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Contact
BMO Harris

For easy access to account information or to transfer funds from your BMO Harris account, call your BMO Harris Bank by PhoneSM automated service at
888-340-2265. Available 24 hours a day seven days a week.

Personal Banking

Account specific questions:

BMO Harris Online Services:

1-888-340-2265

Apply for a Credit Card:

1-855-622-6933

BMO Harris Credit Card customer service:

New products and services:

1-888-340-2265 (24 hours a day)

For information regarding a mortgage application:

1-888-482-3781 Mon - Fri 8 a.m. - 6 p.m. (CT)

Para hablar con un representante bancario en español haz click aquí

Contact request form

Report a Lost or Stolen Card

Please call the appropriate number below to report a lost or stolen card.

ATM/Debit Cards

1-888-340-2265

Credit cards

  • Diners Club US Cards
  • 1-800-2-DINERS (1-800-234-6377)

Other Cards

Wealth Management

BMO Private Bank:

Visit our website to arrange to speak with someone in your local office.




For BMO Private Bank Mastercard® Premier World Card

Contact Small Business Banking

Small Business Banking Services:

1-888-340-2265 (24 hours a day)


BMO Harris Credit Card customer service:

Apply for a Credit Card:

1-888-226-1066

Contact request form 

Contact Commercial Banking

Commercial Banking Services

Click Here

Contact Investments

Already have a BMO Harris Financial Advisors account?

1-877-225-3863 Mon - Fri (excl. holidays) 8 a.m. - 5 p.m. (CT)

Interested in learning more about BMO Harris Financial Advisors?

1-888-360-6394 Mon - Fri (excl. holidays) 8 a.m. - 5 p.m. (CT)