How to Contact Bank of Montreal Customer Service?

Bank of Montreal customer service can be reached 24/7 to have your needs met. Contact them today using your preferred method from below to have your problems resolved to your satisfaction.

The Bank of Montreal is prepared to meet your customer service needs in several different ways. If you have general inquiries, then you are invited to call the general customer service number at 1 (877) 345-7777.

You may also contact BMO customer service through email at For French speaking account holders, contact BMO via email at

For account holders who speak Mandarin, you are invited to contact BMO at: 1 (800) 665-8800.

TTY account holders may also contact customer care at: 1 (866) 889-0889.

If you have specific questions about your credit card, then you will want to contact customer care at 1 (800) 363-9992. If your debt card has been stolen, contact BMO immediately at 1 (877) 225-5266.

If you require customer care regarding your Bank of Montreal MasterCard, then there are different toll-free numbers to use if you need to speak with someone in person.

  • 1 (800) 263-2263 is for all standard customer care needs.
  • 1 (866) 859-2089 is for TTY BMO MasterCard customers.
  • 1 (800) 361-3361 is used to report lost or stolen BMO MasterCards if in Canada or the US.

If you need BMO customer service and you are outside Canada or the US, then you are encouraged to call (514) 881-3845 to have your needs met.