What is the Ohio property tax assessment ratio?

Ohio law sets taxable value at 35% of market (true) value statewide, under Ohio Revised Code §5713.03. Your county auditor must use this ratio when calculating your tax bill.

How much is the Ohio Homestead Reduction in 2026?

For tax year 2026, the general Homestead Reduction shields $29,000 of market value for qualifying owners age 65+, totally disabled, or surviving spouses age 59+ with Ohio Adjusted Gross Income under $41,000. The enhanced amount for 100% disabled veterans and surviving spouses of public-safety officers killed in the line of duty is $58,000 with no income limit. File DTE Form 105A with your county auditor.

When is the Ohio Board of Revision deadline?

Ohio's statutory Board of Revision (BOR) complaint deadline is March 31 for the prior tax year, per ORC §5715.19. Complaints are filed using DTE Form 1 with your county auditor at no cost. Late filings are rejected except in very narrow clerical-error circumstances.

How much is the Ohio real property conveyance fee?

Ohio's conveyance fee has two parts: a mandatory $1.00 per $1,000 state fee (ORC §319.54(F)(3)) and a permissive county levy of up to $3.00 per $1,000 (ORC §322.02). Most Ohio counties charge the full $4.00 per $1,000. A separate $0.50 transfer fee applies per parcel. Filed using DTE Form 100 at the auditor's office at closing.

Who qualifies for Ohio's CAUV agricultural tax break?

Ohio's Current Agricultural Use Value (CAUV) program lets actively farmed land be taxed on its agricultural value rather than its market value. Eligibility requires 10+ acres devoted exclusively to commercial agriculture, or smaller parcels with $2,500+ in gross annual income from agriculture. Apply using DTE Form 109 and renew annually with DTE 109A. Removing land from CAUV triggers recoupment of three years of saved taxes under ORC §5713.34.

Darke County Auditor Property Search & Tax Records

Darke County, Ohio · Greenville parcels, values, taxes, maps and deeds

Find Greenville Property Records and Tax Details

Search Darke County property records by owner name, street address or parcel number, then review the parcel’s appraised value, assessed value, land, buildings, sales, taxes, special assessments and mapped location.

Greenville is the county seat of Darke County—not a separate Greenville County. This guide uses the correct Darke County Auditor, Treasurer, Recorder, Engineer and Board of Revision resources for Greenville and every other Darke County community.

Get the quick answer Search step by step Check the August tax deadline

DARKE COUNTY PROPERTY DESK RECORD FLOW ACTIVE

OWNER · LAST NAME FIRST

ADDRESS · HOUSE + STREET

PARCEL · TAX DISTRICT · VALUE

LOCATE

PARCEL +
OWNER

VALUE +
BUILDINGS

TAX +
PAYMENT

MAP + DEED
NEXT ACTION

Correct jurisdiction: A Greenville, Ohio property is searched through Darke County. Do not use the Greenville County, South Carolina Auditor website or the Greene County, Ohio Auditor system.

Quick answer: use the Darke County real-estate portal

Use the official Darke County search for Greenville property ownership, parcel numbers, values, building details, sales and tax information. Use the Treasurer functions for payment, the Recorder for deeds and liens, and the Engineer or GIS map for parcel-location and legal-description research.

1 Search one field Owner, parcel number or address.

2 Open the parcel Verify the physical location and parcel ID.

3 Save the record Keep values, tax district and transfer clues.

4 Use the correct office Treasurer, Recorder, Engineer or BOR.

Property facts at a glance

Correct county Darke County, Ohio

County seat Greenville

Auditor Carol Ginn

Auditor phone 937-547-7310

Real Estate 937-547-7308

Treasurer 937-547-7365

Recorder 937-547-7390

Engineer 937-547-7375

Office hours Monday–Friday, 8 a.m.–4 p.m.

Second-half due August 14, 2026

Start with a simple search. One incorrectly entered name, street suffix or parcel digit can prevent the correct property from appearing.

Open official property search Open Auditor–Treasurer portal

Choose the exact property task

Each section solves a separate property-search or tax-record problem.

Office-routing guide

Which Darke County office handles the question?

