IRS EIN: What It Is, Who Needs It, and How to Apply in 2026

If you are starting a business in the United States, understanding the IRS EIN process is an important step toward managing your business taxes. An Employer Identification Number (EIN) is a federal tax identification number issued by the Internal Revenue Service (IRS). It helps identify businesses and certain organizations for tax reporting and other official purposes.

The good news is that applying for an IRS EIN is free when you apply directly through the official IRS website. Depending on your location and eligibility, you may be able to receive your number online immediately after approval. This guide explains what an EIN is, who needs one, how to apply, and what business owners should know before submitting an application.

What Is an IRS EIN?

An IRS EIN, also known as an Employer Identification Number, is a unique nine-digit number assigned by the IRS to identify a business or other eligible entity. It follows a format such as 12-3456789 and is used for federal tax administration. Although the name includes the word “Employer,” some businesses and organizations need an EIN even if they do not have employees.

Businesses commonly use an EIN when filing tax returns, reporting employment taxes, and completing certain banking or licensing requirements. It serves as a federal tax identifier for an eligible business entity, but it does not replace the owner’s personal Social Security number when an individual identification number is specifically required.

Who Needs an IRS EIN?

Not every business owner has the same EIN requirements. The need for an IRS EIN depends on the business structure, tax obligations, employees, and other circumstances. Understanding these requirements before applying can help you avoid unnecessary paperwork.

You generally need an EIN if you:

• Hire employees and must report employment taxes.
• Operate a partnership or corporation.
• Run an LLC that requires an EIN under applicable federal tax rules.
• Have certain employment, excise, or other federal tax obligations.
• Operate an eligible trust, estate, tax-exempt organization, or retirement plan.

Some sole proprietors without employees may not need an EIN for federal tax purposes. However, they may still choose to obtain one for business banking or other legitimate business needs. Check the official IRS guidance to determine whether your particular business requires a number.

How to Apply for an IRS EIN Online

For eligible applicants whose principal place of business is in the United States or a U.S. territory, the IRS online application is generally the most convenient option. The application is free, and an approved application can receive an EIN immediately. You must complete the process in one session because the application cannot be saved for later.

Follow these steps to apply for your IRS EIN:

1. Visit the official IRS website. Go to IRS.gov/EIN to access the official application.
2. Choose your business structure. Select the appropriate entity type, such as a sole proprietorship, partnership, corporation, or LLC.
3. Provide the required information. Enter the legal business name, business address, reason for applying, and responsible party details.
4. Review your application. Check that the information matches your business records before submitting it.
5. Receive your EIN. If the application is approved, follow the instructions to obtain your EIN assignment notice.
6. Save your confirmation letter. Download or print the confirmation for your business records.

The online application is subject to eligibility requirements, including having the responsible party’s valid Social Security number (SSN) or Individual Taxpayer Identification Number (ITIN). Only one EIN can generally be issued per responsible party per day.

What Information Do You Need to Apply for an EIN?

Preparing your information before starting the application can make the process easier. The IRS asks for details that establish the identity, structure, and tax-related purpose of your business. Requirements can vary depending on the type of entity and application method.

Before applying, prepare the following information where applicable:

• Your legal name and the business’s legal name.
• Your business mailing address and physical location.
• Your business structure and the reason for applying.
• The responsible party’s identifying information.
• The date the business started or was acquired.
• Information about employees and the principal business activity, if applicable.

If you are forming an LLC, partnership, or corporation, complete the required state registration before applying for an EIN. Applying with inconsistent business names or incorrect entity information may lead to delays or other complications.

Is an IRS EIN Free?

Yes. The IRS does not charge a fee to issue an EIN, whether you qualify to apply online or use another accepted application method. You can obtain your federal tax identification number directly from the official IRS website without paying a third-party service.

Some private websites offer to complete EIN applications for a fee. These services are not necessary if you can complete the application yourself, and they should not be confused with the official government website. Always verify that you are using IRS.gov before providing sensitive business or personal information.

Can You Apply for an IRS EIN From Outside the United States?

Yes. International applicants may apply for an IRS EIN even if their principal place of business is outside the United States. However, applicants whose principal place of business is outside the United States or its territories generally cannot use the IRS online EIN application.

Eligible international applicants can use Form SS-4 and apply by telephone, fax, or mail according to IRS instructions. The international EIN telephone number is 267-941-1099, which is not toll-free. Review the official instructions carefully to confirm the appropriate method and current submission details.

