Enjoy A Casino Bonus or Promotion in 2021

There’s nothing quite like playing at a new online casino and getting to enjoy a fantastic bonus to make your game playing all the better. At NewCasinosOnline.UK, our team of experts have put together the best online casinos in 2021, offering the most lucrative bonuses that we could find.

We’re not just talking about the biggest and best bonus, we’re talking about ones that players can use, clear quickly through playthrough requirements, and then keep on playing, claiming more as they spend time and money at their new favourite online casino.

50 free spins in the game Starburst

Up To $500 Match Bonus and 100 Lucky Spinds

Spin The Mega Reel To Win Up To 500 Free Spins On Starburst!


50% Bonus up to £100

100% up to 400€ + 25 free spins

The Different Online Casino Bonus Types

The key to having a successful online casino bonus advantage is choosing the right kind of bonus or promotion that will give you the biggest bankroll, or most advantage possible. Usually these will come in the form of welcome bonuses because new players are often offered more than existing players. Here are the different kinds of online casino bonuses and what you can expect:

Welcome Bonus or Sign Up Bonus

A welcome bonus is an online casino’s bread and butter. This is the initial bonus that customers will get when they first sign up at an online casino and make an initial deposit. Usually these range from anywhere between 100% and 400% of your first initial deposit. The wagering requirements are at times a little high, but they usually will at least double your initial deposit.

Free Spin Bonus

Free spins usually come together with other bonuses at the same time and they’ll often work in conjunction with a new slot that the online casino offers from a software provider. These will be a number of spins that can be used on slots with the money won, yours to keep in your casino account! And later, withdrawn!

No Deposit Bonus

While quite rare still, a no deposit bonus is something that players can sign up for and claim. The nice thing about a no deposit bonus is that players will get a bonus added to their account without needing to make any deposit at all. These usually have a maximum withdrawal amount, so you won’t be able to play forever on them, but they can be a great way to start playing for free.

Referral Bonus

Whether it’s friend or family, online casinos want to get customers. They’ll usually offer you a sum of money if you get someone else to sign up and start playing. If that person makes a deposit, then usually both of you will be rewarded with a real money casino bonus.

Monthly Deposit Bonus

These kinds of deposit bonuses are usually reserved for the players who are already part of an online casino. They are also referred to as reload bonuses, but can range from free spins, to free money, and matched deposit bonuses all in one. They’ll usually be smaller promotions but can be constant. These are the key to finding a great online casino.

Payment Method Bonus

Certain casinos that are looking for customers to make deposits using certain methods will incentivise them by offering extra added bonuses on top of the already-existing deposit bonuses. These are usually from casinos encouraging players to deposit using methods such as Bitcoin.

High Roller Bonus

While not for everyone, high roller bonuses are offered to players wanting to play for high stakes. These high roller or VIP bonuses will often have far greater amounts because the deposits are much bigger. In addition, they may also come with other perks and incentives too!

Doing the Numbers with an Online Casino Bonus

Online casinos will offer players bonuses with percentages. Some of the better sites will offer anywhere between 25% and 500% depending on what their goals are and what they aim to achieve. This is why it’s best to shop around for bonuses!

If a site offers you a 100% matched deposit bonus on any deposit, putting as little as £10 in can give you 100% of your money back in a bonus. This means your bankroll will be extended to £20 for the first time you play at that casino. While it does increase your bankroll and make it easier for you to play higher stakes, it’s important to remember that this money isn’t free money, and has terms and conditions attached.

You’ll usually have minimum deposits to quality, you may only be allowed to play certain games, or you may have to be a member of the site for a period of time. Either way, it’s always important to read the fine print, or even simpler, just pick one of the online casinos that we mention in our list.

Coming to Terms with Wagering Requirements

Every bonus at an online casino will have a wager requirement attached to it. These are not to try and catch anyone out, but they usually come with fine print that any player should be reading. With the sites that we recommend, we’ve read the fine print and make it clear as day so that players can claim their bonus while still being able to meet reasonable wagering requirements.

Some online casinos will have unrealistic wagering requirements causing people to be stuck in a loop of wagering requirements, never being able to withdraw any real money winnings they’ve rightfully worked at. That’s not the case here, and with every online casino that we recommend, we’ll have worked out the wagering requirement and list the site as a viable option for someone to play at.

Usually, a wagering requirement will be a multiple of the amount of money that you’ve deposited and the amount that you’ve been given as a free bonus. So if you were to deposit £10, and get £10 as a welcome bonus, with a wagering requirement of 30x, you’d need to play through £600 in order to qualify for real money withdrawals. While this may sound like a lot, it’s really not because your winnings quickly add up and you’ll meet that number in no time.

The Benefits of Claiming an Online Casino Bonus

Players who are lucky enough to claim a really high-quality online casino bonus or promotion at one of our top-rated casinos will be able to increase their bankroll. One of the biggest advantages to playing at an online casino is having a bankroll with a lot of depth. This ensures that players will be able to play for far longer, stretching their money out across their favourite games.

Not only does it let you play for longer, but it also lets you increase your stakes where you normally wouldn’t, even if you know it’s the right play for the strategy that you’re following. Being able to do this whenever the mood strikes, or the play dictates is a powerful weapon to have in your arsenal.


Grabbing an online casino bonus is the easy part, it’s getting one that is fair that becomes tough. Every one of the online casino bonuses that we have listed on our site comes from a fair and reputable online casino. We also know that the bonus can be trusted and as is fair as possible, because it’s likely that our expert team at NewCasinosOnline.UK have already claimed it, played with it, and won some real money off it too.

Frequently Asked Questions

What is an online casino bonus?

An online casino bonus is a way for new players to get started in the world of online gambling. When players sign up and deposit money, online casinos will usually give players free cash or free spins in order to make their casino-going experience that much better.

How do I claim an online casino bonus?

Most online casinos will allow you to just sign up and start playing as soon as you’ve made a qualifying deposit. Sometimes players will be asked to insert a casino bonus code that will represent what they are getting on their bonus, and other times, players will be redirected to the cashier to claim their bonuses.

Are all online casino bonuses created equally?

The important part about an online casino bonus is that each and every one of them is monumentally different. Two of them might offer you 100% matched deposit, but one of them may require a much higher initial deposit, and the other might be a far higher wagering requirement that may just seem impossible to meet!

What is a wagering requirement?

A wagering requirement is the casino’s way of protecting themselves so that players don’t log in, take the money, and run. Players who claim an online casino deposit bonus will need to play through their deposit a certain number of times to ensure that things are fair for both parties. Sometimes online casinos will take advantage of that so it’s important to play at an online casino that you can trust.