Correct office or official tool for each property task
What you need	Use	What it provides	Important limit
Owner, address or parcel number	Auditor property search	Public parcel identification and ownership display.	Not final legal-title proof.
Appraised or assessed value	Auditor Real Estate	Land, improvements, building facts, value and tax district.	The Auditor does not post tax payments.
Current tax balance or payment	Treasurer / Payment Cart	Taxes, payment processing, delinquency and account status.	Use the live parcel balance before paying.
Deed, mortgage, lien or release	Recorder	Recorded land documents and official indexes.	A public search is not a title opinion.
Parcel map or nearby property	GIS map	Parcel-location and map context.	Not a legal boundary survey.
Legal description, split or tax map	County Engineer	Tax maps and review of deeds, lot splits and boundary descriptions.	A professional survey may still be needed.
Challenge market value	Board of Revision	Formal valuation-complaint review.	It does not directly change tax rates.
Homestead, owner occupancy or CAUV	Auditor	Eligibility guidance, applications and account updates.	Every programme has separate rules.

Efficient workflow: Find the parcel once, copy its full parcel number and reuse that identifier for taxes, maps, deeds, forms, calls and value-review questions.

Exact search workflow

Search by owner, parcel number or address

Owner-name search

Use Last Name First Name order.
Begin with the surname only.
Add the first name if too many results appear.
Try a trust, estate, LLC or business keyword.
Search the former owner after a recent sale.

Example: SMITH JOHN

Address search

Enter the house number.
Add the main street word.
Remove North, South, East or West initially.
Leave out Road, Street, Avenue or unit information.
Use the map when rural-road spelling is uncertain.

Example: 504 BROADWAY

Parcel-number search

Copy the number from a bill, deed or prior record.
Enter the complete identifier first.
Check every dash, zero and digit.
Search a shorter section only when necessary.
Verify the property location before using it.

Best exact-property method

Open and verify the matching parcel

Select only one basic search method Do not enter an uncertain owner, parcel and address together.

Review all plausible results Same-name owners may hold several Greenville or rural Darke County parcels.

Open the complete parcel page The detailed page contains far more than the initial result row.

Confirm two independent facts Match parcel number and property address, or address and building or acreage information.

Save the tax district and school district These help explain the property’s tax calculation.

Save the complete record Keep the parcel ID, values, recent sale, tax balance and deed clues.

Use Advanced Search for lists and comparisons

Advanced-search filters available on the official portal
Filter group	Available criteria	When it helps
Sales	Sale dates, price range, buyer, seller and valid-sale status.	Market research and appeal preparation.
Location	Tax district, township, school district and neighborhood.	Narrowing a broad owner or property-type search.
Land	Property class and acreage range.	Farm, vacant-land and commercial research.
Residential	Year built, living area, bedrooms, full baths and half baths.	Finding more comparable homes.

Open official Advanced Search

Search troubleshooting

No Greenville or Darke County property found?

Owner search failed Use the surname alone. Try a trust, estate, LLC, company or previous owner.

Address search failed Keep the house number and main street name but remove the suffix, direction and punctuation.

Rural parcel has no clear address Search by owner or parcel number and locate it through the GIS map.

Recently purchased property Search the seller and verify the new deed through the Recorder.

New lot or split Search the parent parcel, developer or former acreage owner.

Parcel was combined Search old parcel numbers and call the Real Estate Department.

Mailing city is misleading Confirm the physical county and township instead of relying only on the ZIP code.

Manufactured home is missing Manufactured-home taxation and registration may use a separate record process.

Real Estate call script “I am trying to identify the property at [address or road]. The current or former owner may be [name], and I have [parcel, deed or tax-bill information]. Can you confirm whether the property was transferred, divided, combined or renumbered?”

