180% USDT Casino Bonus: Calculate the Wagering Before Opting In

OSbet's 3rd Deposit Bonus is Stage 3 of the four-part deposit bonus series, unlocked once the wagering requirement on the 2nd Deposit Bonus is cleared. It matches a third deposit at 180%, with a minimum participation of 20 USDT or the equivalent in another supported coin.

It's only available to players who've completed Stage 2, on their third deposit — and same as the earlier stages, there's no time limit for when that deposit needs to happen once it's unlocked.

The maximum bonus climbs to 1,000 USDT, up from Stage 2's 850 USDT — a size that starts to matter if you're comparing this USDT casino's series against smaller single-stage matches elsewhere. Depositing and applying an amount moves both the deposit and the 180% bonus into the Activity Wallet, the same locked structure used throughout the series.

For example, applying a 100 USDT deposit adds a 180 USDT bonus, for 280 USDT total sitting in the Activity Wallet.

Stage 3's wagering requirement is 30x the combined participation amount and bonus, up from Stage 2's 28x. On that same 100 USDT deposit, the target works out to (100 + 180) × 30 = 8,400 USDT.

Each stage in the series raises both the bonus cap and the multiplier together, so it's worth running the math on your own deposit size before applying — bigger bonuses come with proportionally bigger wagering targets.

The rules on qualifying games haven't changed: only slots count toward wagering, PG Soft and JILI titles are excluded entirely, and live casino, table games, arcade games, fishing games and sportsbook bets don't contribute at all.

Meeting the 30x requirement releases up to 1,000 USDT from the Activity Wallet to the Cash Wallet, fully withdrawable with no forfeiture on the bonus itself once the requirement is met.

Clearing Stage 3 also unlocks the fourth and final stage of the series — a 300% bonus on a fourth deposit, the biggest match in the whole series.