How much comes back to your account at a given cashback rate.
Cashback is a partial refund of net losses over a period (usually a week or a month): the casino compensates part of the losses to keep the player around. The rate typically grows with VIP tier — from 5% for newcomers to 15–20% in top loyalty programs.
Unlike wager bonuses, cashback is usually credited with no playthrough or a minimal one — check the exact terms at a given casino before you count on it.