Indiana Property Tax Appeal — 2026 Guide

Whether an Indiana appeal is worth it comes down to your evidence and the two-way risk.

The upside. If your January 1 assessed value is meaningfully above what comparable sales say your home would sell for, an appeal can reduce your assessed value and your tax bill, and the reduction can carry forward. Filing a Form 130 is free.

The two-way risk. Indiana is a can-increase state — the PTABOA can lower, confirm, or raise your value once you appeal. So a marginal case (where your assessment is close to market value) is a poor candidate; the downside outweighs a small potential gain.

The decision rule. File only when the comparable-sales evidence clearly supports a lower value. A free over-assessment check exists to flag exactly those cases — it compares your assessed value against comparable properties so you can decide before spending anything or filing.

A possible advantage. If your assessed value rose sharply year-over-year, Indiana law can shift the burden of proof onto the assessor for the increase — a procedural edge on top of your own evidence (see the >5% burden-shift question). It does not change the underlying value analysis.

This is the most important thing to understand before filing in Indiana.

Indiana is a can-increase state. When you appeal, the Property Tax Assessment Board of Appeals (PTABOA) reviews the assessment and can lower it, leave it the same, or raise it. The appeal puts the value on the table — it is not a one-way ratchet that can only go down.

What this means for you. File only when the comparable-sales evidence clearly supports a lower value. If your home is assessed at roughly what it would sell for — or below — appealing carries downside risk and little upside.

The appeal framework. The taxpayer appeal process, including the permitted and prohibited claims and how the PTABOA reviews your case, is governed by Ind. Code §6-1.1-15-1.1 and §6-1.1-15-2. The Indiana DLGF explains that an appeal can result in an assessment that increases, decreases, or stays the same.

How a free check helps. The point of checking first is to flag exactly the cases where the data supports a reduction — and to steer you away from filing when it doesn't. You decide whether to file; the evidence is there to inform that decision.

Indiana's year-over-year increase rule can put the assessor on the defensive.

The rule, plainly. If your property's assessed value rose more than 5% from one year to the next, the burden of proof shifts to the assessing official — they must demonstrate that the increased assessment is correct, rather than you having to prove it is wrong. The taxpayer appeal process and the claims you may raise are set out in Ind. Code §6-1.1-15-1.1.

What it changes — and what it doesn't. This is a procedural advantage about who has to prove what. It does not automatically lower your value, and it does not replace the need for good comparable-sales evidence. The strongest position is to claim the burden shift and bring solid comps.

Why it still pays to bring evidence. Even when the burden is on the assessor, your comparable-sales support is what convinces the PTABOA that the assessed value should come down. And remember the two-way risk: the board can still adjust your value in either direction, so the underlying case has to be sound.

Note. This is a copy-level explanation of a real procedural feature; confirm how your county applies it for your specific year-over-year change.

Indiana uses a June 15 appeal deadline that keys off when your Form 11 Notice of Assessment was mailed.

The standard rule. If the county mailed your Form 11 before May 1 of the assessment year, you must file your appeal by June 15 of that assessment year. If the Form 11 is mailed on or after May 1, the deadline shifts to June 15 of the year the tax statements are mailed. This framework is set by Ind. Code §6-1.1-15-1.1.

You start an appeal with Form 130. File the Taxpayer's Notice to Initiate an Appeal (Form 130, State Form 53958) with your local assessing official (township or county assessor) or county auditor. You do not need to wait for anything beyond your Form 11 — and you can initiate an appeal under the same June 15 framework even if no Form 11 was issued.

Assessment date. Indiana assesses property as of the January 1 assessment date, so your appeal challenges the value assigned for that year.

Why the deadline matters. Missing it generally means accepting your assessed value for the year. Confirm the exact date on your own Form 11 — the printed notice controls.

Before you file, know this. In Indiana the Property Tax Assessment Board of Appeals (PTABOA) can adjust your value in either direction once you appeal — it can be lowered, left the same, or raised. File only when comparable-sales evidence clearly supports a lower value.

Form 130 is the document that starts an Indiana property tax appeal.

What it is. The Taxpayer's Notice to Initiate an Appeal (Form 130, State Form 53958) is filed under Ind. Code §6-1.1-15-1.1. It tells the assessor you dispute the value on your Form 11 Notice of Assessment.

Where to file. File with your local assessing official — the township assessor where one exists, otherwise the county assessor — or the county auditor. The Indiana DLGF appeals page lists the contacts.

What to put on it. Identify the parcel, the assessed value you are appealing, and the value you believe is correct. State your basis — most homeowners argue that the fair market value is lower than the assessed figure and support it with recent comparable sales. You can attach your evidence or bring it to the informal conference.

