What is the property tax appeal deadline in Indiana?

Within 45 days of the Notice of Assessment. Typical deadline month: June. Always verify the current deadline with your local assessor as dates can change.

What is the success rate for property tax appeals in Indiana?

An estimated 44% of property tax appeals in Indiana result in a reduction. This is based on Lincoln Institute research and state-reported data. Success rates are highest when appeals are supported by recent comparable sales.

2026 data Free guide Indiana

Indiana Property Tax Appeal Guide

Q: How do I appeal my property tax in Indiana?

In Indiana, file your appeal with the County Assessor / Indiana Board of Tax Review. The typical deadline is Within 45 days of the Notice of Assessment. The filing fee is $0. Start by contacting your assessor informally, then follow the formal process if unresolved.

How to challenge your property tax assessment in Indiana — deadlines, process, and a savings calculator.

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By Kiznis Studio Editorial · May 2026

June

Typical Deadline

Filing Fee

~44%

Est. Success Rate

County Assessor

Appeal Body

What This Data Tells Us About Appeals in Indiana

In Indiana, property tax appeals are filed with the County Assessor / Indiana Board of Tax Review. The typical window is Within 45 days of the Notice of Assessment, with the deadline most commonly falling in June. Filing fees reported for this state are $0, and Lincoln Institute research plus state-reported data suggest roughly 44% of appeals result in some reduction when supported by comparable sales or documented errors.

Indiana uses Trending Methodology to value properties. Present evidence of what similar properties sold for in your neighborhood. Appeals are driven by the gap between a parcel's assessed value and its actual market value — the calculator below turns that gap into an annualized dollar figure at your effective tax rate. The strongest evidence is three to five arms-length comparable sales from the past six to twelve months, plus documentation of any factual errors in the assessor's record (square footage, bedroom count, finished-basement status).

This guide is for informational purposes only and is not legal or tax advice. Deadlines, filing fees, success rates, and procedures vary by county within Indiana and can change year to year. Always verify the current rules with your local assessor's office — or a licensed attorney or tax professional — before filing. Source: Indiana Department of Local Government Finance.

Appeal Deadline

Within 45 days of the Notice of Assessment

Appeal Body: County Assessor / Indiana Board of Tax Review

Step-by-Step Appeal Process

1
Review your Notice of Assessment from the county assessor
2
File a Petition for Review of Assessment (Form 130) with the county assessor within 45 days
3
The assessor holds an informal conference — many appeals are resolved here
4
If unresolved, the appeal goes to the Indiana Board of Tax Review
5
Further appeals go to the Tax Court or Court of Appeals

Indiana-Specific Notes

Indiana uses Trending Methodology to value properties. Present evidence of what similar properties sold for in your neighborhood.

Source: Indiana Department of Local Government Finance

Assessment Savings Calculator

Estimate whether an appeal is financially worthwhile and your potential annual savings.

Current Assessed Value ($)

Estimated Market Value ($)

Effective Tax Rate (%)

Find your rate on your tax bill or the county website

Frequently Asked Questions

How do I appeal my property tax in Indiana?

File with the County Assessor / Indiana Board of Tax Review. Within 45 days of the Notice of Assessment. Start by requesting an informal review with your assessor, then follow the formal process outlined above if the issue is not resolved.

What is the Indiana property tax appeal deadline?

Within 45 days of the Notice of Assessment. The typical deadline month is June. Always confirm the exact date with your local assessor's office, as deadlines can change year to year.

Do I need an attorney to appeal property taxes in Indiana?

No. Most homeowners successfully appeal without legal representation, especially at the initial administrative level. The process is designed to be accessible to ordinary homeowners.

What evidence is most effective for property tax appeals in Indiana?

Recent sales of comparable homes (3–5 "comps" from the last 6–12 months) that sold for less than your assessed value are the strongest evidence. An independent appraisal ($400–$800) is the gold standard. Property data errors (wrong square footage, extra rooms) are also persuasive.

Disclaimer: This guide is for informational purposes only and does not constitute legal or tax advice. Appeal deadlines, procedures, filing fees, and success rates vary by county within Indiana and change over time. Always verify current rules with your local assessor's office or a licensed attorney before filing. Success rates are estimates based on Lincoln Institute of Land Policy research and state-reported data — individual results vary.

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