Businesses

Register a Business

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Are you registered as a Corporation with the state of Indiana? You must do this first before you proceed to register with the Indiana Department of Revenue.

Who needs to register?

If you are starting a new business in Indiana, you may need to register with the Indiana Department of Revenue (IDOR). Registration is required if you will have employees, intend to engage in selling (retail or wholesale) and/or renting/leasing tangible personal property, etc..

Note: Companies registering for Indiana Withholding Tax must provide their Federal Employer Identification Number (EIN). Register for a Federal Identification Number (EIN)

If you indicate on your Business Tax Application (BT-1), that you will be collecting Indiana Gross Retail Sales Tax you will be issued a Registered Retail Merchants Certificate (RRMC). A RRMC must be displayed at each location you intend to collect Indiana Sales Tax and/or issue and receive exemption certificates.

A company that has no employees and simply provides a service may not need to register. If you are unsure, please contact the Department for additional information.

There is separate information for Independent Contractors doing business in Indiana. Please review this information for things you need to be aware of.

An application fee is required for most tax registrations.

Upon registering with the IDOR, you will be assigned an Indiana Taxpayer Identification Number (TID). It is important that you include your Indiana Taxpayer Identification Number when filing returns, remitting taxes, and on any information/documentation that you submit to the Department.

Need more detailed information pertaining to new businesses? Check out the general requirements for starting your own business in the Business Owner's Guide to State Government.

How do I register?

Internet:

Submit Form BT-1 online. Using this service should reduce the time it will take to register with IDOR for the various tax types.

Paper:

Download a copy of Form BT-1

You may mail the completed application to:

Indiana Department of Revenue
Systems Services
P.O. Box 6197
Indianapolis, IN 46206-6197

If you elect to mail in Form BT-1, it will take approximately 4-6 weeks to complete the registration process.

Request Form BT-1 to receive it through the mail.

In Person:

Visit our Taxpayer Service Center in the Indiana Government Complex or any of the IDOR District Offices. Simply bring in your completed BT-1 application for same day service.

Form BT-1 may be used to register you for the following taxes:

Alcohol/Tobacco Tax - Section B
County Innkeepers Tax (CIT) - Section B & E
Food and Beverage Tax (FAB) - Section B & D
Motor Vehicle Rental Excise Tax and County Supplemental MVR Tax (MVR) - Section B & F
Sales and Use Tax - Sections B
Withholding Tax - Section C

Register multiple locations.

You must complete a separate BT-1 for each location you want registered. If you wish to consolidate tax filings for all or some of your locations you may choose to complete Form BT-1C (Authorization for Consolidated Sales Tax Filing Number) which is in the back of the BT-1 Packet.

Important Reminders:

To avoid delays in processing applications, please make sure all the applicable information is complete and the form is signed.
Please note that the application will be delayed if any individuals listed on Line 6, or the business itself has any outstanding tax liabilities.
When you close your business, you will be responsible for contacting the Department to notify us of the closure. Failure to do this may result in billings being issued for failure to file returns.

Indiana Reference Material:

Annotated BT-1 - BT-1 Form with line by line references to Information Bulletins, Indiana Code (IC), and Indiana Administrative Code (IAC)