First Deposit Bonus for UK Players

22 August, 2026

The best first deposit bonus for UK players must have fair wagering requirements and extras like free spins. Also known as the welcome bonus, this is the initial offer for players when they register at a UK online casino.
Accepting a signup bonus or first deposit bonus casino promotions can boost your overall gambling experience in many ways. Not only do you get bonus money to use on your favourite games and sports betting, but you also enjoy bonus spins on select slots.
If you are looking for the best online casino bonuses for new UK casino players, search no more. We have compiled a list of the best and most popular first deposit bonuses at casinos licensed by the UK Gambling Commission. Continue reading to get the maximum bonus value for your first deposit.

Affiliate Disclosure: At Bestcasino, we strive to match players with top casino offerings. Some links are affiliate links, which means we earn a commission if you visit the website through our link and make a deposit, at no extra cost to you. Our reviews and recommendations remain unbiased and follow strict editorial standards.

Top 1
Hyper 3.8/5
100% up to £100
  • High withdrawal limit
  • Large selection of games
  • Live dealer games available
Ad | 18+ | Welcome bonus for a new players only. Maximum bonus is 100% up to $/€/£ 100. Min deposit is $/€/£ 10. No max cash out. Wagering is 45x bonus. Maximum bet while playing with a bonus is $/€/£ 5. Eligibility is restricted for a suspected abuse. Skrill and Neteller deposits excluded | Play responsibly | T&Cs apply
Top 2
Mr Play 4.0/5
£200 100 free spins
  • Great selection of game providers
  • Great selection of live games
  • VIP program available
Ad | 18+ | Welcome package includes 3 deposit bonuses as follows: First Deposit: 100% up to £50 + 20 Spins on Starburst *Min. Deposit £10 Second Deposit: 50% up to £75 *Min. Deposit £20 Third Deposit: 50% up to £75 *Min. Deposit £20 After first deposit made, customers will get + 20 Spin for the next 4 days: 1st day after First Deposit: 20 Spins of Finn and the Swirly Spin 2nd day after First Deposit: 20 Spins of Book of Dead 3rd day after First Deposit: 20 Spins of VIP Black 4th day after First Deposit: 20 Spins of Aloha! Cluster Pays Winnings won with spins that require deposit, have to be wagered 35x. Bonuses that require deposit, have to be wagered 35x. This offer is available to players residing in United Kingdom only. | Play responsibly | T&Cs apply
Top 3
All British Casino 3.6/5
UK favorite free spins 100% up to £100 + 10% cashback
  • 3000+ casino games
  • No fees on withdrawals
  • Withdrawals are processed in 24 hours
Ad | 18+ | Welcome bonus for new players only | Maximum bonus is 100% up to £100 | Min. deposit is £20 | No max cash out | Wagering is 35x bonus | Maximum bet with an active bonus is £5 | Eligibility is restricted for suspected abuse | Cashback is cash with no restrictions | Skrill & Neteller deposits excluded | Cashback applies to deposits where no bonus is included | Play responsibly | T&Cs apply
4
Casumo 3.8/5
100% up to £100 50 free spins
  • Exclusive Casumo jackpots
  • High withdrawal limits
  • 24/7 customer support
Ad | 18+ | New customers. Opt-in required. 50 Bonus Spins on “Big Bass Bonanza” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £20. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Payment restrictions apply | Play responsibly | T&Cs apply
5
Funky Jackpot 4.4/5
100% up to £100 25 free spins
  • Huge game selection with 2,500+ titles
  • 24/7 live chat support
  • Games from top providers like NetEnt
Ad | 18+ | New Players Only. Wager from real balance first. 50X wager the bonus. Contribution varies per game. Selected games only. Wager calculated on bonus bets only. Bonus valid 30 days / Free spins valid 7 days from receipt. Max conversion: 3 times the bonus amount or from free spins: £20. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. | Play responsibly | T&Cs apply
6
Ice36 4.0/5
100% up to £50
  • Unlimited monthly withdrawals
  • Extensive live casino collection
  • Daily tournaments
Ad | 18+ | Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10, max. Bonus £50. WR of 30x Deposit Plus Bonus amount (Slots count 100% and any other game 10%) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies).Bonus must be claimed before using deposited funds. Bonuses do not prevent withdrawing deposit balance. Bonus Policy applies. | Play responsibly | T&Cs apply
7
Videoslots 4.6/5
100% up to £200 11 free spins
  • Huge game selection
  • Large selection of game providers
  • Many Casinomeister awards
Ad | 18+ | Get 100% deposit bonus up to £ 200 on your first deposit. Your bonus is immediately available for activation after you have made your first deposit. To activate your bonus, go to “My Profile” → “My Bonuses”. With only 35 times wager requirement! | Play responsibly | T&Cs apply

