How to Fill Out Form W-9 as a Freelancer or Single-Member LLC [2026]

The complete 2025 guide to filling out IRS Form W-9 correctly. Learn exactly what to put in each box, whether to use your SSN or EIN, and avoid the mistakes that trigger IRS backup withholding.

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Quick Summary: W-9 in 60 Seconds

Line 1: Your legal name (as shown on your tax return)
Line 2: Business name (if different from Line 1)
Line 3: Check "Individual/sole proprietor or single-member LLC"
Lines 5-6: Your address
Part I: Your SSN or EIN
Part II: Sign and date

What Is Form W-9 and Why Do Clients Ask for It?

If you're a freelancer, independent contractor, or single-member LLC owner, you'll frequently be asked to fill out IRS Form W-9. This form—officially called the "Request for Taxpayer Identification Number and Certification"—allows your clients to collect the information they need to report payments to the IRS.

When a client pays you $600 or more during the tax year, they're required to send you (and the IRS) a Form 1099-NEC. The W-9 provides them with your name and taxpayer identification number (TIN) to complete that 1099.

Important: Don't Skip or Delay If you don't provide a W-9 when requested, your client may be required to withhold 24% of your payments for "backup withholding" and send it to the IRS. Always provide your W-9 promptly to avoid this automatic withholding.

Freelancer vs. Single-Member LLC: Key Differences

Before diving into the form, let's clarify an important distinction. How you fill out your W-9 depends on your business structure:

Sole Proprietor / Freelancer

You operate as an individual without forming a separate legal entity.

Use your legal name on Line 1
Check "Individual/sole proprietor"
Use SSN or personal EIN

Single-Member LLC

You formed an LLC but you're the only owner (member).

Use your legal name on Line 1
LLC name on Line 2 (if different)
Check "Individual/sole proprietor or single-member LLC"

Why This Matters A single-member LLC is considered a "disregarded entity" by the IRS for tax purposes. This means the IRS treats it as if it doesn't exist separately from you—your business income flows directly to your personal tax return. That's why you check "Individual/sole proprietor or single-member LLC" and use your name (not just your LLC name) on Line 1.

Step-by-Step: Filling Out Your W-9

1. Line 1: Name

Enter your name exactly as it appears on your tax return. This is critical—a mismatch between your W-9 name and your tax records will trigger IRS notices.

Freelancer: "Jane M. Smith"
Single-Member LLC Owner: "Jane M. Smith" (your name, not your LLC name)

2. Line 2: Business Name (Optional)

If you operate under a business name that's different from your legal name, enter it here. This includes your LLC name or any "Doing Business As" (DBA) name.

Freelancer with DBA: "Smith Creative Services"
Single-Member LLC: "Smith Creative LLC"
No business name? Leave blank

3. Line 3: Federal Tax Classification

This is where many freelancers get confused. Here's exactly what to check:

✓ Check this box: "Individual/sole proprietor or single-member LLC"

This applies to both freelancers operating as sole proprietors AND single-member LLCs that haven't elected corporate tax treatment. The vast majority of freelancers and single-member LLC owners will check this box.

Exception: If your single-member LLC has elected to be taxed as a C-Corp or S-Corp, you would check "Limited liability company" and enter C or S in the tax classification box. This is uncommon for most freelancers.

4. Line 4: Exemptions (Usually Skip)

Most freelancers and single-member LLC owners can skip this line entirely. Exemption codes apply to specific situations like certain corporations or tax-exempt organizations. If you're unsure, leave it blank—it won't affect your form.

5. Lines 5-6: Address

Enter your street address, city, state, and ZIP code. Use the address where you want to receive tax documents (typically your home or business address).

Line 5: 123 Freelancer Lane, Suite 100
Line 6: Austin, TX 78701

6. Line 7: Account Number(s) (Optional)

This is only used if your client specifically requests it to track multiple accounts. Most freelancers leave this blank.

7. Part I: Taxpayer Identification Number (TIN)

Enter either your Social Security Number (SSN) or Employer Identification Number (EIN). Here's how to decide which to use:

Privacy Tip Many freelancers prefer using an EIN instead of their SSN for privacy. Your SSN appears on the W-9 you send to clients, and some may not handle it as securely as you'd like. You can apply for a free EIN at IRS.gov using Form SS-4.