Call Real Estate: 937-547-7308 Call Auditor: 937-547-7310

Property-card decoder

Understand the parcel record and tax fields

Darke County property-record fields explained
Field	What it means	Practical next action
Parcel number	The county identifier for the real-estate parcel.	Use it for payment, map, deed and appeal questions.
Owner	The ownership name currently displayed in the Auditor system.	Verify legal ownership with the recorded deed.
Property address	The physical or situs location assigned to the parcel.	Compare it with GIS and legal-description information.
Appraised value	The estimated full market value of land and improvements.	Check property facts and relevant sales before disputing it.
Assessed value	Generally 35% of appraised value under Ohio taxation.	Use the tax district and reductions when estimating tax.
Taxable value	The value to which the effective tax calculation is applied.	Check Homestead, owner occupancy and CAUV status.
Tax district	The taxing-jurisdiction combination assigned to the property.	Select the matching district in the Tax Estimator.
Rollbacks	Applicable credits or reductions shown on the tax record.	Confirm owner-occupancy or Homestead eligibility.
Delinquent balance	Prior unpaid taxes or certified amounts connected with the property.	Contact the Treasurer before purchase or transfer.
Most recent sale	A transfer recorded in the property system with price and validity status.	Review deed type and sale validity before treating it as market evidence.
Special assessments	Charges separate from ordinary property-tax levies.	Review the type, amount and responsible agency.

Check physical facts before questioning value

Legal acreage

Property class and use

Living area

Year built and remodeled year

Style, grade and condition

Basement and finished area

Garage and outbuildings

Recent addition or demolition

Value-versus-tax warning: A percentage increase in appraised value does not automatically produce the same percentage increase in the tax bill. Effective rates, levy changes, reduction factors, credits and special assessments also matter.

Current 2026 tax action

Second-half real-estate taxes are due August 14, 2026

Current deadline August 14, 2026

Second-half 2025 real-estate tax.

Tax year 2025

Payable during calendar year 2026.

Payment office Treasurer

937-547-7365

Late or unclear balance Verify first

Request the live amount before paying.

Do not confuse the displayed annual tax with the current balance. A parcel page may show first-half, second-half, annual, paid, delinquent and special-assessment figures separately.

How to pay using the official Payment Cart

Search and open the correct parcel Match the property address and parcel number.

Open the parcel’s Tax section Review first-half, second-half, annual, delinquent and special-assessment information.

Check whether payment already posted Review tax-payment history and mortgage escrow before paying again.

Add the parcel to the Payment Cart The cart remains empty until a parcel is added from its tax section.

Open the Payment Cart Confirm that the correct property and amount were added.

Review processor charges and payment details Read the displayed total before authorization.

Save confirmation Keep the parcel number, date, amount, method and transaction confirmation.

Before paying, check these items

Correct parcel number

Correct property address

Second-half amount

Prior delinquency

Special assessments

Recent payment posting

Mortgage escrow status

HB 186 credit or account adjustment

Treasurer call script “I am calling about parcel [parcel number] at [address]. Can you confirm the current second-half balance, whether any credit or recent payment has posted, the accepted payment methods and the amount needed before August 14, 2026?”

Open official Payment Cart Call Treasurer: 937-547-7365

Tax planning

Use the 2025 Tax Estimator correctly

The official estimator is designed to estimate 2025 property taxes due and payable in 2026. It requires the 2025 appraised value, the correct tax district, property type and applicable reductions.

Copy the 2025 appraised value Do not enter assessed value unless the field specifically requests it.

Copy the exact tax district Greenville city and Greenville Township parcels may use different district codes.

Select the property type Choose residential or agricultural versus commercial or industrial.

Select applicable reductions Owner Occupancy, Homestead and Disabled Veteran options affect the estimate.

Calculate and save the assumptions Record the value, district, property type and reduction choices.

Compare with the live parcel bill An estimate is not a payment balance or receipt.

Open official Tax Estimator

GIS and legal-boundary research

Use the parcel map without treating it as a survey

Find the parcel in the property search Copy the complete parcel number.

Open the official GIS map Search the parcel number or location.

Zoom to parcel level Countywide views can hide labels and parcel details.

Compare roads and neighboring parcels Confirm that the map location matches the property record.

Use the map for preliminary context Review shape, access and nearby parcels.

Move to legal records when precision matters Use the deed, plat, tax map and professional survey.

Boundary warning: Do not place a fence, driveway, building, utility or easement using an online parcel outline alone.

When to contact the Engineer

The Darke County Engineer maintains the Auditor’s tax maps and reviews deeds, land transfers, lot splits and annexation petitions for proper boundary descriptions.

Engineer phone

937-547-7375

Office

504 S. Broadway
Courthouse, Suite 9
Greenville, OH 45331

Hours

Monday–Friday

8 a.m.–4 p.m.

