EIN Application Guide: Costs, Steps & What to Expect

When you’re forming an LLC, the EIN application is one of the most important steps you’ll take — and one of the most misunderstood. Many entrepreneurs budget carefully for state filing fees and registered agent costs, then get tripped up by confusion around obtaining an Employer Identification Number. The good news: getting an EIN is free when you apply directly through the IRS. The frustration: knowing exactly when you need one, how to get it right the first time, and how it fits into the larger puzzle of LLC formation costs. This guide clears up all of it. (Related: Comparison of top LLC formation services with cost breakdowns and ROI analysis) (Related: Complete Guide to Tech Startup LLC Costs in 2026) (Related: Complete Guide to LLC Formation Costs for Food Truck Businesses in 2026)

What Is an EIN and Why Does Your LLC Need One?

An Employer Identification Number (EIN) is a nine-digit number assigned by the IRS to identify your business for federal tax purposes. Think of it as a Social Security Number for your LLC. Despite the word “employer” in the name, you need an EIN even if you have zero employees.

Here’s why your LLC almost certainly needs one:

• Opening a business bank account: Nearly every bank and credit union requires an EIN before they’ll open a dedicated business checking account for your LLC.
• Hiring employees: The moment you bring on staff, an EIN is legally required for payroll tax reporting.
• Filing certain tax returns: Multi-member LLCs are taxed as partnerships by default and must file Form 1065 — which requires an EIN.
• Applying for business licenses and permits: Many state and local agencies ask for your EIN on applications.
• Working with vendors and clients: Businesses that pay you more than $600 per year will request your EIN to issue a 1099 form.

Even if you’re a single-member LLC with no employees, getting an EIN is strongly recommended. It keeps your personal Social Security Number off vendor contracts and tax forms, which reduces your exposure to identity theft.

EIN Application: The Free IRS Method (Step by Step)

The IRS offers a completely free online EIN application through its website at irs.gov. This is the fastest and most reliable method. Here’s exactly how it works:

Step 1: Confirm Your LLC Is Already Formed

You must have a legally formed LLC before applying for an EIN. That means your Articles of Organization (sometimes called a Certificate of Formation) need to be filed and approved by your state. Don’t apply for an EIN before your LLC exists — the IRS may reject or invalidate the number if your entity isn’t yet established.

Step 2: Identify the Responsible Party

The IRS requires you to name a “responsible party” — the individual who owns or controls the entity. For a single-member LLC, that’s you. For a multi-member LLC, it’s typically one of the managing members. This person must have a valid Social Security Number or Individual Taxpayer Identification Number (ITIN). As of 2019, the IRS no longer allows another EIN to serve as the responsible party for most entity types.

Step 3: Complete the Online Application

Navigate to the IRS EIN online assistant and answer a series of questions about your business type, purpose, and structure. The application takes approximately 15 minutes if you have your information ready. You’ll be asked for:

• Your LLC’s legal name (exactly as it appears on your state filing)
• Your LLC’s mailing address
• The state where your LLC was formed
• The reason you’re applying (new business, banking purposes, etc.)
• Expected number of employees in the next 12 months
• The responsible party’s name and SSN or ITIN

Step 4: Receive Your EIN Immediately

Once you submit the application, the IRS issues your EIN instantly on screen. You can download and print the confirmation letter (Form CP 575) right away. Save this document — it’s your official proof of EIN assignment and you’ll need it to open bank accounts, apply for business credit, and handle other administrative tasks.

Important limitation: The online application is only available Monday through Friday, 7 a.m. to 10 p.m. Eastern Time. If you apply outside those hours, you’ll need to use the fax or mail method, which takes 4 business days (fax) or 4–5 weeks (mail).

What Does an EIN Actually Cost?

Applying directly through the IRS costs exactly $0. However, if you use a third-party formation service or legal platform, they often charge $50–$150 to handle the EIN application on your behalf. Some services bundle it into their LLC formation packages. That fee is for their time and convenience — not a government fee. If budget is a concern, there’s no reason to pay for EIN filing assistance when the IRS process is free and takes about 15 minutes.

How the EIN Fits Into Your Total LLC Formation Cost

Most entrepreneurs underestimate their total LLC startup costs because they focus only on the state filing fee. In reality, your formation budget should account for several line items:

• State filing fee: Ranges from $35 in Kentucky to $500 in Massachusetts
• Registered agent service: Typically $50–$300 per year if using a professional service
• Operating agreement drafting: Free if DIY, $100–$500 if attorney-drafted
• State publication requirements: Required in Arizona, Nebraska, and New York — New York’s can exceed $1,000
• Business licenses: Varies widely by state, city, and industry
• EIN application: Free through the IRS

Understanding these costs before you file prevents surprises that can stall your business launch. A $50 state fee can easily balloon to $600 or more once you factor in ongoing compliance costs.

Common EIN Application Mistakes to Avoid

• Applying before your LLC is approved: Wait for state confirmation first.
• Using a misspelled business name: Your EIN records must match your state filing exactly.
• Losing your CP 575 letter: Store it digitally and in a physical file immediately.
• Paying a third party unnecessarily: The IRS application is free — always start there.
• Applying for a new EIN after a name change: A name change alone doesn’t require a new EIN; a new entity type or ownership structure might.

Completing your EIN application correctly the first time saves you hours of correspondence with the IRS down the road. Treat it as a critical step in your formation checklist, not an afterthought.

Ready to understand your full LLC formation budget before you file? Use the free LLC cost calculator at llccostcalc.com to see exact state filing fees, registered agent costs, and compliance requirements for all 50 states — so you can launch your business without any financial surprises.

Related: EIN application guide and costs

Related: LLC formation costs by state

Related: LLC costs for creative agencies

Related: LLC formation service costs comparison

Related: LLC filing fees by state

Related: LLC cost by state

Related: LLC cost Hawaii guide

Related: LLC cost Hawaii

Related: LLC cost Minnesota filing fees

Related: FLSA exemption threshold payroll

Related: LLC vs nonprofit structure comparison

Related: LLC vs S-Corp tax costs

Related: master 10% revenue fee calculation

Related: lower seasonal business LLC costs

Related: calculate your 10% revenue fee

Related: calculate your 10% revenue fee

Related: how series LLCs work

Related: merge two llcs consolidation

Related: master 10% revenue fee calculation

Related: lower your amendment costs

Related: how series llcs work

Related: lower LLC formation costs North Carolina

Related: LLC taxes guide for owners

Related: LLC formation costs in Arizona

Related: franchise tax vs income tax

Related: business loan for your LLC

Related: Pennsylvania LLC cost breakdown

Related: seasonal business LLC costs

Related: summer business LLC costs

Related: complete 2024 pricing guide

Related: Pennsylvania LLC pricing guide

Related: BOI reporting requirements for LLCs

Related: how to pay yourself from an llc

Related: dissolve an LLC properly

Related: choose best state for LLC