Casino Wagering Calculator: Bonus EV Analysis 2026
Calculate if your casino bonus is worth playing. See real expected value before claiming.
Game Contribution: 100%
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Advanced Options
$100 - ($3,500 × 4.0%) = $-40.00
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The Math Behind Wagering
Understanding bonus expected value calculations
EV Formula
$100 - ($3,500 × 4%) = -$40
Total Wagering
$100 × 35x = $3,500
House Edge
100% - 96% = 4%
Completion Rate
Monte Carlo simulation
How Wagering Requirements Work
Bonus Received
Casino gives you bonus money, but you can't withdraw it immediately. It's 'locked' until you meet wagering requirements.
Wagering Required
You must bet the bonus amount multiplied by the wagering requirement. Each spin counts toward this target.
House Edge Takes Cut
Every bet has a house edge (100% - RTP). Over $3,500 in bets, you'll statistically lose a percentage.
Real Value Calculated
Your real bonus value is the original bonus minus expected losses during wagering.
Wagering Examples
Expected value for $100 bonus at 96% RTP
| Wagering | Total Bets | Expected Loss | Bonus EV |
|---|---|---|---|
| 20x | $2,000 | $80 | +$20 |
| 30x | $3,000 | $120 | -$20 |
| 35x | $3,500 | $140 | -$40 |
| 40x | $4,000 | $160 | -$60 |
| 50x | $5,000 | $200 | -$100 |
Pro Tips for Bonus Hunting
Choose High RTP Games
Play slots with 97%+ RTP when wagering. Every 1% RTP improvement saves you $35 per $100 bonus at 35x wagering.
Check Game Contributions
Some games only contribute 10-50% to wagering. A 96% RTP slot contributing 100% is better than 99% blackjack contributing 10%.
Lower Wagering > Bigger Bonus
A $50 bonus with 20x wagering has better EV than a $100 bonus with 50x wagering. Always calculate, never assume.
Frequently Asked Questions
About Our Wagering Calculator
Our professional wagering calculator instantly analyzes any casino bonus to show you its true expected value. Whether you're a casual player or a bonus hunter, understanding wagering requirements is crucial to making profitable decisions.
The calculator accounts for the bonus amount, wagering multiplier, game RTP, and estimates completion time and probability. The Pro mode lets you compare multiple bonuses side-by-side to find the best value among different casinos.
This tool is 100% free, works instantly as you adjust values, and requires no registration. Updated for 2026 with the latest bonus math used by professional casino players worldwide.
What a Wagering Calculator Is and Why You Need One
The short version: a wagering calculator shows you how much you need to wager before you can cash out a casino bonus, and whether it is worth your time in the first place. You enter the bonus amount, the wagering requirement multiplier, and the RTP of your chosen games, and the tool works out your total wagering, expected loss, and the real EV of the bonus. Below we cover what this tool does, why it matters, how the wagering requirement math works, and how to use the calculator on toolsgambling.com.
What This Tool Does
A wagering calculator turns a casino's marketing numbers into honest money figures. A casino advertises a 100% bonus up to $100, then buries a 35x or 40x wagering requirement in the small print. That means you have to wager the bonus amount 35 or 40 times before you can withdraw anything. The calculator takes your inputs and immediately shows you what that adds up to in total bets, and what your average loss will be along the way.
The real value here is that the tool shows you the actual worth of a bonus, not the advertised one. Behind the attractive "$100 bonus" headline there is often a mathematically negative expected value: you will wager more than you will ever get back. The wagering calculator works out the EV accounting for the casino's house edge, and gives you a straight answer on whether the bonus is positive or negative before you make a deposit.
The first time I ran my favourite welcome bonus through this calculator, it was a real eye-opener. A $200 bonus with a 45x wagering requirement on slots with 96% RTP gave me a negative expected value, not a positive one. Since then I never take a bonus without checking it here first, and I have already turned down a dozen offers that looked generous on paper but were a trap by the math.