Best UK Casinos With a First Deposit Bonus

FeatureHyper CasinoMrPlayAllBritish CasinoCasumoRizk
First bonus:100% up to £100100% match bonus up to £200 and 100 free spins100% up to £100 plus 10% cashback on Paypal100% up to £25 cash and 25 free spins£100 plus 50 free spins
Max bet limit using bonus:£5£10£5£5£10
Min first deposit: £10£10£10£10£10
Wagering requirement:45x35x35x30x40x
Payment methods excluded:Neteller, SkrillOnly available to players residing in the UKSkrill and NetellerNeteller, Skrill
Other T&Cs:The cashback is applied on deposits that do not include the welcome bonus.Free spins can only be used on the Shara Riched slot
FeaturePlayFrankIce36PlayOJOVideoslots
First bonus:£100 and 50 bonus spins100% up to £5050 free spins no wagering (1 spin for each £1)100% up to £200
Max bet limit using bonus:£10£5£5£20
Min first deposit: £20£10£10£20
Wagering requirement:35x30xNo wagering required35x
Payment methods excluded:Neteller, Skrill
Other T&Cs:You can win up to £500 using the bonus.You can get cashback after making the first bet.The welcome bonus cannot be used alongside other bonuses.

What Is a First Deposit Bonus?

The online casino sector is extremely competitive. Operators know you can take your pick of many top casinos. So, they use deposit bonuses to convince you to choose them. A first deposit bonus encourages you to join and deposit at a new casino and rewards you with free spins and/or bonus credits for doing so.

If you join a casino with first deposit bonus offers, you’ll need to meet the minimum deposit requirement and will then receive your bonus. From there, you can use the credits or free spins, clear the wagering requirements (if applicable), and then withdraw whatever is left over.

Best UK Casinos With a First Deposit Bonus

First deposit bonuses vary by size and terms, but my advice is to focus on what matters most to you. For example, I typically deposit just £20 or so at a time. If a bonus offers a 100% match up to £500, it’s obviously going to entice me more than a bonus that offers a 100% match up to £50. In reality, though, I’ll only be depositing £20 on both of them, so either way, I’m getting £20 in bonus credits.

There’s no such thing as the best first deposit bonus casino in the UK, as it all depends on the player. What looks great to a high roller could be out of reach to the average player, and what seems generous to a small stakes player will look tame to a high roller. So, if you’re looking for a first deposit bonus in the UK, calculate the value of the deposit match, consider the minimum deposit requirement and wagering requirement, and don’t overlook the maximum cash-out amount.

For example, a casino with a first deposit bonus may offer you 100 free spins with no wagering and a small minimum deposit. But if you check the terms, you could discover a cash-out limit of just 3x your deposit. 

Take it from me—it’s all about the terms, and they often have a bigger impact on the quality of a first deposit bonus than the promotional messages promising big offers.

With that said, here’s my pick of the best first deposit bonuses in the UK:

CasinoBonusWager requirementsMinimum deposit
Hyper Casino50 Free Spins on Wanted Dead or a WildNone£10
All British Casino100 Free Spins on Le BanditNone£10
Casumo50% Deposit Bonus up to £10010x£20
Funky Jackpot25% up to £50 and 25 Free Spins on Cash Bonanza10x£10
Ice 36100% up to £2510x£10
Videoslots100% up to £50 and 11 Wager-Free Spins10x for bonus; none for free spins£10

These offers may seem modest when compared to first deposit bonuses promising hundreds of free spins and deposit matches of up to £500. But, as I noted above, the terms are incredibly important. The most you’re expected to clear during the wagering period is 10x, which equates to a total of just £100 from a £10 bonus. Several of them don’t even have wagering requirements, so you get to keep every penny you win.

What Makes a First Deposit Bonus Actually Valuable?

