100% Casino Bonus

If you want to find a casino with a 100% Casino bonus in today’s industry, you don’t have to look far. Pretty much every Online Slot site provides this Welcome offer, so you can easily claim it and start playing right away. But this doesn’t mean that all of them are good enough to be claimed. You have to read the terms they come with and check the wagering requirements, whether you get some extra free spins with the offer or does it have a maximum cash out limit.

 

Also, some Online Casinos can claim that they have a 100% slots bonus, but when you make a deposit you find out that it’s actually a 50% on your first 2 deposits at the casino. This is why on this page I only entail casinos which offer a real and good 100% welcome bonus from the FIRST DEPOSIT. The promos in this site are guaranteed to have favourable terms, so you can claim them and start playing immediately.

Online Casinos With 100% Bonus

Ad Disclosure
All offers and promotions advertised on Best Mega Reel Sites are subject to the individual sites' terms and conditions. Over 18's only, wagering requirements may (usually do) apply. We are affiliated with many of the brands we feature (advertise) and may be compensated for the referral of customers to those brands. The bestmegareelsites.co.uk website uses cookies, as set out in our cookies policy. Accuracy of information is intended but not guaranteed. All content is supplied for entertainment purposes on a non-reliance basis as per our terms of use.
Sign Up Bonus
100% up to £100
No Deposit
N/A
Year Launched
2013
Feel British at this colourful casino with an amazing range of live games, a great and quick customer service and a first deposit bonus of 100% up to £100 + 10% cashback. No maximum limit on bonus winnings makes this a great welcome bonus. Read more...
Read T&C's
New customers only. Min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Click Here For Full T&C’s.
Bonus code welcome100
Sign Up Bonus
100% bonus up to £222 + 50 Spins
No Deposit
N/A
Year Launched
1999
As you have found yourself on this CasinoLuck review page, you must be looking for an online casino that is safe and secure, along with providing some excellent bonuses and promotions for good measure.   Our CasinoLuck review will tell you everything that you need to know about this highly reputable casino so that you […] Read more...
Read T&C's
Terms and conditions apply. New players only 18+. Min Deposit £20, Wagering requirements apply 35x, Offer valid for 72 hours
Bonus code N/A
Sign Up Bonus
100% bonus up to £222 + 22 Bonus Spins
No Deposit
N/A
Year Launched
2005
Every online casino lays claim to be the best in the business but Slots Planet Casino actually walks the walk instead of just talking the talk, as you are about to discover. Read more...
Read T&C's
18+. New players only. Min deposit £10. 22 Bonus Spins valid on Starburst. Bonus funds are 100% up to £222. Bonus funds + spin winnings are separate to cash funds and subject to 35x wagering requirement. Only bonus funds count towards wagering contribution. £5 bonus max bet. Bonus funds must be used within 30 days, spins within 10 days. Affordability checks apply. Terms Apply. BeGambleAware.org
Bonus code N/A
Sign Up Bonus
100% Bonus up to £100 and 100 Spins on Starburst
No Deposit
N/A
Year Launched
2021
If you are yearning to take a journey on the high seas of online slots, Atlantic Spins is the online casino that can provide that experience. The operating licenses have been given by the United Kingdom Gambling Commission as well as by the Malta Gaming Authority and the gaming platform is founded on the renowned Aspire Global technology. Read more...
Read T&C's
New Players Only 18+. Minimum Deposit: £20. Maximum Offer: 100% Bonus up to £100 & 100 Spins on Starburst. Players will be credited with 20 Spins per day, across 5 days. Bonus & Spins winnings must be wagered 35x before withdrawal. Spins expire after 5 days. Promo Code: PLAY100. Withdrawal & Full T&Cs apply here. . Valid until 31/12/2022. www.begambleaware.org.
Bonus code N/A
Sign Up Bonus
100% Bonus up to £100 & 100 Spins on Starburst
No Deposit
N/A
Year Launched
2018
Established in 2018, Jaak Casino is powered by the well-known Aspire Global platform. It offers live games, table games and video slots with major releases of most of the software developers such as NetEnt, NextGen, Microgaming and more. Jaak Casino is a regulated and licensed entity under authorities like UK Gambling Commission and Malta Gaming Authority. Read more...
Read T&C's
New Players Only 18+. Minimum Deposit: £20. Maximum Offer: 100% Bonus up to £100 and 100 Spins on Starburst. Players will be credited with 20 Spins per day, across 5 days. Bonus and Spins winnings must be wagered 35x before withdrawal. Spins expire after 5 days. Promo Code: JAAK100. Withdrawal and Full T and Cs apply here.Valid until 31/12/2022. www.begambleaware.org.
Bonus code JAAK100
Sign Up Bonus
100% Bonus up to £50 and 100 Spins on Starburst
No Deposit
Ν/Α
Year Launched
2017
Launched in April 2017, Kaiser Slots is the first brand on the Aspire Global Network, also available in Germany, Sweden and Denmark. It provides an excellent and well-rounded online casino experience, offering 1,000+ of the best slots, table games, scratchcards and more. Kaiser Slots acquired its licenses from the UK Gambling Commission and the Malta Gaming Authority. Read more...
Read T&C's
New Players Only 18+. Minimum Deposit: £10. Maximum Offer: 100% Bonus up to £50 and 100 Spins on Starburst. Players will be credited with 20 Spins per day, across 5 days. Bonus and Spins winnings must be wagered 35x before withdrawal. Spins expire after 5 days. Promo Code: 100 SPINS. Withdrawal and Full T&Cs apply here.Valid until 31/12/2022. www.begambleaware.org.
Bonus code N/A

