Gambling Deals
Search is free & supported by our visitors. Ad Disclosure

AUTHOR: Matt GD · Updated: 15th Jun 2022

The Best Blackjack Bonus Sites

Blackjack is an enduring component of the casino experience. It’s a game built on strategy, luck and courage, and has endeared itself to casino players of all standards throughout its long and fascinating history.

Looking to take your seat at one of thousands of online blackjack games taking place around the clock at the best UK blackjack casinos? Read our expert reviews, compare welcome bonuses, and twist your way to 21 at a top blackjack site.

Why Play Blackjack Online?

Blackjack has been the most popular card game at physical and online casinos for centuries. Its appeal is wide-ranging, with a simple central aim: to achieve a hand as close to 21 as possible without exceeding 21. It also has the highest return to player (RTP) rate of all casino games. Beyond these factors, here are some other reasons why you should consider playing at a top UK blackjack site.

Excellent Sign-Up Offers

If you’re looking to play at a blackjack casino for the first time, you’ll usually be able to claim a welcome bonus when you sign up. These are likely to arrive in the form of matched deposit bonuses and no deposit bonuses, perhaps alongside free spins bonuses which can be used on the site’s selection of slot games.

Range of Games

You’ll find a broad range of games available at the best blackjack sites, covering both random number generated (RNG) and live dealer formats. For the latter, you’ll be able to participate at real blackjack tables from the comfort of your own home, thanks to crisp livestreams. UK blackjack casinos will host all kinds of interesting variants, as well as having tables that suit players of all budgets.

Play for Free or for Real Money

When you play blackjack online, you’ll have a choice of two options: free-to-play and real money versions. Making use of free-to-play demo versions of casino games is a good idea, as it will let you get to grips with the gameplay before you commit real money to wagers. Once you’re all clued up on the rules, the format, and the betting process, you’ll be ready to start placing real money blackjack wagers.

Blackjack Overview – How to play?

The first thing you’ll need to do when you join a blackjack table is put forward a stake for the upcoming hand. For RNG blackjack, this might be as low as 10p, but you should expect slightly higher minimum bets at a live casino, typically somewhere between 50p and £1. Once you and other players at the table have placed their bets, the round will begin, as follows:

  • Each player will be dealt two upcards. Depending on the variant being played, the dealer will also deal two upcards to themselves, or one upcard and one card face down. We’ll cover this in more detail later on
  • Cards 2–9 hold their face value, while jacks, queens and kings are all worth 10. Aces are worth either 1 or 11
  • Players then take it in turns to play out their hands. In most blackjack games, players have the choice of four betting options:
    • Hit: the player asks for another card
    • Stick: the player is happy with their hand and receives no more cards. This is also known as stand
    • Double down: the player doubles their initial bet in exchange for exactly one more card
    • Split: if the player’s first two cards are of the same value, they can split their hands. In this scenario, the player must match their initial bet on the split hand. Both hands then play out in order
  • In some blackjack variants, players have a fifth betting option, called surrender: the player forfeits half of their stake and ends their hand immediately
  • Once all players at the table have completed their hands, it’s over to the dealer to play
  • The closest hand to 21 will win the round. There are no limits to how many times a player can hit in a round, but as soon as their hand exceeds 21, they are bust and lose their stake
  • If the player outscores the dealer, they’ll win at odds of even money. If the player lands a blackjack — that is, when the first two cards dealt consist of an ace and a picture card — they’ll automatically win the hand at an increased payout, usually 3:2


Due to the sheer popularity of blackjack, there are now multiple variations of the rules. Each variation has its own advantages and disadvantages, so you will need to determine which rules you prefer.

Doubling Down

In the vast majority of versions, the Blackjack Casino Deal Croupier gives the player the chance to double down. This is where the player can decide to double their original bet, based on the opening two cards that at dealt. However, this is on the proviso that only one more card is dealt.

In some versions, such as American Blackjack, the play can double down on any hand combination. However, in the European variation, the Blackjack Casino Deal Croupier will only permit a double down when the player’s opening hand amounts to 9, 10 or 11.


When the player gets an opening hand with cards of identical value, the player has the option to split. This splits the two individual cards so that the Blackjack Casino Deal Croupier can deal two further cards, subsequently creating two separate hands. In order to do this, the player needs to match their original stake.

Certain Blackjack variations allow you to split on un-like 10-value cards. For example, in the American segment, you have the option of splitting a Jack and a King. However, in other versions, you can only split when the cards are identical (such as two Queens).


In a nutshell, the surrender option allows the player to exit the hand, based on their opening cards. Moreover, the surrender option is also useful when the Blackjack Casino Deal Croupier has a strong opening card, such as an Ace. In doing so, the player exits the hand with 50% of their stake returned. The surrender option is available in American Blackjack, but not in the European version.


