How to Appeal Your Marion County Property Tax Assessment Before the Deadline
Marion County reassessment notices have started hitting mailboxes. The 45-day window to file a PTABOA petition is already running for notices already received. Here's the complete process from read…
Marion County reassessment notices have started hitting mailboxes. The 45-day window to file a PTABOA petition is already running for notices already received. Here’s the complete process from reading your notice to walking into the hearing room.
If you opened a Form 11 Notice of Assessment Change recently and felt a jolt of sticker shock, you’re not alone. Marion County’s reassessment hit hard in neighborhoods with heavy buyer activity over the past three years: Fountain Square, Bates-Hendricks, Irvington, Broad Ripple, Meridian-Kessler. Even homeowners in slower-appreciating parts of the city are wondering whether their numbers are right.
What you won’t easily find anywhere is a plain-English explanation of what to actually do about it. The Assessor’s site has forms. Law firm pages have lead-gen copy. Nobody walks you through it like a neighbor who happens to be a property tax attorney would.
This is that walkthrough.
Your 45-Day Clock Started the Day Your Notice Was Mailed
Under Indiana Code 6-1.1-15-1, a Marion County property owner has 45 days from the date printed on their Form 11 to file a petition with the Property Tax Assessment Board of Appeals. Here’s the detail most people miss: that date is not a universal countywide deadline. Marion County mails Form 11 notices on a rolling, township-by-township basis. Your neighbor two doors down may have a deadline two or three weeks different from yours, depending on which township your parcel falls in. Marion County’s nine townships are Center, Decatur, Franklin, Lawrence, Perry, Pike, Warren, Washington, and Wayne.
Find your Form 11. The mailing date is printed at the top of the notice. Write it down, count forward 45 calendar days, and put that date on your calendar right now — before you read another word of this article. I mean before. Do it.
If you can’t locate your Form 11, look up your current assessed value on the Marion County Assessor’s Property Report Card at assessor.marionindiana.us. But the mailing date for the 45-day calculation is on the paper notice. If you genuinely can’t find it, call the Assessor’s office at 317-327-4907 and ask them to confirm when yours was mailed.
Before You File Anything, Check Whether Your Assessment Is Actually Wrong
Not every high assessment is a wrong assessment. Before you invest time — and possibly money — spend twenty minutes answering one question: is your assessed value higher than what your home would realistically sell for as of January 1, 2026?
Indiana property tax rests on market-value-in-use as of January 1 of the assessment year. If a buyer would genuinely pay more than your assessed value, your appeal math isn’t in your favor. A PTABOA board will tell you exactly that, and they won’t soften it.
Go to assessor.marionindiana.us and use the Property Report Card tool. Search your address. You’ll see your Notice of Assessment, the property characteristics the Assessor used to reach that number — square footage, year built, number of bathrooms, construction grade, condition classification — and the assessed value itself. Read the characteristics. Does the Assessor’s record show three full bathrooms when you have two and a half? Does it show 1,800 square feet when your home is 1,600? Is the condition listed as “Good” when the mechanicals are aging and the roof needs replacement?
Data errors are among the cleanest grounds for a reduction, and they’re more common than people expect. Even if the data looks accurate, the assessed value may simply be too high relative to what comparable homes in your township were actually selling for last year. That’s where comparable sales come in.
How to Pull Your Own Comparable Sales From the Assessor’s Site
Most homeowners skip this because it sounds complicated. It’s not complicated. It requires patience, not expertise.
From assessor.marionindiana.us, find the Sales Disclosure database — the public record of home sales filed with the Assessor when properties change hands. You want sales that meet Indiana’s standard for comparable evidence: closed within roughly 12 months prior to January 1, 2026 (so January 1, 2025 through December 31, 2025), within the same township as your property, in the same property class (residential), and similar in size — within about 20 percent of your square footage — and similar in age and construction type.
Filter carefully. If your property is in Lawrence Township, don’t pull Washington Township sales. The township boundary is the relevant geographic unit for comparable sales analysis in Indiana PTABOA proceedings. Using citywide comps instead of township-specific ones is the most common DIY mistake, and an experienced Assessor’s representative will point it out the moment you hand over your grid. Don’t give them that.
What you’re building is simple: a set of sales of comparable homes that closed for less than your assessed value. Each row of your grid should show the address, sale date, sale price, square footage, year built, and price per square foot. If the median price per square foot of your comparable sales, multiplied by your home’s square footage, produces a number meaningfully below your assessed value, you have the foundation of a case.
