This form must be permanently attached to each pay date check. Also, all wages received on a Form IT-2104 must be accompanied by a copy of this form that will be sent to the Employer. Form IT-2104 is filed with the New York County Department of State which then forwards the information to the Department of Labor. Form IT-2104, Employment Tax Return for New York State, and Form IT-2105, Employee's Withholding Allowance Certificate (New York State) are accepted with or without a completed New York State TIN on the first page of the return. For New York employees filing an income taxes return, Form IT-1911A (Employee's Withholding Allowance Certificate — New York) must be submitted. See New York State Employment Tax Return. Employee's Withholding Allowance Certificate. New York State. Please see IRS Form W-8, Employer's Withholding Allowance Form and IRS Form W-9c, Withholding Tax Certificate and New York State tax form. New York State Tax Return. See IRS Form W-8 (Employer's Withholding Allowance) and IRS Form W-9c (Withholding Tax Certificate). Form W-9. New York State. See IRS Form W-9 Form SSA-1099, Retirement Savings Plan Distributions. Form SEP-1, Supplemental Unemployment Trust Fund (Unexventiated) Distribution from Qualified Plans. Form 1099-Q, Tax Returns: General. ▷ Go to for the most current information. Taxpayer's Identification Number (or taxpayer's taxpayer identification number). This is the taxpayer's taxpayer identification number; is issued to every citizen and resident and includes the individual's name, address and a unique taxpayer identifier. When filed properly this number is used to complete a tax return for an individual. Form 1098-T. The 1098-T is used whenever the taxpayer fails to file a tax return due to tax issues and the tax due is more than 1,000.00. Taxpayer Identification Number. The taxpayer identification number is used, when requested by a New York State taxpayer, to verify the taxpayer identity and taxpayer eligibility by verifying the taxpayer's tax filing status, income tax filing status or employment status.