There is also a variation in the amount of card decks used in blackjack UK. In effect, the lower the decks, the greater the chance that the player can calculate what cards are left. These days, it is most common for blackjack dealers to utilise either 6 or 8 decks. Whilst Single Deck Blackjack UK does exist online, it generally offers a lower payout for hitting blackjack.

How we Review Blackjack Sites

Before we point our users in the direction of any casino, we undertake a thorough reviewing process to determine whether it’s worth your notice. This process focuses on a number of key areas – here are some of the most important.


No online gambling site will ever make it onto GamblingDeals without proof that it holds a valid licence from a respected governing body, such as the UK Gambling Commission or the Malta Gaming Authority. Licenses from these regulators ensure casino best practices, protecting customers from manipulated games and potential data hackers. These licenses aren’t a guarantee that nothing will ever go wrong at your online casino, but you should certainly never place a bet at an unlicensed site.


Blackjack fans expect to receive a consistent, generous, and accessible string of blackjack bonuses at UK sites. We’re under no illusions about this, and spend time looking not only at the frequency of bonuses, but also at their associated terms and conditions to uncover their true value.

Selection of Games

Naturally, we want to see as many blackjack variants as possible here, but we also know that online casino players value a wider variety across the site. This means that away from the blackjack arena, we also expect to see a decent range of other table games, as well as an impressive slots catalogue for when the mood changes.

Mobile and App Options

Mobile blackjack isn’t for everyone, but casinos must ensure their mobile capabilities are up to scratch. We’ll take a look at how well the casino is optimised for mobile performance, and if a dedicated app is on offer, we’ll carry out its own detailed review. Top marks for the blackjack casinos that perform well in both areas here. 

Software Providers

Having a mix of the world’s best software developers represented in a site’s games library is an indication that it’s offering a good service to its members. A range of software providers means players will have access to lots of blackjack variants, including those available in both an RNG and live dealer context.

Payment Methods

The best online blackjack sites will provide their customers with many different ways to pay, including debit cards, e-wallets, prepaid cards, bank transfers, and pay by mobile services. We like to see as many of these options as possible – not only because they offer members greater convenience, but also because newer banking technologies are better able to facilitate faster withdrawals.

User Experience

User experience may not be consciously high up on your list of priorities, but when you’re at the table, the last thing you want are bugs, glitches, or slow loading times. The casino should also organise all of its features in an intuitive and creative way if it wants to perform well in this part of our review.

Customer Service

There are lots of reasons why you might need to get in touch with your blackjack casino. We favour sites that offer multiple customer service channels, including live chat, phone, email support, a helpful FAQs page, and the use of social media accounts.

Types of Blackjack Games

The general consensus is that games resembling blackjack have been played for almost 500 years. With this pedigree, it’s no wonder there are now many different variants, all with their own quirks and modifications to the rules. Here are some of the most well-known versions of the game.

American Blackjack

American blackjack is considered one of the more player-friendly versions of the game due to its relaxed rules around betting options. Players are allowed to double down on any hand, for example, and the surrender option – where players forfeit 50% of their stake after receiving their first two cards – is also in play here. American blackjack also allows players to split their hands up to three times, and permits the splitting of any ten-value cards. These liberal betting rules are balanced by the fact American blackjack games contain either six or eight decks. Each deck added to a blackjack game increases the casino’s house edge.

European Blackjack

European and American versions are considered opposites at blackjack sites. In the European variant, there are only two decks in play – giving it one of the highest RTP rates of all casino games – but players’ betting options are much more limited. For instance, there is no opportunity to surrender your hand in European blackjack, and players are only permitted to double down when their hand equals a total of nine, ten or eleven. Players can also only split their hands once, and any split on a ten-valued card must be of the same denomination.

Vegas Strip Blackjack

To play Vegas Strip blackjack, you’ll need to know about hard and soft 17s – a rule that refers to aces in blackjack. Since aces can be worth both one and eleven, a hand containing a one-valued ace is known as a hard hand, and a hand containing an eleven-valued ace is known as a soft one. Vegas Strip blackjack requires the dealer to always stand on a soft 17.

Beyond this, Vegas Strip blackjack games are played with four decks and include an entertaining side bet option. This involves players insuring their wager when the dealer’s upcard is an ace, which makes it possible for the dealer to obtain a natural blackjack and win the hand outright. If players successfully insure their wager in the side bet, they’ll be paid out at a rate of two to one. There’s no surrender option here, but players can split any ten-valued cards up to three times.

Blackjack Switch

When Geoff Hall was left cursing his luck at a blackjack casino back in 2000, he channelled his frustration into the creation of a new variant. With Blackjack Switch, players are dealt two hands instead of one, and their first betting call is to decide whether they’d like to switch the top two cards. These two hands must have the same wager behind them, but will then play out independently and according to the rules of the casino.

