IRS · Tax

Fill Form W-9 Online Free

Request for Taxpayer Identification Number and Certification

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What Is Form W-9?

Form W-9 is used by businesses to collect the taxpayer identification number (TIN) of freelancers, independent contractors, and vendors they pay. The information on this form is used to prepare Form 1099 at the end of the tax year. It is one of the most commonly filled forms in the United States.

Agency
IRS
Category
Tax
Form Number
Form W-9
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Who Needs Form W-9?

Freelancers and independent contractors asked by clients
Businesses hiring contractors or vendors
Banks and financial institutions opening new accounts
Real estate agents at closing
Anyone receiving non-employee compensation

How to Fill Out Form W-9 — Step by Step

1

Enter your full legal name as shown on your income tax return in Line 1.

2

If you have a business name or DBA that differs from your personal name, enter it in Line 2.

3

Select the appropriate federal tax classification: Individual/Sole proprietor, C Corporation, S Corporation, Partnership, Trust/estate, or LLC.

4

If you are exempt from backup withholding, enter your exempt payee code. Most individuals leave this blank.

5

Enter your address, including street, city, state, and ZIP code.

6

Optionally list the requester's name and address for your records.

7

Enter your Social Security Number (SSN) or Employer Identification Number (EIN) in Part I.

8

Read the certification in Part II, then sign and date the form.

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Common Mistakes to Avoid

Using a nickname instead of the legal name on your tax return
Selecting the wrong tax classification (e.g., choosing LLC without specifying the tax treatment letter)
Entering an SSN when an EIN is required for a business entity, or vice versa
Forgetting to sign and date the form — unsigned W-9s are invalid
Leaving the TIN blank, which triggers mandatory backup withholding at 24%

Frequently Asked Questions

Do I need to send a W-9 to the IRS?

No. You do not send the W-9 to the IRS. You give it to the business or person who requested it. They use the information to file a 1099 with the IRS at the end of the year.

What happens if I don't provide a W-9?

If you refuse to provide a W-9, the requester may be required to withhold 24% of your payments as backup withholding and send it to the IRS on your behalf.

Can I fill out a W-9 electronically?

Yes. The IRS accepts electronically signed W-9 forms. You can fill and sign the form using JustFill and send the completed PDF to the requester.

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