To understand the true value of a first deposit casino bonus, you need to put the old grey matter to the test.

For example, let’s consider two different bonus offers:

  • 100% match up to £50

  • 500 free spins

On the surface, the second offer seems like the best option, even if we assume the cash-out limits and wagering requirements are the same. But there’s one other key factor: the free spin value.

If each free spin has a value of £0.05, those 500 free spins are worth just £25. Even if they have a value of £0.10, which is more common, it’s still just £50. In that case, it’s on par with the 100% deposit offer, but you can use those £50 bonus credits on most casino games, while the £50 in free spins will likely be limited to just one or two slots.

Don’t be tempted by big numbers on first deposit bonuses—always consider the true value before you collect. You will find all the information you need in the bonus terms and conditions. I have also listed the best options (and their key terms) on this page to make it easier for you to find the latest offers.

Key Bonus Terms and Conditions to Watch Out For

I’ve already mentioned a few key terms and conditions, but there are more, and you may be overlooking some of them:

Min/max bonuses: The minimum deposit amount and maximum bonus amount. There’s no hard and fast rule here. A 100% deposit bonus could have a minimum deposit of £10 and a maximum of £500 or more. A 500% first deposit bonus may require a minimum deposit of £10 and have a maximum bonus of just £100.

Wagering requirement: Displayed as a multiplier (such as 10x or 20x), the wagering requirement denotes how many times you must play through the bonus funds. A 10x wagering requirement on a £100 bonus means you need to wager £1,000. Remember, “wager” doesn’t mean “lose”, and if you take 100 £1 spins and win £1,000, you’ve still cleared £100 from your wagering requirement.

Max cash-out: The most that you can withdraw from a single bonus. You may be allowed to win more than this but can’t withdraw anything over the maximum cash-out amount.

Payment limits: Many UK casinos will void first deposit bonuses if you deposit using Skrill, Neteller, or Paysafecard. Some even exclude PayPal.

Game limits: It’s common for a casino with first deposit bonus offers to limit your bonus credits and free spins to specific games. You can’t use your bonus on games not included on the permitted list, and they may not count toward the wagering requirement.

Time limits: You have a fixed time period to collect and use the bonuses. Typically, you’ll have at least 24 hours to collect and a week to use or clear the wagering requirement. Sometimes, it’s much less. Only once have I exceeded this time limit, and that was a substantial wagering requirement that I had just a few days to clear. Still, if you only play short daily sessions, it’s worth double-checking this term.

Can You Withdraw Winnings From a First Deposit Bonus?

A casino with first deposit bonus offers often has wagering requirements, and you can’t withdraw bonus funds until you meet these requirements. You can withdraw your real money balance during this time. However, doing so will likely void your bonus.

These days, many first deposit bonus offers on UK casinos have either low or no wagering requirements. For example, I recently collected 100 free spins with no wagering requirements. I won £18.50 from those free spins, and that money appeared as cash in my account.

The casino had a minimum withdrawal amount of £20, so I fell a little short. However, UK regulations mean that casinos must always allow players to withdraw their full real money balance if and when they choose. So, after contacting the casino, I was able to withdraw that £18.50. I had to pay a 5% fee for the pleasure (fees are common if you withdraw less than the minimum amount), but I was playing with profit at that point, so I didn’t mind.

If you find yourself in a similar position and don’t want to deposit or risk more just to hit the minimum withdrawal amount, contact the support team, request a full withdrawal, and ask them about their fee structure.

How Bestcasino UK Reviews and Selects First Deposit Bonuses

With over a decade of combined experience across eight gambling jurisdictions, Bestcasino is a trusted name in online casino reviews. Since 2019, our expert team has written more than 280 casino guides, helping players find the best bonuses, including cashback bonuses, deposit match bonuses, free spins, and more.

If you’re looking for honest, unbiased reviews, you’ve come to the right place. Our specialists use a thorough methodology to analyze, test, and verify online casinos and their bonus offerings.

How we evaluate first deposit bonuses?

Wagering requirements

Wagering requirements are a key factor in evaluating casino bonuses. These requirements determine how much you need to wager before withdrawing winnings from bonuses or free spins.

For example, if Ice36 Casino’s deposit bonus has a 30x wagering requirement and you receive £30 in bonus funds, you must wager £900 (£30 × 30) before withdrawing your winnings.

