Employer: complete this section only if you must send a copy of this form to the New York State Tax Department (see instructions). Employer name and address.To ask your employer to withhold an additional amount each pay period, complete lines 3, 4, and 5 on Form IT-2104, as applicable. In this article, we will break down what employees will need to fill out the form to make sure they are compliant with all state withholding requirements. Complete Form IT-2104 each year and file it with your employer if the number of allowances you may claim is different from federal Form W-4 or has changed. View and download IRS Tax Form IT2104E. Students who are New York State residents must complete this form if they qualify for an exemption. § 722.18 Marketing certificates and loan documents. (a). Use of marketing certificates.