Your payment is due as shown on the contract payment date. There is no grace period on your account. A late fee is assessed to your account after the tenth day. The best recommendation is to make sure your payment is on time every month.
If your payment is 30 or more days late, it may show up on your credit report as a late payment. The degree to which a late payment affects your credit score can depend on things like how many days past due the payment is, how recently you have been past due, and how frequently you have made late payments.