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.

Delaware County Auditor Property Search: Tax & GIS Records

Q: What are the Delaware County online property-tax payment fees?

The Treasurer lists a 2.30 percent credit-card fee with a 2 dollar minimum, a 3.95 dollar flat Visa debit-card fee and a 0.85 dollar eCheck fee.

Delaware County, Ohio · Parcel, tax, GIS, deed and value help

Find Property Records, Tax Bills and GIS Maps

Search Delaware County property records by owner name, street address or parcel number, then review ownership, market value, assessed value, buildings, transfers, tax history and mapped parcel information.

This guide explains exactly what to enter, how to fix a failed search, what each result means, how the August 17 tax deadline works, and which office handles payments, deeds, surveys, exemptions, agricultural valuation or a formal value complaint.

Read the quick answer Follow search steps Check the August 17 deadline

DELAWARE PROPERTY COMMAND PARCEL DATA CONNECTED

OWNER SEARCH · LAST NAME FIRST

ADDRESS SEARCH · NUMBER + STREET

PARCEL SEARCH · REMOVE SEPARATORS

LOCATE

OWNER +
PARCEL

GIS +
MAP

VALUE +
TAX

DEED + FORMS
NEXT ACTION

Verify the parcel before using its information. Match the property address and parcel number—not only the owner name. Auditor, GIS, Treasurer and Recorder records perform different functions and may update at different times after a sale, split, combination or correction.

Quick answer: start with one official search method

Open the Delaware County Auditor Real Estate Data Property Search, choose owner, address or parcel number, enter the simplest information you have, open the likely result and confirm the physical address plus parcel number before moving to GIS, taxes, deeds or forms.

1 Choose one search Owner, address or parcel number.

2 Enter fewer details Avoid excluding the correct result.

3 Verify two facts Match address and parcel number.

4 Use the right office Auditor, Treasurer, Recorder or BOR.

Delaware County property facts

Auditor George Kaitsa

Auditor phone 740-833-2900

Auditor hours 8:30 a.m.–4:30 p.m.

Auditor office 145 N. Union St., First Floor

Property searches Owner, address or parcel

Published parcels 98,060 parcels for 2026 billing

Second-half due August 17, 2026

Treasurer 740-833-2480

Recorder 740-833-2460

Recorder records Online from 1990 forward

The official search hub connects the three main search methods. Use GIS after identifying the parcel, the Treasurer for the current bill or payment, and the Recorder for deeds, mortgages, liens and recorded plats.

Open official property search Open Auditor homepage

Choose the property task you need

Each section below solves a specific user problem instead of sending you through an unexplained list of portals.

Office-routing guide

Which Delaware County office handles the question?

Correct office or official tool for common property tasks
Your task	Correct office or tool	What it provides	Important limit
Find owner, address, parcel or value	Auditor Property Search	Current parcel, appraisal, tax-district and transfer information.	The owner display is not a legal title opinion.
View location and nearby parcels	Auditor GIS	Parcel mapping and related tax or appraisal information.	A web map is not a boundary survey.
Pay or verify property taxes	Treasurer	Tax bills, payments, posting, escrow and eBill service.	The Auditor does not collect tax payments.
Find a deed, mortgage or lien	Recorder	Recorded documents, indexes, images and certified copies.	The search is not a complete title examination.
Challenge market value	Board of Revision	Formal DTE 1 valuation-complaint process.	The Board does not hear general tax-rate complaints.
Apply for Homestead or owner occupancy	Auditor	Applications, eligibility review and tax-credit administration.	The programme has ownership, residence and eligibility rules.
Review agricultural valuation	Auditor CAUV	Soil values, CAUV forms and agricultural-valuation information.	The public CAUV page contains older reappraisal references.
Transfer, combine or register property	Auditor Forms and Recorder	Conveyance, exemption, agricultural, combination and recording forms.	A deed may need review before recording.

Efficient workflow: Search the parcel once, save its parcel number and use that same identifier when contacting the Treasurer, Recorder, GIS staff or Board of Revision.

Official search formatting

Search by owner, address or parcel number

Choose one method for the first attempt. Adding too many details can hide the correct property when one word or number is stored differently.

Search by owner

Enter the last name first.
Run the search before adding the first name.
Add the first name when the list is too broad.
Try trust, estate, LLC or business names.
Try the previous owner after a recent sale.

Example: SMITH JOHN

Search by address

Enter the house or property number.
Add the main street name.
Leave out N, S, E or W initially.
Leave out Street, Road, Drive or Avenue.
Remove unit information if no result appears.

Example: 145 UNION

Search by parcel number

Copy the identifier from a bill, deed or previous report.
Remove spaces and dashes.
Enter the complete number first.
Try a partial parcel number when necessary.
Verify the address before using the result.

