How to Get an EIN for Your Accounting Business in Indiana (2026)

Starting an accounting business in Indiana in 2026 requires an Employer Identification Number (EIN) from the IRS. Whether you're forming a CPA firm, bookkeeping service, or tax preparation business, this guide simplifies the EIN application process. Lovie can streamline this process even further, automating your company formation and EIN registration.

What is an EIN?

An EIN is a unique nine-digit tax identification number assigned by the IRS to business entities. It's like a Social Security number for your business, used to identify your company for tax purposes. You'll need an EIN to hire employees, open a business bank account, and file certain types of taxes.

How to Apply for an EIN

  1. Determine Eligibility: Confirm that your Indiana accounting business meets the IRS requirements for obtaining an EIN. Generally, any entity formed as a corporation, partnership, or LLC, or those with employees, needs an EIN.
  2. Choose a Responsible Party: Designate a 'responsible party' – an individual who controls, manages, or directs the applicant entity and the disposition of its funds and assets. This person must have a valid Taxpayer Identification Number (SSN or ITIN).
  3. Complete Form SS-4: Fill out IRS Form SS-4, Application for Employer Identification Number. This form requires information about your Indiana accounting business, such as its legal name, address, business activity, and the responsible party's details.
  4. Submit the Application: You can apply for an EIN online through the IRS website, by mail, fax, or phone (for international applicants only). The online method is the fastest and most efficient.
  5. Receive Your EIN: Upon successful submission of Form SS-4, you'll receive your EIN from the IRS. If applying online, you'll typically receive it immediately. Mailed or faxed applications can take several weeks.
  6. Verify EIN Accuracy: Double-check the EIN confirmation notice to ensure all information is accurate. If there are any errors, contact the IRS immediately to correct them.

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