Estimate the monthly reload Gamba will credit for your wager volume — before it lands. Operators never publish the formula, so treat the result as the centre of a ±40% range.
The model: bonus ≈ wager × house edge × tier share (5% at entry tiers to ~18% at the top), with a profit-period haircut. Enter your typical weekly or monthly volume and the calculator walks the tiers Gamba actually publishes — the same structured data that powers our bonus comparison, not a guess.
In our dataset Gamba's program is listed as Monthly Bonus, unlocked from Gold, with $50,000 lifetime wager, released via Monthly calendar reset.
| 30-day deposits | 30-day withdrawals | Net flow | Unique depositors |
|---|---|---|---|
| $395.2M | $229.5M | $165.7M | 70,438 |
From our own labelled hot-wallet collectors — the same flow data that powers Gamba's stats page, tracked since 2024-05-25. Reload generosity calibrates against volume like this.