What Is an EIN and Does Your Business Need One?
Federal Business Identification
What Is an EIN and Does Your Business Need One?
An Employer Identification Number is commonly used to identify a business or organization for federal tax and reporting purposes.
This guide explains what an EIN is, why businesses use it, when one may be required, and how to apply directly through the Internal Revenue Service.
EIN Explained
What Is an Employer Identification Number?
An Employer Identification Number, commonly called an EIN, is a nine-digit federal identification number assigned by the Internal Revenue Service.
It may also be called a federal employer identification number or federal tax identification number. Businesses and organizations use EINs for certain federal tax, banking, payroll, licensing, and reporting activities.
An EIN identifies the business or organization. It is different from a Social Security number, which identifies an individual.
The IRS issues EINs directly at no cost. Business owners should be cautious of third-party websites that charge a fee simply to issue an EIN.
Visit the Official IRS EIN Application Page ↗Business Registration and Operations
What Is an EIN Used For?
An EIN may be requested during several stages of starting and operating a business.
Federal Tax Reporting
An EIN may identify a business or organization when it completes certain federal tax forms and reporting requirements.
Hiring Employees
Businesses with employees generally use an EIN for payroll tax administration and employment reporting.
Opening a Business Bank Account
Banks may request an EIN along with formation records, identification, and other business documentation.
Business Licenses and Permits
Some state, county, city, or industry registrations may request the company’s federal identification number.
Vendor and Client Forms
A business may use its EIN when completing certain vendor, customer, payment, or reporting documents.
Business Credit Applications
Creditors and financial institutions may request an EIN while reviewing a business application.
EIN Requirements
Does Every Business Need an EIN?
Not every business has the same federal identification requirements.
Whether you need an EIN can depend on your business structure, employees, tax elections, retirement plans, organization type, and other federal filing requirements.
Review your circumstances using official IRS information or consult a qualified tax professional when you are unsure.
Review the IRS EIN QuestionnaireSole Proprietorships
Does a Sole Proprietor Need an EIN?
Some sole proprietors may be able to use their Social Security number for certain federal tax purposes when they do not have employees and do not meet another EIN requirement.
However, a sole proprietor may still choose or need to obtain an EIN for banking, payroll, privacy, licensing, or other business purposes.
Business owners should confirm their individual requirements directly with the IRS or a qualified tax professional.
EIN Application Process
How to Apply for an EIN
The IRS provides several application methods. Eligible applicants may complete the online application directly through IRS.gov.
Form the Legal Entity First
If you are creating an LLC, corporation, partnership, or nonprofit corporation, complete the applicable state formation process before requesting the EIN.
View Business Formation Support →Identify the Responsible Party
The application requests information about the person who ultimately owns or controls the entity or exercises effective control over it.
Gather Accurate Business Information
Prepare the legal business name, trade name when applicable, mailing address, structure, responsible party information, and reason for applying.
Apply Through the IRS
Eligible applicants can apply online. The IRS also provides mail and fax application methods through Form SS-4.
Review Form SS-4 Information ↗Save the Confirmation Letter
Save the EIN assignment notice securely with the company’s formation documents, licenses, tax records, and banking information.
Use Consistent Business Information
Use the same legal business name and identifying information across banking, licenses, payroll, bookkeeping, and government registrations.
Application Preparation
Information to Organize Before Applying
Gather your business records before beginning the application so the information is accurate and consistent.
The exact questions may vary depending on the entity type and reason for applying.
Request Startup AssistanceUnderstanding Business Identifiers
EIN vs. Other Business Numbers
EIN
A federal identification number issued by the Internal Revenue Service for eligible businesses and organizations.
State Registration Number
A number or identification record connected to the business entity’s state registration.
State Tax Account Number
An identifier connected to specific state tax accounts, such as employer withholding or sales and use tax.
UEI
A Unique Entity Identifier used for entities registered through SAM.gov for certain federal awards, registrations, grants, and contracts.
NAICS Code
A classification code that identifies the type of economic activity performed by a business.
CAGE Code
An identifier used for certain organizations conducting business with the federal government.
Application Accuracy
Common EIN Application Mistakes
Form the legal entity first when creating an LLC, corporation, partnership, or nonprofit corporation.
Enter the name exactly as it appears on the approved formation or registration documents.
A DBA or trade name may be different from the legal entity name.
The structure selected should match the company’s actual legal formation.
Avoid repeatedly applying because a confirmation was misplaced or delayed.
Keep the IRS assignment notice with permanent business records.
Business Changes
When Might a Business Need a New EIN?
A business does not automatically need a new EIN for every change.
According to the IRS, a new EIN is generally connected to certain changes in ownership or legal structure. A business usually does not need a new EIN solely because it changes its name or address.
The requirements vary by entity type, so review the applicable IRS instructions before applying again.
Review the Official IRS Guidance ↗Natari Firm Startup Support
How Natari Firm Can Help
Natari Firm helps entrepreneurs organize business information and understand the administrative steps involved in launching a company.
We can help prepare the information needed for an EIN application and connect that step with your larger startup process.
Natari Firm does not issue EINs, guarantee an application result, prepare tax returns, or provide legal or tax advice. EINs are issued by the Internal Revenue Service.
Related Natari Firm Services
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Frequently Asked Questions
Employer Identification Number Questions
How much does an EIN cost?
The IRS issues EINs directly at no cost. Third-party service providers may charge for application assistance, but that fee is not an IRS EIN fee.
Apply Directly Through the IRS ↗Should I form my LLC before applying for an EIN?
Yes. The IRS advises applicants creating an LLC, corporation, partnership, or nonprofit corporation to complete state formation before applying for the EIN.
Can I use an EIN instead of a Social Security number?
An EIN identifies the business for eligible business and tax purposes. It does not replace a Social Security number in every personal or individual situation.
Can I get more than one EIN?
Different legal entities may require separate EINs. A business should not apply for additional EINs unnecessarily. Review IRS guidance for the specific entity and ownership situation.
Does an EIN prove that a business is licensed?
No. An EIN is a federal identification number. State registration, professional licensing, local permits, and tax-account registration are separate processes.
Can Natari Firm help with EIN preparation?
Natari Firm may assist with information organization, application preparation, document checklists, and general startup support.
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