Hardin County, OhioProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Payment deadline
- 2025 real-estate taxes payable in 2026: first half due February 11, 2026; second half due August 5, 2026.
- Assessment appeal
- January 1–March 31, 2026 for tax year 2025 under Ohio Revised Code §5715.19; file the DTE 1 complaint with the Hardin County Board of Revision through the Auditor.
Exemptions & appeals
View exemption application (opens in a new tab)Exemption filing
Hardin County describes current-year applications from after the first Monday in January through the first Monday in June; DTE 105A identifies December 31, 2026 as the real-property application deadline.
Senior relief
Ohio Homestead Exemption: qualifying homeowners age 65+, permanently and totally disabled homeowners, and eligible surviving spouses may receive a reduction of up to $29,000 of market value for the 2026 application period; the 2026 income limit for new senior/disabled applicants is $41,000 of 2025 Ohio modified adjusted gross income. The owner must own and occupy the home as the principal residence on January 1; enhanced disabled-veteran and public-service-officer surviving-spouse programs have separate rules.
Valuation limits
No general county parcel-value cap was published. Ohio assesses real property at 35% of market value, reappraises every six years with triennial updates, and applies HB 920 reduction factors and the 10-mill limitation. House Bill 186, effective March 20, 2026, creates an Inflation Cap Credit for qualifying school-district/JVS levy growth; it is a tax credit/collection limitation, not a general cap on appraised or taxable parcel value.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.
More exemption & appeal guidance →