N.Y. Comp. Codes R. & Regs. tit. 20, § 5000.5
(2) An offer in compromise based on doubt as to collectibility requires a showing that the taxpayer has been discharged in bankruptcy, is insolvent, or that collection in full would cause an individual taxpayer undue economic hardship. A statement of financial condition and other information (Form DTF-5) is required in all offer-in-compromise cases based on the taxpayer's inability to pay the total amount due or that full payment will cause undue economic hardship, regardless of the type of tax or amount of liability involved. The amount acceptable in compromise must reasonably reflect collection potential (reasonable collection potential) or otherwise be justified by proof offered by the taxpayer. Reasonable collection potential is based on the total realizable value of the taxpayer’s assets and the amount that could reasonably be expected to be collected from the taxpayer’s anticipated future income, after giving effect to all priorities granted to New York State and applicable statutes of limitations on collections.
(a) Filing.
An offer in compromise may only be made after the issuance to the taxpayer of a written notice of the Commissioner of Taxation and Finance advising the taxpayer of a tax deficiency, determination of tax due, assessment, or denial of a refund, credit or reimbursement application. The taxpayer shall file an offer in compromise as prescribed in the forms.
(b) Supporting documents.