Getting an employer identification number is one of the simplest administrative steps in starting a business, but the timing matters. If you have already formed an LLC, corporation, or partnership, you can usually apply directly with the IRS at no cost. For eligible U.S.-based applicants, the online process can issue an EIN immediately after the application is approved.
An EIN is a nine-digit federal tax identification number used to identify a business or other entity for tax reporting. You may need it to hire employees, file certain federal tax returns, operate a partnership or corporation, or handle employment and excise taxes.
Before You Apply for an EIN
If you are creating a legal entity such as an LLC, corporation, or partnership, complete the state formation process first. The IRS advises forming the entity through your state before requesting an EIN.
Do You Actually Need an EIN?
You generally need an EIN if you have employees, operate as a partnership or corporation, or must pay certain employment or excise taxes. A single-member LLC treated as a disregarded entity may not need its own EIN for federal income tax purposes if it has no employees and no excise-tax filing requirement. However, it can still obtain one for banking or state tax purposes.
Sole proprietors without employees may also be able to use their Social Security number for some federal tax purposes. Your business structure affects the answer, so topics such as LLC registration process and sole proprietorship vs LLC are useful internal resources to connect with this step.
What You Need for a Free EIN Application
Before opening the IRS application, gather your legal business name, trade name if applicable, mailing and physical address, entity type, reason for applying, date the business started or was acquired, and information about expected employees or tax obligations.
You must also identify the responsible party, meaning the person who ultimately owns or controls the entity and its assets. For the online application, the responsible party generally needs a Social Security number or individual taxpayer identification number. A nominee is not considered the responsible party and should not apply as though they control the business.
How to Get an EIN Number Online
1. Use the Official IRS EIN Application
Start with the EIN application on the official IRS website. The IRS does not charge a fee to issue an EIN. Be careful with commercial websites that resemble government pages but charge a processing fee for a service you can complete yourself for free.
2. Choose the Correct Entity Type
Select the structure that matches the business you actually formed. An LLC should be identified as an LLC, while a corporation or partnership should be entered accordingly. Your answers determine later questions in the application, so choosing the wrong entity type can create unnecessary tax-account complications.
3. Enter the Responsible Party and Business Details
Enter the responsible party’s information and use the exact legal business name shown in your records. For example, if your state documents say “River Stone Design LLC,” do not enter “Riverstone Designs” simply because that is the brand name you plan to use.
4. Complete the Application in One Session
The IRS online EIN tool must be completed in one session and cannot be saved for later. A session expires after 15 minutes of inactivity. Keep your formation documents and responsible-party information beside you before starting so you can move through the questions without delays.
5. Save Your EIN Confirmation
If the online application is approved, the IRS can issue the EIN immediately. Save or print the confirmation letter and keep it with your permanent business records. You may need the EIN when opening a business bank account, setting up payroll, filing tax forms, or completing other registrations.
A practical habit is to create one secure digital folder for your formation documents, EIN confirmation, state registrations, and key tax records. This makes future banking, accounting, and compliance tasks easier.
What If You Cannot Apply Online?
The online tool is intended for applicants whose principal place of business is in the United States or U.S. territories and who meet the IRS eligibility rules. If your principal place of business is outside the United States, you cannot use the online EIN application.
You can also submit Form SS-4 by fax or mail. The IRS currently says fax applications that include a return fax number are generally answered in about four business days, while mailed applications take approximately four weeks. International applicants can also use the IRS international EIN process, including phone, fax, or mail options.
The IRS limits EIN issuance to one EIN per responsible party per day. If you are forming several entities, plan the applications rather than attempting to obtain multiple EINs for the same responsible party on the same day.
Common EIN Mistakes to Avoid
A common mistake is paying an unnecessary third-party fee for a free EIN application. Another is applying before the LLC or corporation has been legally formed. Business owners can also run into problems when the legal name, responsible-party information, or entity type does not match the underlying records.
Do not request a new EIN simply because you changed your business name or address. Whether a new EIN is required depends mainly on changes in ownership or business structure. The IRS provides separate procedures for updating business information when a new EIN is not required.
Frequently Asked Questions
Is an EIN number free?
Yes. The IRS issues EINs free of charge. Eligible applicants can use the official online application without paying a government filing fee.
How long does it take to get an EIN?
If you qualify to apply online and the request is approved, the EIN can be issued immediately. The IRS says fax applications generally take about four business days, while mailed Form SS-4 applications take approximately four weeks.
Does every LLC need an EIN?
Not in every situation. A single-member LLC with no employees and no excise-tax obligations may not need a separate EIN for federal income tax purposes. Many LLCs still obtain one for employees, banking, state requirements, or other business administration.
Can I get an EIN before forming my LLC?
You should form the legal entity with your state first. The IRS advises registering an LLC, partnership, corporation, or other legal entity before applying for its EIN.
Get the EIN Once Your Business Is Ready
For most new business owners, the process is straightforward: form the legal entity first, gather the responsible-party and business information, then apply directly through the IRS. The online application is free and can provide the number immediately when approved. Entering the legal name and entity details carefully can prevent avoidable cleanup later and give your business the federal tax identifier it needs for the next stage of setup.