Why You Need a Wagering Calculator
The core point is that a bonus with a wagering requirement is not a gift, it is a deal, and the calculator shows you the real terms of that deal. Most players only look at the bonus size and overlook the wagering multiplier, the RTP, and the max bet. Those three numbers are what actually determine whether you come out ahead or lose your deposit. Here are three concrete reasons to run the numbers on any bonus before you commit.
See the Real Value, Not the Marketing Figure
The calculator gives you the EV of the bonus straight away. A positive EV means you are ahead on average, a negative EV means the bonus is mathematically not worth taking. This fixes the classic beginner mistake of seeing "100% bonus" and assuming you have received free money. In reality, a high wagering requirement can easily turn a generous-looking bonus into a slow drain on your deposit.
Compare Two Bonuses on Their Math
A $100 bonus with a 30x wagering requirement is almost always a better deal than a $200 bonus with a 50x wagering requirement, even though the second one looks bigger. In pro mode, the calculator compares multiple offers side by side on real EV and ROI, so you can see immediately which casino is offering the better deal, not just the bigger number on the banner.
Judge Whether the Wagering Is Realistically Achievable
The calculator shows you the total wagering amount, the approximate number of spins, and the estimated time to complete the playthrough. Sometimes it turns out that meeting the wagering requirement within the time limit is simply not realistic without placing large bets that would breach the max bet rule. It is far better to know that before you deposit than to end up stuck with a locked bonus and a frozen balance.
How the Wagering Requirement Math Works
The core formula is straightforward. Total wagering equals the bonus amount multiplied by the wagering multiplier. A $100 bonus with a 35x wagering requirement means $3,500 in total bets. Sometimes the wagering requirement is calculated on the bonus plus the deposit combined, which pushes the total even higher. The calculator accounts for this and shows you the final amount you need to wager before the bonus becomes withdrawable cash.
From there, RTP and house edge come into play. An RTP of 96% means the casino takes back 4% of every bet on average, and that 4% is the house edge. To estimate your expected loss, the tool multiplies the total wagering by the house edge. On $3,500 of wagering with a 4% house edge, you will lose around $140 on average along the way. If that figure is larger than the bonus itself, the deal is negative.
The final figure is the expected value of the bonus: the bonus amount minus the expected loss from completing the wagering. If the bonus is $100 and the expected loss is $140, the real EV is minus $40. One important factor is game weighting/contribution: slots typically count at 100%, while table games like blackjack count at 10% or are excluded entirely. The calculator works from the RTP of your chosen game, so enter the RTP for the games you will actually be playing.
How to Use the Wagering Calculator on toolsgambling.com
The tool runs entirely in your browser on toolsgambling.com, it is free and requires no sign-up. Results update live as you change any input. Here is the step-by-step process from entering your bonus to getting your verdict.
- 01
Enter Your Bonus Amount
Enter the bonus amount the casino is giving you. This could be a fixed sum or the result of a percentage bonus matched to your deposit. Use the quick-select buttons or type your own value.
- 02
Set Your Wagering Multiplier
Find the wagering requirement in the bonus terms, typically somewhere between 20x and 50x, and enter it. Make sure you check whether the wagering is calculated on the bonus only or on the bonus plus deposit combined, because that makes a significant difference to the total.
- 03
Choose Your Game RTP
Enter the RTP of the games you will be playing through the wagering requirement. For slots this is usually between 94% and 98%, and the higher the RTP, the lower your expected loss on the playthrough. Keep game weighting/contribution in mind: slots with 100% contribution are almost always the most efficient choice for clearing a wagering requirement.
- 04
Set Your Max Bet
Enter the max bet limit from the bonus terms, usually around $5. Exceeding this limit almost always results in your bonus being voided, so the tool factors it in when estimating how long the playthrough will take.
- 05
Read Your Verdict and Compare
Check the expected value, the expected loss, and the verdict on whether the bonus is worth taking. If the bonus comes back negative, switch to pro mode and compare it against other offers to find the one that actually works in your favour.
