W-9 form
Fill in the official IRS Form W-9 online and download it, ready to sign and send.
Form W-9, Request for Taxpayer Identification Number and Certification, is what a business asks you for before paying you as a contractor or vendor. Fill in the official IRS form here, sign it with Sign PDF, and send it to the business that requested it.
How to fill out a W-9
- The official blank W-9 opens automatically.
- Enter your name, business name, tax classification, address and your SSN or EIN.
- Download the PDF, sign it with Sign PDF, and send it to the requester (not the IRS).
Frequently asked questions
Who do I send my W-9 to?
To the business or person who asked for it. The W-9 is not filed with the IRS; the requester keeps it and uses your details to report what they paid you, for example on a 1099-NEC.
Is it safe to type my SSN here?
The form is filled inside your browser and nothing is uploaded or stored by ModifyPDF. Only send the finished W-9 to someone you trust, ideally through a secure channel rather than plain email.
Should I use my SSN or an EIN?
Individuals and single-member LLCs that are disregarded entities usually use their SSN (or the owner’s EIN if they have one). Corporations, partnerships and multi-member LLCs use their EIN. The IRS instructions on the form explain each case.
Do I need to sign the W-9?
Yes, Part II must be signed and dated. Download the filled form and use Sign PDF to add your signature and the date.
The official IRS form
This is the blank Form W-9 published by the IRS, so the person who requested it gets exactly the form they expect. Your answers go into the form’s own fields.
Your details stay private
Your name, address and Social Security or Employer Identification Number are typed into the form inside your browser. Nothing is uploaded to ModifyPDF or stored after you close the page.