How to appeal a Marion County, IN property assessment
✓ Verified — Last verified October 24, 2026
Filing details published for Marion County. Match the notice and assessment cycle to the official instructions.
Official appeal instructionsNot tax or legal advice; confirm with your county.
Filing timing
Notice-dependent instructions
For assessments after 2018: June 15 of the assessment year if the notice was mailed before May 1; otherwise June 15 of the year the tax bill is mailed.
Official source. Verified .
Where to file
File a separate Form 130 for each parcel with the assessing official.
Official source. Verified .
Official offices
Marion County Assessor’s Office
Sources for these instructions
https://www.in.gov/dlgf/files/180309-Fact-Sheet-Appeal-Process-Fact-Sheet.pdf
June 15 of the assessment year, if the notice of assessment is mailed by the county before May 1 of the assessment year, or b) June 15 of the year in which the tax bill is mailed by the county treasurer, if the notice of assessment is mailed by the county on or after May 1 of the assessment year, whichever is first.
Verified October 24, 2026
https://www.in.gov/dlgf/files/180309-Fact-Sheet-Appeal-Process-Fact-Sheet.pdf
A taxpayer may appeal an assessment by filing a form (“Form 130”) with the assessing official. The taxpayer must file a separate petition for each parcel.
Verified October 24, 2026
https://www.in.gov/dlgf/files/180309-Fact-Sheet-Appeal-Process-Fact-Sheet.pdf
Property Tax Assessment Appeals
Verified October 24, 2026
Continue with your property
Common questions
Where do I file a Marion County assessment appeal?
File a separate Form 130 for each parcel with the assessing official.