The withdrawal period is the time between a sale's approval and the moment the corresponding amount becomes available for the seller to withdraw. This period is commonly expressed as D+n, where D is the day of the sale and n is the number of calendar days until release, such as D+3 or D+15.

Longer withdrawal periods dam up working capital: the sale's money has already happened, but it can't be reinvested in ads or operations until it's released, which directly affects the cash flow of anyone selling every day.