An address proof letter is a formal document used to verify an individual's residential address. Typically issued by an employer, landlord, or financial institution, it includes the individual's name, current address, and the date of issuance. The letter often bears the organization's letterhead and may include additional details such as the duration of residence. It serves as official confirmation of the individual's address for purposes such as applying for loans, opening bank accounts, or verifying identity. The tone is professional and factual, ensuring clarity and accuracy.