Starting a Practice

What's an EIN and Do I Need One for My Private Practice?

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March 10, 2024
Updated
September 1, 2026
July 29, 2021
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Key Takeaways:

  • Sole proprietors do not need an EIN to operate
  • You need an EIN to form a business entity (LLC, S corp, etc.)
  • Sole props need an EIN to open a business bank account, hire employees, or apply for a business loan or line of credit

Your employer identification number (EIN)—also known as a “federal employee identification number” or “federal tax identification number”—is a nine digit number the IRS uses to track your business for tax purposes.

Think of it as a social security number for your business. 

Don’t be fooled by the word “employer.” Any therapy practice can apply for an EIN, regardless of whether it has employees. 

Here’s an overview of what an EIN does, how to get one, and how to decide whether your practice needs an EIN.

Do you need an EIN for your therapy practice? 

If you are a sole proprietor, you don’t need an EIN. You can use your personal SSN to identify your business—since, for tax purposes, you and your business are identical.

If you plan to form a partnership, register an LLC, or elect S corporations status, you're required by law to get an EIN.

Even if you’re a sole proprietor with no plans to form a separate business entity, you need an EIN in order to:

Depending on your location, your state or local government may require you to have an EIN in order to apply for business permits and licenses.



EIN decision table for therapy practices

Business moveEIN required?
Operating as a sole proprietorNo
Opening a business checking accountYes
Applying for a business loan or line of creditYes
Hiring employeesYes
Registering a Keogh or Solo 401(k) retirement planYes
Registering a SEP IRA (no employees)No
Forming an LLC, S corporation, partnership, or other business entityYes

Do you need an EIN for HIPAA?

Strictly speaking, you do not need an EIN in order to remain HIPAA compliant. If you're wondering what an EIN is in medical billing, it's rarely used directly — your national provider identification (NPI) is what identifies you on claims.

In the context of HIPAA, An EIN only really comes into play when you need to identify yourself as an employer—for instance, when administering group employee benefits.

For the purpose of transmitting clients’ protected health information (PHI), you typically use NPI to identify yourself and your practice. Some practices also call this a “practice ID” or “tax ID.”

Reasons to get an EIN as a therapist

Even if you don’t require an EIN, getting one can benefit you and your practice.

An EIN can:

  • Reduce the risk of identity theft. As a sole proprietor, you may need to provide your SSN to identify yourself on public-facing documents. Using an EIN instead protects your SSN. 
  • Help establish business credit. An EIN allows you to build a business credit history distinct from your personal credit. Building good credit for your practice helps you borrow money and get favorable terms in the future.
  • Establish the validity of your practice. Opening your own therapy practice with its own EIN sets a boundary between your professional and personal lives. It makes your practice more “legitimate” both in your own eyes and in the eyes of financial institutions and other businesses.

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How to apply for an EIN as a therapist

Applying for an EIN is free and takes about 15 minutes. The fastest and easiest way to obtain an EIN is to apply online.

Here’s how to do it:

  1. Choose the right time. Online applications are open 6am – 1am EST weekdays, 6am – 9pm Saturdays, and 6am – 12am Sundays. 
  2. Prepare your information in advance. You’ll need your business entity type, your business address, your reason for applying (eg. banking purposes, new business entity), and your SSN.
  3. Visit the online application portal. Register for an EIN here.
  4. Complete the application. Completing the application is a matter of selecting from multiple choice questions and filling out required fields.
  5. Submit the application and wait for your EIN. In most cases, you will receive your new EIN on the next business day.
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Summary:

  • Sole proprietors do not need an EIN, but it’s required to open a business bank account, build business credit, and open certain types of retirement savings accounts
  • Any business entity besides a sole proprietorship requires an EIN in order to operate
  • For HIPAA purposes, your practice will usually use its NPI, not its EIN, to identify itself
  • An EIN can help prevent identity theft by saving you from using your SSN on public-facing documents
  • Applying for an EIN online iis free and takes 15 minutes


Visit our Therapist Tax Center and Tax Deductions for Therapists Hub for everything you need to know about taxes as a practice owner. If you're just starting out, here's everything you need to know about How to Start a Private Practice as a Therapist.


This post is to be used for informational purposes only and does not constitute legal, business, or tax advice. Each person should consult their own attorney, business advisor, or tax advisor with respect to matters referenced in this post.

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