Keep your comps clean. Exclude short sales, foreclosures, estate sales, or anything that doesn’t look like an arm’s-length market transaction. The Assessor’s office will flag distressed sales if you try to use them. Print your grid. Bring it on paper to every step of the process that follows.
Try the Informal Review First — Most Homeowners Never Do
Before a formal PTABOA hearing, you have an option most coverage ignores: an informal review directly with the Assessor’s office.
Call 317-327-4907 and ask to request an informal review of your assessment. You’ll speak with a staff appraiser who can look at your comparable sales, review your property characteristics, and often offer a corrected assessment without a formal hearing ever being scheduled. A real share of Marion County residential appeals resolve entirely at this stage.
One thing to understand: the informal review and the Form 130 filing process are separate. File Form 130 before your 45-day deadline regardless. The informal review doesn’t stop the clock, and if it doesn’t produce a satisfactory result, you want your formal petition already in the queue.
Come to the informal review the same way you’d come to a hearing: printed comp grid, Property Report Card with any data errors flagged, documentation of condition issues. The appraiser you speak with isn’t your adversary. They carry a high volume of properties and can’t investigate every one on their own. Show up with organized, credible evidence and you’re much more likely to walk out with a resolution than someone who calls to complain without anything on paper.
How to File Form 130 Before Your Deadline
Form 130, the Petition for Review of Assessment, is the document that initiates your formal PTABOA appeal. Don’t wait until the last week to file it.
Download the current version from assessor.marionindiana.us or from the Indiana Department of Local Government Finance at in.gov/dlgf. The form asks for your parcel number (on your Form 11 and on your Property Report Card), your name and address, the assessed value you’re contesting, and the value you believe is correct.
In the grounds section, be specific. Something like: “Assessed value exceeds market value as evidenced by comparable sales” or “Property characteristics in Assessor’s record are inaccurate — square footage recorded as 1,800, actual square footage is 1,600.” This isn’t the place to vent. One focused sentence does more than a paragraph of frustration.
Marion County accepts Form 130 by multiple methods. Confirm current options directly with the Assessor’s office at 317-327-4907 before filing — accepted methods and contact details can change:
In person at Room 1040 of the City-County Building, 200 E. Washington St., Indianapolis, 46204
By mail to Marion County Assessor, Room 1040, 200 E. Washington St., Indianapolis, IN 46204 (postmark must fall within your 45-day window)
By email — verify with the Assessor’s office whether this is currently accepted and confirm the correct address before sending
Get a confirmation of receipt. Mail it certified. If you email it, ask for a reply confirming they received it. A Form 130 that didn’t reach the right desk by the right date is treated as if it was never filed. There are no exceptions to that.
What to Bring to the Hearing and What to Expect in the Room
If the informal review doesn’t resolve your case, you’ll eventually receive a hearing notice from the PTABOA scheduling coordinator. Hearings for residential petitions take place at the City-County Building, 200 E. Washington St. Confirm the specific room with the Assessor’s office or scheduling coordinator when your notice arrives — room assignments shift.
Hearings typically run 15 to 30 minutes. Testimony is given under oath, though there are no strict rules of evidence. You present first. An Assessor’s representative responds. The three-member PTABOA board asks questions and deliberates. The atmosphere is administrative, not adversarial — but don’t let that make you casual about preparation. The board’s evidentiary standard is real.
Your comparable sales grid is the most important thing in the room. Recent, township-specific, arm’s-length sales of similar homes — all closing for less than your assessed value — form the spine of a strong residential appeal. Organize it so a board member can read it without effort: address, sale date, sale price, square footage, price per square foot, notes on similarity to your property. If someone has to squint at it, you’ve already lost ground.
If the Assessor’s record contains data errors, bring the documentation: your deed, a licensed appraisal, county permit records showing actual square footage. The board will weigh a clean data-error argument quickly if you can back it up.
Condition issues that weren’t visible from the street often aren’t captured in the Assessor’s mass-appraisal model. A contractor’s written estimate for a failing HVAC system, a roof in need of replacement, or a foundation problem can support a downward adjustment. A recent home inspection report works too.
What won’t move anything: what you paid for the home years ago, what you think it’s worth based on personal attachment, what Zillow says. Zillow estimates are not comparable sales. The board’s job is to determine whether the assessed value is accurate as of January 1, 2026 — not whether your tax bill feels fair. Save that conversation for your city-county councilmember.
Do You Need an Attorney or a Tax Representative?
For most residential properties, self-representation is both common and workable. Pull the comparable sales, organize your evidence, show up on time. That’s most of the job.