Common Wagering Mistakes to Avoid
Most losses on bonuses come not from bad luck but from predictable mistakes. Here are the four most common ones, and how the calculator helps you avoid them.
Focusing on the Bonus Size Instead of the Wagering Requirement
A large bonus with a high wagering multiplier is almost always worse than a smaller bonus with a low wagering requirement. The total wagering grows with the multiplier, and your expected loss grows with it. Always calculate the real EV, not the headline figure in the promotion.
Playing the Wrong Games During Wagering
Table games and live casino titles typically count at 10% or zero toward the wagering requirement, while slots count at 100%. Playing through your wagering on blackjack will not help you, even if the house edge is lower, because the game contribution is tiny. Stick to games with full contribution and the highest RTP you can find.
Exceeding the Max Bet Limit
Trying to clear the wagering requirement faster by placing larger bets is a direct route to having your bonus voided. Casinos monitor bets above the limit and will simply cancel the bonus and any winnings attached to it. Stay within the stated max bet even if the playthrough feels slow.
Ignoring the Wagering Deadline
Almost every bonus has an expiry, typically 7 or 30 days. If the total wagering amount is too large to complete within that window at the permitted max bet, you will not physically be able to finish in time. The calculator gives you an estimated completion time, so check it before you deposit.
Wagering Terms Glossary
To read bonus terms and calculator results without getting confused, keep these key concepts handy. Every one of them affects the final value of a bonus.
Key Concepts
- The multiplier that tells you how many times you must wager the bonus before you can withdraw. A 35x wagering requirement on a $100 bonus means $3,500 in total bets. The higher the multiplier, the harder and more expensive the playthrough.
- RTP is the percentage a game returns to players on average, for example 96%. The house edge is the flip side of that, the 4% the casino takes from every bet on average. The house edge is what determines your expected loss over the course of the wagering.
- The share of each bet that counts toward your wagering requirement. Slots typically contribute 100%, roulette and blackjack contribute 10% or less, and some games are excluded entirely. Without accounting for game contribution, your wagering calculation will be wrong.
- The bonus amount minus the expected loss from completing the wagering requirement. A positive EV means the bonus is worth taking on average, a negative EV means you will lose more than you gain over time. This is the number the wagering calculator is built to give you.
- A sticky bonus cannot be withdrawn. It sits on your balance and boosts your play but disappears when you cash out. A non-sticky (or cashable) bonus can be withdrawn after you complete the wagering requirement. The type of bonus makes a significant difference to its real value.
- The maximum stake allowed on a single bet while wagering a bonus, usually around $5. Exceeding this limit results in the bonus being voided, which means it directly affects both the speed and the feasibility of completing the wagering requirement on time.
Wagering Requirement
RTP and House Edge
Game Weighting/Contribution
Expected Value (EV)
Sticky and Non-Sticky Bonus
Max Bet
Important
The calculator shows a mathematical model of the wagering requirement based on standard rules. A specific casino may calculate wagering on the bonus plus deposit, apply its own game weighting/contribution rules, and set different limits and deadlines. Always read the full bonus terms before depositing, and treat the calculator's output as an honest estimate of expected value, not a guarantee of any specific result.
Free Tools on toolsgambling.com
On toolsgambling.com you can use an RTP calculator, a house edge calculator, the Red Door Roulette Calculator, and dozens of other tools for free with no sign-up required. They work alongside the wagering calculator: calculate the real EV of a bonus here, check the RTP of a specific game in a separate tool, and compare the house edge across different games right next door.
Gamble Responsibly
Bonuses are a casino marketing tool, not a source of income. A high wagering requirement is designed to keep you playing longer and losing more. Only take bonuses that are mathematically positive, only wager what you can afford to lose, never chase your wagering requirement with borrowed money, and never try to win back losses. 18+. If gambling stops being fun, get free support at BeGambleAware.org.
Evgeniy Volkov
Fullstack developer with a background in mathematics. I build the calculators and game-style tools on ToolsGambling with Pixi.js and modern web tech, and every result uses transparent probability formulas you can verify yourself.