When assessing these requirements, we consider:

The penalty if players fail to meet wagering requirements.

How wagering requirements for sign-up bonuses compare to other promotions.

Time limits for completing wagering requirements, especially for free spins.

Whether wagering applies to both cash stakes and free spins.

If the bonus terms allow players to withdraw winnings before completing wagering requirements.

Expiration terms for bonus funds if wagering isn’t met in time.

Available games

A diverse game selection is vital, but restrictions on bonus use must also be considered. We assess:

Which games are eligible for the first deposit bonus.

Game contributions toward meeting wagering requirements. For example, Hyper Casino requires players to reach a £40 balance before withdrawing winnings from a no-deposit bonus.

Whether bonuses can be used on high-payout games like jackpots.

The average RTP (Return to Player) of eligible games.

Availability of live dealer games for bonus use.

Maximum bet limits when using bonus funds.

Deposit and Withdrawal limits

We must also consider the deposit and withdrawal limits when looking for the best casino deposit bonuses. After all, UK players need to know how much of their wins from the first bonus they can withdraw. The deposit and withdrawal limits of a UK casino bonus are essential, whether you are a high bankroller or a low bankroller. Deposit and withdrawal limits affect how much you can get from UK casino bonuses and the number of gaming sessions you can play.

Minimum deposit amounts required to claim a bonus.

Whether bonuses are awarded all at once or in phases (e.g., Mr Play’s bonuses are split across four deposits).

If larger deposits unlock higher bonus amounts.

Withdrawal limits on bonus winnings. For instance, would Mr Green Casino allow you to withdraw £2,000 in winnings from bonus spins?

Terms for withdrawing jackpot winnings earned using bonus funds.

Conditions for opting out of bonuses mid-way.

Penalties for suspected bonus abuse.

Licensing and Security

While entertainment and having a good time winning on bets is the goal for most players, we also focus on licensed and secure gaming. Research proves that more casinos in Britain are building technologies to boost security for players.

Most importantly, we only recommend and feature promo codes at casino sites licensed and recognised by the UK Gambling Commission. Whether you play at a licensed or a non-licensed casino will determine how much fun you will have with an active bonus at your favourite gambling site. Regulation and licensing affect the casino site bonus terms, the size of online casino promotions, bonus spins and bonus funds.

Here are the benefits of playing an online casino bonus offer at UKGC-licensed gambling sites:

  • Accepting a casino bonus at a licensed casino allows you to opt out whenever possible.
  • UKGC-licensed casino bonus sites let players keep what is left of the deposit and any winnings you could have won from the deposit.
  • A licensed casino will always let you know whether you are playing using your own money or the free cash (including free spins).
  • Once you have accepted any casino bonuses, the free spins or first deposit bonus funds details cannot be changed.

Any other first deposit bonus terms and conditions

There are hundreds of online casino bonuses in UK online casinos. Therefore, picking the best minimum deposit bonus for British players requires an in-depth look at other terms at the casino. Even the top 10 casinos listed at Bestcasino.com have different terms on their casino bonuses.

Therefore, we shall always scrutinise all T&Cs of casino bonuses before recommending any online casinos to our readers.

  • Do responsible gambling tools cover the casino bonuses? For example, can players still self-exclude even with an active casino bonus?
  • What is the penalty for opting out of deposit bonus spins or sign up bonus after you have already created wins?
  • What happens to your bonus wins if you have met the wagering requirements but haven’t requested a payout by the date the bonus or the free spins expire?

Most Useful First Deposit Bonuses by Type

The best online casino bonus sites offer new members generous or exclusive bonuses. While the most common percentage for the match deposit bonus is 100% don’t be surprised if you see some brands offering bigger first-time UK online casino bonuses.

In most gambling sites with welcome bonus offers, the new players’ package comes with either bonus spins (free spins), cash or both. It is possible to find many online casinos offering only bonus funds. Likewise, casinos like Mr Green only give free spins in their new welcome bonus.

Matched Bonus

Below are examples of how minimum first deposit match bonuses at British gaming sites work. We are going to use £20 deposit as an example.

500% Deposit Bonus

With a £20 deposit bonus, you’d end up with £100 cash bonus. Your total bankroll would be £120.

400% Deposit Bonus

Using a £20 cash deposit, your match bonus would be £80. You then have up to £100 to use on your games.

