Do You Need an EIN for a Single-Member LLC?

Strictly speaking, not every single-member LLC needs an Employer Identification Number. If you are a US owner, you have no employees and you haven’t chosen corporate tax treatment, the IRS lets you report the business under your own Social Security number.

In practice, most single-member LLCs get one anyway. Banks ask for it, payment platforms ask for it, and if the owner lives outside the United States, the company needs it to file its annual information return. Since the IRS doesn’t charge for it, the real question is usually when to apply, not whether.

What an EIN Is, and What It Isn’t

An EIN is a nine-digit number the IRS assigns to identify a business for federal tax purposes. It works for your company roughly the way a Social Security number works for you.

It is not the same as the document number the state gives your LLC when it approves your Articles of Organization. The state number proves the company exists. The EIN is how the IRS, banks and other institutions identify it for tax reporting. Two agencies, two numbers, two separate steps.

Note that “single-member” refers to ownership, not staff. An LLC with one owner and twelve employees is still a single-member LLC.

When the IRS Requires a Single-Member LLC to Have an EIN

Your LLC needs its own EIN if any of the following apply:

• It has employees, even one part-time worker. Payroll taxes are reported under the LLC’s EIN.
• It elects to be taxed as a C corporation or an S corporation.
• It has to file certain federal excise tax returns.
• It is owned by a non-US person. A foreign-owned single-member LLC must file Form 5472 with a pro forma Form 1120 each year, and it cannot file without an EIN.

If none of these apply, the LLC is a “disregarded entity” for federal income tax. Its profit and loss go on the owner’s personal return, usually on Schedule C. A freelance designer in Tampa with no staff and no tax election could legally operate without a separate EIN.

One detail catches many owners out. When a client asks your disregarded LLC for a Form W-9, the IRS instructions say to give the owner’s taxpayer number, not the LLC’s EIN, for income reporting. Having an EIN doesn’t change that.

Your Bank Will Probably Ask for One Regardless

Even when the IRS doesn’t require an EIN, most US banks won’t open a business account without one. They typically want to see the IRS confirmation letter (Notice CP 575) alongside your approved Articles of Organization and, often, your LLC Operating Agreement.

Make sure the company name on the EIN letter matches the approved formation documents exactly, including “LLC” or “Limited Liability Company.” A missing comma isn’t usually a problem; a different designator or a trading name in place of the legal name often is.

An EIN gets you through the door. It doesn’t guarantee approval, especially for international owners, because each bank runs its own checks. Our guide to the documents needed to open an LLC bank account covers the full list.

Apply After the LLC Is Approved, Not Before

Wait until the state has approved your LLC. The EIN application asks for the company’s legal name, formation state and start date, and those details should match the approved filing. If the state rejects your proposed name and you’ve already applied, you end up correcting IRS records for a company that never existed under that name.

When the EIN is issued, save the CP 575 letter as a PDF with your formation documents. The IRS does not reissue it. If you lose it, you can request a verification letter (Letter 147C), but that takes a phone call and some waiting, usually at the moment you need it most.

Also note that the IRS issues only one EIN per responsible party per day, regardless of how you apply.

How Much Does an EIN Cost?

Nothing. The IRS issues EINs free of charge. Be wary of websites designed to look like the IRS that charge a fee to “process” the application.

A formation service may charge for preparing and submitting the application for you. You are paying for the work and for getting the details right, not for the number itself. When you compare LLC packages, check whether EIN assistance is included or sold as an add-on.

How a Non-US Owner Gets an EIN

Foreign owners can get an EIN, but usually not through the IRS online application. That tool only works when the principal business location is in the United States or a US territory and the responsible party has a valid SSN or ITIN. Most international founders meet neither condition.

The alternative is Form SS-4, submitted by fax, by mail, or by phone through the IRS line for international applicants. Fax applications are generally processed within about four business days if you include a return fax number. Mail takes around four weeks. You do not need an ITIN to get an EIN through these routes.

The EIN is only the start. The Form 5472 filing mentioned above applies every year, even if the company had no sales, and the penalty for missing it starts at $25,000. Our article on forming a US LLC as a non-US resident covers what else to plan for.

Does Getting an EIN Change How Your LLC Is Taxed?

No. An EIN is an identification number, not a tax election. Your single-member LLC stays a disregarded entity unless you file Form 8832 to be taxed as a corporation or Form 2553 to elect S corporation status.

It also doesn’t replace anything else your business may need, such as a local business license, a sales tax registration or a state payroll account. Each of those is a separate application with a separate agency.