Zip Canada's installment payments are set to be paid automatically on the due date.
Zip Canada will send Email reminders before your installments are due. You’ll have plenty of time to make sure you have enough funds to cover an upcoming installment. You will also be notified via Email if a payment has failed. Note, missing a payment could impact your ability to use Zip Canada again in the future.
You can also pay your installments early by following the steps here. Visit the Customer Portal to check your order or installment status, update your payment info, and make a payment.