300% Deposit Bonus

When using a £20 deposit, a 300% match bonus would give you a £60 cash bonus. You will have £80 in total to play.

200% Deposit bonus

If you place a £20 real money deposit, the casino will give you £40 maximum bonus. You can then play with £60 in total.

100% Deposit bonus

This is the most popular match deposit amount amongst top casino bonus sites. If you make a £20 deposit, the deposit match bonus will be £20. You then have £40 to use on casino games.

Free Spins

Free Spins are casino bonuses offering free rounds on slot games. Most UK casinos require a deposit to claim them. Use bonus codes from sites like Bestcasino.com when registering at top UK casinos to get these spins. Check the casino’s bonus details for information on eligible games and winnings. Find more tips at Betscasino.com.

How to Activate First Deposit Bonus

Are you ready for your first UK casino bonus at a top site? Finding and activating the new deposit bonuses is easy, especially if you are signing up to the best British sites listed here.

Below is a step-by-step guide to claiming the best first deposit bonus cash funds or free spins.

Step 1

Casino list Illustration Bestcasino

Compare first deposit casino bonuses at Bestcasino.com

Step 2

Casino Games Illustration Bestcasino

Choose the gambling UK site with the best casino bonuses for you

Step 3

Free Spins Illustration Bestcasino

Check for bonus codes at Bestcasino.com

Step 4

Log in Illustration

Sign up at the casino

Step 5

Read terms & conditions Illustration

Read the bonus terms and claim the bonus using bonus codes

Step 6

Verification Illustration

Get KYC Verification done for easy payouts

Step 7

Responsible Gaming Illustration

Gamble responsibly using the bonus & have fun

What to Look Out For When Using  First Deposit Bonus

To find the best casino bonuses for new UK players, you need to look beyond the welcome bonus banners. While we have done the hard work of listing the best first player bonuses, you still need to pay attention to some factors, especially if the casino bonuses you choose are not listed here.

Every player who enjoys deposit or no deposit bonuses will automatically try to find the best casino sign up bonus possible. The best free casino bonus isn’t just big but also player-friendly.

Terms and Conditions

Bonus terms and conditions are always included in British casinos regulated by the UKGC. Good casino bonus terms are precise on what happens during or after the bonus is activated.

Note that even new casino bonuses have their own unique terms and conditions, so make sure to check and understand. It is advisable always to read the terms to know what you are signing up for.

  • The expiry date of the mobile casino bonus offers.
  • Consequences of bonus abuse.
  • Application of a bonus code in activating the bonus.
  • Additional terms on any no deposit bonus available.
  • Withdrawal limits on the wins you create from wagering free spins or cash from the casino online bonus.
  • Max bet allowed on games.
Read terms & conditions Illustration

Wagering requirements

As mentioned above, the wagering requirement is how much money you need to bet before you can request and receive wins from the bonus. It is usually presented as a multiplier.

Always check:

Which games contribute to achieving the wagering requirement?

Of all the games that can be played with the bonus, which games can help you meet the wagering requirement faster? For example, in most British gambling apps or sites, slots contribute 100% to the wagering requirement, while live games give only 10%.

How does the wagering requirement compare to the size of the bonus?

Minimum Deposit

What is the minimum real money deposit required for you to qualify for the sign up exclusive bonus? In simple terms, what is the qualifying deposit for the welcome bonus?

Each casino site has a minimum deposit limit that new players must make. Most top-ranked casinos in Great Britain have £10 as the minimum bonus. But there are some exceptions, like Mr Play and Mr Green, which have £5 and £20 minimum deposit respectively.

Strategies for maximising on the First Deposit bonus

Both old and the latest casino bonuses are like treasures waiting to be discovered by players. Knowing how to make the most of casino bonuses will enhance your gaming experience. Whether it is a no deposit bonus or a VIP exclusive casino bonus on deposits, the tips below will help you boost your gambling adventures.

Choose your best casinos wisely

Choose your best casinos wisely

Look beyond the huge bonus numbers indicated on the banners.

Align your gaming needs with the best bonus

Align your gaming needs with the best bonus

Eg, if you enjoy live games more than slots, choose a bonus that allows you to play live dealer games.

