Get Answers Support Tax Filings & Payments Other Forms Form 3921 What is Form 3921? When is the deadline for Form 3921? What are the requirements to file Form 3921? What is the Penalty for Failing to File Form 3921? What is the difference between Form 3921 and 3922? Who needs to file Form 3921? How to file Form 3921 from TaxBandits? How to mask the TINs in print copies of 3921 form? Need more help? Get in touch with our dedicated support team Contact Us (704) 684-4751 support@taxbandits.com Sign Up for a FREE TaxBandits Account! The Smart CPA Choice Register Now Already have an account? Sign in