From Longman Business Dictionary
declarationdec·la·ra·tion /ˌdekləˈreɪʃən/ noun [countableC]1TAXa statement in which you officially give information, for example about your income or about goods you are importing, which is used to calculate how much tax you will pay → customs declaration → tax declaration2a statement in which you officially give information about yourselfThe lender requires you to make a declaration that your income is sufficient to meet your monthly payments.
4INSURANCE a statement made by someone who has taken out insurance, giving details of the goods insured to the insurance company