Deciding between EIN vs SSN for freelancers trips up a lot of new self-employed workers, mostly because the honest answer is: for many freelancers, either works legally, but one is usually the smarter practical choice. Here’s exactly when you need an EIN, when your Social Security number is enough, and why getting an EIN is often worth it even when it isn’t required.
This article is for general informational purposes and isn’t legal or tax advice. Consult a licensed tax professional or attorney for guidance specific to your situation.
What’s the Difference?
- SSN (Social Security Number): Your personal federal identification number, used by default for tax reporting as a sole proprietor
- EIN (Employer Identification Number): A federal tax ID number for a business, issued free by the IRS, used to identify the business separately from you as an individual
As a sole proprietor with no employees, the IRS allows you to use either your SSN or an EIN for federal tax purposes — an EIN isn’t legally required unless specific conditions apply (covered below).
When You’re Legally Required to Have an EIN
You must get an EIN if you:
- Hire employees, even just one
- Operate as a partnership or corporation (rather than a sole proprietorship or single-member LLC taxed as a disregarded entity)
- File certain excise tax returns
- Have a Keogh plan (a specific type of retirement plan for self-employed workers)
- Withhold taxes on income paid to a non-resident alien
If none of these apply and you’re a sole proprietor or single-member LLC with no employees, an EIN is optional, not required.
Why Freelancers Get an EIN Anyway (Even When Not Required)
Even though it’s optional for many freelancers, getting an EIN is one of the most commonly recommended early steps, for several practical reasons:
1. Privacy Protection
Your SSN is one of the most sensitive pieces of personal information you have — used for identity verification, credit, and countless official purposes. Every time you fill out a Form W-9 for a client, without an EIN, you’re required to write your SSN on a document that gets emailed around, stored in accounting systems, and handled by people at the client’s company. An EIN lets you keep your SSN out of that process entirely, reducing your exposure if a client’s systems are ever breached.
2. Opening a Business Bank Account
Most banks require an EIN to open a dedicated business checking account, even for a sole proprietor. See our guide on the best business bank accounts for freelancers — nearly all the options covered there ask for an EIN during setup, regardless of whether you’re an LLC or a sole proprietor.
3. Applying for a Business Credit Card
While many issuers do accept an SSN for sole proprietor business card applications (see our guide on the best business credit cards for self-employed workers), having an EIN gives you the option to apply using it instead, further separating your business and personal financial identities.
4. Looking More Established to Clients
Some clients, particularly larger companies or those requiring a completed Form W-9, may view a business with an EIN as slightly more established than one using a personal SSN — though this is a minor factor compared to your actual track record and portfolio.
5. Preparing for Growth
If you anticipate hiring a contractor or employee, forming an LLC, or electing S-Corp status down the road, you’ll need an EIN at that point anyway. Getting one early, even before it’s strictly required, means one less step later.
How to Get an EIN (It’s Free)
Getting an EIN directly from the IRS is completely free and typically takes just a few minutes online:
- Go to the official IRS website (irs.gov) — be cautious of third-party sites that charge a fee for something the IRS provides at no cost
- Complete the online EIN application (Form SS-4 equivalent), available during specific hours on business days
- Answer questions about your business structure, name, and address
- Receive your EIN immediately upon completing the online application
There’s no cost, no waiting period for online applications, and no ongoing renewal requirement — an EIN doesn’t expire.
Do You Need an LLC to Get an EIN?
No. You can get an EIN as a sole proprietor, with no LLC or other formal business entity required. Many freelancers get an EIN well before (or instead of) forming an LLC, purely for the privacy and banking benefits described above. See our guide on sole proprietor vs LLC for freelancers if you’re also weighing that decision.
Using Your EIN on Form W-9
When a client sends you a Form W-9 to complete before paying you, you’ll be asked for either your SSN or an EIN in the “Taxpayer Identification Number” field. If you have an EIN, use it here instead of your SSN — this is exactly the situation the EIN protects you in, since W-9s are frequently emailed as unencrypted attachments and stored long-term in client accounting systems.
Does Getting an EIN Change Your Taxes?
No. For a sole proprietor or single-member LLC that hasn’t elected different tax treatment, getting an EIN is purely an identification change — you still file Schedule C on your personal tax return, and your business income is still taxed exactly the same way. The EIN doesn’t create any tax benefit or drawback by itself; it’s a separate identifier, not a different tax status. Real tax changes come from things like electing S-Corp status, which is a separate decision covered in our guide on S-Corp election for freelancers.
Can You Switch From SSN to EIN Later?
Yes, and many freelancers do exactly this once their business grows. If you’ve been using your SSN on client W-9 forms and bank accounts, you can:
- Get a free EIN from the IRS
- Update your Form W-9 on file with clients going forward (existing 1099s already issued won’t retroactively change, but future ones will use the new number)
- Add the EIN to your business bank account, if your bank supports updating it, or open a new account under the EIN if needed
- Use the EIN on any new business credit card applications
There’s no downside to making this switch whenever you’re ready — it’s a purely administrative update.
SSN vs EIN: Quick Decision Guide
Use your SSN if:
- You’re just starting out and want the absolute simplest setup with zero extra steps
- You’re comfortable with your SSN appearing on client-facing paperwork
- You don’t yet need a business bank account or business credit card
Get an EIN if:
- You want to keep your SSN off client W-9 forms for privacy
- You’re opening a business bank account (most require it)
- You’re planning to form an LLC or elect S-Corp status
- You anticipate hiring a contractor or employee
- You simply want your business to feel and operate more separately from your personal identity
The Bottom Line
For most freelancers, an EIN isn’t legally required, but it’s genuinely worth getting anyway: it’s free, takes a few minutes, protects your Social Security number from unnecessary exposure on client paperwork, and is required by most business bank accounts regardless of your business structure. There’s no tax difference either way for a typical sole proprietor, so this comes down to privacy and practicality rather than a financial decision — and since there’s no cost or downside, most freelancers find it’s worth getting one early rather than waiting until a bank or a growing business forces the issue.
This article is for general informational purposes and isn’t legal or tax advice. Consult a licensed tax professional or attorney, or visit IRS.gov directly, for guidance specific to your situation.