Blackjack Switch contains two other unique rules. The first is that gamblers can take part in a side bet called the super match, in which players receive a payout for having a pair, three of a kind, two pairs, or four of a kind. The second is the push on 22 rule, where dealers tie with any remaining players in the round – except those who have a natural blackjack – if their hand totals 22.

Blackjack Perfect Pairs

Initially introduced to the blackjack world as an interesting side bet, Blackjack perfect pairs proved so popular that it quickly spawned a variant in its own right. Players of this game look to participate in a side bet before their cards have been dealt, rewarding those whose hands contain pairs. The payout rates, which differ according to the quality of the pair, are as follows:

  • Mixed pairs – same value, different suit and colour
  • Coloured pairs – same value and colour, different suit
  • Perfect pairs – everything is identical

Once all side bets have been resolved, the game will play out according to the rules of the casino, so make sure you know all the peculiarities of the betting options and how many decks are in play.

Blackjack Bonus Options

Online blackjack bonuses can come in many different forms. Before you take a look at some of the offers you might be able to use at the table, remember that terms and conditions will apply. To take full advantage of the bonus, you’ll need to read these in full first. 

Matched Deposit Bonuses

With this bonus, the casino will equal your deposit up to a certain threshold. Matched deposits are regularly used as part of a welcome bonus, so you might see an offer of 100% up to £100 on your first deposit — this would double any deposit up to £100 with bonus funds. The main drawback on most matched deposit bonuses is the high wagering requirements, but these do vary from site to site.

No Deposit Bonuses

If you fancy using a blackjack bonus without staking any of your own money, you’ll want to search for no deposit offers. This is exactly as it sounds: bonus credit given entirely at the expense of the casino. No deposit bonuses are great for trying out new casinos, but values will be smaller than matched deposits and may also come with harsh wagering requirements.

Bet x, Get y

The bet x, get y formula is simple: place a minimum bet on an eligible game in exchange for bonus funds. These offers are usually in the region of bet £10, get £30, but you may find offers higher than this at the best blackjack casinos.

Best Blackjack Bonus Sites

NameBonusClaim BonusReviewTerms and conditionsInformation

80 Free Spins No Wagering Requirements

Claim Bonus

PlayOJO has a fantastic range of blackjack games, including several exclusive titles you won’t find anywhere else. There are no wagering requirements to contend with at this casino, even on the welcome offer, which comes in the form of 100 free spins. What’s more, PlayOJO also offers money back on all blackjack bets.

This offer is only available for first time depositors. Min deposit is £10. For every £1 you deposit, 1 Free Spin will be credited. Up to 50 Free Spins on Book of Dead. Spin Value: £0.10. After your first deposit you may claim your 30 Extra Free Spins by visiting the Kicker Section. No min withdrawal. This offer cannot be used in conjunction with any other offer. This offer is only available for specific players that have been selected by PlayOJO. If you have arrived on this page not via the designated offer via PlayOJO you will not be eligible for the offer. OJO’s Rewards and Game Play policy applies.

100% Matched Deposit up to £100 + 100 Free Spins

Claim Bonus

There’s boundless fun to be had at Duelz, at its impressive range of blackjack tables and elsewhere on site. Duelz’s approach to bonuses pits members against one another in a series of duels, casting spells and collecting treasure chests in a bid to win casino-based rewards. Kick things off with a 100% matched deposit up to £100 and 100 free spins.

Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Max redeemable from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row, log in each day is required. Max Free Spins winnings: £100. Winnings from Free Spins are credited as bonus money with a wagering requirement of 45 times. Free Spins expire after 3 days. Some games may not be played with a bonus

100% Up To £100 + 300 Free Spins

Claim Bonus

With over 70 games to choose from, Casino Lab couldn’t do much more to attract blackjack fans. There’s a huge welcome offer up for grabs, consisting of a 100% matched deposit up to £100, plus 300 bonus spins. Those crazy scientists are also constantly concocting new and exciting bonuses to keep players on their toes. 

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. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded.

How to Claim a Blackjack Bonus

Looking for the best online blackjack bonuses? We’ve made the process as simple as possible — just use this step-by-step guide to find the right deal for you.

  1. Compare our recommended list of blackjack sites
    We’ve already handpicked the very best blackjack bonuses on the market so that you don’t have to scour the web to find one. Simply use our recommended list to compare casinos, welcome offers and games libraries, before using our links to click through to a site you like.
  2. Sign-up and verify your account
    At the casino’s registration page, you’ll be asked to fill in your personal details. It’s a straightforward process — just follow the prompts on screen. In line with UKGC requirements, the casino will then need to verify your identity, which will involve submitting some documents, such as a passport or driver’s licence, and a recent proof of address.  
  3. Claim your welcome bonus
    When this process is complete, you’ll be ready to make your first deposit. Remember to opt-in to the blackjack welcome bonus; if you don’t specify that you want access to the bonus on your first deposit, you won’t be able to claim it at a later date. 
  4. Browse through the casino’s blackjack games and join the table
    You’re all set! Take a look at the various blackjack games available — in both a virtual and live dealer context — and find the one that suits your budget and pace of play. Then when you’re ready, you’ll be able to place your first blackjack wager.

