Indiana Income Tax Calculator 2026
Indiana taxes income at a single flat 3% rate for 2026 — estimate yours below.
Indiana's flat 3% income tax, explained
Indiana (IN) taxes income at a single flat 3% rate rather than graduated brackets, so — unlike the federal system — every dollar of Indiana taxable income is taxed at the same rate. That makes the state calculation simple, but it is separate from federal income tax and from Indiana sales tax.
What to know about Indiana tax
- Indiana applies a low flat state income-tax rate, but every county also levies its own local income tax on top.
- Because of the county add-on, two Indiana residents with the same income can owe noticeably different total state-plus-local tax.
- There are no local sales taxes — the 7% state rate is uniform statewide.
Frequently Asked Questions
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Calculate →Disclaimer
This calculator provides estimates for informational and educational purposes only. SmartTaxCalcs does not provide tax advice. Your actual tax liability may differ based on your specific situation, recent law changes, and circumstances not modeled here (e.g., AMT, NIIT, special credits). We strongly recommend consulting a qualified tax professional (CPA, Enrolled Agent, or tax attorney) before filing or making financial decisions.
Data source: IRS Revenue Procedure / state Departments of Revenue. Last data update: May 19, 2026.