If you are a BMO Harris credit card customer, you have several options to make your monthly card payment. You can pay:
- Online: Log in to your account and make your payment.
- By Mail: Send your payment to the following address: BMO Harris Credit Cards, P.O. Box 6012, Carol Stream, IL 60197
- By Phone: The BMO Harris credit card customer service phone number for payments is 855-825-9237.