Business Taxpayers
Filing or Paying Business Taxes
- Register, File, Pay, and Manage Taxes
- Submit an Indiana Schedule IN K-1
- Electronic IRP Processing
- EFT - Electronic Funds Transfer
- EDI - Fuel Tax Electronic Initiatives
- View and make estimated corporate income tax payments through IN-ePay.
- Locate Forms and Publications
General Information about Business Taxes
- Register a New Business
- File a Business Tax Application (BT-1)
- What to do if you get a tax bill
- Tax Types, Rates, Penalties, and Interest
- Business Return Due Dates
- Your Use Tax Liability
- Income Tax Overview for Businesses
- Frequently Asked Questions
- Reference Library
Account Maintenance
- Contact the DOR
- Change Business Address, Contact Name, and/or Phone Number
- Notify the Department of a Business Account Closure
- Submit a Legal Business Name Change
Streamlined Sales Tax
Streamlined Sales Tax (SST) is a multi-state initiative to reduce the burden of collecting, reporting and remitting sales and use tax across state lines for both e-commerce and traditional brick-and-mortar businesses. More...
Additional Resources
The State Information Center is the single point of contact for business start-up information and source for the general public to find answers to questions relating to all aspects of state government.
- For Federal Information, log on to irs.gov.
- The Federal Taxpayer Advocate Service helps resolve ongoing problems with the IRS
- Apply for a Federal Employer Identification Number (EIN).
- Small Business Advisor
Advice and assistance for individuals who are considering starting a business or who have already started a business.
Small Business information from the United States Government
Top FAQsI Want To...
- What does the state require to start a business?
- How can I check on my State income tax refund?
- How do I obtain a state tax number to collect sales tax?
- Where is my state tax refund?
- Who can I contact about Indiana income tax?
- Where do I go for tax forms?
- I filed my Indiana tax return. I owe, but am unable to pay at this time. What sh...
- I worked in Indiana six months. Then I worked six months in another state. How s...
Top FAQs I Want To...
- Know when I will receive my tax refund.
- File a part-year Indiana tax return.
- File my taxes as an Indiana resident while I am in the military, but my spouse is not an Indiana resident.
- Take the renter's deduction.
- Pay my tax bill in installments.
- Claim a gambling loss on my Indiana return.
- Have more time to file my taxes and I think I will owe the Department.
