Currently, the only payment method for Credit Builder is pre-authorized debit (PAD) from your chequing account. Your payment will be automatically withdrawn on your scheduled bi-weekly payment date from the bank account you've linked to Credit Builder.
Note: Depending on when you joined, you may have been able to use a card as your payment method. Currently, Credit Builder only accepts Visa, Visa Debit, Mastercard, and Debit Mastercard.