Pay attention to the wagering requirements

Pay attention to the wagering requirements

Truth is, it’s difficult to find no wagering casino bonuses. Most casinos have wagering requirements and will demand players to meet the wagering bonus threshold. Only accept bonuses that allow slots to contribute 100% to wagering bonuses.

Practise bankroll management

Practise bankroll management

Managing your bankroll effectively is essential. Sometimes, players see huge no deposit bonuses and get tempted to make bigger real money deposits above budget. Remember, gambling is for fun and entertainment and even in a winning streak, never deposit more than you can afford to lose. Additionally, the more you deposit, the harder it will be to meet wagering requirements. Wagering bonuses acquired by minimum deposit is far easier.

If you find a favourable no deposit bonus, use it!

No deposit bonuses are useful, especially if you don’t want to make a deposit. In an ideal situation, the free spins and bonus cash should come with no wagering demands. However, if you are looking for the best first deposit bonus casino no wagering offer, there is a downside. You will likely be required to deposit your real money balance to withdraw wins you made from the bonus.

Advantages and Disadvantages of Using First Deposit Online Casino Bonus

The UK online gambling market is saturated with online casinos and British players are always hunting for the best casino bonus. If you are still unsure whether to accept a deposit bonus, here are the pros and cons.

Advantages

  • Casino welcome bonuses give you more money to play with, without affecting your real money budget.
  • You can explore new UK casinos using the bonus funds.
  • Use the bonus to practise and perfect your strategies in some casino games.

Disadvantages

  • There might be a max win limit.
  • According to some UK iGaming sites, the most you can withdraw from the first deposit match bonuses cannot exceed your lifetime deposits at the respective British site. So it is advisable to withdraw your wins before making any further deposit.
  • According to some UK iGaming sites, the most you can withdraw from the first deposit match bonuses cannot exceed your lifetime deposits at the respective British site. So it is advisable to withdraw your wins before making any further deposit.
Slot machine slots bestcasino

Slots with First Deposit Bonuses

Slots are exciting to play, and they can offer double advantages when you use free spins to play slots. This happens when you play and activate free spins in an online slot, using the free spins from your first deposit match bonuses.

For example, in Mr Play, you can use the free spins on Book of Dead slot. In Book of Dead, you get 10 free spins when you land 3 scatter symbols and the free spins continue increasing as long as you land scatters. The best part is that in-game free spins have no wagering requirements.

Responsible Gambling

Being level-headed and remaining calm throughout gambling is vital for healthy gaming. Therefore, Bestcasino.com experts will always encourage our readers to play responsibly. Above all, we only feature casino sites that give players responsible gambling tools.

Setting Limits

How to play responsibly?

  • Set limits on the time you spend playing.
  • Set a deposit limit in your casino account.
  • Limit your gambling on low-bet games with high RTPs.
  • Take regular breaks to avoid getting overwhelmed.
  • Limit your use of alcohol when gambling.

Self-Exclusion Options

Self-exclusion is voluntarily quitting gambling. When you opt to self-exclude, it is an agreement with online casino operators not to gamble for a specific period of time.

You know it is time to self-exclude if:

  • You don’t have fun when gambling.
  • When your gambling activities interfere with your health, finances and relationships.
  • When you feel stressed from gambling.
  • If you find yourself chasing losses.

Summary

For many players, particularly slot fans who want to keep deposits and risks to a minimum, All British Casino is the best first deposit bonus casino in the UK. However, as those 100 free spins are the most you can get as a new player, this site may not appeal to high rollers.

In such cases, check out Casumo instead, where you can get a 50% match up to £100 with your first deposit. And remember, casino bonuses start with the welcome offer, but they don’t end there. Many UK casinos, including the ones outlined on this page, offer regular free spin promotions, reload promotions, loyalty schemes, real money tournaments, and more.

Frequently asked questions

What does first deposit bonus mean?

A first deposit bonus is the extra cash or spins that a casino gives you for signing up.

How does a deposit match bonus work?

The casino gives you funds matching the percentage of your deposit.

Do I have to use my first deposit bonus casino offer?

No, you don't have to use your first deposit bonus. However, you can opt out of the casino bonus offers in most casinos. However, once you accept the bonus offer, you must use it.

Can I withdraw money after activating the first deposit bonus?

You can withdraw money after activating the first deposit bonus if you meet the wagering demands.