What happens next. The assessor reviews your Form 130 and typically offers an informal conference to try to resolve the appeal. If it isn't resolved, it goes to the county Property Tax Assessment Board of Appeals (PTABOA) for a hearing and written determination (Ind. Code §6-1.1-15-2).

One caution. Once you appeal, the PTABOA can adjust your value in either direction — lower, the same, or higher. File only when your comparable-sales evidence clearly supports a reduction.

The Form 11 is the assessment notice that triggers your Indiana appeal clock.

What it is. The Form 11 Notice of Assessment of Land and Structures tells you the county's assessed value for your property for the January 1 assessment date. Not every county mails one every year, but when it does, the mailing date matters.

Why the mailing date controls. Under Ind. Code §6-1.1-15-1.1:

• If the Form 11 was mailed before May 1, your appeal deadline is June 15 of the assessment year.
• If it was mailed on or after May 1, your deadline is June 15 of the year the tax statements are mailed.

No Form 11? You may still initiate an appeal under the same June 15 framework even if no Form 11 was issued for the year.

What to check on it. Compare the assessed value on your Form 11 against what your home would actually sell for. If recent comparable sales of similar nearby homes point to a lower value, that gap is the basis for a Form 130 appeal.

Starting an Indiana appeal is free at the level most homeowners ever use.

Form 130 / PTABOA. Filing the Form 130 with your local assessing official, the informal conference, and the PTABOA hearing do not carry a filing fee for the taxpayer.

Later stages. If you escalate to the Indiana Board of Tax Review on Form 131 and ultimately to the Indiana Tax Court, court proceedings carry their own costs — but those stages are rare for residential cases.

Bottom line. For a typical homeowner, the cost of appealing is your time and the quality of your evidence, not a filing fee. That said, because Indiana's PTABOA can adjust value in either direction, the real "cost" of a weak appeal is the risk of a higher value — so file only when the comps clearly support a reduction.

An Indiana appeal is won on evidence, and comparable sales lead.

Comparable sales. Pull recent arm's-length sales of similar nearby homes — close in size, age, style, and condition — and weight those nearest the January 1 assessment date. If the comps support a value below your assessed figure, that gap is your case. Our reports build this from county assessor public records and licensed real estate data providers; every comparable can be independently verified through public records.

Record errors. Check your property record card for mistakes — wrong square footage, room or bath count, lot size, or condition grade. A factual error that inflates the assessment is often the easiest reduction to win.

Defects. Photos and repair estimates documenting issues that reduce market value (foundation, roof, water damage, deferred maintenance) can support a lower value.

How to present it. Bring it to the informal conference with the assessor first; most appeals resolve there. If it goes to the PTABOA, present the same organized evidence at the hearing.

Keep the two-way risk in mind. Because the PTABOA can raise as well as lower, the evidence needs to clearly point to a reduction before you file.

The informal conference is the first — and usually most productive — step after you file.

What it is. Once your Form 130 is filed, the local assessing official generally reviews it and offers an informal conference (or preliminary review) to discuss your evidence directly. The assessor may recommend that the appeal be approved or denied. This step is part of the appeal process under Ind. Code §6-1.1-15-1.1.

Why it matters. Many appeals are resolved here without ever reaching a formal PTABOA hearing. If your comparable-sales evidence is solid, the assessor may agree to a reduction at this stage.

How to prepare. Bring your strongest comps near the January 1 assessment date, any record-error documentation, and a clear statement of the value you believe is correct. Be specific and organized — a tidy, well-supported case is easier for the assessor to act on.

If it isn't resolved. The appeal proceeds to the PTABOA, which holds a hearing and issues a written determination (Ind. Code §6-1.1-15-2).

PTABOA stands for Property Tax Assessment Board of Appeals — the county-level body that decides Indiana property tax appeals.

When the PTABOA gets involved. After you file Form 130, the local assessing official usually attempts an informal resolution. If you and the assessor don't agree, the appeal proceeds to the PTABOA, which holds a hearing and issues a written notice of determination under Ind. Code §6-1.1-15-2.

What the hearing is like. It is an administrative hearing, not a courtroom. You present your evidence — most effectively recent comparable sales of similar nearby homes, plus any record errors (wrong square footage, room count, or condition) or documented defects. The assessor presents the basis for the assessed value. The board weighs both.

The outcome cuts both ways. The PTABOA can lower, confirm, or raise your assessed value. That is why you should file only when your comparable-sales evidence clearly supports a lower value.

If you disagree with the result. You can appeal the PTABOA's determination to the Indiana Board of Tax Review (IBTR) on Form 131, generally within 45 days of the board's notice (Ind. Code §6-1.1-15-3).

The Indiana Board of Tax Review (IBTR) is the statewide body that reviews county PTABOA decisions.

