Application to block a lost ATM card

Use this to confirm in writing that your lost or stolen ATM or debit card should be blocked. Block it by phone or app first; give this letter to the branch afterwards.

Tap a yellow blank and type your own details. What you type stays in your browser only.

To The Branch Manager, [Bank Name], [Branch Name] Date: [Date] Subject: Request to block my lost ATM / debit card Respected Sir/Madam, I hold a savings account, number [Account Number], in your branch. My ATM / debit card for this account was [lost/stolen] on [Date of Loss] at [Place of Loss]. I request you to block the card at once so that no one can misuse it. The last four digits of the card are [Last Four Digits]. I did not make any transaction after [Time of Last Transaction You Made]. Kindly also issue a new card for my account. Thanking you, Yours faithfully, [Your Name] Account No.: [Account Number] Mobile: [Mobile Number] Signature: ____________

When to use this letter

This letter is the written follow-up after you have already blocked a lost or stolen card by phone, app, SMS or net banking. It puts the time of loss and your request on record at the branch, which matters if a wrong transaction appears later. It can also carry your request for a replacement card.

Before you send it

Speed matters more than paper. Call the bank's helpline or use the app to block the card the moment you notice the loss, then note the request number.
Check your recent transactions. If you see one you did not make, report it to the bank in writing the same day.
Write only the last four digits of the card. Never the full number or the PIN.

How to send or submit it

Hand it in at the branch as soon as you can and get a dated receiving stamp on your copy. Write on it the reference number you were given when you blocked the card. Keep that copy until the new card arrives and your statement has been checked.

Mistakes that get it sent back

Written days after the loss, with no earlier phone or app request.
No date and time of when you noticed the loss.
The card is identified by nothing, or by its full number. The last four digits are right.
An unauthorised transaction was noticed but not reported in the same letter.

Common questions

Should I also tell the police?

For a stolen card or a wrong transaction, yes. A report helps your claim with the bank. For cyber fraud in India you can also report on the national cybercrime helpline 1930 or at cybercrime.gov.in.

This is a general format, written by us, to save you time. If the bank has its own printed form, use that form. Last checked: 11 November 2026.

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