Paper employer withholding and school district withholding forms are no longer available. Electronic filing has been mandatory since 2015.All employer withholding returns and payments are required to be made electronically. Complete listing of all Court Forms ; Addendum Withholding Notice to Parties to a Support Order - Rev. Use Form I9 to verify the identity and employment authorization of individuals hired for employment in the United States. Use these instructions and the April 2024 revision of Form 941-X for all years for which the period of limitations on corrections hasn't expired. Local Forms: All Offices, Automatic Stay, Certificate of Service, Corporate Ownership Statement, ECF Registration, Petition Preparer Redaction. This is a free service provided to notify you via email when any document is filed on your business record. Purpose. Complete Form W-4 so that your employer can withhold the correct federal income tax from your pay. The actual amount of Massachusetts tax withheld from an employee's wages in a calendar year should appear on the employee's annual Form W-2.