8. Part II: Certification (Sign & Date)

Sign and date the form. By signing, you're certifying that:

The TIN you provided is correct
You're not subject to backup withholding (unless you've been notified otherwise)
You're a U.S. citizen or resident alien
The FATCA code (if any) is correct

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Common W-9 Mistakes to Avoid

Mistake #1: Using LLC Name Only on Line 1

For single-member LLCs, your legal name must appear on Line 1. Put your LLC name on Line 2. The IRS matches the TIN to the name on Line 1—using only your LLC name will cause a mismatch.

Mistake #2: Checking "Limited liability company" for a Standard SMLLC

If your single-member LLC hasn't elected corporate tax treatment, you should check "Individual/sole proprietor or single-member LLC"—NOT the LLC box. The LLC box is for multi-member LLCs or those with corporate elections.

Mistake #3: Name Doesn't Match Tax Records

Your name on the W-9 must exactly match your tax return. If you got married and changed your name but haven't updated it with the Social Security Administration, use your old name until you update SSA records.

Mistake #4: Forgetting to Sign

An unsigned W-9 is invalid. Don't forget to sign and date Part II. Electronic signatures are acceptable for most purposes.

After You Submit Your W-9

Once you've sent your W-9 to a client, here's what to expect:

Keep a Copy: Save a copy of every W-9 you submit. This helps if there are any disputes and makes it easy to send updated versions if your information changes.
Expect a 1099 at Year End: If the client pays you $600+ during the year, they'll send you a 1099-NEC by January 31st of the following year. Learn more about 1099 forms.
Create Paystubs for Your Records: Even as a freelancer, maintaining paystub records helps you track income, qualify for loans, and prepare for tax time.

Frequently Asked Questions

Should I use my SSN or EIN on my W-9 as a freelancer?

As a sole proprietor freelancer, you can use either your SSN or an EIN. However, many freelancers prefer using an EIN for privacy reasons—it keeps your SSN off documents that clients may share. If you have a single-member LLC, you can use your SSN, your personal EIN, or an EIN obtained specifically for your LLC.

What tax classification should I choose on a W-9 for my single-member LLC?

For a single-member LLC that hasn't elected corporate tax treatment, check the 'Limited liability company' box and enter 'C' for C corporation, 'S' for S corporation, or 'P' for partnership based on your election. If you haven't made any election (most common), the IRS treats your single-member LLC as a 'disregarded entity,' and you should check 'Individual/sole proprietor or single-member LLC' instead.

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

Yes, each client who will pay you $600 or more during the year will typically request a W-9. They need your taxpayer identification information to issue you a 1099 form at year end. Keep a completed W-9 template saved so you can quickly provide it to new clients.

What happens if I fill out my W-9 incorrectly?

If you provide incorrect information on a W-9, the IRS may flag a mismatch between the name/TIN on your 1099 and their records. This could lead to backup withholding (currently 24% of payments) being applied to your future payments from that client. You may also face penalties for providing false information.

Can I fill out a W-9 electronically?

Yes, you can fill out and sign a W-9 electronically. Many clients accept PDF versions with electronic signatures. Tools like MakePaystubPro's W-9 generator allow you to complete and download your W-9 instantly, ready to send to clients.

How long is a W-9 valid?

A W-9 doesn't technically expire—it remains valid until your information changes. However, some companies request updated W-9s periodically (often annually) as part of their compliance procedures. You should submit a new W-9 whenever your name, address, TIN, or tax classification changes.

What's the difference between W-9 and W-4?

A W-9 is for independent contractors and freelancers to provide their TIN to clients. A W-4 is for employees to tell their employer how much federal tax to withhold from their paycheck. If you're a freelancer, you'll fill out a W-9; if you're an employee, you'll fill out a W-4.

Do I need to include my LLC name on my W-9?

If your LLC has a different name than your legal name, enter your legal name on Line 1 and your LLC's business name on Line 2 (Business name/disregarded entity name). If you operate solely under your legal name, you can leave Line 2 blank.

Other Forms Freelancers Need

1099-NEC - Report contractor income
Paystubs - Income documentation
W-2 - If you have employees
Get an EIN - Protect your SSN

W-9 Form Instructions - Complete line-by-line instructions for IRS Form W-9.
Fill W-9 Online - Complete your W-9 form online and download instantly.
1099-NEC for Freelancers - Understand the 1099-NEC you'll receive from clients.
1099 Generator - Create 1099-NEC forms for contractor payments.
Paystubs for Self-Employed - Create income records for loan applications and taxes.
How to Apply for an EIN (SS-4) - Get an EIN to protect your SSN on W-9 forms.