Franklin County filing dates
Key dates for Ohio property valuation complaints in Franklin County. We recheck the county's official pages before publishing changes — last verified 2026-10-01. Always confirm current dates with the county before you file.
Informal review period (Sept 2026)
ClosedDate not yet posted
The September 2026 informal review period has ended.
Official county sourceBoard of Revision filing season opens
Awaiting confirmationDate not yet posted
County expects the next filing season to reopen in November 2026; exact opening date not yet posted.
Official county sourceFinal values and notices mailed
UpcomingDate not yet posted
Final values and notices expected by mid-December 2026.
Official county sourceComplaint deadline (tax year 2026)
Upcoming2027-03-31
County lists March 31, 2027 as the complaint deadline for tax year 2026.
Official county sourceTax year vs. filing year
Ohio complaints are filed for a tax year — the year the value was set — but you file during the following filing season. For tax year 2026, Franklin County lists a complaint deadline of March 31, 2027. When you gather evidence, use sales and records from around the county's valuation date for that tax year.