Indiana Small Business Tax Guide — 2026
Income Tax Rate
3.05% flat rate + county tax (0.5% — 3%)
Sales Tax Rate
7% (no local additions)
Filing Deadline
April 15 (matches federal deadline)
Indiana Income Tax
Indiana imposes a state income tax with rates of 3.05% flat rate + county tax (0.5% — 3%). Self-employed individuals, freelancers, and sole proprietors pay this tax on their net business income in addition to federal income tax and federal self-employment tax (15.3%).
Self-Employment in Indiana
Indiana has a low flat state rate of 3.05% but adds county income taxes ranging from 0.5% to nearly 3%. Total effective rate depends on your county of residence.
Estimated Tax Requirements
Quarterly estimated payments required if you expect to owe $1,000 or more. Standard federal due dates apply.
Indiana Deductions & Credits
- Indiana starts with federal AGI
- Various add-backs and deductions for state-specific adjustments
- Renter's deduction up to $3,000
- Credit for taxes paid to other states
Business Filing Fees
LLC: $95 online formation + $32 biennial report. Corporation: $95 formation + $32 biennial report.
Key Facts About Indiana Taxes
- Indiana's 3.05% state rate is among the lowest flat rates in the nation
- County income taxes add 0.5% to nearly 3% on top of the state rate
- Simple 7% sales tax with no local variations
- Indiana has been steadily reducing its income tax rate
The Part Indiana Does Not Do For You
Whatever Indiana takes, it takes on your net profit — and net profit is just what you earned minus what you can prove you spent. The proving is on you, and it is where most of the money leaks out.
TaxTidy is where the proof lives. Photograph a receipt and it reads the vendor, the amount and the date in about three seconds, then files the expense on its Schedule C line. Nothing gets typed in twice, and nothing depends on you remembering a purchase from eight months ago.
Because Indiana wants its own return alongside the federal one, the same organized record does double duty — one set of receipts, sorted once, ready for whichever deadline comes first. Your Audit Readiness Score shows you how solid that record is before anyone else asks.
Frequently Asked Questions
What is the total Indiana income tax rate?
The state rate is 3.05% plus a county tax that varies from about 0.5% to nearly 3%. Your total rate depends on your county of residence — typically 3.5% to 6% total.
Do all Indiana counties have income tax?
Yes, all Indiana counties levy a local income tax. Rates vary significantly — check your specific county rate at the Indiana Department of Revenue website.
When are Indiana estimated taxes due?
Quarterly on April 15, June 15, September 15, and January 15. Required if you expect to owe $1,000 or more in combined state and county tax.
Official source: Indiana Department of Revenue
TaxTidy provides expense organization tools based on the most current US tax law available to it. TaxTidy is not a CPA, Enrolled Agent, or licensed tax professional. All categorizations, deductions, and tax calculations are estimates. Please verify all data for accuracy and consult a certified tax professional before filing.
Start Tracking Your Indiana Business Expenses
Your first 25 scans are on us — free for life, no card required. Enough to sort this quarter's receipts by Schedule C line and see your Audit Readiness Score for the first time.
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