How to Get an EIN for Your LLC or Corporation

An Employer Identification Number, or EIN, is one of the first tax identifiers many new business owners need after forming a company in the United States. If you are starting an LLC or corporation, getting an EIN helps you open business bank accounts, hire employees, file taxes, and keep personal and business finances separate.

For many founders, the EIN process is straightforward. For others, especially non-U.S. owners or first-time entrepreneurs, the application can feel confusing because the IRS asks for specific information and the right filing method depends on your situation. This guide explains what an EIN is, who needs one, how to apply, and what to do after you receive it.

What Is an EIN?

An EIN is a nine-digit number issued by the IRS to identify a business for tax purposes. It functions much like a Social Security Number, but for a company instead of an individual.

Businesses use an EIN for many reasons, including:

• Opening a business bank account
• Hiring employees and processing payroll
• Filing federal and certain state tax forms
• Applying for licenses and permits
• Working with vendors, payment processors, and financial institutions
• Separating business activity from personal finances

If you are forming a new LLC or corporation, an EIN is often one of the most important early setup steps.

Who Needs an EIN?

Many business entities need an EIN, but not every business is required to have one immediately.

You typically need an EIN if your business:

• Is a corporation
• Has employees
• Files excise taxes or certain other federal tax returns
• Withholds taxes on income paid to non-resident owners or others
• Has more than one owner as a partnership or multi-member LLC
• Opens a business bank account that requires an EIN
• Needs to establish credit, payment accounts, or vendor relationships in the business name

A single-member LLC may not always be required to obtain an EIN right away if it has no employees and does not file certain tax returns. Even so, many owners still choose to get one because it is useful for banking, privacy, and business operations.

Corporations generally need an EIN, and most new corporations apply for one as soon as they are formed.

Why an EIN Matters for LLCs and Corporations

Getting an EIN is more than just completing an IRS form. It supports the structure and credibility of your business.

An EIN helps you:

• Keep business and personal finances separate
• Reduce the risk of using personal identifiers for business activity
• Set up payroll and contractor payments
• File business taxes correctly
• Complete onboarding with banks and payment providers
• Establish your business as a distinct legal and financial entity

If your goal is to build a company that can grow cleanly and professionally, an EIN is part of that foundation.

Step 1: Form Your Business First

Before you apply for an EIN, your LLC or corporation should be formed with the state.

In most cases, that means:

• Choosing your business name
• Filing formation documents with the state
• Appointing a registered agent where required
• Receiving your approved formation records

The IRS generally expects your business to exist before you request an EIN. If you are still in the planning stage, focus on the formation step first.

Step 2: Choose the Right Application Method

The IRS offers different ways to apply for an EIN, and the right method depends on who is applying.

Online application

The IRS online EIN application is the fastest option for many U.S.-based applicants. In many cases, the responsible party must have a valid Social Security Number, Individual Taxpayer Identification Number, or existing EIN to use the online system.

If you qualify, the online process can usually issue an EIN immediately after submission.

Fax or mail application

If the responsible party does not have a U.S. tax ID, the online option may not be available. In that case, you typically complete Form SS-4 and submit it by fax or mail.

This process takes longer, but it is the standard path for many foreign owners and other applicants who cannot use the online system.

Phone application for international applicants

The IRS also allows certain international applicants to apply by phone using the designated international EIN line. Availability and procedures can change, so applicants should verify current IRS instructions before calling.

Step 3: Gather the Information You Will Need

Before starting the application, collect the business details the IRS will ask for. Having everything ready makes the process faster and lowers the chance of mistakes.

You will usually need:

• Legal name of the business
• Trade name, if any
• Business mailing address
• County and state where the business is located
• Name of the responsible party
• Taxpayer identification number for the responsible party, if available
• Type of entity, such as LLC or corporation
• Reason for applying for the EIN
• Date the business was started or acquired
• Closing month of the accounting year
• Number of employees you expect to hire in the next 12 months
• Primary business activity and product or service description

If you are applying for a corporation or a multi-member LLC, make sure the entity information matches your formation records exactly.

