You will start paying your bond about a month after the bond is registered.

Which specific date of the month your account gets debited can be discussed between you and the bank. The bank should also contact you after the bond is registered to confirm the date of the first payment.

Bond registration usually takes about three months from the day your bond is granted. So three months for bond registration, plus another month until the first payment, means about four months from your bond being granted to the first payment. This gives you time to start setting money aside for the bond payments.