Navigating Multiple EINs: A Guide for Businesses

For tax and compliance, the IRS uses Employer Identification Numbers (EINs) to identify businesses. An EIN is required for tax filings, business bank accounts, and establishing credit. While most businesses only need one, certain situations require applying for and managing multiple EINs.

This guide explains when multiple EINs are needed and offers a step-by-step process for obtaining them, ensuring compliance with IRS regulations.

Identifying the Need for Multiple EINs

Before applying for multiple EINs, determine if your business structure warrants it. Generally, each distinct legal entity requires its own EIN. Common scenarios include:

If you operate multiple distinct business entities, such as a multi-member LLC, an S Corp, a C Corp, an LLP, a partnership, or a non-profit organization, each needs a unique EIN. Even if the same person operates these businesses, each legal structure must have its own EIN for tax separation and compliance.

When a company divides into independent entities, each new entity needs its own EIN. If the divisions operate with separate legal structures and management, they must obtain individual EINs for accurate tax reporting.

Step-by-Step Guide to Obtaining Multiple EINs

The process for obtaining multiple EINs is the same as for a single EIN, but must be repeated for each entity. Note that the IRS restricts applications to one EIN per responsible party per day.

To apply, complete Form SS-4, "Application for Employer Identification Number," for each EIN required. This form gathers essential details about the business, including its legal name, address, responsible party, and business activities.

Application Methods

You can apply for an EIN through these methods:

Online Application

The IRS provides an online EIN application on its website. This is the fastest method, providing your EIN immediately upon successful submission.

Mail

Mail the completed Form SS-4 to:

Internal Revenue Service

Attention: EIN Operation

Cincinnati, OH 45999

Fax

You can fax Form SS-4 to (855) 641-6935.

This article is general information, not advice for your situation. Facts and thresholds change; confirm before acting.