Large banner for contact us page Small banner for contact us page

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

Customer Complaint Resolution

  • Write to us

  • BMO Harris Bank Customer Advocacy Support and Escalation Team
    1200 E. Warrenville Road
    Naperville,IL 60563

BMO Harris Online Services

1-888-340-2265

For information regarding a mortgage application:

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

If you want information regarding your mortgage loan or you want to report an error relating to our servicing of your mortgage loan, you may contact us at the following toll-free number 1-888-340-2265 or in writing at the following address:

BMO Harris Bank N.A. – Loan Maintenance Dept.
P.O. Box 365
Arlington Heights, IL 60006

New products and services

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

Apply for a Credit Card

1-888-340-2265

BMO Harris Credit card Customer Service

Contact request form

Para hablar con un representante bancario en español haz click aquí

Report a Lost or Stolen Card

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



ATM/Debit Cards

Other Cards

Credit cards

  • Consumer Credit Cards with Chip (issued after January 25, 2016)

Servicemember's Civil Relief Act (SCRA)


Servicemember's Civil Relief Act (SCRA) - is a federal law that provides benefits and protections for military members as they enter active duty.

If you are an active duty member of the United States Military, you may be eligible for SCRA benefits and protections on the following products:

  • Line of credit, credit card, charge card, and installment loans
  • Mortgage and home equity secured loans

Note: Benefits and protections for servicemembers apply to both consumer and business loans.

To discuss eligibility and determine how BMO Harris Bank can help, please contact one of our SCRA Advocates at:

  • (262) 938-2668 or
  • (262) 814-5801.

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

Wealth Management Premium Rewards (issued after January 25, 2016)

Contact Small Business Banking


Small Business Banking Services:

BMO Harris Credit Card customer service:

  • Business Platinum MasterCard Credit Cards with chip (issued after January 25, 2016)
  • 1-855-825-9231

Apply for a Credit Card:

1-855-825-9231

Contact request form

Contact Commercial Banking


Commercial Banking Services

Click Here

Contact Investments


Already have a BMO Harris Financial Advisors account?

Interested in learning more about BMO Harris Financial Advisors?