Welcome Bonus Casinos

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Your search for online casino welcome bonuses is over.


Comparasino lists hundreds of sign-up bonuses available to UK players and provides the tools you need to find the best bonuses and brands for you.

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There are plenty of different welcome bonus offers to choose from, including deposit matches, free spins, no deposit bonuses and no deposit free spins. Some casinos even combine several bonus types under the welcome package offered to new players.


The welcome bonus is designed to entice you to the casino brand over others available to UK players, and that’s why these bonuses often provide the greatest value. Expect deposit matches of 300% and more, as well as hundreds of free spins.


Best of all, you can win real cash when wagering with a welcome offer.

What is an online casino welcome bonus?

It is simply an incentive offered to new players to sign up for an online casino for the first time.

Some require you to make a deposit before you can unlock the bonus, while others are awarded as soon as you sign up.

The bonus itself comes in two forms: bonus cash or free spins. Both can be used to increase your bankroll and try out the casino before you decide to play using your own money.

Different types of online casino welcome bonus

There’s a range of sign up bonuses available to UK players, each offering something different.

The most common welcome bonuses are...

200% Deposit match

The casino will match the amount of money you deposit by 200% up to a certain value, allowing you to triple your bankroll.

Learn more about 200% deposit match bonuses

Free Spins

You receive free spins on specific slots at a casino, with hundreds of Free Games up for grabs at some brands.

Find out more about free spins bonuses

No Deposit Bonus

Receive a cash bonus when you sign up and create an account at an online casino with no need to deposit first.

Read more about no deposit bonuses

No Deposit Free Spins

Receive free spins just by creating an account without needing to deposit any money. Free Games are played on blockbuster slots.

Learn more about no deposit free spins bonuses


The casino will offer you money back on your wagers or losses up to a specific amount.

Read more about online casino cashback bonuses

Why claim an online casino welcome bonus

There are a bunch of good reasons including...

Use the bonus to boost your bankroll or enjoy a number of free spins on popular slot games.

Casinos are incredibly generous with their welcome bonuses, and often combine deposit matches and free spins to incentivise players to use their sites.

Pretty much every online casino available to UK players has a welcome offer, so there are plenty of brands to choose from.

You can win real money when playing with bonus cash or bonus spins – subject to T&Cs of course.

Find the best online casinos for you

Comparasino is here to match you up with UK online casinos that offer the welcome bonuses and experiences you’re looking for.

When you sign up at Comparasino, we’ll ask you to tell us what you want from an online casino. Don’t worry, you can answer just three questions before firing up our powerful search engine or answer a few more questions to really narrow down the best online casinos for you.

Once you’ve told us what you like, our smart recommendation engine generates a list of online casino sites that match your preferences. We then drop these brands into your own individual portal.

Each time we onboard a new online casino that meets your preferences, it’s automatically added to your list for you to play when you’re ready. This means less time searching and more time playing. What’s not to like about that?

Sign up today

How to claim a welcome bonus

Claiming a sign-up offer couldn’t be easier – simply follow these steps.

  1. Browse and compare all welcome bonuses using our tools and filters.
  2. Once you’ve found the brand and bonus you’re looking for, check the bonus T&Cs.
  3. If you’re happy with the T&Cs, click “Play”.
  4. Follow the casino sign-up process and make a deposit (if required) using your preferred payment method.
  5. Once you’ve made your deposit (if required), you’ll receive your offer straight away.
  6. Use your bonus to play slots, table games, scratch cards, crash games, live dealer, bingo and more.

Welcome bonuses and a few things to consider

Nothing in life is really for free and this certainly applies to online casino welcome offers, which always come with terms and conditions attached.

The T&Cs are specific to each online casino bonus, so it’s important to read them and understand what they mean before claiming an offer.

This is because the T&Cs can reduce the value of the bonus when you factor in things like win limits and wagering requirements. That’s not to say the bonus doesn’t add value to your play but being aware of the T&Cs means you know exactly what the bonus ultimately delivers

Welcome bonus T&Cs to be aware of

T&Cs can be quite lengthy, so we've broken out the key terms to be aware of, what they actually mean and the impact they can have on the bonus offer.

Maximum bet - he maximum amount you can bet on a single round when using bonus cash or spins.

Win limits- The maximum amount you can withdraw from the bonus.

Payment restrictions - The bonus might not be available when depositing with certain payment methods, usually digital wallets such as Skrill and Neteller.

Minimum deposit to trigger the bonus - Most welcome bonuses have a minimum deposit to unlock the offer, usually between £10 and £20.

Limited game selection - The games that can and can’t be played using bonus cash and/or free spins.

Time limit to use the bonus - The amount of time you have to use the bonus before it expires - it's normally 30 days.

Wagering requirements - How much you need to playthrough before you can withdraw your bonus or winnings as cash.

Casino bonus wagering requirements explained

The wagering requirement is the number of times you have to wager the bonus amount or your winnings before you can withdraw the bonus amount or your winnings as cash.

Wagering requirements vary significantly. Low wagering casinos will impose playthrough requirements of between 10x and 30x, but they can be as high as 65x at some brands.

The good news is there are a growing number of UK online casino sites that impose no wagering requirements whatsoever – although the bonus value offered is usually much less, it’s your money to play with and withdraw as and when you want.

Calculating the wagering requirement on the welcome bonus can be difficult, especially if both a deposit match and free spins are offered.

For the deposit match, the wagering requirement is usually applied to the bonus amount and with free spins, to your winnings.

This is how you would calculate each:

Deposit match:

  • Calculate the bonus amount claimed
    Multiply this by the wagering requirement

Free spins:

  • Calculate your winnings from the free games
    Multiply this by the wagering requirement

This will give you the total amount you have to wager before you can unlock your bonus or winnings as cash.

How to calculate the wagering requirement

Still not sure how it works? Here’s an example.

You’re offered a sign up bonus that consists of a deposit match of 100% up to £100 PLUS 100 free spins with a wagering requirement of x40.

For the deposit match, you put in £100 to claim the full £100 bonus match.

Bonus: £100
Wagering requirement: x40
Amount to be wagered: £100 x40 = £4,000

For the free games, you play the spins and win £10 in bonus cash.

Bonus: £10
Wagering requirement: x40
Amount to be wagered: £10 x40 = £400

This doesn’t mean you have to deposit and lose £4,400 (the deposit match and free spins requirement combined), just that you need to cycle that value through the casino before you can unlock your winnings as cash.

There’s a growing number of welcome bonus casino sites that don’t impose wagering requirements, known as no wagering casinos, so you can keep what you win.

An important word on responsible gambling

Online casino is fun and enjoyed by millions of people across the UK. But it’s important that it does stay fun and that you remain in control of your play. Because we only partner with UK-licenced online casinos, each of the brands listed on Comparasino offers the tools you need to do this.


But some of these tools might be unfamiliar and it can also be tough to determine if you, or a family member or friend, could potentially have a gambling problem. That’s why we’ve created a Safe Gaming Hub where you can find information about all the responsible gambling tools offered at online casinos, how they work and which ones might be best for you.


It also contains insights into some of the early signs of problem play to be aware of in yourself and others as well as direct access to charities and organisations that support those with problem gambling habits.

Head to the Safe Gaming Hub