Indiana Income
Tax Rates & Rules
Indiana has a flat state income tax rate of 3%, applied to all taxable income regardless of income level.
Indiana Flat Income Tax Rate
Indiana tax year rates, most recently confirmed by the state Department of Revenue.
All Filing Statuses
| Taxable Income | Rate |
|---|---|
| All taxable income | 3% |
Indiana applies a single flat rate to all taxable income, regardless of income level or filing status.
Sources: Indiana DOR — Individual Income Tax (state rate; county tax additional, not shown). Last verified: August 14, 2026.
How Indiana Income Tax Works
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Frequently Asked Questions
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