Direct Debit, also known as direct withdrawal, pre-authorized payment (PAP) or pre-authorized debit (PAD) is an automatic payment collection system which can be used for both regular and occasional payments.
In order to start using this service the account holder has to contact his/her bank to sign a Direct Debit Mandate form, which is the instruction that authorizes the creditor (i.e. the merchant from which your are buying good or services) to collect the payment from the customer’s bank account.
It is important to keep in mind that direct debit payments are not immediate, since the account holder must be informed prior to the commencement of the fund collection. Indeed, it takes as a minimum of three working days until the payment can be cleared.