How to Fill Out a W-9 Form Online
To fill out a W-9 online, enter your legal name, business name (if any), federal tax classification, address, and taxpayer identification number (SSN or EIN), then sign and date Part II. With DocFills, you can answer a few questions and let AI complete every field on the official W-9 PDF in under 20 seconds — free and no signup required.
What is Form W-9?
IRS Form W-9 (Request for Taxpayer Identification Number and Certification) is used by U.S. persons to provide their TIN to a business that will pay them and issue a Form 1099. Freelancers, independent contractors, and vendors are typically asked for a W-9 before their first payment.
The form is short — one page — but every field must be accurate. Errors can delay payments or cause incorrect 1099 reporting at year-end.
Who needs to complete a W-9?
You need a W-9 if you are a U.S. person (citizen or resident alien) receiving payments that may be reported on a 1099 — for example, freelance work, consulting, or vendor services. Businesses request W-9s; they do not file them with the IRS.
If you operate as a sole proprietor, use your SSN. If you have an LLC taxed as a corporation or partnership, use your EIN.
Step-by-step: fill W-9 online
1. Open the W-9 template on DocFills or upload a blank W-9 PDF.
2. Enter your legal name as shown on your tax return (Line 1).
3. Add your business name on Line 2 only if it differs from Line 1.
4. Select your federal tax classification on Line 3 (individual, LLC, corporation, etc.).
5. Enter your address on Lines 5–6.
6. Enter your SSN or EIN on Part I.
7. Sign and date Part II to certify the information is correct.
8. Download the completed PDF and send it to the requester.
Fill W-9 faster with AI
DocFills detects every field on the official W-9 PDF and maps your answers automatically. Answer a short questionnaire — name, address, tax classification, TIN — and download a completed form ready to send. No manual typing into tiny PDF boxes.