The math shifts at higher values. For residential assessments above roughly $500,000, the potential savings from a successful appeal are large enough that a professional’s fee is easy to justify. For commercial property, get professional help. Commercial assessments involve income capitalization methodology that requires real expertise — a well-organized spreadsheet won’t substitute for it.
Most Marion County residential representatives work on contingency: typically 30 to 50 percent of first-year tax savings from any reduction they secure. Before engaging anyone, ask how they structure fees. Some practitioners handling straightforward residential cases charge flat fees in the $300 to $600 range instead. Knowing the fee structure before you sign anything lets you judge whether the realistic reduction on your property justifies the cost. This is also a situation where free and low-cost legal help in Indianapolis can narrow down whether you need a paid specialist at all. Firms with active Marion County property tax practices include Faegre Drinker and Dentons Bingham Greenebaum, along with a number of smaller representatives who focus primarily on residential contingency work. Our legal & finance coverage goes deeper on the range of professional resources available to Marion County residents.
What Are the Realistic Odds?
Statewide, roughly 40 to 60 percent of filed residential appeals result in some reduction — but that number includes many cases filed without real evidence that get dismissed or denied outright. Well-prepared appeals do better than the aggregate suggests. Marion County-specific data for the current cycle won’t be fully compiled until appeals resolve; the Assessor’s office can give you current figures if you ask directly.
Appeals are strongest in neighborhoods where rapid appreciation has created gaps between the Assessor’s mass-appraisal model and actual market comparables. Fountain Square, Bates-Hendricks, Irvington, Broad Ripple, and Meridian-Kessler saw some of the sharpest increases in the current cycle. For a ground-level look at what those values are actually doing, what is actually selling in Fountain Square and who is getting there first shows the sales activity driving these assessments. In those neighborhoods, a homeowner who pulls the comparable sales carefully and presents them cleanly has a real case.
On the Far Eastside and Far Westside, slower appreciation means assessments are often already at or below market value. The comparable sales math in those areas frequently doesn’t support a reduction, and filing without running those numbers first is likely to produce a denial and a wasted afternoon.
When appeals succeed, the reduction is the difference between the assessed value and what the comparable sales support — not a round number, rarely everything the homeowner asked for. Partial reductions are common for cases with solid but not overwhelming evidence, which describes most residential appeals honestly.
If You Miss the PTABOA Window
If your Form 11’s 45-day window has passed and you never filed Form 130, the Indiana Board of Tax Review is not a first-step remedy. You can’t bypass PTABOA because you missed your initial deadline. The 45-day window under IC 6-1.1-15-1 is a jurisdictional requirement. Missing it closes the formal appeal path for that assessment year. There is no back door.
This is why filing Form 130 before your deadline is almost always the right move — even if your evidence is still coming together, even if you’re not sure your case is strong. You can withdraw a petition. You cannot file one after the deadline.
If you filed Form 130 and the PTABOA ruling goes against you, you have 45 days from that final determination to petition the Indiana Board of Tax Review. The IBTR conducts a more formal review with briefing schedules and a written record. Professional representation becomes substantially more advisable at that stage. If the IBTR rules against you, the next step is the Indiana Tax Court at 115 W. Washington St. — full legal proceedings, rarely cost-effective for residential properties unless the assessment is far enough off that potential savings justify what can become a multi-year process.
Use your PTABOA opportunity. It’s the most accessible stage, the fastest, and the one where you can do the most yourself.
Key Contacts and Resources
Marion County Assessor’s Office Phone: 317-327-4907 Website: assessor.marionindiana.us In person: Room 1040, City-County Building, 200 E. Washington St., Indianapolis, IN 46204 (Property Report Card lookup, Sales Disclosure database, Form 130 filing)
Marion County PTABOA Scheduling Coordinator Contact through the Marion County Auditor’s Office Phone: 317-327-4444 Website: auditor.marionindiana.us
Indiana Department of Local Government Finance (DLGF) Website: in.gov/dlgf (Form 130 download, property tax forms and instructions)
Indiana Board of Tax Review (IBTR) Website: in.gov/ibtr Phone: 317-232-3765 (Secondary appeals after PTABOA determination)
Indiana Tax Court 115 W. Washington St., Indianapolis, IN 46204 Website: in.gov/judiciary/tax
Statutory authority: Indiana Code 6-1.1-15-1 governs the 45-day petition window and the PTABOA appeal process.
Note to readers: Submission methods for Form 130, specific hearing room assignments, Marion County-specific appeal resolution data for the current cycle, and the exact 2026 Form 11 mailing timeline should be confirmed directly with the Assessor’s office at 317-327-4907 before relying on them for filing decisions. Procedures are current as of publication but can change.
