Tools · 2026
Casino bonus calculator
You must wager the bonus — or deposit plus bonus — times the wagering multiple, then divide by the game’s contribution. A €100 deposit with a 100% bonus and 35× on the bonus is €3,500 of bets on 100% slots. Drop contribution to 10% and that same offer becomes €35,000. That is the number this calculator shows.
Amount you must wager
You need to wager
€3,500
A €100 deposit at 100% gives €100 in bonus funds. Wagering ×35 on the bonus is €3,500. At 100% game contribution you must actually bet €3,500 before winnings can be withdrawn.
Bonus terms vary. Casinos change wagering, game lists and max-bet rules. Always read the offer T&Cs before you opt in.
Not financial advice. This tool only does the arithmetic. It does not say a bonus is worth taking, and it cannot predict wins or losses.
18+ only. Gambling can be addictive — play responsibly.
How the math works
How to read the result
Casinos advertise the match. They hide the playthrough. The formula is dull on purpose: (wager base × wagering) ÷ (contribution ÷ 100). The wager base is either the bonus alone or the deposit and bonus together — the terms will say which.
A lower headline with fair wagering often costs less to clear than a huge match at 50×. Game weighting is the trap people miss. We keep this page free of operator ratings so the figure you see is your inputs, not a sales pitch. For the wording behind the numbers, see casino bonuses explained and the bonus hub.
Good to know
Bonus calculator FAQ
How much do I need to wager to clear a casino bonus?
Multiply the amount the wagering applies to (the bonus, or deposit plus bonus) by the wagering multiple, then divide by the game contribution. A €100 bonus with 35× wagering on the bonus and 100% slot contribution means €3,500 in bets. On a 10% table game that same offer becomes €35,000.
What is game contribution on a casino bonus?
It is the share of each bet that counts toward wagering. Slots usually count 100%. Blackjack, roulette and live tables often count 10% or less, and some games count 0% and cannot clear the bonus at all. Check the weighting table in the offer terms — it is not the same at every casino.
Does wagering apply to the bonus only or to deposit plus bonus?
It depends on the terms. “35× bonus” on a €100 match is €3,500. “35× deposit + bonus” on the same €100 deposit and €100 bonus is €7,000. Use the toggle on this calculator to match the wording in the T&Cs before you decide the offer is worth it.
Is this bonus calculator financial advice?
No. It only does the arithmetic on the numbers you enter. Bonus terms vary and can change. It does not predict wins, recommend an operator, or replace the casino’s own rules. 18+ only — treat gambling as paid entertainment, not income.
Keep exploring
Use the number, then read the terms and the casinos — not the other way around.
18+ only. This calculator is not financial advice. Bonus terms vary by operator and can change without notice. Gambling can be addictive — please play responsibly. Help is available at BeGambleAware.org and on our responsible gambling page.