). T&Cs apply. Play responsibly. 18+ BeGambleAware.
  • Generous welcome bonus
  • Over 2000 slots and table games
  • Best game providers
100% up to £150 + 50 Free Spins on Starburst
Terms & conditions apply
T&Cs apply.New player only. 7 days to claim offer and deposit a min of £10 with a further 7 days to wager 35x. Cash stakes only and wagering contributions vary. Max reward £150. 50 wager-free spins 0.10p each on Starburst awarded after wagering complete, winnings paid as cash. 18+ BeGambleAware.org
  • Slots, Bingo & Live Casino Games!
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Get up to 500 bonus spins
Terms & conditions apply
  • New Casino
  • Free Spins on Starburst
  • 100's of Slots
Up to £100 Bonus + 100 Bonus Spins
Terms & conditions apply
18+. New Players only. One bonus offer per player. Minimum deposit of £10. Max bonus bet £5. This offer gives you a 100% match bonus up to £100 and 100 bonus spins. Bonus spins are valid on the following game(s) only: Starburst. Bonus spins to be credited at a rate of 20 bonus spins per day over five days, triggered on your first deposit. Bonus spins winnings credited in the form of bonus funds and capped at £50. Bonus funds must be used within 30 days and bonus spins within 10 days, otherwise any unused shall be removed. Bonus funds are separate to Cash funds and are subject to 35x wagering on the bonus funds only. Affordability checks apply. Terms apply. Play Responsibly. BeGambleAware.org
  • Brand New Casino
  • Huge Jackpot Pools
  • Live Dealer Games
50 Bonus Spins on First Deposit
Terms & conditions apply
18+. First deposit only. 50 Bonus Spins on Book of Dead slot. Bonus Spin valued at £0.10. OJO’s Rewards and Game Play policy applies. Play responsibly. BeGambleAware.org
  • No wagering welcome offer
  • Great incentive for players
  • Professional and friendly support team
100% Up to £50 + 100 Spins
Terms & conditions apply
18+. New players only. 100% bonus on first deposit up to £50 & 100 Bonus Spins (50 spins on day 1, 25 on day 2, 25 on day 3) for Book of Dead slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expire after 48 hours. Game restrictions apply. Further Terms Apply. Play Responsibly. BeGambleAware.org
  • VIP Loyalty Program
  • Range Of Top Games
  • Multiple Deposit Methods
100% Up to £100 + 100 Spins
Terms & conditions apply
Terms and Conditions apply. Offer valid upon 4 deposits. New players only. 18+. Min deposit £20. Welcome package split over 4 deposits, 35x wagering applies. Play Responsibly. BeGambleAware.org
  • Leading software providers available
  • Mobile-friendly
  • Games proven fair
100% up to £300
Terms & conditions apply
The New Player Welcome Bonus is only available to players who create an account and make their first deposit at Casino Gods. You may only claim one Welcome Offer (Welcome Package or Live Casino Bonus). Once you have claimed one, you will not be eligible for the other. To be eligible to claim the New Player Welcome Bonus, players must deposit a minimum of £10 in one instance. The New Player Welcome Bonus will only be offered on your first deposit, unless otherwise stated. Players who do not wish to receive the New Player Welcome Bonus offer will have the option to opt out upon making their deposit. Play responsibly. Full T&C’s Apply. 18+
  • Bonuses from the Gods!
  • A total of £1500 bonus
  • 18+ Terms and Conditions apply
100% Match up to £300
Terms & conditions apply
Casino only. Bonus is 100% of first deposit, up to a maximum of £300. Minimum deposit of £10. Bonus must be claimed within 3 days. Wagering requirements apply. Bonus amount cannot be withdrawn. T&C's apply
  • Available on both desktop and mobile
  • Contains two live dealer casinos with more than 8 distinct games total
  • Features a wide variety of Microgaming slots and other casino games

What is a 400% Deposit Match Bonus?

400% casino bonuses are offered to players upon arrival at an online casino, the purpose of the match bonus is to entice players to create an account and make a deposit. The casino then rewards the process by not only matching your opening deposit but quadrupling it and presenting you bonus funds to enjoy once you have played through your initial deposit.

These casino deposit bonuses are a high-rollers dream allowing them to make out on their opening deposit and receive thousands in return to wager at the casino site. Let’ take an example to break down this bonus offer. If an online casino offers a welcome bonus of 400% up to £200 and a player deposits the maximum amount, then a player will receive their initial £200 plus an additional 400% of this amounting to £800. The punters will then have a total of £1000 to wager across the online casino.

Read: The Latest UK New Casinos 2022

How to Find the Best 400% Bonus

The search certainly isn’t difficult, players can simply scroll up to the top of this page and feast their eyes upon a number of 400% bonus offers. Finding the perfect 400% first deposit bonus to suit your preference is a different story.

All players have various likes and dislike while wagering at an online casino, checking the terms and conditions and the allocated games to the associated bonus spins can aid in selecting the best bonus. Furthermore, checking out the casino itself is vital to the success of your bonus. Make sure the departments within are to your fancy from the slots to the live casino section and all other relevant fields.

Read: Find All The Best UK Live Dealer Casinos

The minimum deposit shouldn’t be an issue for most players preparing to claim such a substantial welcome bonu. Yet, thee maximum withdrawal amount will be a factor to consider and although this is not apart of the bonus itself it will benefit you in the long run.

