BMO Overdraft Protection: Limits, Rates & Application

Avoid NSF fees with BMO overdraft protection limits and plans.

Olesya Krasavtseva
Fact-checked by Olesya Krasavtseva
Content Editor at Prostobank Consulting Prostobank Consulting Logo
Updated: 01.10.2026
Table of Contents

Running out of funds before your next payday can result in expensive declined transaction fees and missed payments. Bank of Montreal (BMO) overdraft protection acts as a financial safety net for your chequing account, allowing you to temporarily borrow money up to an approved limit when your balance drops below zero. This prevents your everyday purchases, pre-authorized bills, or cheques from bouncing.

Without overdraft protection, BMO typically charges a steep $48 Non-Sufficient Funds (NSF) fee for every declined transaction. By applying for overdraft coverage, you only pay a nominal monthly or pay-per-use fee, plus a standard interest rate on the exact amount you borrow. Understanding the specific limits, rates, and application steps can help you manage your cash flow more effectively.

Category Details
Interest Rate 21% per year on the overdrawn balance.
Coverage Limits Typically ranges from $250 to $2,500 (O.A.C.).
Standard Plan Fee $5 per month (covers unlimited overdraft transactions).
Occasional Plan Fee $5 per use (maximum $5 per business day) instead of a monthly fee.

Step-by-Step Guide to Applying for BMO Overdraft

  • Log In Securely: Sign in to BMO Online Banking on a desktop browser using your Client ID and password.
  • Select Your Account: Navigate to the My Accounts summary page and click on the primary Chequing account you wish to protect.
  • Find the Application: Look for the Bank Services menu or scroll down to the account features section and select Apply for Overdraft Protection.
  • Choose Your Plan: Select either the $5/month Standard plan or the $5/use Occasional plan based on your banking habits.
  • Submit Details: Verify your income and employment information. Agree to the terms and click Submit to initiate the credit check and finalize your limit approval.

Pro-Tip: If you maintain a premium banking package, such as the BMO Premium Plan, the $5 monthly overdraft protection fee is entirely waived. You will still be responsible for the 21% interest on any overdrawn funds, but the administrative fee drops to zero.

Troubleshooting Application Pain Points

  • MFA Verification Fails: During the application, BMO will require Multi-Factor Authentication (MFA) to finalize the credit agreement. If the SMS text does not arrive, ensure your phone is not blocking short-code messages, or opt to receive the code via your registered email instead.
  • Browser Errors on Submission: If the application page times out or spins endlessly after clicking submit, disable your pop-up blockers and VPN. BMO's credit processing portal requires a stable, localized connection to authenticate the application.
  • Locked ID During Credit Check: If you take too long to complete the income verification section, the system may log you out for security. If multiple failed login attempts lock your ID, you must call 1-877-225-5266 to reset your profile before you can reapply.

Efficiency Hack for Managing Overdrafts

The best way to minimize overdraft interest is to know exactly when your account hits zero. Do not wait for a monthly statement. Immediately navigate to the Preferences tab in the BMO Mobile App and set up BMO Alerts. Configure a push notification to alert you the second your balance drops below $50. This gives you time to instantly e-Transfer funds from another institution or move money from a savings account to clear the negative balance before the 21% daily interest calculation begins.

Frequently Asked Questions

What is the BMO overdraft interest rate?

BMO charges an annual interest rate of 21% on overdrawn balances. This interest is calculated daily on your negative balance and charged to your account on the last business day of the month.

Does applying for overdraft protection affect my credit score?

Yes. Because overdraft protection is a form of credit, BMO will perform a "hard" credit inquiry when you apply, which may temporarily cause a slight dip in your credit score.

Can I cancel my BMO overdraft protection online?

While you can easily apply online, cancelling or reducing your overdraft limit generally requires you to call BMO customer service or visit a local branch so a representative can officially remove the credit facility from your account profile.

Official Bank Information

Bank Of Montreal

Support: 877-225-5266

SWIFT Code: BOFMCAM2

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