Content
Tax forms
Forms related to Tax that you can fill out and mail online entirely with PostalForm. No PDF filling required or printing required.
• Updated May 4, 2026
Available forms
5 forms
IRS Form 1099-NEC (Copy B)
Fill out the recipient copy of IRS Form 1099-NEC online and generate a mailable PDF for furnishing nonemployee compensation to a contractor or other payee.
IRS Form 1120
Fill out IRS Form 1120 online, generate the finished U.S. corporation income tax return PDF, and continue to mailing when you are ready.
IRS Form 5471
Fill out IRS Form 5471 online, generate the completed information return PDF, and include it with the mailing packet for the related tax return.
IRS Form 5472
Fill out IRS Form 5472 online, generate the completed related-party information return PDF, and include it with the correct tax return packet.
IRS Form 8822
Fill out IRS Form 8822 online and generate a mailable PDF for individual IRS address changes.
Why this topic matters
These tax workflows are for mailings where the form, supporting documents, and proof of sending need to stay together. PostalForm turns selected printable PDFs and packet workflows into guided online steps, then generates a reviewable PDF before mailing.
How it works
- Choose the workflow that matches the packet you need to send
- Answer the guided questions and upload attachments when needed
- Review the generated PDF before checkout
- PostalForm prints and mails the packet through USPS