Open official map page Launch GIS map

Market and appeal research

Use sales reports without choosing misleading comparisons

The official Sales Report can summarize sales within a selected date range and provides sale counts, parcel counts, price ranges, averages, medians and CSV export.

Match location

Same tax district or market area
Similar Greenville or rural setting
Comparable road access
Similar school-district influence

Match the property

Similar property class
Comparable living area and age
Similar condition and grade
Comparable acreage and outbuildings

Match the transaction

Recent sale date
Valid market sale
No family or trust-only transfer
No foreclosure or partial interest

Zero-dollar sale warning: A $0 transfer may represent a trust, estate, family or ownership-form change rather than a market sale. Check the valid-sale indicator and recorded deed.

Open official Sales Report Use advanced sales filters

Recorder workflow

Find deeds, mortgages, liens and releases

The Recorder is the official keeper of land records. The office records deeds, mortgages, mechanic’s liens, powers of attorney, federal liens and other legally important documents.

Search land records step by step

Copy clues from the Auditor parcel Save the current owner, previous owner, parcel number, transfer date and sale information.

Open the Recorder search Use the official land-record system linked by Darke County.

Search the grantor and grantee Try current and former names, both spouses, trusts, estates and companies.

Use an approximate recording date Narrow the results around a sale, refinance, lien or release.

Choose the document type Search deed, mortgage, release, lien, easement or another relevant record.

Compare legal and parcel clues Make sure the document relates to the correct property.

Contact the Recorder for older records The county identifies online land records beginning in May 1996.

Free fraud-alert service: Darke County Recorder promotes Property Fraud Alert, which can notify registered users when documents are indexed under monitored names.

Recorder

Hillary Holzapfel

937-547-7390

Email

hillaryh@co.darke.oh.us

Office hours

Monday–Friday

8 a.m.–4 p.m.

Title warning: A public Recorder search helps locate documents but is not a professional title examination or guarantee that no lien, easement or ownership issue exists.

Search official Recorder records Open Property Fraud Alert

Board of Revision

Challenge value—not simply the tax amount

The Board of Revision considers disputes involving parcel valuation and certain property-tax benefits. It does not directly change a district tax rate, the percentage increase in a bill or the statewide CAUV formula.

Check the record before filing

Land acreage and property class

Building size and style

Year built and condition

Basement and finished area

Garages and outbuildings

Recent valid sale

Comparable sales

Damage or demolition

Prepare the complaint

Confirm the assessment year Ohio property-tax bills generally use values established as of January 1 of the prior calendar year.

Use the current DTE 1 Download the active form from the Darke County forms page.

State the current and requested value Explain why the requested value is supported.

Attach direct evidence Use a sale, appraisal, comparable properties, photographs, measurements or repair estimates.

Verify the filing period The county’s general information describes January 1 through March 31 but displays a placeholder year. Confirm the applicable deadline before filing.

Keep proof of delivery Save a dated copy and receipt or submission confirmation.

Current-page caution: The county’s Board of Revision information contains a placeholder year. Do not assume an old saved deadline or form applies to the next filing cycle.

Board of Revision call script “I am reviewing parcel [parcel number] for tax year [year]. I believe the market value is incorrect because [sale, property-data error, condition or comparable evidence]. Can you confirm the current form, deadline and evidence-submission requirements?”

Open BOR forms and rules Call Real Estate: 937-547-7308

Credits, exemptions and farmland

Check owner occupancy, Homestead and CAUV

Common Darke County property-tax programmes
Programme	Main purpose	Form or action
Owner-Occupancy Reduction	Additional reduction for a qualifying principal residence.	DTE 105C
Homestead Exemption	Property-tax relief for qualifying seniors, disabled homeowners, veterans and certain surviving spouses.	DTE 105A, 105I, 105K or related form
CAUV	Values qualifying farmland based on agricultural use.	DTE 109 and required annual renewal
Damaged Property	Requests a value deduction after qualifying destruction or damage.	DTE 26
Tax Exemption	Requests exemption or remission for qualifying property and uses.	DTE 23 or applicable exemption form

CAUV eligibility routes

Ten-acre route

At least ten acres
Devoted exclusively to agricultural use
Required prior-use period
Annual compliance and renewal

Smaller-acreage route

Less than ten acres
Average annual gross agricultural income of at least $2,500
Or qualifying anticipated income
Supporting income or use evidence may be required

CAUV recoupment risk: Agricultural land converted to a nonqualifying use can be charged the prior three years of tax savings on the converted land.