Best for exact matching

Open and verify the complete record

Run one broad search Begin with a surname, basic address or parcel number.

Compare all possible matches One owner may have a residence, vacant lot, rental or multiple subdivision parcels.

Open the full parcel page Do not rely only on the abbreviated result row.

Verify the address and parcel number Use two independent facts before relying on value, tax or ownership information.

Check the tax district Mailing-city wording does not always identify the correct township, municipality or school district.

Save the full property record Keep it with your bill, deed, purchase documents, appraisal notice or appeal evidence.

Save these property facts

Parcel number

Owner name exactly as displayed

Property and mailing addresses

Tax district

Market and assessed values

Land acreage and class

Building size and year

Transfer date and price

Deed or instrument reference

Credits and special assessments

Open owner, address and parcel searches

Failed-search recovery

No property result found?

Owner search failed Use the surname only and try a previous owner, trust, estate, LLC or business name.

Address search failed Keep the house number and main street word while removing directions, suffixes and unit details.

Parcel number failed Remove spaces and dashes, check zero versus the letter O and try a partial number.

Property recently sold Search the seller and then check the Recorder index for the new deed.

New subdivision lot Search the developer, parent parcel, subdivision name or nearby parcel in GIS.

Two parcels were combined Search each former parcel and review the Auditor’s Combination Application process.

Mailing city is misleading Verify the actual parcel location, township and municipal boundary in GIS.

Record existed previously The parcel may have been split, combined, renumbered or transferred.

Auditor call script “I am trying to locate the property at [address]. The current or previous owner may be [name], and I have [old parcel number or deed reference]. Can you confirm whether the parcel was transferred, split, combined or renumbered?”

Call Auditor: 740-833-2900 Email the Auditor

Property-record decoder

Understand each important property field

What the property record means and what to do next
Field	What it means	Practical next step
Parcel number	County identifier assigned to the property.	Use it for tax, map, deed, form and office questions.
Owner	Ownership name currently displayed by the Auditor.	Use the recorded deed when legal proof is required.
Property address	Physical or situs location associated with the parcel.	Compare it with GIS and recorded documents.
Mailing address	Address used for ownership or tax correspondence.	Do not confuse it with the physical property location.
Market value	Auditor’s opinion of fair market value.	Compare property facts, condition and valid sales.
Assessed value	Generally 35% of market value in Ohio.	Use the correct effective tax rate and credits.
Land value	Value assigned to the land rather than improvements.	Check acreage, class, homesite and CAUV status.
Building value	Value assigned to the house and other improvements.	Verify size, age, grade, condition and outbuildings.
Transfer history	Sale or ownership-transfer information connected with the parcel.	Use the Recorder for the actual recorded instrument.
Tax district	Combination of local taxing authorities applying to the parcel.	Use the district’s effective rate rather than a countywide estimate.
Special assessment	A separate charge for a project, service or improvement.	Do not treat it as an ordinary property-tax levy.

Before questioning value: Compare the record’s acreage, building size, year built, condition, basement, garage, outbuildings and property class with the actual parcel.

Map and boundary research

Use Delaware County GIS after finding the parcel

The Auditor GIS displays Delaware County real-property parcels and related appraisal or tax information. Use it to understand location and nearby parcels—not to establish a legal boundary.

Find the parcel in the normal search Copy the parcel number before opening GIS.

Open the official GIS page Use the county mapping application linked by the Auditor.

Search the parcel or property location Confirm that the displayed parcel number matches the property record.

Zoom close to the property Parcel labels and detailed layers may not display at a countywide scale.

Review nearby parcels and geographic context Use GIS to understand roads, subdivisions and surrounding ownership.

Use recorded evidence for legal work Obtain the deed, plat or survey before making a boundary-dependent decision.

GIS is useful for

Locating a parcel
Reviewing nearby ownership
Checking subdivision context
Connecting maps with appraisal data
Preparing questions for county staff

GIS cannot prove

Exact boundary corners
Legal ownership
Buildable area
Setback approval
Whether an encroachment exists

Fence and construction warning: Do not place a fence, driveway, building, utility or septic component using only an online parcel line. Obtain the deed, plat and professional survey assistance where exact boundaries matter.

Open official Delaware County GIS

Current 2026 deadline

Second-half property taxes are due August 17, 2026

First-half deadline February 10, 2026

This deadline has passed.

Extended second-half deadline August 17, 2026

Extension applies to the 2026 collection only.

After August 17 Contact the Treasurer

Request the current balance before paying.

Why the deadline changed

Delaware County delayed second-half 2025 real-property billing because Ohio House Bill 186 required implementation of an Inflation Cap Credit. The credit reduces qualifying school-district levy taxes and is applied retroactively to the 2025 real-property tax year.

