Key Takeaways for 2026 Compliance
- Freelancers, sole proprietors, and single-member LLCs are legally permitted to use their SSN (or ITIN) on Form W-9.
- Under Treasury Regulation § 301.6109-1, an EIN is only required if you hire employees, establish a qualified retirement plan, or operate as a corporation/partnership.
- Single-member LLCs (disregarded entities) must enter the owner's name on Line 1 and use the owner's SSN or owner EIN — the IRS explicitly forbids entering the LLC's EIN.
- Getting a free sole proprietorship EIN online from IRS.gov takes 5 minutes and shields your personal SSN from client accounting databases.
- If your TIN application is currently pending with the IRS, you can write "Applied For" in the TIN box to avoid immediate backup withholding.
Quick Answer: What if I don't have an EIN?
- You can use your SSN or ITIN: If you are a solo freelancer, sole proprietor, or single-member LLC, federal tax law authorizes you to use your Social Security Number (or ITIN if you are a resident alien) on Form W-9.
- Check the right box on Line 3a: Check "Individual/sole proprietor or single-member LLC" on Line 3a (leave Line 3b blank).
- Warning for Single-Member LLCs: Never enter the LLC's EIN on Form W-9; under Treas. Reg. § 301.6109-1(h)(2)(i), you must enter the owner's personal SSN or individual owner EIN.
- Get an EIN later for privacy: If you want to protect your personal SSN from clients, you can apply for a free sole proprietor EIN from the IRS online in 5 minutes and use that instead.
Getting asked for a W-9 can be intimidating, especially if it's your first time working as a freelancer or independent contractor. One of the most common questions is: "What do I do if I don't have an EIN?"The good news? You almost certainly don't need one.
The Short Answer: Use Your SSN or ITIN
If you are a freelancer, sole proprietor, or single-member LLC, you are generally not required to have an Employer Identification Number (EIN). Instead, the IRS allows you to use your Social Security Number (SSN) as your Taxpayer Identification Number (TIN) on Form W-9.
If you are a resident alien or foreign national working as an independent contractor in the U.S. who does not have and is not eligible for an SSN, federal law authorizes you to use your 9-digit IRS Individual Taxpayer Identification Number (ITIN) in the SSN field under 26 CFR § 301.6109-1(d)(3).
Who Needs an EIN vs Who Doesn't
| Situation | EIN Required? | Can Use SSN? |
|---|---|---|
| Solo freelancer (no employees) | No | Yes |
| Sole proprietor | No | Yes |
| Single-member LLC (no employees, disregarded entity) | No (Optional) | Yes (Must use owner SSN; prohibited from using LLC EIN) |
| Freelancer with Solo 401(k) / Keogh Plan | Yes (for retirement plan trust) | No (plan trust requires separate EIN) |
| Any business with employees | Yes | No |
| Multi-member LLC | Yes | No |
| Corporation (C-Corp or S-Corp) | Yes | No |
How to Fill Out the W-9 with Your SSN or ITIN
When filling out Form W-9 without an EIN, follow these official IRS instructions:
- Line 1 (Name): Enter your full legal name exactly as it appears on your tax return. If you own a single-member LLC, you must enter your personal name here, NOT the LLC name.
- Line 2 (Business Name): Enter your registered DBA or single-member LLC name. Leave blank if you operate solely under your personal name.
- Line 3a (Federal Tax Classification): Check "Individual/sole proprietor or single-member LLC." (Do NOT check "LLC" if you are a disregarded single-member LLC).
- Line 3b: Leave blank (this checkbox is strictly for pass-through entities with foreign partners subject to IRC § 1446 withholding).
- Part I (TIN): Enter your 9-digit SSN (or ITIN) in the Social Security Number box. Leave the Employer Identification Number box blank. If you have recently applied for a TIN and have not yet received it, write "Applied For" under Treas. Reg. § 31.3406(g)-3.
- Part II (Certification): Sign and date certifying under penalties of perjury that your TIN is correct and you are not subject to backup withholding.
For a complete walkthrough of every field, see our step-by-step W-9 guide.
Should You Get an EIN Anyway?
While your SSN works perfectly fine, there are compelling reasons to get an EIN even if you're not required to:
- Privacy: Every client you send a W-9 to sees your SSN. With multiple clients, that's multiple copies of your SSN floating around in filing cabinets and email servers.
- Identity theft protection: If any client's records are breached, your SSN could be exposed. An EIN is not linked to your personal credit.
- Professionalism: An EIN signals to clients that you're running a legitimate business.
- Banking: Many banks require (or prefer) an EIN to open a business checking account, which helps separate personal and business finances.
- Future-proofing: If you ever hire employees, form a partnership, or elect corporate tax status, you'll need an EIN anyway.
