Conformité financière des entreprises octobre 23, 2026

How to obtain multiple federal EINs for businesses: IRS rules and requirements

Points clés

  • An EIN is a federal tax ID number that’s required for, among others, corporations, partnerships, LLCs, and businesses with employees
  • On the EIN application, you must name the individual in charge of the entity and its assets, called the responsible party
  • You can apply for only one EIN per responsible party per day, which can slow down the process if the same responsible party is applying for multiple EINs.

What is an EIN, and when does a business need one?

A Federal Employer Identification Number (FEIN or EIN) is used to identify a business entity and is issued by the IRS. Because this is required to open a bank account and employ workers, it is typically essential for all businesses to obtain an EIN upon formation. The IRS changed its procedures for obtaining an EIN, making the process potentially more time-consuming—particularly for those who file frequently, like major corporations and law firms.

How do you apply for an EIN?

U.S. entities can apply for an EIN online, by fax, or by mail. If your organization was formed outside of the U.S. or U.S. territories, you may apply by telephone as well as by fax, online, or by mail.

This process takes about four days if applying by fax or about four weeks if applying by mail. It can take longer if all of the required information is not provided. The online application process is the fastest. Once the application is completed and the information is validated, an EIN can be issued immediately.

What are the challenges of obtaining multiple EINs?

Although the online process may seem like a fast and simple way to obtain an EIN, this is not necessarily so, particularly for frequent applicants.

Who can be the responsible party on an EIN?

All EIN applications (mail, fax, electronic) must disclose the name and Taxpayer Identification Number (SSN, ITIN, or EIN) of the "responsible party" who controls, manages, or directs the applicant entity and the disposition of its funds and assets. Unless the applicant is a government entity, the responsible party must be an individual (i.e., a natural person), not an entity.

The following persons are considered appropriate responsible parties:

  • For a corporation whose shares are traded on a public exchange or registered with the Securities and Exchange Commission (SEC), a principal officer
  • For a partnership, an individual general partner
  • For a partnership whose general partner is a corporation or other entity, an individual who would be considered a responsible party for that corporation or other entity
  • For a tax-exempt organization, a principal officer
  • For a government entity, the agency or agency representative in a position to legally bind that government entity
  • For a trust, the grantor, owner or trustor
  • For a decedent’s estate, the executor, administrator, personal representative or another fiduciary
  • For all other entities, the person who has a level of control over, or entitlement to, the funds or assets in the entity that, as a practical matter, enables the individual, directly or indirectly, to control, manage or direct the entity and the disposition of its funds and assets.

The IRS does not authorize the use of nominees to obtain EINs. A "nominee" is someone who is given limited authority to act on behalf of an entity, usually for a limited period of time, and usually during the formation of the entity. The "responsible party" is the individual or entity that controls, manages, or directs the entity and the disposition of the entity's funds and assets, unlike a nominee, who is given little or no authority over the entity's assets.

How many EINs can a responsible party obtain per day?

Only one EIN can be obtained per responsible party per day. So if the same responsible party wants to obtain EINs for multiple entities, that cannot be done all at once. They will have to wait and apply for only one per day. This IRS restriction is tied to the responsible party, not to the business entity, and applies to all requests for EINs, whether online, by phone, fax, or mail.

How do you report a change of address or responsible party to the IRS?

Entities must report any changes to their business mailing address, business location or identify their responsible party. Changes to the responsible party must be reported to the IRS within 60 days. Form 8822-B, Change of Address or Responsible Party – Business, is filed to notify the IRS of these changes.

Working around these hurdles and also tracking multiple EIN applications means that law firms and corporate paralegals spend a substantial amount of time focused on this process alone.

Get help obtaining EINs for multiple business entities

Learn how CT Corporation’s document filing services can support all of your business formation needs including obtaining FEINs.

The CT Corporation staff is comprised of experts offering global, regional, and local expertise on registered agent, incorporation, and legal entity compliance.

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