Forms worth knowing

Frequently used Darke County DTE forms
Form	Use
DTE 1	Complaint against real-property valuation.
DTE 105A	Homestead application for qualifying senior, disability and surviving-spouse applicants.
DTE 105C	Owner-occupied residence reduction.
DTE 105I	Disabled-veteran and qualifying surviving-spouse Homestead application.
DTE 109	Initial CAUV application.
DTE 26	Destroyed or damaged real-property deduction.
DTE 1M	Manufactured-home valuation complaint.

Open all official forms Open CAUV resources

Manufactured-home records

Search, transfer or move a manufactured home

Manufactured homes are assessed by the Auditor and billed semiannually. Darke County identifies March 1 and July 31 as the ordinary manufactured-home tax due dates.

Manufactured-home actions and responsible offices
Action	Main requirement	Office route
Register the home	Register with the County Auditor for taxation.	Auditor
Transfer title	Auditor conveyance review and Treasurer tax-paid stamp before title transfer.	Auditor → Treasurer → Title Office
Move on a public road	Obtain a relocation notice before moving.	Auditor
Convert to real estate	Meet land-ownership, permanent-affixation, tax and title conditions.	Auditor and Title Office
Challenge value	Use DTE 1M during the applicable filing period.	Board of Revision

Relocation warning: The county states that moving a taxable manufactured home without the required relocation notice can result in a $100 penalty for the owner and the mover.

Review manufactured-home information Open manufactured-home forms

Conveyance and deed workflow

Transfer a Darke County property without avoidable delay

Prepare the correct legal document County staff cannot select or draft a deed for you.

Take the deed to the Map Office The Engineer reviews boundary descriptions, transfers and lot splits.

Complete the correct DTE form Use DTE 100 for many taxable transfers or DTE 100EX when claiming an exemption.

Take the deed to the Auditor Pay the applicable conveyance and parcel-transfer fees.

Address special property status Homestead, CAUV or manufactured-home transfers can require additional forms.

Record the accepted deed Submit the document to the Recorder with the proper fees and signatures.

Published Darke County conveyance charges

Conveyance fee

$3 per $1,000 of sale price.

Parcel transfer fee

$0.50 per parcel.

Correct deed or instrument

Complete legal description

Every parcel number

DTE 100 or DTE 100EX

DTE 101 for applicable Homestead property

DTE 102 for applicable CAUV property

Map Office review

Auditor conveyance stamp

Transfer call script “I am preparing a transfer involving parcel [number]. The transaction includes [sale, exemption, Homestead, CAUV, manufactured home, split or multiple parcels]. Can you confirm the forms, Map Office review, conveyance fee and office order?”

Open Conveyance Fee Calculator Open conveyance forms

Past-due tax research

Use the delinquency report carefully

The official delinquency report can be filtered and sorted by parcel number, taxpayer, certified year, vacant status and amount.

Privacy and accuracy warning: Do not make accusations or contact a person from a same-name delinquency result. Verify the parcel and confirm the current balance with the Treasurer.

Open the delinquency report Search or filter the official county data.

Copy the parcel number Do not rely only on a taxpayer name.

Open the complete parcel Compare the address, owner and tax information.

Review the certified year The report may contain balances from different years.

Call the Treasurer Confirm the current payoff, payment status and next action.

