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Casino Bonus Calculator: Know Your Wagering Requirement Before You Claim

Built by Cameron Murphy, Online Casino Bonuses Expert | Fact-checked by Dermot, Casino Specialist | Updated: August 2026

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This page is written by
Cameron Murphy
Cameron MurphyOnline Casino Expert
Fact Checked By
Rebecca Mackay
Rebecca MackayContent Advisor
According to our Editorial Guide

On average, I dedicate about 130 hours each week doing research on the Irish casino bonuses, looking into terms and conditions so that you won’t have to do it yourself and comparing the wagering requirements for tens of casino operators. However, the most important issue that catches gamblers unawares is not an inappropriate bonus offer, but rather lack of understanding about the amount of money they should wager in order to be able to withdraw their winnings. The following calculator will calculate all the necessary numbers for you within seconds.

Use the Casino Bonus Calculator

Wagering RTP CalculatorQuestion Icon
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Why You Can Trust This Calculator?

The underlying logic of this calculator is the same formula that any license operator uses to calculate his or her own rollover requirements, which is simply a multiplier of the bonus (or bonus + deposit, depending on the offer) by the rollover rate mentioned. This calculator was not developed in a vacuum; all calculations are double-checked against actual bonus conditions that have been tested personally at each of the casinos featured in the list of casino bonuses

This calculator operates only in your web browser. No information entered into the calculator is being transferred to a server and saved; it allows you to calculate the value of the bonus privately without creating an account.

There is one important drawback about this calculator: that it will only calculate the total number that you need to play to using the data you input; but it does not take into account other aspects of the bonuses which can be different from casino to casino, such as game contributions, max bets allowed during the play through of the bonus and time limits.

How to Use the Calculator

Worked Example

For instance, consider a case where you deposit €100 in a casino that gives you a 100% matching bonus up to €100 on your deposit and a 35x wagering requirement on just the bonus portion.

The bonus will be: €100 × 100% = €100

Wagering requirement: €100 × 35 = €3,500 in total wagers needed before withdrawing the bonus funds

What would be the situation if the 35x wagering requirement had been set on the combined amount? (Deposit and bonus)

Base amount: €100 (deposit) + €100 (bonus) = €200

Wagering requirement: €200 × 35 = €7,000

That is the same offer but twice the wagering requirements, highlighting how important it is to check just one small detail among the bonus terms.

The Reason Wagering Requirements Are Necessary

While it’s tempting to look at wagering requirements as something that merely makes it harder for players to cash in on their bonuses, they do have a very legitimate use. A wagering requirement forces people to actually use the funds awarded before allowing them to convert them into money that can be withdrawn and does so for two good reasons – one is making sure that casinos meet their anti-money laundering standards, the other one is protecting operators from players who would deposit, take a bonus and then withdraw without playing.

If you want more detailed information about various wagering requirements, head to our comprehensive guide on the topic.

Tips for Choosing a Bonus Worth Claiming

  • Lower multipliers on wagering requirements are usually a better deal even if it sounds like they offer less at first glance, a €50 with 20x will give you more than a €100 with 50x

  • See if the wagering requirement covers the bonus, or the bonus and deposit together, as shown in the examples above — it could change how many hands you need to play by itself.

  • Look into maximum bet while using the bonus. Some gambling sites will cancel your bonus right away if you make any single bet bigger than a specified sum during the process.

  • Find out the weighting for different games before starting to wager. Table games may contribute from 10% to 25% of their value to a wagering requirement; that means grinding the requirement on roulette will take much more time than the numbers show.

  • Time limit counts, too. Even generous bonuses with a 3-day window will not be as good as lower but with a 30-day window.

In simple terms, a wagering requirement is the minimum amount of money a player must bet on selected casino games to make a cash withdrawal. Unless players opt for a no-wager casino, no one can escape these bonus wagering requirements when playing any casino game, from video poker to slots. This casino bonus calculator will tell you exactly how much you need to wager with minimum effort from your end.

Apart from choosing your favourite online casino games from Irish online casinos based on their level of entertainment, it is a common fact that casino bonuses play a huge part in most players' game selection. Most online casinos, including Irish casino sites, offer the best casino bonus, free spins, or other promotions to make their games more entertaining. However, no matter how attractive this bonus looks, whether the offer includes bonus money, a deposit bonus or bonus spins, there's always a catch in mind, these wagering requirements.  Let's get into how it works and what to keep in mind! 

Betting On Sport As Well? Don't Forget To Check The Returns Too

If you have horses and slots in your line of betting, the same idea of being aware of the figures before getting involved is also relevant to sports betting. With our horse betting calculator, the exact amount that will be returned by your win, each way, and accumulator bets is calculated in advance.

Responsible Gambling

While a bonus calculator may inform you of how much you need to wager, it will not determine whether that amount is within your budget or whether a bonus would be good to use at the moment. Take every number you get from the tool as something to consider when planning your budget. Some behaviors which you might want to follow prior to claiming any bonuses:

  • Establish your budget prior to calculating. Determine the amount of money you will be depositing no matter whether there is a bonus offered or not. Then, you may take the bonus as a bonus.

  • Do not be tempted by a low wagering requirement to deposit higher amounts than you have planned. The "high-value bonus" is of no use if you will be depositing an amount exceeding your usual budget.

  • Be aware of the desire to chase a wagering requirement. It should not serve as the reason to increase your bets.

  • Consider using deposit limits, loss limits, or time-outs if you would benefit from that – most of the licensed Irish gambling operators provide such services for free.

If gambling stops feeling like fun, free and confidential support is available:

18+. Please gamble responsibly.

Think You've Found an Error?

Gambling terminology and offers from operators shift around, and if the number provided on this page or in the bonus calculator differs from what you see at the operator, we need to know. The importance of getting it right outweighs the importance of getting it right the first time.

You can highlight any errors that come your way using one of two methods:

Contact us directly through our Contact Us page for anything pertaining to the terminology of bonuses or wagering requirements, Cameron Murphy is the guy to email and checks all messages received.

Meet the man behind this page. Learn more about Cameron and his background in researching casino bonuses on our Meet the Team page.

Casino Bonus Calculator FAQs

To finish off this article, here are a few frequently asked questions that might support you in times of need.

How do I calculate a casino bonus wagering requirement?

The value, the number of wagers on which it depends (whether on bonus or on bonus plus deposit), must be multiplied by the multiplier. Thus, if your bonus is equal to 100 EUR and you need to make 35 bets on it, the sum will be 3,500 EUR.

Does wagering apply to my deposit or just the bonus?

This all depends on how the bonus is structured, some casinos wager on just the bonus money while others do it on both the bonus and deposit together. This is an important point to note because it could double the total amount wagered.

Do all casino games count equally toward wagering requirements?

No. Slot machine contributions generally amount to 100%, whereas table games such as blackjack and roulette may be assigned very low percentages of around 10-25%. The specific numbers will vary depending on individual casinos’ terms and conditions.

Does this calculator store any of my information?

No. It runs entirely in your browser and doesn't send your inputs to a server or save them.

Casino Veteran

An online casino expert of 12 years, Cameron Murphy knows the ins and outs of Irish online casinos. Cameron specialises in online casino reviews, gambling regulations, and providing quality content on online casino games.

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