How to Get a Free EIN (5 Minutes)
If you decide to get an EIN, the process is free and fast:
- Go to irs.gov and search for "Apply for an EIN Online."
- Click the "Apply Online Now" button.
- Answer a series of questions about your business structure. Important: If you are a freelancer or contractor applying to protect your personal SSN on Form W-9, select "Sole Proprietor". (If you own a single-member LLC and select "LLC", the IRS will issue an EIN to the LLC entity, which cannot be used on Form W-9 for trade payments under Treas. Reg. § 301.6109-1(h)(2)(i)).
- Provide your SSN for verification (this is a one-time IRS verification, not stored publicly).
- Receive your EIN instantly at the end of the application.
- Download and save the confirmation letter (CP-575) for your records.
Switching from SSN to EIN on Your W-9
If you get an EIN after you've already submitted W-9s with your SSN, you should:
- Fill out a new W-9 with your EIN in the TIN section.
- Send the updated W-9 to all active clients.
- Ask them to replace your old W-9 in their records.
- The new EIN will be used on future 1099s issued to you.
Note: Your old 1099s with your SSN are still valid for prior tax years. The switch only affects future reporting.
Frequently Asked Questions
Will my client care if I use an SSN instead of an EIN?
No. Clients accept both. The W-9 has fields for both SSN and EIN — you simply fill in whichever applies. There is no preference or penalty for using one over the other.
Can the IRS reject a W-9 with an SSN?
No. The IRS specifically authorizes sole proprietors and single-member LLCs to use their SSN. In fact, for a disregarded single-member LLC, the IRS requires the owner's personal SSN (or owner's individual sole proprietor EIN) and strictly prohibits entering the LLC's EIN under Treas. Reg. § 301.6109-1(h)(2)(i).
What if I do not have an SSN or an EIN? Can I use an ITIN?
Yes. Under IRC § 6109 and Form W-9 Instructions, resident aliens and foreign national independent contractors without an SSN and ineligible for one can enter their 9-digit IRS Individual Taxpayer Identification Number (ITIN) directly into the Social Security Number box on Form W-9.
I got an EIN but lost the confirmation letter — what do I do?
Call the IRS Business & Specialty Tax Line at 1-800-829-4933. They can look up your EIN after verifying your identity. You can also find your EIN on previously filed tax returns or any IRS correspondence.
Can I use someone else's EIN on my W-9?
Absolutely not. Using an EIN that doesn't belong to you on a W-9 is tax fraud and can result in severe IRS penalties and criminal charges.
Stop Worrying About Tax Forms
Our guided wizard detects your tax classification and tells you exactly what to fill in — SSN or EIN. Generate a perfect, IRS-compliant W-9 in 2 minutes.
Fill Your W-9 Now →Frequently Asked Questions
Will my client care if I use an SSN instead of an EIN?
No. Clients accept both. The W-9 has fields for both SSN and EIN — you simply fill in whichever applies. There is no preference or penalty for using one over the other.
Can the IRS reject a W-9 with an SSN?
No. The IRS specifically authorizes sole proprietors and single-member LLCs to use their SSN. In fact, for a disregarded single-member LLC, the IRS requires the owner's personal SSN (or owner's individual EIN) and strictly prohibits entering the LLC's EIN under Treas. Reg. § 301.6109-1(h)(2)(i).
What if I do not have an SSN or an EIN? Can I use an ITIN?
Yes. Under IRC § 6109 and Form W-9 Instructions, resident aliens and foreign national independent contractors without an SSN and ineligible for one can enter their 9-digit IRS Individual Taxpayer Identification Number (ITIN) directly into the Social Security Number box on Form W-9.
I got an EIN but lost the confirmation letter — what do I do?
Call the IRS Business & Specialty Tax Line at 1-800-829-4933. They can look up your EIN after verifying your identity. You can also find your EIN on previously filed tax returns.
Can I use someone else's EIN on my W-9?
Absolutely not. Using an EIN that doesn't belong to you on a W-9 is tax fraud and can result in severe IRS penalties and criminal charges.
- IRS.gov: Form W-9 (Rev. March 2024) – Request for Taxpayer Identification Number and Certification (OMB No. 1545-0029).Official Source ↗
- Internal Revenue Code: 26 U.S. Code § 3406 — Mandatory 24% Backup Withholding on Reportable Payments (26 U.S.C. § 3406).Official Source ↗
- Treasury Regulations: 26 CFR § 31.3406(h)-3 — Certificates of Taxpayer Identification Number and Signature Verification (Treas. Reg. § 31.3406(h)-3).Official Source ↗
- IRS Publication 1281: Backup Withholding for Missing and Incorrect Name/TIN(s) (Payers Guide) (IRS Pub. 1281 (Rev. 2026)).Official Source ↗