Marion County's 2026 appeal window has closed. The next deadline is June 15 2027 — 359 days away.
Is my property over-assessed in Marion County?
You're over-assessed when the County's value is higher than what your home would actually sell for — and then you're over-paying every year until you appeal. Indiana appeals (Form 130) to the county PTABOA are due June 15 of the assessment year, or within 45 days of a Form 11 notice of assessment change, per Ind. Code §6-1.1-15-1.1.
Honest null: Marion County's assessment roll isn't onboarded into our live check yet, so we can't pull your specific over-assessment here. Compare your assessed value to recent nearby sales on the county assessor portal — if it's higher than what your home would sell for, you're over-assessed and should appeal by the deadline above.
How to appeal your Marion County assessment — and who files it for you
Pull your current assessed value from the Marion County assessor portal.
Find your market value — a recent sale of your home, or comparable nearby sales.
If the County's number is higher, file an appeal with the County Property Tax Assessment Board of Appeals (PTABOA) by June 15.
Present your comparables (and any appraisal) at the hearing.
Most owners who win use a contingency property-tax appeal firm — it costs nothing unless they cut your bill, then takes a share of the first-year saving. About 95% of over-assessed owners never appeal, so the saving is usually left on the table.
What is the Marion County appeal deadline this year?
June 15 — 359 days to the next window.
How much does it cost to appeal?
Usually a small filing fee or none; a contingency firm only charges if it wins a reduction.
I got a reassessment notice — what now?
It's the County's new market-value opinion and the start of your appeal window. Check it; appeal by June 15 if it over-states your home's value.
Will appealing raise my taxes?
In most jurisdictions an appeal can only confirm or lower your assessment for that cycle — but confirm the rules with the County Property Tax Assessment Board of Appeals (PTABOA) before filing.
Source & verification
against the official Marion County / IN deadline (in.gov · Ind. Code §6-1.1-15-1.1). These are public deadline facts, not legal or tax advice — confirm your exact date with the County Property Tax Assessment Board of Appeals (PTABOA) and consult a professional before filing.