What is a Casino Welcome bonus?

A Casino Welcome bonus is awarded to the player on the first deposit at the casino. This is usually the best promo the casino has in stock, so it’s always a good idea to claim it in order to try the casino games. Some of the most common Welcome promos at Online Casinos are the following.

Types of 100% Slots Bonuses

  • Match Bonus

This is a promo where the casino matches the amount you deposited. So, for example some casinos have a 100% match bonus for slots up to £200. If you make a £100 deposit you will get another £100 from the casino as a gift.

If you deposit £200 you will claim the maximum £200 and so on. At some operators you can even make a bigger deposit, but you will only receive the maximum amount, in this case £200.

  • Cashback Bonus

A £100 Casino Cashback bonus is just what it says it is. When you make a deposit at the casino and lose it, the casino will match the deposit in cashback. So in fact, with this promo you have a chance to play twice at the casino with the same deposit amount.

This promo is attractive, since it offers you insurance on your deposit. The only downside is that the Cashback bonus will certainly come with a wagering requirement. This means that if you made a big deposit, the attached wager to the cashback will now, without a doubt, be very big as well.

  • Bonus for New Slots

A 100% bonus for new slots is more likely to be found in the Reload promos than in the Welcome ones. This type of offer is usually awarded to regular players at the casino. In most cases you can expect to receive it when the casino adds games from a new software provider in their portfolio.

This is a great way to try the new casino games with some extra money, especially since it’s quite hard to find a Reload bonus at your regular casinos.

Can I find a promo deposit 100% bonus in UK Casinos?

Yes, in general it’s still very easy to find a 100% Casino bonus for slots in UK Casinos. But what you should know is that promos like this are decreasing by the day. The recent regulations in the UK mean that the taxes which casinos pay are really high.

So many operators are simply moving to some cashback of free spins promos instead. But you will still be able to find a 100 slots bonus across UK Casinos in the future as well. There is a big number of really strong UK Casinos, who simply don’t care about taxation and want to make their players happy. In the end, if the players are not happy, the casinos will stop generating revenue.

Watch out the hidden terms

By now, you already know that pretty much every 100% Casino bonus for slots, or any other similar to it, usually comes with some terms and conditions attached. The terms of the welcome packages will need to be honoured to the letter, or the casino can legally void your winnings. Let’s take a look at what are some of the most common hidden terms you can come across when claiming a promo deposit 100 bonus at Online Casinos.

  • Minimum deposit amount to claim the bonus

This is usually a pretty straightforward term when it comes to welcome packages. But at some casinos you can see that the minimum deposit amount is set at £10. At the same time in order to claim their 100% slots bonus, you will need to deposit £20 or even more.

  • Allowed payment methods

At many Online Casinos today, the fine print of the 100% casino bonus terms claims that Skrill, Neteller, PayPal and Ecopayz are not allowed as payment methods for claiming the bonus. It’s very frustrating to become aware of this only after you have made a deposit and you don’t see the extra money added to your account.

  • Allowed and forbidden casino games

Every casino welcome package has a maximum allowed bet per spin limit. It’s put in place for the casino to protect itself from players who can win a lot of money, simply by using extra funds. At most casinos you are limited to placing bets up to a maximum of 5 per spin or hand, but this value can differ from one casino to the other.

  • Wagering requirement

The wagering requirement is also pretty much a simple term. Every promotion will come with a certain wagering requirement attached. But the trick some casinos use here concerns the games wagering contribution. In most cases slots contribute 100% towards the wager, but at some operators it can be 75% or even 50%.

  • Account verification

With the latest changes in UK legislation, all players are required to send in their documents and verify their casino account before they start playing at the casino. So if you’re a UK player and come across a new casino make sure to get this done first, before you make a deposit and claim a bonus. You can easily deposit and claim the bonus, but you won’t be allowed to play until the verification is completed.

  • Misleading promos

Misleading promos are very frustrating and they are a prime example why you should always read the terms before you claim any kind of promotion. Some casinos can advertise a 100% bonus up to 1,000 as a welcome package. So, you make a deposit of 1,000 and see that only 500 in extra money were added to your account. When you read the terms you see that it is in fact a set of two 50% match deposit bonuses up to 500.