This page helps with property tax tasks in Warren County, Ohio, including checking property details, paying a real estate tax bill, reviewing due dates, and contacting the correct county office.

The Warren County Treasurer handles real estate tax billing and payment, while the Warren County Auditor provides property search, tax relief, and valuation appeal information.

Warren County Treasurer property tax payments

The Warren County Treasurer lists online and phone payment options for real estate tax bills. To pay online, use the Warren County Treasurer online payment portal. The Treasurer also lists phone payment service at (513) 689-4800.

Before paying, use the bill information on your tax statement or property record so the payment is applied to the correct parcel or account.

  • Confirm the parcel, account, or owner information tied to the tax bill.
  • Use the online payment portal or the listed phone payment number.
  • Pay only the amount you intend to pay for the current billing period.
  • Contact the Treasurer if a mortgage company is expected to pay the bill.

Important: the Treasurer recommends paying only the first-half amount at this time for tax year 2025 because second-half bill amounts are expected to be determined by the end of June.

Real estate tax due dates and payment notes

Warren County lists separate due dates for first-half and second-half real estate taxes for tax year 2025.

Billing period Due date Note
First half tax year 2025 real estate Wednesday, February 25, 2026 The Treasurer recommends paying only the first-half amount at this time.
Second half tax year 2025 real estate Wednesday, July 29, 2026 Second-half amounts may be affected by House Bill 186.
Full-year advance payment Before second-half amounts are finalized An estimated full-year payment may create an overpayment that will not be refunded until September 2026.

For county updates and posted tax information, use the Warren County Treasurer real estate bills page.

Auditor property search for tax bill details

The Warren County Auditor property search can help you verify property information before reviewing or paying a bill. The search supports several lookup paths.

  • Owner name
  • Address
  • Parcel ID
  • Account number
  • Subdivision or lot

For owner-name searches, enter the owner’s last name. To narrow the results, add a space and the first initial or first name. The search page also shows when data was last processed.

Use the Warren County Auditor property search to look up the parcel or account information connected to a tax bill.

Email property tax billing

The Warren County Treasurer offers email tax billing for upcoming billing periods. Email addresses for the February tax billing period must be registered by December 25 before that billing period. Email addresses for the July tax billing period must be registered by May 25 before that billing period.

If an emailed bill bounces back when bills are sent, the bill is printed and mailed to the last postal address in county records. Otherwise, the registered email address remains the tax billing address until the taxpayer changes it.

Billing reminder: not receiving a tax bill does not remove the obligation to pay the tax bill when it is due under Ohio Tax Law sec. 323.13 O.R.C.

Use the Treasurer email tax billing request page to request or terminate email delivery for the next tax billing period.

Tax relief, credits, and valuation appeals

The Warren County Auditor provides property tax reduction and appeal information for qualifying property owners. These programs are separate from paying a bill through the Treasurer.

Homestead Exemption

The Homestead Exemption is a real estate tax reduction for qualifying senior citizens, disabled persons, or a surviving spouse who meet the listed requirements. The application form DTE 105A must be filed with the Auditor after the first Monday in January and received no later than December 31 each year.

Owner-Occupied Credit

The Owner-Occupied Credit applies to a homeowner’s principal residence. The homeowner must own and occupy the home as the principal place of residence on January 1 of the filing year, and only one home is eligible.

Board of Revision valuation complaints

Property owners may appeal property valuations through the Warren County Board of Revision. A DTE 1 complaint form must be filed with the County Auditor between January 1 and March 31 of the following tax year. The Board of Revision hears valuation complaints, not tax-dollar disputes.

Penalty remission and military extensions

Warren County provides an application for remission of real property and manufactured home late-payment penalties. The form is filed with the county treasurer and requires the taxpayer to attach evidence supporting the request.

Reasons listed on the form include county officer error, failure to receive a bill after a good faith effort to obtain one, serious injury or hospitalization near the due date, timely mailing, mortgage lender notice issues, or reasonable cause and not willful neglect.

The Treasurer also provides a military extension application for real estate and manufactured home taxes. The application states that it must be made no later than the last day of the sixth month in which the member’s duty terminates.

Warren County property tax contacts

Use these county contacts for tax payments, billing questions, property records, credits, exemptions, and valuation appeal questions.

  • Warren County Treasurer, mailing address: 406 Justice Drive, Lebanon, OH 45036
    Phone: (513) 695-1300
    Fax: (513) 695-2921
    Email: wctreasurer@warrencountyohio.gov
    Hours: Monday - Friday, 7:30AM to 4:30PM
  • Warren County Auditor, mailing address: 406 Justice Drive, Lebanon, OH 45036
    Real Estate phone: (513) 695-1235
    Accounting/Payroll phone: (513) 695-1101
    Licensing phone: (513) 695-1240
    Email: auditor@warrencountyohio.gov
    Hours: Monday - Friday, 7:30AM to 4:30PM

Common questions

Where can I pay Warren County property taxes online?

You can pay through the Warren County Treasurer online payment portal at online property tax payment. Phone payment service is also listed at (513) 689-4800.

What are the 2025 Warren County real estate tax due dates?

The first-half tax year 2025 real estate due date is Wednesday, February 25, 2026. The second-half due date is Wednesday, July 29, 2026.

How can I look up property information before paying?

Use the Warren County Auditor property search to search by owner name, address, parcel ID, account number, subdivision, or lot.

Who handles Homestead Exemption and Owner-Occupied Credit questions?

The Warren County Auditor handles Homestead Exemption and Owner-Occupied Credit information. The Auditor’s Real Estate phone number is (513) 695-1235.

What should I do if my mortgage company is supposed to pay the bill?

If you receive a bill but expect a mortgage company to pay it, call the mortgage company to confirm the payment will be made.