A death claim application letter for a bank is basically a letter to the bank stating that the account holder has been deceased. Do you know how to find out if you are a beneficiary on a bank account?This is to notify the bank that my. (Relationship with deceased). Use this letter when someone you know has died and they have left no assets or will behind. Contact us for advice before using this letter. Get the resources you need to help navigate someone else's financial affairs. Death records are also available from the local Registrar of Vital Statistics where the event occurred. Questions or comments? The death of someone close to you is difficult, and dealing with his or her finances can feel overwhelming.