Step 4: Complete the EIN Application Carefully

Accuracy matters on the EIN application. The IRS uses the information to create the business tax record, so small errors can lead to delays or follow-up questions.

Pay close attention to:

• Exact legal spelling of the company name
• Entity type selection
• Responsible party details
• Address formatting
• State of formation
• Reason for applying

If your application includes a mismatch between your formation documents and your IRS form, you may run into processing issues later when opening a bank account or filing taxes.

Step 5: Submit the Application and Save the Confirmation

Once the application is complete, submit it through the method that fits your situation.

If you apply online, save or print the EIN confirmation notice immediately. If you submit Form SS-4 by fax or mail, keep a copy of everything you send and retain the IRS confirmation when it arrives.

Your EIN should be stored with your business records. You will likely need it for:

• Banking
• Tax filings
• Payroll setup
• Vendor onboarding
• State registrations
• Compliance records

How Long Does It Take to Get an EIN?

Processing time depends on how you apply.

• Online applications may receive an EIN immediately
• Fax applications may take several business days
• Mail applications usually take longer than fax submissions

If timing is important, many founders prefer to apply as soon as the business is formed so the EIN is ready when they need to open a bank account or complete onboarding paperwork.

Common EIN Mistakes to Avoid

A simple application can still create problems if key details are wrong. Common mistakes include:

• Applying before the company is properly formed
• Using a business name that does not match the state filing
• Entering the wrong entity type
• Choosing the wrong responsible party
• Forgetting to keep the EIN confirmation
• Assuming a single-member LLC never needs an EIN
• Waiting too long and delaying banking or payroll setup

If your business structure is new to you, it is worth slowing down and checking each field before submitting.

What to Do After You Receive Your EIN

Once you have your EIN, the next steps depend on your business plans.

You may need to:

• Open a business bank account
• Set up bookkeeping and accounting systems
• Register for state tax accounts if required
• Apply for local licenses and permits
• Create payroll accounts if you plan to hire employees
• Update contracts and vendor records with your business details

An EIN is a foundation, not the finish line. It gives your company the tax identity it needs to operate more cleanly and professionally.

EINs for Non-U.S. Owners

Many non-U.S. founders form U.S. LLCs and corporations. In those cases, the EIN process can involve different IRS procedures, especially if the responsible party does not have a Social Security Number or ITIN.

Common considerations include:

• Online filing may not be available to every applicant
• Form SS-4 may need to be faxed or mailed
• Business formation documents should be kept consistent across all filings
• Banking and compliance steps may require additional documentation

If you are forming a U.S. company from abroad, it is important to understand both the formation and EIN steps before you begin.

How Zenind Helps New Business Owners

Zenind helps entrepreneurs form their companies in the United States and stay organized through the early stages of business setup. For founders who want a smoother start, having formation support makes it easier to move from state filing to operational readiness.

A strong setup process can help you:

• Form your LLC or corporation correctly
• Keep filing details organized
• Move more efficiently toward banking and tax setup
• Reduce confusion during early compliance tasks

If you are building a new business, treating formation, EIN registration, and compliance as connected steps can save time and prevent avoidable delays.

Frequently Asked Questions

Do I need an EIN for a single-member LLC?

Not always, but many single-member LLCs still get one because it is useful for banking, privacy, and tax administration.

Can I open a business bank account without an EIN?

Some banks require an EIN, especially for LLCs and corporations. In practice, most owners secure the EIN before applying for business banking.

Is an EIN the same as a business license?

No. An EIN is a federal tax identification number. A business license is a separate authorization that may be issued by a state, county, or city.

Does an EIN expire?

No. Once issued, an EIN generally stays with the business unless the IRS tells you otherwise due to a specific structural change or administrative issue.

Can I use the same EIN for multiple businesses?

No. Separate business entities usually need separate EINs.

Final Thoughts

Getting an EIN is a key milestone for any LLC or corporation. It helps establish your business identity, supports tax compliance, and makes it easier to open accounts, hire employees, and grow with confidence.

If you handle your formation and EIN steps carefully, you can move from startup paperwork to real business operations with fewer delays and less confusion.