Casino Bonuses & Promotions

If the best online casino bonuses and promotions are what you’re looking for as we move into 2021, then you’ve come to the right place. Bonus Boss has a range of unbeatable casino bonuses; including free spins bonuses , no deposit bonuses and bonus credit that you can use to play on our innovative casino games – all year round!

BOO-gie your way to a share of up to 15,000 FREE SPINS!

18+. Deposit & stake £10 and play 50 spins in Sugar Skull Spins for entry. Players can make multiple entries. Max 1 win per player. 166 Free Spin (FS) prizes, max prize 700 (Max 100FS daily). FS locked to in 7 Deadly Spins. 40x Wagering. 24hr Expiry. Ends 01/11/21. T&Cs apply.



18+. New Players only. Up to £300 Deposit Bonus available via 2 deposit boosts. Min deposit and stake £10. Up to 50 (15p) locked free spins (FS) to use on Supernova Crush. Up to 50 (20p) locked FS to use on Coins of Fortune. 40x wagering requirement on bonuses and FS wins. Win paid as bonus credit. T&Cs apply.

Welcome Offer - Bonus Boss Casino


18+. New Players only. Up to 100 (18p) locked free 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.

Refer a Friend
Refer a Friend Offer - Bonus Boss Casino

Unlock an up to £5 FREE BONUS when you refer your friends to Bonus Boss!

18+. Up to £5 bonus received when the referred friend has played through their first deposit of £10. 40x wagering requirement. 7 day expiry. £50 Max withdrawal from bonus win. T&Cs apply.


Bonus Boss likes to keep things FRESH, with monthly new releases!

18+. Up to 45 (15p) free spins. Win awarded as bonus credit. 40x wagering requirement. 24hr expiry. £50 Max withdrawal from bonus win. Ends: 11/08/21. T&Cs apply.


Play on Bonus Boss for your chance to win some BOSS BONUSES!

18+. 40x wagering requirement. Max withdrawal from bonus winnings without depositing is £50. Specific T&Cs apply to each bonus.

Bonus Boss online casino is licensed and regulated by the UK Gambling Commission, and provides you with the best online slots games available in 2021. Therefore, it’s only right that you have the chance to grab an amazing casino bonus to play them with – no casino bonus code needed!

That’s right, Bonus Boss really is the boss of casino bonuses and promotions. From the moment you sign up and create your very first account with us, the bonuses could keep on spinning in. There’s an unrivalled Casino Welcome Bonus that includes no deposit free spins and an amazing Refer-a-Friend bonus . So what are you waiting for – sign up and join the Bonus Boss family today.

Did Someone Say No Deposit Free Spins?

To start your Bonus Boss adventure right as we move into 2021, we have an incredible three-part Casino Welcome Bonus that begins with no deposit free spins ! That’s right, after you’ve signed up and had your very first account verified by our team, you could find yourself with up to 100 free spins*, without even making a deposit.

These free spins are locked to the reels of The Spinfather online slots , and in this slots family, big wins could soon come spinning in.

A Double Deposit Match Offer And Even More Free Spins!

Bonus Boss’s UK Casino Welcome Bonus is like no other. Not only do you get up to 100 no deposit free spins *, but after making your first and second deposits , you’ll unlock a world of new casino offers!

Alongside your deposit match bonus , you’ll also pick up even more free spins . With your very first deposit, you could get up to 50 free spins** to use on the space-themed slots of Supernova Crush . Then another up to 50 free spins**, this time locked to the rich reels of Coins of Fortune , after making your second deposit.

When it comes to making a deposit , we understand that in 2021 everyone is different. That’s why we have a range of depositing options for you to choose from, including our safe and secure method of paying by your phone bill .

Even More Casino Bonuses Are Waiting…

It’s not just new players that can get their hands on one of Bonus Boss’s epic casino bonuses, there’s something for everyone at this online UK casino .

Bonus Boss knows that spinning and winning across our online slots is always more fun with friends. That’s why you could get up to £5 in bonus credit***, with our Refer-a-Friend offer .

There is no limit to the number of friends that you can refer, so the bonuses could keep on spinning in from now and during 2021.

Bonus Boss also has incredible bonuses and promotions that run throughout the year. These include a Game of the Month bonus and seasonal competitions that often contain both casino bonuses and physical prizes.

*18+. New players only. Available via Feature Game. Free spins (18p) locked to The Spinfather. Expires 7 days after registration. Winnings paid as bonus credit (40x WR). Max withdrawal from bonus winnings is £50. T&Cs apply ,

**18+. New players only. Min Deposit £10. Deposit Bonuses expire after 30 days. First Deposit: Up to 200% (Max Bonus £100), Up to 50 Free Spins (15p) locked to Supernova Crush. Second Deposit: Up to 100% (Max Bonus £200), Up to 50 Free Spins (20p) locked to Coins of Fortune. Winnings paid as bonus credit (40x WR). Withdrawing qualifying deposit excludes player from promotion. T&Cs apply ,

***18+. Referred friends must deposit and wager through £10 for award of up to £5 bonus. Expires after 7 days. Bonuses subject to 40x wagering requirement. Max withdrawal from bonus winnings £50. The referred player withdrawing Unspent Deposit will exclude the referrer from this promotion. T&Cs apply ,