A Bitcoin casino offers you a 200 percent welcome bonus and your first instinct is to celebrate. Your second instinct should be to find one number: the wagering requirement. It is the single most important term attached to any bonus — the multiplier that decides whether that ‘free money’ is actually worth anything, or a mechanism designed to keep you playing until the house edge erases it.

This guide explains wagering requirements in plain arithmetic: what they are, where the multiple applies, the fine print surrounding them, and how to judge whether a bonus deserves your deposit.

A wagering requirement — also called playthrough or rollover — is the total amount you must wager before bonus money, and any winnings from it, can be withdrawn as real cash. It is expressed as a multiplier: a 35x requirement on a $100 bonus means you must place $3,500 in total wagers before a single dollar of that bonus becomes withdrawable.

The trap most players miss: that $3,500 is total volume wagered, not total losses. You can win and lose the same $200 seventeen times over and it all counts toward the total. But the house edge applies to every dollar of volume, so on a 96 percent RTP slot you would lose about $140 in expected value while clearing a $100 bonus — eating most of the ‘free’ money before it ever reaches your wallet.

Here is the detail that changes everything: is the multiplier applied to the bonus alone, or to the deposit plus the bonus? A 40x requirement on the bonus alone is half the turnover of the same 40x applied to deposit plus bonus.

Work through an example. You deposit 0.3 BTC and receive a 200 percent match — a 0.6 BTC bonus — with a 30x requirement on deposit plus bonus. Your wagering target is 30 times 0.9 BTC, which is 27 BTC of total turnover. The same 30x applied to the bonus alone would be just 18 BTC. Always check which base the multiplier hits before you compare two offers; a ‘30x’ headline can mean wildly different workloads.

The multiplier is only the headline — four surrounding rules decide how painful clearing it will be. Game contributions: slots usually count 100 percent toward wagering, while table games and live dealer bets often count only 5 to 20 percent, which is why bonus-focused players avoid them. Maximum bet limits: typically a few dollars per spin during wagering, and exceeding the limit even once can void your winnings. Maximum cashout caps: many bonuses — especially no-deposit offers and free spins — limit withdrawals to 5 to 10 times the bonus, so a huge balance can still pay out a fraction. And expiry windows: miss the deadline and the bonus plus its winnings disappear.

Note that free-spin winnings are usually converted into bonus money carrying their own requirement, often 35 to 50x. The exception worth seeking out is wager-free spins, where winnings arrive as cash with no playthrough — increasingly common at crypto casinos competing on transparency.

Run the arithmetic before you accept anything. Take the wagering target, estimate your expected loss clearing it at the games you will actually play, and compare that cost against the bonus amount. If a $100 bonus costs roughly $140 in expected playthrough to clear, it is not a gift — it is a discount on entertainment you were going to buy anyway, and sometimes not even that.

A few rules of thumb: prefer lower multipliers on the bonus alone over higher multipliers on deposit plus bonus; prefer wager-free spins over high-multiplier free spins; and never deposit more than you planned just to maximize a match percentage — the requirement scales with the bonus, so a bigger headline usually means a bigger workload. Read every bonus as a contract, not as extra money. The headline amount matters far less than the wagering terms attached to it, and that quick calculation before activation is the only point at which the numbers can save you. Gamble only what you can afford to lose.