Open official Delinquency Report

Phone, address and visit planning

Darke County property office contacts

Contact the office that can complete the task
Office	Use it for	Contact	Hours and location
Auditor	Property records, appraisal, tax calculation, forms, Homestead, CAUV and BOR.	937-547-7310 Real Estate: 937-547-7308 Fax: 937-547-2500	504 S. Broadway Courthouse, 1st Floor Greenville, OH 45331 Monday–Friday, 8 a.m.–4 p.m.
Treasurer	Tax bills, payments, delinquency, account credits and payment posting.	937-547-7365 Fax: 937-547-7342	504 S. Broadway Courthouse, 1st Floor Greenville, OH 45331 Monday–Friday, 8 a.m.–4 p.m.
Recorder	Deeds, mortgages, liens, releases, land records and fraud alerts.	937-547-7390 hillaryh@co.darke.oh.us	504 S. Broadway Courthouse Greenville, OH 45331 Monday–Friday, 8 a.m.–4 p.m.
Engineer	Tax maps, legal-description review, deed transfers, lot splits and annexations.	937-547-7375 engineerdarke@gmail.com	504 S. Broadway, Suite 9 Greenville, OH 45331 Monday–Friday, 8 a.m.–4 p.m.

Universal property call script “I am contacting you about parcel [parcel number] at [address]. I need help with [search, value, tax payment, deed, map, exemption, appeal or transfer]. The public record currently shows [brief fact]. Which official tool, form or office should I use next?”

Nearby Ohio property guides

Check another county when the parcel is outside Darke County

Miami County

Useful for properties close to Darke County’s southeastern area or a Miami County mailing jurisdiction.

Open Miami County property-search guide

Montgomery County

Useful for broader Dayton-region property research and parcels located farther southeast of Darke County.

Open Montgomery County property-search guide

Record limitations

What online property records cannot prove

Useful for

Identifying a parcel
Reviewing value and property facts
Checking taxes and sales
Finding map and deed clues
Preparing questions for county staff

Get additional verification for

Legal ownership and clear title
Exact property boundaries
Unreleased liens and easements
Zoning and building approval
Purchase, lending or legal decisions

Ten practical answers

Darke County and Greenville property FAQs

Is there a Greenville County Auditor in Ohio?

No. Greenville is a city and the county seat of Darke County, Ohio. Property searches, values and tax records for Greenville properties are handled through the Darke County Auditor and Treasurer portal.

How do I search Darke County property by owner name?

Use the official Darke County advanced search and enter the owner in Last Name First Name order. Begin with the surname alone, then add the first name only when the results are too broad.

How do I search a Greenville Ohio property by address?

Enter the house number and main street name. Remove the direction, street suffix, punctuation and unit information if the complete address does not return a result.

When are Darke County second-half property taxes due in 2026?

The official Darke County Auditor and Treasurer portal lists August 14, 2026 as the due date for second-half 2025 real-estate taxes payable in 2026.

How do I pay Darke County property taxes online?

Open the official property record, locate the Tax section, add the parcel to the Payment Cart and then review the property, balance and processor information before submitting payment.

What is the difference between appraised and assessed value?

Appraised value is the Auditor’s estimate of full market value. Ohio assessed value is generally 35% of appraised value and is used with tax rates, reductions, credits and special assessments.

Are Darke County GIS parcel lines legal boundaries?

No. The GIS map is useful for locating parcels and reviewing nearby property, but it does not replace a recorded deed, plat, legal description or professional boundary survey.

How do I challenge a Darke County property value?

Review the parcel facts, collect evidence and file the current DTE 1 complaint with the Darke County Board of Revision during the applicable filing period. Confirm the current deadline with the Auditor before filing.

Where can I search Darke County deeds and mortgages?

Use the Darke County Recorder’s official land-record search. The county states that online land records begin in May 1996, with additional historical indexing availability subject to the Recorder’s system.

How does Darke County CAUV eligibility work?

Land generally qualifies through at least ten acres devoted to agricultural use, or through the smaller-acreage route with average annual gross agricultural income of at least $2,500. Prior agricultural use and annual filing requirements also apply.

Information checked August 6, 2026: Jurisdiction, search fields, office contacts, August 14 tax deadline, Payment Cart workflow, Tax Estimator, Sales Report, delinquency tools, forms, Board of Revision information, CAUV rules, manufactured-home requirements, conveyance fees, Engineer responsibilities and Recorder search coverage were checked against official Darke County sources.

Khushboo Bobade

Khushboo Bobade is the editor and digital publisher of CountyAuditors.org. She oversees the research and editorial process for the website, ensuring that information about county auditor offices, property records, and government resources is accurate, verified, and easy for visitors to understand.

