Deduction time periods are the dates over which a deduction is effective. All deductions have a start date and an end date. The start date indicates the date the deduction is scheduled to commence on the case. The end date is the date on which the deduction is due to end. The start date of a deduction cannot be later than the case expected end date for the related benefit case. For example, if the expected end date on the related benefit case was May 23rd, a deduction cannot start on May 24th. The benefit case is due to be closed on this date and thus, no payment and no deductions can be made from that payment.