Canadian Technical Help Desk (Bilingual) 
(For technical help - What is a technical issue?)
Monday to Friday, 7:30 a.m. - 7:30 p.m. (ET)
- Telephone: 289-305-5940
- Toll-Free: 1-800-565-6444
- Email: TPSCAD.HelpDesk@bmo.com
U.S. Technical Help Desk 
(For technical help)
Monday to Friday, 7 a.m. - 7 p.m. (CT)
- Telephone: 1-866-867-2173
- Email: TPSUS.HelpDesk@bmo.com
U.S Client Services
(For account changes)
Monday to Friday, 7 a.m - 6:00 p.m (CT)
- Telephone: 1-877-895-3278
- Email: TPSUS.Service@bmo.com
BMO Commercial Cards :
For information about Commercial Cards, including BMO Mastercard, please contact a Commercial Card representative.
To report a suspicious email or security concern:
If you suspect any suspicious activity, please contact us immediately:
- In Canada, email us at phishing@bmo.com.
- In the U.S., email us at phishing@bmo.com or call 1-888-340-2265.