Indiana Income Tax Calculator
Estimate your 2025 Indiana state and federal income tax. Includes Indiana tax brackets, a worked dollar example, and filing tips.
Indiana State Income Tax Overview
Indiana uses a flat state income tax rate of 3.05% for 2024, with reductions scheduled in future years as part of ongoing tax reform legislation. Indiana also allows county income taxes, which vary by county and generally range from 0.5% to 3.38%, meaning your total Indiana income tax rate depends on where you live. Indiana provides a $1,000 personal exemption per taxpayer and an additional exemption for dependents. The state also offers a $1,000 exemption for residents over 65 and for those who are blind or disabled. Indiana generally conforms to federal adjusted gross income with certain modifications.
Indiana Income Tax Rate (2025)
Indiana uses a flat income tax rate — the same percentage applies to all taxable income regardless of how much you earn.
Source: Indiana Department of Revenue
What a Indiana Resident Actually Pays: A Worked Example
| Taxable Income | $65,000.00 |
| Indiana Flat Rate | 3.05% |
| Estimated State Tax | $1982.50 |
| Effective Rate | 3.05% |
Enter Your Tax Information
Frequently Asked Questions — Indiana Income Tax
Does Indiana have a state income tax?
Yes. Indiana imposes a state income tax with a flat rate of 3.05%. This is separate from your federal income tax obligation.
What is the Indiana income tax rate for 2025?
Indiana uses a flat income tax rate of 3.05% on all taxable income, regardless of income level or filing status.
Do I have to file a Indiana state tax return?
Most full-year Indiana residents with income above the state filing threshold must file a state return. Check the Indiana Department of Revenue for current thresholds and requirements.
How accurate is this Indiana state tax estimate?
This is a planning estimate. The state result uses Indiana's published brackets but does not account for all state deductions, credits, exemptions, or local taxes. Verify with official Indiana tax forms or a qualified tax professional.
Does this calculator include federal income tax?
Yes. The results show your estimated Indiana state income tax and your federal income tax using 2025 federal brackets — your full combined picture in one place.
Where can I find official Indiana tax forms?
Official forms, instructions, and filing guidance are available at the Indiana Department of Revenue.
Understanding Your Indiana Tax Estimate
Your results show both your estimated federal income tax and your estimated Indiana state income tax as a combined picture. Here is how to read them and what to do next.
Federal vs. State Tax: Two Separate Bills
Federal income tax is owed to the IRS and is the same rate schedule for all U.S. residents regardless of where you live. Indiana state income tax is a separate obligation paid to the Indiana Department of Revenue. You file two separate returns — one federal (Form 1040) and one state — though they are often prepared together using tax software.
How the Estimate Is Calculated
This calculator applies the 2025 federal tax brackets to your taxable income (gross income minus the standard or itemized deduction), then applies Indiana's published state brackets to estimate your state liability. The result is a planning estimate — not a filed return. It does not account for all credits, deductions, or individual circumstances that could change your actual bill.
Marginal Rate vs. Effective Rate
Your marginal rate is the rate on your last dollar of income — it is the highest bracket you reach, not what you pay on all income. Your effective rate is your total tax divided by gross income, and is almost always meaningfully lower. For example, a single filer earning $75,000 may be in the 22% federal bracket but pay an effective federal rate of only 14-15%. The same principle applies to Indiana state brackets.
3 Ways to Reduce Your Indiana Tax Bill
- Maximize pre-tax retirement contributions. Traditional 401(k) and IRA contributions reduce your federal taxable income. Many states, including Indiana, also exclude these contributions from state taxable income, reducing both bills simultaneously.
- Claim all applicable deductions and credits. Many states offer credits for property taxes, dependent care, education, and energy-efficient home improvements that are separate from federal credits. Check the Indiana Department of Revenue for Indiana-specific credits.
- Consider the standard vs. itemized deduction. Some states allow itemized deductions even if you take the federal standard deduction — or have their own standard deduction amounts that differ from federal. Checking the state-specific rules can sometimes reveal additional savings.
What to Do After Getting Your Estimate
- If you expect to owe money, consider adjusting your W-4 withholding or making a state estimated tax payment to avoid a balance due at filing time.
- If you are self-employed, your SE tax is separate — use our self-employment tax calculator to estimate that additional obligation.
- To verify your numbers, use the official Indiana tax forms or consult a qualified tax professional familiar with Indiana tax law.
Disclaimer: Estimates for educational purposes only. State tax results are approximations based on published bracket data and do not account for all deductions, credits, exemptions, local taxes, or individual situations. Not tax, legal, or financial advice. Consult the Indiana Department of Revenue or a qualified tax professional for guidance specific to your situation.