What is the Indiana income tax rate?

Indiana has a flat income tax rate of 3.0%. All taxable income is taxed at this same rate regardless of income level.

Does Indiana have a standard deduction?

Indiana does not offer a state standard deduction. Your state taxable income may be based on your federal adjusted gross income.

How is Indiana income tax calculated?

Indiana uses a flat tax system. After subtracting your standard deduction (if applicable), your remaining taxable income is taxed at a flat rate of 3.0%, then added to your federal tax and FICA obligations.

How do I calculate my total Indiana tax bill?

Your total tax includes federal income tax (10%–37%), Social Security (6.2% on the first $176,100), Medicare (1.45%), and Indiana state income tax. Use our free calculator above for an instant breakdown.

Indiana Income Tax Calculator 2026

Estimate your Indiana (IN) income tax for 2026. Indiana has a 3.0% flat state income tax. Enter your income below and click “Calculate Taxes” for an instant breakdown.

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Indiana Income Tax Overview

Indiana has a flat income tax rate of 3.0%. This means all taxable income is taxed at the same rate regardless of how much you earn.

Key Facts About Indiana Taxes

Indiana's 3.05% flat rate is one of the lowest flat income tax rates in the country. The state has been gradually reducing its rate from 3.4% as part of a long-term tax reduction plan.

Uniquely, Indiana counties impose their own additional income taxes ranging from 0.5% to 2.9%, so your effective rate depends on where you live. Check your county rate for accurate take-home pay calculations.

Frequently Asked Questions

What is the Indiana income tax rate?: Indiana has a flat income tax rate of 3.0%. All taxable income is taxed at this same rate regardless of income level.
Does Indiana have a standard deduction?: Indiana does not offer a state standard deduction. Your state taxable income may be based on your federal adjusted gross income.
How is Indiana income tax calculated?: Indiana uses a flat tax system. After subtracting your standard deduction (if applicable), your remaining taxable income is taxed at a flat rate of 3.0%, then added to your federal tax and FICA obligations.
How do I calculate my total Indiana tax bill?: Your total tax includes federal income tax (10%–37%), Social Security (6.2% on the first $176,100), Medicare (1.45%), and Indiana state income tax. Use our free calculator above for an instant breakdown.

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