For applicants outside the United States, the responsible party does not necessarily need an SSN or ITIN to obtain an EIN through the international process. The form has specific instructions for applicants who are ineligible for or do not have a U.S. taxpayer identification number.

What Is the Difference Between an EIN, SSN, and ITIN?

An EIN, SSN, and ITIN are different identification numbers with different purposes. Choosing the correct number depends on whether the identification is for a business, an individual, or an individual with a U.S. tax reporting requirement.

• EIN: Identifies eligible businesses and organizations for federal tax administration.
• SSN: Generally identifies individuals for Social Security and related purposes.
• ITIN: Identifies certain individuals who need a U.S. taxpayer identification number but are not eligible for an SSN.

An EIN should not be used as a substitute for an SSN or ITIN on forms that specifically request an individual’s identification number. Similarly, a business owner should not automatically assume that obtaining an EIN eliminates personal tax filing obligations.

How Long Does It Take to Get an IRS EIN?

If you are eligible to use the online application and the IRS approves your submission, you can generally receive your EIN immediately. This makes the online method a practical choice for eligible applicants who need a number for business administration.

Other application methods take longer. Fax and mail processing times can vary, and international applicants should allow additional time for their applications to be processed. If you apply by fax or mail, follow the current IRS instructions and avoid submitting duplicate applications through multiple methods for the same entity.

What Should You Do After Receiving Your EIN?

Once you receive your IRS EIN, keep the confirmation notice in a secure place with your other important business documents. You may need the number when opening a business bank account, filing federal tax returns, completing employment paperwork, or dealing with other business-related requirements.

You should also use your EIN consistently on applicable federal tax forms and records. If your responsible party or other reportable business information changes, check the relevant IRS reporting requirements and deadlines. Remember that an EIN does not automatically register your business with your state or replace any required licenses or permits.

Common IRS EIN Mistakes to Avoid

Small errors during the EIN application process can create unnecessary delays. Before submitting your application, make sure the business name and entity type are correct and that the responsible party information is accurate. If you have already received an EIN, check whether you need a new one before submitting another application.

Avoid these common mistakes:

• Paying a third-party website when you can apply directly through the IRS for free.
• Applying online when your business does not meet the online eligibility requirements.
• Registering an LLC or corporation with the state after applying for an EIN instead of completing the required formation first.
• Losing your EIN confirmation notice or failing to maintain accurate records.
• Assuming that every business owner must obtain an EIN regardless of their circumstances.

Taking a few minutes to review the official requirements can help you choose the correct application method and reduce avoidable problems.

Frequently Asked Questions About IRS EIN

1. How do I get an IRS EIN for free?

Visit IRS.gov/EIN, review the eligibility requirements, and complete the official online application if you qualify. There is no IRS application fee, and approved eligible online applications generally receive an EIN immediately.

2. Can I get an EIN without an SSN?

Yes, in some circumstances. International applicants whose principal place of business is outside the United States or its territories can generally apply using the appropriate international procedure, including Form SS-4. Follow the IRS instructions for applicants without an SSN or ITIN.

3. Do I need an EIN to start an LLC?

An LLC’s EIN requirements depend on its federal tax classification and circumstances. Many LLCs need an EIN, especially if they have employees or are taxed as partnerships or corporations. Some single-member LLCs may not be required to obtain one for federal tax purposes, although an EIN can still be useful or necessary for other reasons.

4. Can I use my EIN to open a business bank account?

An EIN can be used as part of the identification information required to open a business bank account. However, banks establish their own documentation requirements and may request business formation documents, identification, or other information before approving an account.

5. Does an EIN expire?

An EIN is generally assigned permanently to the business entity and is not routinely renewed. If your business closes, you can request that the IRS close the associated business account, but the EIN itself is not reassigned to another business.

6. How can I find my EIN if I lose it?

Check your original EIN assignment notice, previous federal tax returns, or relevant business records. If you cannot find it, consult the IRS’s official guidance for recovering a lost or forgotten EIN and requesting verification when necessary.

Conclusion

An IRS EIN is an important part of managing federal tax responsibilities for many U.S. businesses and organizations. Knowing who needs an EIN, what information to prepare, and which application method to use can make the process easier and help you avoid unnecessary delays.

If you are eligible, applying directly through the IRS is the simplest way to obtain your number without paying an application fee. International applicants should follow the separate IRS procedures that apply to businesses located outside the United States. Before submitting your application, verify the latest requirements on the official IRS website and keep your EIN confirmation notice for future business needs.