Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format.Sample Letter – Asking for a debt write-off when someone is 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. Learn how to write an inheritance sample letter to beneficiary with distribution details. Discover templates, examples, and a step-by-step guide. You'll need the person's Social Security number and certified copies of their death certificate for most agencies and programs. Social Security and Medicare. Learn how to write an inheritance sample letter to beneficiary with distribution details.