Withholding tax forms 20232024 current period ; IT2104E (Fillin) (2025), Instructions on form, Certificate of Exemption from Withholding. Mark an X in the box for the quarter and enter the last two digits of the year of the Form NYS-45 being amended.The employee must complete form K-4 and file it with the employer before withholding will be discontinued. If you do not return Form W9 to the requester with a TIN, you might be subject to backup withholding. See What is backup withholding? You must give Form NJ-W4 to your employees to fill out and return to you. This form tells you how to withhold tax from your employee's pay. Get IRS tax news and sign up for e-News updates. Find information on Form 1040, tax relief, regulations, deadlines, tax guidance and more. This is the easiest way to electronically fill out the forms and prevent losing any information that you've entered.