Wagering requirements explained: the maths behind the 40×

TL;DR

A wagering requirement is the total amount you must bet before bonus winnings become withdrawable, expressed as a multiple of the bonus (or bonus plus deposit). Win €5 from free spins with a 40× requirement and you must place €200 in eligible bets before that €5 is yours; until then it is locked bonus money the casino can void under its own terms.

Why this matters

The headline of a casino offer tells you almost nothing about its value. Fifty free spins with a 5× requirement and fifty free spins with a 40× requirement are different products: the first is close to cash, the second is a long bet against the house edge. Among the offers we track, both extremes exist side by side. Slotoro's 50 free spins on Joker Stoker carry a 5× requirement, while BitStarz's 50 no-deposit spins carry 40×. Same spin count, very different odds of seeing real money.

Reading the requirement, and the rules wrapped around it, is the single highest-value habit a bonus player can build. It is also the core of what we do before publishing any offer: we read the terms first so you can decide before you sign up.

The fundamentals

What counts toward the requirement

Only eligible bets reduce the outstanding amount. Three rules decide what is eligible:

Game contribution. Slots usually contribute 100% of each bet. Table games, live dealer games and many "low-risk" plays contribute far less, often 5 to 10 percent, sometimes zero. A €10 blackjack hand at 10% contribution clears just €1 of a €200 requirement. The game contribution table in the T&Cs is where this hides.

The max-bet rule. Nearly every offer caps your stake while wagering is active, typically between €2 and €5 per spin. Bet above the cap, even once, and the operator can void the bonus and the winnings. The max-bet rule is the most common reason confiscations are upheld in complaint mediation, because the player really did break a written term.

Excluded games. Most T&Cs carry a list of slots that never contribute, usually high-RTP titles where smart play could grind through the requirement at low loss. Betting there can pause or void your progress.

Bonus-only vs deposit-plus-bonus

A "40× bonus" requirement on a €100 bonus means €4,000 in bets. A "40× deposit + bonus" requirement on a €100 deposit with a €100 bonus means €8,000. The phrasing difference doubles the maths, and operators rarely make it loud. Check which base the multiplier applies to before comparing two offers.

Sticky vs cashable

With a cashable bonus, the bonus amount itself can eventually be withdrawn once cleared. With a sticky bonus, only the winnings ever become yours and the bonus is removed at withdrawal. Most free-spin offers behave like sticky bonuses: the spin winnings are the bonus balance, and what survives the requirement is what you keep, subject to the cap below.

Max cashout: the ceiling on the whole exercise

No-deposit offers almost always cap what you can ever withdraw from them. BitStarz caps its 50-spin offer at €100; FieryPlay caps its 70-spin offer at €25. Whatever you win above the max cashout, the operator removes at payout. A requirement you cannot realistically clear, combined with a low cap, can make a flashy offer worth a few euros in expectation.

How it works in practice: a worked example

Take the BitStarz no-deposit offer as we reviewed it: 50 free spins, 40× wagering on the spin winnings, €100 max cashout, slots contributing 100%.

Suppose the spins return €6. Your requirement is €240 in eligible bets. Playing a 96% RTP slot, every €240 cycled through costs you about €9.60 in expectation. The expected loss of clearing exceeds the €6 you are protecting. That does not make the offer worthless: variance is real, the entry cost was zero, and some sessions clear with money left. It means the realistic outcome of a 40× no-deposit offer is entertainment plus a small chance of cashing the cap, not income.

Now run the same maths on Slotoro's 5× offer. A €6 spin return needs €30 of bets, costing roughly €1.20 in expectation at the same RTP. Most of the value survives. This is why our bonus pages print the wagering multiple next to every offer and why the methodology scores terms quality, not headline size.

Common pitfalls

Betting big to clear fast. The max-bet rule makes this the most expensive mistake available. Clearing speed does not change expected loss, and a single over-cap spin can void everything.

Mixing games mid-clear. Players switch to roulette "to be safe" and discover their bets contributed 0 to 10 percent. Always check the contribution table before changing games.

Ignoring the clock. Requirements expire, commonly in 3 to 30 days. An unfinished requirement at expiry usually forfeits bonus and winnings both.

Depositing while a bonus is active. On some platforms a new deposit merges with the bonus balance and inherits its restrictions. Where the terms read this way, finish or cancel the bonus before depositing again.

Trusting the welcome banner. The banner says "50 free spins". The terms say which slot, what stake the spins use, the contribution table, the cap and the deadline. Only the second list is the offer.

When the rules are different

Wagering-free offers exist, mostly in regulated markets where the regulator has pushed operators toward them, and occasionally as genuine marketing spends elsewhere. Cashback deals are sometimes paid as real money with no requirement. And licensed markets cap or ban certain structures outright. None of the offers in our current coverage are wagering-free, which is itself useful information about the offshore segment we review.

How BonusOracle applies this

Every bonus page we publish lists the wagering multiple, the base it applies to, the max cashout, the max bet and the deadline, taken from the operator's own terms on the day we checked them. Terms quality also feeds the operator's score: our five-part rubric explained on the methodology page treats predatory term patterns as a direct mark against the operator, whatever the headline offer says. When an operator changes terms after publication, the page's "last checked" date tells you how fresh our reading is.

FAQ

What does 40× wagering mean? You must place bets totalling 40 times the bonus value before winnings can be withdrawn. Winning €5 from free spins under 40× wagering means €200 in eligible bets first.

Do all games count toward wagering? No. Slots usually contribute 100%, table and live games often 5 to 10 percent or nothing, and most T&Cs exclude specific slots entirely. The contribution table in the terms is authoritative.

What is a good wagering requirement? Under 20× on bonus-only is favourable for the offshore segment; 35× to 40× is standard; anything above 50×, or any multiple applied to deposit plus bonus, deserves real scepticism.

Can a casino void my winnings for betting too much? Yes, if the terms set a maximum bet during wagering and you exceeded it. This is the most commonly upheld reason for confiscation, so check the cap before your first spin.

Is a no-deposit bonus ever worth it? As free entertainment with a small chance of a capped payout, yes. As a money-making method, no: at 40× wagering the expected cost of clearing usually exceeds the winnings being cleared.

Responsible gambling

Bonuses are marketing, and wagering requirements exist so that most bonus money is staked back. Set a budget before you play, treat any cleared bonus as luck, and never deposit to chase a requirement. Deposit limits, time-outs and self-exclusion are available at every casino we review, and free confidential help is available through your national problem-gambling helpline.