The base rakeback percentage for level 0 players is 2% and increases with every 10 levels.
Through holding and/or staking $BBETS you can activate a permanent (as long as you're holding/staking your $BBETS) rakeback boost of up to 15%.
Rake = wager_amount * 0.75 * 2%
Rakeback = Rake * percent(starts at 2%)
HouseTotalRake = Rake - Rakeback
RewardAmount(daily/weekly/monthly) = HouseTotalRake * percent(9%/6%/4%)
The following table shows you the amount of $BBETS required to get a certain percentage of rakeback boost.
