Travis Bunn
Founder, AppealDesk · Published February 28, 2026 · Updated March 17, 2026
The 2026 filing window closed on June 15, 2026. The rule is June 15, so the next deadline is June 15, 2027. Use the time before it opens to build the evidence.
Check your property now, $49 flat fee →Start your Indiana appeal: Marion County · Allen County · Hamilton County · Lake County
Knowing your deadline is half of it. The other half is whether the county’s number is actually too high, because a deadline you meet with no case is just paperwork. Checking your number is free and takes about a minute.
Free to check. No account needed.
Updated March 2026
Indiana property tax appeals must be filed by June 15, 2026 in most counties. Some counties may have different deadlines, always verify with your local assessor.
Missing Level 1 means no Level 2 or 3.
Standard deadline: June 15, 2026
Alternative deadline: 45 days from Form 11 date (if later than June 15)
Example:
Always file by the LATER of these dates.
Must include:
Can include (but not required by deadline):
File first, add evidence later.
Knowing the date is the easy part. The date only matters if the county's number is actually too high, and nobody checks that number for you.
The number your appeal would challenge, pulled free in seconds. No account needed.
Indiana uses trending to adjust values between reassessments. Understanding your county's trending factor is crucial:
Consequences:
Example loss:
A real AppealDesk order, Monroe County
In May 2026, a homeowner in Monroe County ran the check. The county had their home on record at $446,000, while recorded sales of comparable homes supported about $338,663: an over-assessment of $107,337, worth roughly $2,197 per year if corrected. Their packet laid out the comparable sales, the forms, and the filing steps. Nobody at the county was ever going to run that check for them.
A deadline you meet with no evidence behind it is just paperwork. Comparable sales are what boards actually respond to, and pulling your county's number is where that starts.
Enter your address to pull your county record free. If it looks too high, your $49 packet gives you the comparable sales, forms, and filing steps.
Electronic Filing Available:
Mail Only:
In-Person Preferred:
Every day closer to June 15 increases risk:
File by June 5 for peace of mind.
Indiana's multi-level system rewards prepared appeals. Counties know most people file bare Form 130s without evidence.
AppealDesk provides Indiana homeowners:
Indiana counties are strict about deadlines. No extensions for:
June 16 = too late. No exceptions.
Your Form 11 is coming. Your deadline is set. File early, file correctly, save money.
108 days until June 15. Clock's ticking.