Who may receive the credit: The county says many residential and agricultural parcels qualify, but not every property does. Properties in the Dublin, Westerville and Olentangy school districts were identified as exceptions in the county’s June 2026 announcement.

Already paid the full year? When the Inflation Cap Credit creates an overpayment, the county says the resulting credit will be applied to the following tax year.

What to do before paying

Search the parcel Confirm the property address and parcel number.

Open the current tax bill Do not rely on the original July deadline or an earlier estimate.

Look for the Inflation Cap Credit Check whether it appears on the parcel’s second-half bill or property information.

Check mortgage escrow Confirm whether a lender has scheduled or completed the payment.

Review the payment fee Compare card, debit and eCheck fees before authorizing payment.

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

Treasurer call script “I am calling about parcel [parcel number] at [address]. Can you confirm the current second-half amount, whether the Inflation Cap Credit applies, whether an escrow payment has posted and the approved payment methods?”

Payment methods and fees

Choose the least confusing tax-payment option

Delaware County property-tax payment costs
Payment method	Published fee	What to check
Credit card	2.30% of the transaction, with a $2 minimum	Review the displayed fee before submitting a large payment.
Visa debit card	$3.95 flat fee per transaction	Confirm that the payment is being processed as debit.
Electronic check	$0.85 flat fee per transaction	Verify every routing and account-number digit.
Payment by phone	Point & Pay processor fee applies	Call 888-891-6064 and keep the confirmation number.
Monthly escrow programme	Confirm programme terms	Designed to prepay future February and July collections through monthly bank withdrawals.
eBill	No separate delivery fee stated	Maintain the correct email address and review the spam folder.

Micro steps for online payment

Open the Treasurer’s official site Use its Pay My Taxes route rather than a sponsored or unrelated payment website.

Find the correct property bill Match the parcel number and address before continuing.

Review the current amount Confirm that the August 17 extension and any Inflation Cap Credit are reflected.

Choose the payment method Compare percentage and flat fees.

Review the final total Check the tax amount, convenience fee and parcel one final time.

Save and recheck the payment Keep the confirmation and verify posting afterward.

Open official Treasurer tax search Review payment methods and fees Set up electronic tax bills

Recorded-document research

Find deeds, mortgages, liens and plats

The Auditor record provides ownership and transfer clues. The Recorder maintains the actual recorded deeds, mortgages, IRS liens, mechanics liens, land contracts, plats, zoning resolutions and similar instruments.

Search official Recorder records

Copy clues from the Auditor record Save the owner, former owner, transfer date, parcel number and instrument reference.

Open the Recorded Document Search Read and accept the public-record and accuracy notices.

Search all reasonable name variations Enter an individual last name first and first name last.

Use the correct parties Search a deed by grantor or grantee and a mortgage by mortgagor or mortgagee.

Search by Book/Page or Instrument Number Use these identifiers when they appear on the Auditor record or another document.

Contact the office for older records Real-estate records before 1990 are available only through the Recorder’s Office.

Online coverage warning: The Recorder search contains real-estate documents from 1990 to the present, but not every recorded document since 1990 is fully computerised or imaged. The online system updates approximately every five minutes.

Current Recorder fees

Published Delaware County Recorder charges
Service	Published fee	Practical note
Basic deed or mortgage recording	$39 for the first two pages	Includes the statutory preservation surcharge.
Additional document page	$8 per page	Applies after the first two pages.
Marginal reference	$4 each	Can apply to releases, assignments or amendments.
Recorded map or plat	$40 per page	Also listed for certification of a map or plat copy.
Photocopy	$2 per page	Ask whether a plain copy is sufficient.
Certified copy	$2 per page plus $2 certification	Confirm certification requirements with the receiving party.

Property-fraud monitoring: Delaware County Recorder offers the voluntary AlertMe service. Register the name variations under which you own property to receive notice when a matching document is recorded.

Submission cutoff: Recorder hours run from 8:30 a.m. to 4:30 p.m., but the published document-submission cutoff is 4:00 p.m.

Open Recorded Document Search Review Recorder fees Open AlertMe fraud information

Value and tax calculation

Separate property value from the final tax bill

The Auditor estimates fair market value using recognised appraisal approaches. Ohio assessed value is generally 35% of fair market value, but the final bill also depends on the parcel’s effective tax rates, credits and special assessments.

Common reasons two similar properties have different bills

Different tax districts

Different school-district levies

Owner-occupancy credit

Homestead Exemption

CAUV agricultural valuation

Special assessments

Different land or building values

Inflation Cap Credit eligibility

Use the correct tax rate

Delaware County publishes rates by tax year and district. Do not multiply assessed value by a random countywide rate or compare bills without checking each parcel’s district and credits.

Property-tax reform warning: Ohio property-tax credits and reduction structures are changing. The Auditor’s current reform page explains the Inflation Cap Credit, changes to owner-occupancy credit and the planned phaseout of the non-business credit. Use the live property record and bill rather than an old percentage.

