If you lost your debit card in Canada, the first things to do are simple: block the card, report it to your bank, and look for any unauthorized transactions. If you need the background on how debit cards work or where online debit can be used, see what a debit card is in Canada.
The rest of this guide covers a lost or stolen debit card: blocking it, asking for a replacement, and when a temporary lock or temporary card number may be available. Other account problems, from frozen accounts to identity theft, are in the banking security hub.
1. Block the Card Immediately
Act in this order:
- Open your bank’s app and lock the card if that feature is available
- If the card is definitely lost or stolen, cancel it and request a replacement
- If you still think you may find it, use a temporary lock first
- If you cannot access the app, call the bank’s lost/stolen card line right away
Common app locations:
- RBC: My Cards → Lock Card
- TD: MyCards → Lock/Unlock
- BMO: Manage Cards → Lock Card
- Scotiabank: Card Management → Pause Card
- CIBC: Manage Cards → Lock Card
- Tangerine: Manage Cards → Freeze Card
- EQ Bank: Account Settings → Card Controls
If you can’t get into the app, call your bank’s lost or stolen card line. Each bank’s number and hours are on its customer service page: RBC, TD, BMO, Scotiabank, CIBC, National Bank, Desjardins, Tangerine, Simplii Financial, EQ Bank and KOHO, or any bank in the customer service directory. The number is also printed on the back of the card, which helps if you only lost track of it at home.
2. Check for Unauthorized Transactions
Right after blocking the card, check your account for unauthorized activity. If anything looks suspicious, it is a fraud problem as well as a lost card; banking fraud protection in Canada explains how card fraud works. Look for:
- Transactions you do not recognize
- Small test charges (fraudsters often make a small purchase first to verify a card works before making larger ones)
- Unexpected reductions in your balance
3. Report the Loss and Any Fraud
If you see transactions you did not make, report them to your bank at the same time you report the card lost or stolen. Ask your bank to open a dispute for each unauthorized transaction. If your wallet held ID such as a driver’s licence or SIN card as well, the extra steps are in what to do when your identity is stolen.
Your liability under Canadian banking rules:
Under the Canadian Bankers Association’s voluntary Code of Practice for Consumer Debit Card Services, if you:
- Report the loss promptly
- Did not contribute to the loss (no PIN written on the card, no PIN shared with others)
- Did not act with gross negligence
Then your bank is responsible for reversing unauthorized transactions that occurred after the card was lost (and in some cases, even shortly before you were aware of the loss).
Keep a record of:
- When you last used the card
- When you noticed it was missing
- The time and date you reported it to the bank
4. Request a Replacement Card
After cancelling the card, your bank will issue a replacement. Options depend on the bank:
Same-day replacement at a branch:
- RBC, TD, BMO, Scotiabank, and CIBC can issue replacement cards at most branches on the same visit
- Bring government-issued photo ID
Mailed replacement (5–10 business days):
- Online banks (Tangerine, Simplii, EQ Bank, KOHO) mail replacement cards only
- Ask for expedited delivery if available
Temporary card number:
- Some banks can provide a temporary virtual card number for online purchases while you wait for the physical replacement
- This is more common with online-only banks or cards used for debit-as-credit purchases
5. Update Automatic Payments
Your new debit card will have a new card number. If you have automatic payments linked to your debit card (which is less common than credit card autopay, but does happen with some subscriptions), update those accounts once the replacement arrives. If you are also thinking about moving your main banking relationship, how to close a bank account in Canada covers that process.
Common places to check:
- Streaming services
- Gym memberships
- Recurring donations
6. What Happens to Pre-Authorized Payments Linked to Your Account
Pre-authorized debits (PADs) linked to your bank account number and transit/institution number (not to the card number) are not affected by a new debit card. Your mortgage payment, utility bills, and insurance premiums linked to your account will continue uninterrupted.
Only payments tied to the physical card number itself (which is typical of online subscriptions using debit-as-credit) need to be updated.
7. Can Someone Use Your Lost Debit Card Without Your PIN?
In-person purchases: a standard inserted debit transaction in Canada requires a PIN, so someone who finds your card can’t complete one without it.
Contactless (tap) transactions: Many Canadian debit cards support contactless payments, and tap purchases below the card’s contactless limit don’t need a PIN. A finder could make tap purchases up to that limit until the card is locked or cancelled.
Online purchases: Debit card numbers can be used for online purchases at merchants that accept debit-as-credit (e.g., Visa Debit or Debit Mastercard). These do not require a PIN. With a Visa Debit or Debit Mastercard, online fraud is possible without your PIN, which is why locking or cancelling the card quickly matters.