IN · 2026 appeal calendar

Indiana Property Tax Appeal Deadlines 2026.

Indiana property tax appeal deadlines and filing windows for commercial real estate. Verify with your local assessor or appeal board for the specific jurisdiction before filing.

Updated May 2026

Verify before filing. Statutory deadlines change, and many counties operate on their own schedule inside the state framework. Always confirm the current year's window with the assessor or appeal board for the specific jurisdiction before relying on a date.

2026 appeal calendar

Indiana deadlines at a glance.

State-level deadlines plus major sub-jurisdictions where the schedule diverges from the state default. Where a column says "Varies," confirm the date with the local assessor.

Month Type Event Date Details
Varies RP
Value Notices Issued
Varies Varies by county, no set schedule
Varies BPP
Value Notices Issued
Varies No value notice sent. BPP is self assessed by the taxpayer who is required to file a return by 5/15. There is only notice sent if the assessor disagrees with some aspect of the return such as the denial of an obsolescence claim.
Varies RP
Appeal Deadline
Varies 45 days from the date the value notice is mailed.
Varies BPP
Appeal Deadline
Varies 45 days from the date the assessor sends a notice to the taxpayer of a change in value.

RP = Real Property · BPP = Business Personal Property · Both = Applies to both

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