New York Facility Out of Business Attestation is a form of attestation required by the New York State Department of Taxation and Finance (DT). It is used to confirm that a business is no longer in operation in the state of New York. This attestation is typically required when a business has ceased operations, has been dissolved, has moved out of the state, or has changed its legal entity type. It is also used to declare that the business has no outstanding taxes or other liabilities to the state. The types of New York Facility Out of Business Attestation forms are: Form DTF-17.1 — Out-of-Business Attestation for Sole Proprietorships; Form DTF-17.2 — Out-of-Business Attestation for Partnerships; Form DTF-17.3 — Out-of-Business Attestation for Corporations; and Form DTF-17.4 — Out-of-Business Attestation for Limited Liability Companies.