How do Game Weightings Affect a Blackjack Bonus?

Blackjack online casinos might include game weightings as part of the terms and conditions of their bonuses. These refer to the contributions wagers make towards a bonus’s wagering requirements. Quite often, wagers on table games such as blackjack are weighted at different rates to wagers on slots, which tend to be weighted at 100%. By contrast, some sites may only weight wagers on blackjack games at 10% or 5%. Or, blackjack bets may not count towards wagering requirements at all.

Wagering requirements are already the most substantial obstacle to casino players looking to convert bonus funds into withdrawable winnings. So, if the game in question is weighted at anything less than 100%, fulfilling those requirements by playing this game becomes considerably more challenging.

Blackjack Bonus Terms and Conditions

Before you claim your blackjack bonus, you’ll need to know about the following terms and conditions.

Time Limits

All bonuses are set in a race against the clock, where players must either use the bonus funds or satisfy the wagering requirements within the allotted time. This might be days, weeks or months, but if the clock strikes zero, you’ll lose any remaining bonus money.

Game Restrictions

You might find that some of the casino’s games are ineligible to play with bonus funds, in a condition known as game restrictions. Make sure there are at least a couple of your favourite titles included before committing to the bonus.

Winning Caps

Players may find that they can only win a restricted amount with a casino bonus due to the site’s winning caps. The leniency of the cap depends on the generosity of each casino, so this is another key factor to look out for when checking the small print.

Payment Method Restrictions

Although you’ll be offered plenty of ways to fund your casino account, not all of these methods will be eligible to pick up blackjack bonuses. Your safest bet here is to go with debit cards, which are always eligible for bonuses. The e-wallets Skrill and Neteller tend to be the most regularly excluded, but check the T&Cs for a full breakdown of the restrictions. 

Blackjack Payment Methods

Here are the most popular payment methods at UK blackjack casinos.

Debit Cards

Typical deposit speed: Instant
Typical withdrawal speed: Slow, between 2-5 working days

We all know how debit cards work, and this familiarity is one of the main perks of using them at online casinos. As such, every UK site will accept debit cards, and deposits made with this method will always be eligible for bonuses. On the downside, you’ll need to wait a little while to receive any withdrawals. 


Typical deposit speed: Instant
Typical withdrawal speed: Fast, within 24 hours

There are lots of options in this category at UK casinos, but PayPal, Skrill and Neteller represent the most widely used. They all bring similar benefits, including rapid deposits and the ability to process withdrawals in an instant. e-Wallet transactions are also authorised without the need to exchange bank details, which limits opportunities for hackers to seize this information — you’ll just need to create an e-wallet account to make casino deposits. Finally, be aware that these payment options are often excluded from unlocking deposit bonuses. 

Prepaid Cards

Typical deposit speed: Instant
Typical withdrawal speed: N/A

Services like Paysafecard use prepaid vouchers as currency at online casinos. Again, there’s no need to exchange bank information, but deposit limits are strict here, and there are very few opportunities to make a withdrawal. Nevertheless, prepaid cards are handy for those who want to stick to tight budgets, since only preloaded funds can be spent. 


Typical deposit speed: Instant
Typical withdrawal speed: Medium, within 48 hours

Direct bank transfer systems like Trustly run on the same networks as banks and connect with casinos via open banking technology. This means there’s no need to create a Trustly account and withdrawals are usually fast, though they can take 48 hours in some cases. Watch out for fees with this service — your casino won’t charge you, but your bank might.


Our blackjack guide has illustrated that although the basics remain constant, there are a range of variations to the rules. Whether it’s the double down, surrender or split option, you need to make sure that you understand the implication of a change in rules. Moreover, you also need to check how many decks of cards are being used, as this will affect the house-edge.

Ultimately, the sheer choice of blackjack variations means that you can play the one that best suits your needs. Virtually every single version is now available to play online in the comfort of your own home, either in the form of software or live dealers!

Frequently Asked Questions

  • Are blackjack bonuses legitimate?

    Yes – any blackjack bonus you find on our site has been issued by a licensed casino.

  • Which casinos offer the best blackjack bonuses?

    This will come down to a matter of personal preference, so flick through our picks for the best blackjack bonuses to find the one that’s right for you.

  • Can existing customers claim a blackjack bonus?

    Yes – as long as they’re offered one.

  • Can you play online blackjack on mobile?

    Yes – all blackjack casinos will allow their customers to play on mobile, either through their mobile-optimised site or a dedicated native app.

Select your rating