How to Fill Out Form W-9 as a Freelancer or Contractor

A new client emails you a blank Form W-9 and asks for it back before they'll cut your first check. It looks simple, but one wrong box, an old address, or a mismatched name and Taxpayer Identification Number (TIN) can hold up payment or trigger automatic tax withholding. Here's exactly what to put in each line, whether to use your SSN or an EIN, and how to get it filled, signed, and back to your client the same day.

Who Needs to Fill Out a W-9 (and Who Requests It)

Form W-9, Request for Taxpayer Identification Number and Certification, is how a business collects your name, address, and TIN before paying you. If you're a freelancer, independent contractor, consultant, or single-member LLC being paid outside of a regular payroll system, a client will typically ask for one before the first payment or before year-end, whichever comes first.

The business isn't sending this to the IRS. They're keeping it on file so they can correctly prepare your Form 1099-NEC at year-end. Starting with 2026 payments, businesses must collect a W-9 and issue a 1099-NEC once they've paid you $2,000 or more in a year, up from the $600 threshold that applied through 2025 under a change in the One Big Beautiful Bill Act signed July 4, 2025. That's a real shift: some clients who used to send you a 1099 for smaller amounts may not anymore, but you still owe tax on that income either way, so keep your own records regardless of whether a form arrives.

SSN or EIN: Which Should You Use

Part I of the form asks for one TIN, not both. Which one you enter depends on how you operate:

• Sole proprietor with no employees: Your Social Security number is fine, and it's what most solo freelancers use starting out.
• Sole proprietor who wants to keep an SSN private: You can apply for a free EIN from the IRS and use that instead. Plenty of freelancers do this specifically so they're not handing their Social Security number to every new client.
• Single-member LLC taxed as a disregarded entity: Use your own SSN or EIN, not a separate EIN for the LLC, unless the LLC has employees or you've elected corporate tax treatment. This trips people up constantly, since it feels like the LLC's EIN should go here, but the IRS wants the owner's number for a disregarded entity.
• LLC taxed as an S-corp, C-corp, or partnership: Use the entity's EIN.

Whichever number you use, it needs to match the name on line 1 exactly as the IRS has it on file. A mismatch is one of the most common reasons a W-9 gets bounced back or a payment ends up flagged for backup withholding.

Step by Step: Filling Out Each Line

Download the current Form W-9 (Rev. March 2024) from IRS.gov, then open it in a PDF form filler so you're typing directly into the fields instead of printing it out and writing by hand. Typed entries are legible and less likely to get sent back for clarification.

1. Line 1, Name. Enter your legal name exactly as it appears on your tax return. If you're a sole proprietor, that's your personal name, not your business name.
2. Line 2, Business name. Optional. Enter your DBA, trade name, or LLC name here if you have one separate from your personal name.
3. Line 3a, Federal tax classification. Check the box that matches how you're taxed: Individual/sole proprietor, LLC, C corporation, S corporation, partnership, or trust/estate. If you checked LLC, write the single-letter code (C, S, or P) for how the LLC is taxed, unless it's a disregarded entity, in which case check the box for the owner's classification instead.
4. Line 3b. This box only applies if you checked partnership or trust/estate, or LLC taxed as a partnership, and the entity has foreign partners, owners, or beneficiaries. Most solo US-based freelancers leave this blank.
5. Line 4, Exemptions. Almost never applies to individual freelancers or contractors. Leave both boxes blank unless you know you qualify for a specific exempt payee or FATCA exemption code.
6. Lines 5 and 6, Address. Enter the mailing address where you want tax documents like your 1099-NEC sent. Use an address you'll actually check in January and February.
7. Part I, Taxpayer Identification Number. Enter your SSN or EIN in the matching box based on the decision above. Double-check every digit against your Social Security card or IRS EIN confirmation letter before moving on.
8. Part II, Certification. Sign and date the form. Signing certifies that your TIN is correct, you're not subject to backup withholding, and you're a US person for tax purposes. Use an e-signature tool to add your signature directly to the PDF so you can email it back without printing, signing, and scanning.

If you'd rather start from a clean fillable copy instead of a flat scan, our Form W-9 template has the fields already mapped out.

Backup Withholding: What It Means for You

Backup withholding is the IRS's way of collecting tax up front when it can't verify a payee's information. If you refuse to provide a W-9, provide an incorrect TIN, or the IRS notifies a client that your TIN doesn't match their records, that client is required to withhold 24% of every payment they make to you and send it to the IRS instead of paying you in full.

You get that withheld amount back as a credit when you file your tax return, but it's a cash flow problem in the meantime, and it's entirely avoidable. Provide a correct, matching name and TIN, sign the certification honestly, and backup withholding simply doesn't apply. If a client tells you they've started withholding on your payments, the fix is almost always a corrected W-9 with an accurate TIN, not a dispute over the form itself.

Sending It Back Securely

A completed W-9 has your SSN or EIN on it, so treat it like any other sensitive document. A few practices worth following:

• Send it through a client portal, encrypted email attachment, or secure file-sharing link rather than pasting the number into a chat message or unencrypted email body.
• Password-protect the PDF if you're emailing it directly. Our password protection tool lets you add a password before sending, then you share the password separately by text or a different channel.
• Keep a signed copy for your own records so you can confirm exactly what you sent if a mismatch comes up later.
• Never send a W-9 to someone who reached out unprompted asking to 'verify your tax information.' Only send one to a client you're actually invoicing or being paid by.

If you're juggling W-9s for several clients, plus contracts, invoices, and signed agreements, a subscription PDF tool is overkill for how often most freelancers actually touch this paperwork. PDF Editify's One Week Plan is a flat $3 one-time payment that covers a full week of filling, signing, and exporting every document a new client relationship throws at you, and it expires on its own with nothing to remember to cancel.

Frequently Asked Questions

Do I need to fill out a new W-9 every year?

No, a W-9 doesn't expire on a schedule. A client keeps the one you send on file and only asks for a new one if your name, address, entity type, or TIN changes, or if their records show a mismatch.

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

The client is required to begin backup withholding at 24% on payments to you until they receive a valid W-9. You'll eventually get that money back as a credit on your tax return, but you lose access to it until then, so it's rarely worth the delay.

Can I use my LLC's EIN instead of my SSN on a W-9?

Only if the LLC isn't a disregarded entity, meaning it has elected to be taxed as an S-corp, C-corp, or partnership. A single-member LLC taxed as a disregarded entity should use the owner's SSN or personal EIN, not a separate EIN issued to the LLC itself.

Is it safe to email a completed W-9 to a client?

It's safer through a secure portal or encrypted attachment than a plain email, since the form contains your SSN or EIN. If you must email it directly, password-protect the PDF first and share the password through a separate channel like text message.

Why did my client ask for a W-9 even though I've been paid less than $2,000 this year?

Some clients collect a W-9 upfront for every contractor regardless of how much they expect to pay, so they're not scrambling to request one in December if your total crosses the 2026 $2,000 reporting threshold. It doesn't mean you'll definitely receive a 1099, just that they're prepared either way.