To,
The Manager,
________ (Bank Name),
________ (Address)

Date: __/__/____ (Date)

Subject: Request for add-on card

Respected Sir/Madam,

This is to inform you that my name is _________ (Name) and I do hold a credit card from your bank bearing credit card number ________ (Credit card number).

I am writing this letter to request you for providing me with an add-on card for the above-said credit account. The add-on card will be required in the name of _________ (details on the card). I hereby authorize the bank to deduct any applicable charges from my account in regard to the requested service and proceed with the required formalities.

I shall be highly obliged for your kind support. For any queries, you may contact me at __________ (Contact Number).

Thanking You,

__________ (Signature),
__________ (Name),
__________ (Address)