BMO Bank Customer Service: Phone, Chat and Branch Support

BMO Bank offers several ways to get help, and the right channel depends on how urgent the issue is. For a lost card or suspected fraud, the phone is the only option that matters. For a routine question about a fee or a statement discrepancy, secure messaging or live chat is usually faster and avoids the hold music. Branch visits remain the best choice for complex issues that need paperwork, signatures, or a face-to-face conversation with a banker who can pull up the full account history.

Contact Options

BMO Phone Support

The main BMO Bank customer service number, 1-888-340-2265, handles most personal banking questions. The automated system can check balances, transfer funds between BMO accounts, and report a lost card without ever connecting to a human. Live representatives are available during extended weekday and weekend hours, though exact times vary by department. Mortgage and business banking lines have separate numbers, which are listed on BMO's website under the respective product pages.

Live Chat BMO

Live chat appears on BMO's website during business hours and connects to a representative who can answer product questions, walk through online banking features, and help with basic troubleshooting. Secure messaging, available inside online banking and the mobile app, is better for account-specific questions because the message is tied to the customer's profile and does not require re-verifying identity. Response times for secure messages are typically one to two business days, so this channel is not suitable for urgent problems.

Booking a Branch Appointment

For anything that needs a banker's undivided attention — opening a business account, discussing a mortgage, sorting out a complex fee dispute — booking an appointment ahead of time is worth the effort. BMO's branch locator on bmo.com shows each location's regular hours and available appointment slots. Selecting a time reserves a dedicated banker, which usually means less waiting and more personalized service than a walk-in visit. Walk-ins are still accepted for simple transactions like deposits or basic balance questions.

Branch Hours

Most BMO branches open at 9 a.m. and close at 5 p.m. on weekdays. Saturday hours are shorter, typically ending around 1 p.m., though some locations open at 9 a.m. and others at 10 a.m. Branches are closed on Sundays and federal holidays. Drive-thru service is available at many locations for deposits and withdrawals that do not require speaking with a banker inside. Customers should check the specific branch before making a trip, especially around holiday weekends when hours sometimes shift.

Fraud Reporting and Card Issues

For lost or stolen cards, customers should call 1-888-340-2265 immediately. In the meantime, the mobile app allows instant card locking, which prevents new transactions while preserving the account. For suspected fraud — unauthorized charges, phishing emails, or suspicious login alerts — the same phone line connects to a fraud specialist who can review recent transactions, issue a replacement card, and file a dispute. BMO's digital banking guarantee covers unauthorized transactions reported promptly, provided the customer has not shared credentials or acted negligently.