Indiana Business Tax Application (BT-1) helps Business Owners and Employers register for state taxes required to operate legally in Indiana.
This guide explains How To complete the BT-1 via INBiz, what information you need, processing expectations, and steps To manage multi-location filings.
1. Overview of Indiana BT-1 Registration
The BT-1 form establishes tax accounts with the Indiana Department of Revenue for sales, withholding, and other state taxes.
Registration is required before collecting sales tax, hiring employees, or engaging in taxable activities such as renting vehicles or lodging.
Who Needs To Register
Businesses that sell tangible goods must register for Sales Tax.
Employers with employees must register for Withholding Tax.
Other activities that require registration include selling food and beverages, renting accommodations for less than 30 days, renting motor vehicles, distributing gasoline, and selling tires or fireworks.
Separate Location Requirements
Each physical business location requires its own BT-1 registration and account number.
If you plan To consolidate filings for multiple locations you must complete Form BT-1C to authorize consolidated Sales Tax filing numbers.
2. Prepare Your Information Before Applying
Gathering the required details ahead of time will speed up the BT-1 process on INBiz.
Required items include an Email Address, Federal Identification Number (EIN), and the business Legal Name.
Additional Data Needed
Be ready with the Type of Organization and, if applicable, the Indiana Secretary of State Control Number.
You will also need a NAICS Code, Responsible Officer information including Social Security Number, primary mailing address, and business location address and phone number.
Document Locator Number (DLN)
The online application will produce a Document Locator Number during submission.
Keep the DLN for tracking the application and any future correspondence with the Indiana Department of Revenue.
3. How To Register Through INBiz
INBiz is Indiana's one stop portal for business registration and management and is the recommended method for filing BT-1 online.
The online process is streamlined and typically faster than paper submissions.
Step by Step Registration Steps
1. Access the INBiz portal and create an account if you do not already have one.
2. Start the BT-1 application and enter the requested business and Responsible Officer details.
3. Select the Tax Types you need such as Sales Tax, Withholding, Food and Beverage Tax, or Motor Vehicle Rental Excise Tax.
4. Review entries carefully and submit the application.
5. Pay any applicable fees such as the $25 non refundable fee for a Retail Merchants Certificate when required.
6. Watch for the confirmation email that includes your DLN and next steps.
4. Processing Time and Assigned Identifiers
The Indiana Department of Revenue generally processes BT-1 applications within 48 to 72 hours.
If approved you will receive a Taxpayer Identification Number (TID) and instructions for filing and payment obligations.
If questions arise the Department will contact the Responsible Officer or Business Contact listed on the application.
5. Special Considerations For Multiple Locations and Maintenance
Register each physical location separately unless you obtain authorization To consolidate filings with Form BT-1C.
Corporations and LLCs must maintain good standing by filing annual or biennial reports with the Indiana Secretary of State.
Consolidated Filing Options
Form BT-1C enables qualifying businesses To consolidate Sales Tax accounts for multiple locations into a single filing number.
This can simplify remittance and reporting but requires proper authorization through the Indiana DOR process.
6. Employer Responsibilities and Best Practices
Employers must ensure withholding accounts are established before payroll runs to avoid liabilities.
Keep accurate records of EINs, TIDs, DLNs, and account numbers and update Payroll Software promptly when numbers are assigned.
- Register each location using BT-1 unless consolidating with BT-1C.
- Use INBiz for faster online BT-1 submissions.
- Retain your DLN and confirmation emails for future reference.
- Pay fees such as the $25 Retail Merchants Certificate where applicable.
- Contact the DOR promptly if you receive follow up requests for information.
Common Mistakes To Avoid
Do not forget To include the Indiana Secretary of State Control Number for corporations and LLCs where required.
Do not assume one registration covers multiple physical locations unless you have completed BT-1C authorization.
7. Quick Reference Table of Tax Accounts and Registration
| Account Type | Agency | How To Register |
|---|---|---|
| Sales Tax | Indiana Department of Revenue | Register online via INBiz using Form BT-1; each location requires registration unless using BT-1C |
| Withholding Tax | Indiana Department of Revenue | Include payroll and Responsible Officer details on BT-1 to obtain a withholding TID |
| Food and Beverage Tax | Indiana Department of Revenue | Select the tax type on BT-1 when selling prepared food or beverages |
| County Innkeeper's Tax | Indiana Department of Revenue / Local County | Register lodging locations on BT-1 and verify county level requirements |
| Motor Vehicle Rental Excise Tax | Indiana Department of Revenue | Register via BT-1 when renting motor vehicles for use in Indiana |
8. Additional Resources and Official Links
- Indiana Department of Revenue
- INBiz Portal
- BT-1 Application Checklist
- New and Small Business Education Center
- Indiana Secretary of State
Indiana Business Tax Application (BT-1): Conclusion
Completing the BT-1 via INBiz is a key compliance step for Indiana Business Owners and Employers who sell goods, hire employees, or engage in taxed activities.
Prepare required documents, register each location as needed, consider BT-1C for consolidated filings, and monitor email for DLN and TID confirmations to stay compliant.







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