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Cardholder Resources

Everything you need to make the most of your card. Reference your card agreement, activate your card if you're using it for the first time, or find the phone numbers you need to connect with us when you need to speak with a BMO Harris Bank representative.



Access your online account

Manage your card 24/7 from the comfort of your home, office, or anywhere else you have internet access.

Login

Activate your card or add an authorized user

 

Once you've received your card, call us to activate it. Or if you would like to add an authorized user to an existing card or simply have a question, call us anytime – we're here to help.

Consumer Credit Cards

  • BMO Harris Bank Platinum Mastercard®
  • BMO Harris Bank Platinum Rewards Mastercard®
  • BMO Harris Bank Cash Back Mastercard®
  • 1-855-825-9237
  • BMO Harris Bank Premium Mastercard®
  • BMO Harris Premier Services Premium Rewards Mastercard®
  • 1-855-825-9238

 

 

 

Report your card lost or stolen

 

If your card has been lost or stolen, please call the appropriate number below immediately, to ensure your account is protected against fraudulent use.

Consumer Cards

  • BMO Harris Bank Platinum Mastercard®
  • BMO Harris Bank Platinum Rewards Mastercard®
  • BMO Harris Bank Cash Back Mastercard®
  • 1-855-825-9237
  • 1-262-780-8658
    (outside U.S.)

  • BMO Harris Bank Premium Rewards Mastercard®
  • BMO Harris Premier Services Premium Rewards Mastercard®
  • 1-855-825-9238
  • 1-262-780-8658
    (outside U.S.)

Business Platinum Mastercard® Credit Cards

Diners Club U.S. Cards


Terms & Agreements

Take a look at the benefit guides, terms, conditions and agreements for the consumer card you've chosen. If your card is not listed, or you have a BMO Harris Business Mastercard or BMO Wealth Management Mastercard, please visit bmoharris.com/legal.

 




Mastercard® is a registered trademark of Mastercard International Incorporated.

Apply Now

New Customer

 

If you’re not a BMO Harris Bank customer yet, there are three ways to apply for the card you want.

 

Existing Customer

 

If you’re already a BMO Harris Bank online banking customer, you can easily apply for your new credit card online.