Do I Need an EIN for My LLC?
Find out whether your LLC needs an Employer Identification Number (EIN), when it's required, when it's optional, and how to apply for one through the IRS.
Bizee Editorial Staff
Editorial Team
Introduction
It depends on your LLC's structure. Multi-member LLCs and any LLC with employees are required to have an Employer Identification Number (EIN). Single-member LLCs with no employees can skip it — but getting one anyway is worth it for banking, credit, and keeping your Social Security number off business documents.
What is an EIN?
An Employer Identification Number (EIN) is a 9-digit federal tax ID the IRS assigns to identify a business entity for tax purposes. It works like a Social Security number, but for your business — not for you personally. The IRS uses it to track tax filings, payroll, and other federal obligations tied to your LLC.
An EIN is not the same as an LLC. Your LLC is the legal entity you formed with the state. Your EIN is the tax identity the IRS assigns to that entity. You can have an LLC without an EIN in some situations, but you can't have an EIN without a legal entity or individual behind it.
When your LLC needs an EIN
Whether your LLC needs an EIN comes down to 4 situations the IRS has defined. If any of these apply to your business, an EIN is required — not optional.
- Your LLC has employees — any LLC that hires workers and withholds federal income, Social Security, or Medicare taxes needs an EIN to file employment tax returns
- Your LLC has more than 1 member — multi-member LLCs are treated as partnerships for federal tax purposes by default and must file Form 1065, which requires an EIN
- Your LLC elected to be taxed as a corporation — if you filed Form 8832 to be taxed as a C Corporation, or Form 2553 for S Corporation status, an EIN is required
- Your LLC has excise tax liability — businesses that sell or distribute fuel, alcohol, or other excise-taxable goods need an EIN to report and pay federal excise taxes
The single-member exception
A single-member LLC with no employees and no excise tax liability is treated as a disregarded entity by the IRS. That means the IRS doesn't recognize it as separate from you for tax purposes, and you can use your Social Security number on federal tax filings instead of an EIN. This is the one scenario where an EIN is technically not required.
That said, most single-member LLC owners get an EIN anyway. Using your Social Security number on business documents puts your personal number in front of vendors, banks, and contractors — and that's a privacy risk you don't need to take.
Why get an EIN even when it's not required
Even if your single-member LLC doesn't technically need an EIN, there are practical reasons to get one before you need it. Most banks require an EIN to open a business checking account in your LLC's name. Without a dedicated business account, you're mixing personal and business finances — and that can put your liability protection at risk if your LLC is ever challenged in court.
Plus, an EIN makes it easier to apply for business credit, work with vendors who need a tax ID on file, and hire contractors who'll need to report payments on a 1099. Getting an EIN now means you're not scrambling for one the moment your business grows.
- Open a business bank account in your LLC's name
- Apply for a business credit card or line of credit
- Hire employees or contractors without using your Social Security number
- Keep your personal tax ID off vendor and client paperwork
- Build a financial history under your business's identity
How to apply for an EIN
The IRS issues EINs for free. The fastest way to get one is through the IRS online application at irs.gov/ein — you'll get your EIN immediately after completing the form. The online tool is available Monday through Friday, 7 AM – 10 PM ET.
You can also apply by filing Form SS-4 by fax or mail, though those methods take longer. To complete the application, you'll need your LLC's legal name and address, the type of entity, the owner's name and tax ID, the number of LLC members, and the reason you're applying. Your EIN is active as soon as the IRS issues it — use it to open a business bank account, set up payroll, or file your first tax return.
FAQ
Yes, but they're separate things. Your LLC is the legal entity you form with the state. Your EIN is the federal tax ID the IRS assigns to that entity. You form the LLC first, then apply for an EIN. Some LLC types are required to have an EIN; others can operate without one, though getting an EIN is worth it for most business owners regardless.
It depends. A single-member LLC with no employees and no excise tax liability is not required to get an EIN — the IRS treats it as a disregarded entity and you can use your Social Security number instead. But a multi-member LLC with no employees still needs an EIN, because the IRS requires one to file the partnership tax return (Form 1065).
Generally, yes. Most banks require an EIN to open a business checking account in your LLC's name. A sole proprietor can sometimes open a business account with a Social Security number, but for an LLC — even a single-member one — banks typically ask for an EIN. It's one of the most practical reasons to get an EIN before you technically need one.
No. A Social Security number (SSN) identifies you as an individual. An EIN identifies your business as a separate entity for federal tax purposes. A single-member LLC that qualifies as a disregarded entity can use the owner's SSN on federal filings, but an EIN keeps your personal number off business documents — which is a meaningful privacy and security benefit.
Yes, but the IRS doesn't offer a public EIN directory. If you've lost your EIN, check your original IRS confirmation letter, a previously filed tax return, or any bank documents you used when opening a business account. If you can't find it through those, you can call the IRS Business and Specialty Tax Line at 800-829-4933 and they can confirm it after verifying your identity.
No. The IRS doesn't cancel EINs once they're assigned — the number stays on record permanently. If your LLC closes and you no longer need the EIN, you can write to the IRS to request that the account be closed. Send your request to the IRS Cincinnati campus with your business name, address, EIN, and the reason for closing the account. The EIN itself won't be reissued to another business.
Yes, in some cases. If your LLC changes its ownership structure — for example, converting from a single-member LLC to a multi-member LLC, or changing to a corporation — the IRS may require a new EIN. A simple name change or address update doesn't trigger a new EIN. If you're not sure whether your change requires a new one, the IRS EIN page has a full list of situations that do and don't require a new number.
Not on its own. The IRS assigns EINs to identify entities for tax purposes, and sole proprietors can get one without forming a legal entity. Having an EIN doesn't make your business a legally recognized entity — that requires forming an LLC or corporation with your state. An EIN is a tax ID, not proof of legal formation.