How to Claim a 400% Casino Welcome Package?

UK players can rejoice in the fact that 400% casino deposit bonuses are easier than ever to claim. Gone are the days of a singular large deposit amount needed to claim such an enormous casino offer. Bonus minimum deposits are now set at £20 varying slightly from between casino sites. This permits all gambling fans the possibility of claiming some substantial bonus funds that are relevant to their personal bankrolls.

Of course, high rollers can still max out the casino bonus and obtain funds for the day but now more than ever casino deposit bonus offers are accessible to all new players entering the online gambling world.

Follow this step by step guide to claim a 400% deposit bonus today – From start to finish!

  1. Enter the casino by clicking the “Claim Bonus” button beside the bonus of your choice.
  2. At the casino site hit “Register”.
  3. Fill out the signup form with basic information such as name, email address, mobile number, and create a password.
  4. Verify your casino account and select a payment method within the “cashier” section.
  5. The amount you deposit will amount to the sum of bonus funds you receive in return.
  6. Confirm deposit and enjoy your new online casino bonus.

This simplistic process permits players to claim a 400% deposit bonus instantly. The terms and conditions will automatically be accepted upon first deposit, make sure to read through and ensure you agree to all terms.

Read: Find All The Best UK Live Dealer Casinos

Bonuses for Existing Players

Although 400% welcome bonus offers are only created for new customers, an existing member at various online casinos has the opportunity to receive casino deals. 400% casino bonuses can also be found within VIP clubs for loyal casino members. These deposit bonuses are presented in the form of cashback bonuses and VIP bonus offers often providing bonus spins too.

Pros & Cons of 400% Casino Deposit Bonuses

Before claiming a 400% casino bonus its always a good idea to weigh up the pros and cons, we have listed each here for you to aid in your decision process.


The benefits of a 400% bonus will span for weekly through your casino gameplay. These bonuses not only provide players with huge amounts of bonus funds but also permit players to test out new slots and learn new games without the risk of losing your own hard-earned cash. Here are the advantages of obtaining a 400% casino bonus.

Read: Find All The Best UK Live Dealer Casinos

  • Risk-free wagering
  • Easy to claim
  • Allows players to wager for longer
  • Multiples your deposit by 4
  • Perfect for a Highroller and also accessible for low rollers.
  • Often come with bonus spins

Its clear the benefits of these bonuses are expansive. New players and exciting players can utilize these bonuses at online casinos and test out various games with reasonable wagering requirements for most match bonus offers.


The advantages heavily outweigh the disadvantages, nonetheless, there are a few points worth noting. These two aspects within the terms and conditions of these casino bonuses have hindered new players in the past.

  • Higher wagering requirements
  • Short expiration dates

All casino bonuses implement these conditions yet $400% casino bonus offers can be sustainably higher, carefully read through before completing your first deposit,

Terms & Conditions – What to Expect

The terms and conditions of a 400% casino bonus offer often determine how players will use the bonus funds within the casino. Educating yourself on the vital terms will benefit you not just for your next bonus offer but for every bonus then after. We take the pleasure in breaking down the important terms to give you the expert knowledge while claiming your next massive welcome package.

These terms are in most online casinos, welcome bonuses will vary between casinos and bonus money will also. Ensure you understand the following terms before diving into your next 400% casino bonus!

Wagering Requirements

The wagering requirements of a casino bonus are unavoidable, this figure will determine if you will be able to hold on to your bonus funds. Wagering requirements are put in place to give the online casino the chance of claiming back the funds it has given out. This wagering requirement figure will be stated beside the casino bonus in our top list amounting to 40x to 60x.

Expiry Date

Deposit bonus offers and bonus spins don’t last forever, in an ideal world we could come and go from a casino and our bonus funds would be untouched. Check the expiry date to ensure you don’t lose out on your received bonus funds or winnings by not adhering to the wagering requirements in time.

Minimum & Maximum Amounts

The minimum deposit amount of 400% casino bonuses often matches the gambling site min amount. This is usually set at £20 with some exceptions being as low as £10. The maximum amount will vary between casinos, high-roller can be glad to hear that this amounts in the thousands at casinos with 400% deposit bonuses.

Bonus Spins (If Applicable)

Free spins are attached to most welcome bonus offers, they can be claimed and enjoyed across selected slot games. These bonus spins are a perfect addition to all 400% bonuses allowing players to test out the latest slots without having to tap into their bonus funds. .

Read: Our Complete List Of UK Bonus Spins Offers For 2022

If this list of a bit slim pickings for you, it’s important to remember that these types of bonuses rarely come up and when they do, the terms and wagering requirements can often be very restrictive. Check out our research on all the 100% deposit match bonus offers for a greater variety of brands.

400% Welcome Bonus at Online Casinos FAQ’s

Do all casinos offer 400% casino bonus offers?

Unfortunately not, the most common form of the deposit match bonus is a 100% bonus offer. This doesn't mean that they are not still present, check out our 400% casinos here at Casino Martini.

Are there free spins attached to 400% welcome bonuses?

Yes, nearly all welcome bonuses present bonus spins in the United Kingdom and 400% bonus offers are no different.

What is the wagering requirement of a 400% bonus?

Every casino differs within their wagering requirement figure, a player can expect to wager their bonus from 30x to 70x depending on the casino.