How to appeal. File the Petition to the Indiana Board of Tax Review (Form 131) under Ind. Code §6-1.1-15-3. The deadline is 45 days after the PTABOA gives notice of its determination, and you must mail a copy of the petition to the other party. The IN.gov FAQ confirms the 45-day window.

What the IBTR does. It conducts a separate review of the assessment, considering the evidence on the record and any new evidence the rules allow. Comparable-sales support remains the core of a residential case.

If you still disagree. A taxpayer may seek a rehearing before the IBTR or pursue judicial review at the Indiana Tax Court within 45 days after the IBTR gives notice of its final determination (Ind. Code §6-1.1-15-5).

Most residential appeals are resolved long before this stage — at the informal conference or the PTABOA — so the IBTR matters mainly when a meaningful value dispute remains.

Form 131 is the second-stage appeal document in Indiana.

What it is. The Petition to the Indiana Board of Tax Review for Review of Assessment (Form 131) is how you take a county PTABOA determination to the statewide Indiana Board of Tax Review (IBTR). It is governed by Ind. Code §6-1.1-15-3.

When to use it. Only after the PTABOA has issued its written determination — Form 131 is not how you start an appeal (that is Form 130). File it within 45 days of the PTABOA's notice and mail a copy to the other party.

Where to get it. Form 131 is available from the Indiana Board of Tax Review forms page.

What to include. Identify the parcel and the PTABOA determination you are appealing, state the value you believe is correct, and preserve the comparable-sales and record-error arguments you raised below. Keep your evidence organized — the IBTR review is more formal than the county hearing.

The Indiana Tax Court is the judicial step after the administrative appeal process is exhausted.

When it applies. Only after the Indiana Board of Tax Review (IBTR) has issued a final determination. Under Ind. Code §6-1.1-15-5, you may initiate an original tax appeal for judicial review within 45 days after the IBTR gives notice of its final determination. A rehearing before the IBTR is also available.

Is it worth it for a homeowner? Rarely. The Tax Court is a formal court proceeding, and the cost and effort usually outweigh the savings on a typical residential assessment. The vast majority of homeowner cases are resolved earlier — at the informal conference, the PTABOA, or the IBTR.

The practical takeaway. Build the strongest possible comparable-sales case at the Form 130 / PTABOA stage. A well-documented case early is far more cost-effective than litigating value later.

Indiana's appeal path is a clear, four-step ladder.

Step 1 — File Form 130 with the local assessing official. Submit the Taxpayer's Notice to Initiate an Appeal (Form 130) by the June 15 deadline. The assessor reviews it and usually offers an informal conference (Ind. Code §6-1.1-15-1.1). Most appeals end here.

Step 2 — PTABOA hearing. If unresolved, the county Property Tax Assessment Board of Appeals holds a hearing and issues a written determination (Ind. Code §6-1.1-15-2).

Step 3 — Indiana Board of Tax Review (Form 131). Disagree with the PTABOA? File a Form 131 petition with the IBTR within 45 days of the PTABOA's notice (Ind. Code §6-1.1-15-3).

Step 4 — Indiana Tax Court. Final step: an original tax appeal for judicial review within 45 days of the IBTR's final determination (Ind. Code §6-1.1-15-5).

Throughout, remember the PTABOA can adjust value in either direction — so the case must rest on comparable-sales evidence that clearly supports a reduction.

Indiana ties every year's assessment to a single date.

The assessment date. Under Ind. Code §6-1.1-2-1.5, tangible property is assessed as of the January 1 assessment date (for assessment years beginning after December 31, 2015). The value on your Form 11 and on your appeal reflects that January 1 snapshot.

What you are appealing. You are challenging whether the assessed value for that January 1 is too high relative to what the property is worth. For residential property the relevant question is whether recent comparable sales support a lower value than the county assigned.

Why the date matters for evidence. Comparable sales closest in time to the January 1 assessment date carry the most weight. Sales from the months around that date are the strongest support for a Form 130 appeal.

Understanding what the assessed value represents is the starting point for any appeal.

The assessment standard. Indiana assigns each property an assessed value as of the January 1 assessment date (Ind. Code §6-1.1-2-1.5). This is the number on your Form 11 and the figure your appeal challenges.

Where appeals come from. The county's mass-appraisal process estimates value across many properties at once, so individual homes can be assessed above what they would actually sell for. When recent comparable sales of similar nearby homes point to a lower value than your assessment, that difference is the core of your case.

Tax rate vs. assessed value. An appeal only affects your assessed value — your tax rate is set by local taxing units, not by your appeal. Lowering the assessed value is what lowers the bill.

The check. A free over-assessment check compares your assessed value against comparable properties so you can see the gap and decide whether the evidence supports filing — keeping in mind that Indiana's PTABOA can adjust in either direction.