Ohio Auditor Tools · Tax Year 2026

10 Ohio Property Tax Calculators & Auditor Tools

Built specifically for Ohio's 35% assessment ratio, current DTE forms, and 2026 Homestead, Owner-Occupancy, CAUV, Conveyance Fee, and Board of Revision rules. Every number reflects verified Ohio Department of Taxation amounts.

Homestead: $29,000 Enhanced Vet: $58,000 OAGI limit: $41,000 Assessment: 35% of market BOR filing: Free · DTE 1

Annual Tax Bill Estimator

OHIO

Applies Ohio's 35% assessment ratio plus your county's effective millage tier — the actual math your auditor uses.

County tier

Your effective rate (%)

Market (appraised) value ($)

Pick a county tier and enter your market value.

Homestead Reduction Calculator

DTE 105A

2026 Ohio Homestead: $29,000 general or $58,000 enhanced (100% disabled vet, KIA spouse). OAGI under $41,000 required for non-veteran applicants.

Exemption type

Home market value ($)

County effective rate (%)

Pick your situation and enter your home value.

Owner-Occupancy & Non-Business Credits

DTE 105C

Every Ohio owner-occupied home qualifies for the 2.5% Owner-Occupancy Credit plus the automatic 10% Non-Business Credit. Most owners don't realize these stack.

Current annual property tax ($)

Enter your annual tax to see both credit amounts.

Conveyance Fee Calculator

ORC 322

When you sell or transfer Ohio property, the auditor collects $1 state + up to $3 county per $1,000, plus $0.50 per parcel. Counties choose their rate.

Sale / consideration price ($)

County fee rate

Number of parcels

Enter sale price and pick your county rate.

CAUV Agricultural Savings

DTE 109

Ohio's Current Agricultural Use Value cuts taxable value dramatically for farmland (10+ acres, or smaller with $2,500+ annual gross income).

Market value of farmland ($)

CAUV value (from auditor) ($)

County effective rate (%)

Enter both market and CAUV values to see savings.

Mill Rate Converter

Ohio tax rates appear three ways on auditor sites: mills, percent, or dollars per $1,000. Convert between them instantly.

Convert from

Value

Enter a rate to see all three forms.

Parcel Number Cleaner

Ohio's 88 counties each format parcels differently — Franklin uses 010-123456-00, Cuyahoga uses 001-23-456, Hamilton uses 100-0001-0001-00. Auto-detects.

Parcel / APN / PIN

Paste any Ohio county parcel to format it.

35% Ratio Sanity Check

Ohio law sets taxable value at 35% of market value. If yours is significantly higher, you're a strong BOR appeal candidate.

Taxable value (from tax bill) ($)

Likely market value ($)

Enter both values to compare against Ohio's 35% target.

BOR Appeal Savings

DTE 1

A successful Board of Revision complaint typically cuts your value 10–20%. Filing is free and stays in effect until the next reappraisal.

Current annual tax ($)

Likely value reduction

Enter your tax bill and reduction estimate.

BOR Deadline Countdown

MAR 31

Ohio's statutory Board of Revision filing deadline is March 31 for the prior tax year. Miss it and you wait until next year — no extensions.

Filing deadline (default March 31)

Set your deadline to start the countdown.

Verify with the official Ohio source

These calculators use the verified 2026 Ohio Department of Taxation amounts and statutory rules. For your exact bill, exemption status, and county-specific deadlines, always confirm with your county auditor and the Ohio Revised Code:

Ohio Dept. of Taxation — Real Property DTE Forms (105A, 105C, 1, 109) ORC 5715 — Board of Revision ORC 5713 — Taxable Real Property ORC 322.02 — Conveyance Fee ORC 319.54(F)(3) — State Fee ORC 5713.30 — CAUV tax.ohio.gov — Main Portal

Estimates use Ohio's 35% statutory assessment ratio and effective tax rate tiers averaged across major Ohio counties. Your actual bill depends on local school levies, voted millage, inside vs. outside millage splits, House Bill 920 reduction factors (HB 920), and special assessments. The 2026 Homestead general amount ($29,000) and enhanced amount ($58,000) reflect HB 187 inflation indexing — your county auditor's office may show slightly different transitional figures. Nothing here is legal or tax advice. CountyAuditors.org is an independent informational directory, not affiliated with any county government.