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If your BMO card is not activated, purchases and ATM withdrawals will be declined even if your account is in good standing. The fastest way to confirm activation is to try a small purchase or check your BMO Online Banking, and if it is not active, you can activate it immediately online, by phone, or through the BMO mobile app.

▶ BMO Card Activate Here

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How to Check If Your BMO Card Is Activated

1

Try a small purchase

Attempt a small transaction at a store or online. A BMO card that is not activated will be declined with a message like “card not activated” or “authorization denied.”
2

Check BMO Online Banking

Sign in to BMO Online Banking and review your card details. If the card is active, it will show a normal status. A recently replaced or new card may appear with an activation notice.
3

Check the BMO mobile app

Open the BMO app, go to your account dashboard, and look for any alerts that say your card needs to be activated.

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Common Signs That Your BMO Card Is Not Activated

  • Your transaction is declined at a store or online merchant
  • An ATM says your card is not valid or not authorized
  • You receive an SMS or email reminder from BMO to activate your card
  • The card does not appear fully active in the BMO mobile app
Do not use your BMO card at a merchant before activation. Businesses may place a temporary authorization hold that can block funds, even if the transaction itself is declined. Always activate your card as soon as you receive it.

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What Can Delay Activation

Several situations can cause a delay between receiving your card and having it fully active:
  • You activated it but the system has not yet updated. In rare cases, activation can take a few minutes to an hour to fully propagate across BMO’s payment network.
  • You have not received a new PIN. Some BMO cards require a PIN to be set up before the card is considered fully active.
  • The card was lost in transit and you received a replacement. If the original card was reissued, the new card may have a different activation timeline.
  • You activated it by phone but have not fully completed prompts. Automated phone activation requires you to finish all steps, including confirming the last four digits or ZIP/postal code.

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How to Activate Your BMO Card Right Now

Most BMO cards can be activated in one of three ways. Choose the method that works best for you:
1

Activate online at bmo.com/activate

Go to https://www.bmo.com/activate, enter your full 16-digit card number, expiry date, and CVV, then follow the prompts to complete activation.
2

Activate in the BMO mobile app

Open the BMO app, sign in, tap your new card in the dashboard, and select Activate Card. Follow the on-screen steps to finish.
3

Activate by phone

Call the BMO card activation number. For credit cards: 1-877-225-5266. For debit and banking cards: 1-800-363-9992. Follow the automated prompts.
If you just activated your BMO card and a purchase is still being declined, wait 5-10 minutes and try again. If the issue persists after an hour, contact BMO customer service.