Read property-valuation methods Open rates by tax year Read current tax-reform guidance

Board of Revision

Challenge value—not the tax rate

2026 filing status: The tax-year 2025 Board of Revision filing period ended March 31, 2026. Verify the next filing period and current DTE 1 before preparing a future complaint.

The Board of Revision reviews the real-property valuation as of the January 1 tax-lien date. It does not hear a complaint simply because the tax bill, rate or CAUV amount feels high.

Prepare the complaint correctly

Review the property record Check acreage, building size, age, condition, class and improvements.

Use the current DTE Form 1 State the parcel, current value and requested value.

Attach direct evidence Use an appraisal, closing statement, purchase contract, photographs, comparable sales or income and expense records.

Sign the complaint The county warns that a missing signature after the filing deadline can cause dismissal.

File during January 2–March 31 Use mail, in-person delivery, email or fax under the current county instructions.

Prepare for the hearing Continuances are not granted merely because a party is not ready.

Watch the appeal deadline An appeal to the Board of Tax Appeals or Common Pleas Court is generally due within 30 days of the decision letter.

Evidence that addresses the actual value question

Useful Board of Revision evidence
Issue	Useful evidence	Weak approach to avoid
Recent purchase	Closing statement, purchase contract and sale-condition information.	Quoting only an online home-value estimate.
Incorrect building facts	Measurements, plans, permits and photographs.	Saying the record is wrong without identifying the incorrect field.
Poor condition or damage	Dated photographs, inspection reports and repair estimates.	General maintenance complaints without value evidence.
Comparable sales	Recent arm’s-length sales of genuinely similar properties.	Comparing only neighbouring Auditor values.
Income property	Income, expense, vacancy and capitalisation information.	Using gross rent without expenses or market context.

Board of Revision call script “I am reviewing parcel [parcel number] for tax year [year]. I believe the market value is incorrect because [sale, factual error, condition or income evidence]. Can you confirm the current DTE 1, filing dates and submission requirements?”

Open Board of Revision guidance Open current Auditor forms

Homeowner and agricultural programmes

Check Homestead, owner occupancy and CAUV

Common property-tax applications
Programme	Main purpose	Important qualification	Form
Owner-Occupancy Reduction	Tax reduction for a qualifying principal residence.	Owner and principal-residence requirements apply.	DTE 105C
General Homestead	Tax relief for qualifying senior or permanently disabled homeowners.	Age, disability, ownership, residence and income-test rules may apply.	DTE 105A and supporting forms
Disabled Veteran Homestead	Expanded Homestead relief for qualifying disabled veterans and eligible spouses.	Required service-connected disability documentation.	DTE 105I
CAUV	Agricultural-use valuation for qualifying land.	Agricultural use, filing and annual-renewal rules apply.	DTE 109 and DTE 109A
Damaged Property	Requests value adjustment after qualifying damage or destruction.	Document the date, cause and extent of damage.	DTE 26

Homestead application preparation

Proof of age or qualifying disability

Photo identification

Ownership information

Principal-residence confirmation

Applicant and spouse income information

Prior Ohio Homestead history

Verify current dollar limits. The county Homestead page describes the traditional reduction based on $25,000 of market value, but income thresholds and programme amounts can change. Confirm the current filing-year limits before relying on an older saved figure.

CAUV record warning

The county CAUV page provides soil-value and programme resources but still refers to older 2020 and 2023 reappraisal periods. Use the current forms page and call the Auditor to verify the present soil values, filing deadline, annual renewal and recoupment consequences.

Total and agricultural acreage

Agricultural-use description

Prior use history

Farm operator or lease details

Soil-value information

Planned sale or land-use change

Review Homestead programme Open CAUV values and resources Open current forms

Transfers, combinations and special records

Prepare a property transfer or record change

Delaware County’s forms page includes documents for ordinary conveyances, exempt transfers, Homestead property, agricultural property, mobile homes, rental registration and parcel combinations.

Forms for common property changes
Form or application	Use	Preparation reminder
DTE 100	Real-property conveyance fee statement of value.	Include complete sale, party and parcel information.
DTE 100EX	Claims a conveyance-fee exemption.	Identify the exact statutory exemption.
DTE 101	Conveyance involving Homestead property.	Address the existing Homestead status.
DTE 102	Conveyance of agricultural or CAUV property.	Ask about continued qualification and recoupment.
DTE 41	Mobile or manufactured-home registration.	Prepare title, ownership and location information.
DTE 55	Requests taxation of a mobile home like real property.	Confirm title, land and tax requirements.
DTE 56	Owner-occupancy reduction for a manufactured or mobile home taxed like real property.	Confirm the home is the qualifying principal residence.
Combination Application	Requests eligible adjoining parcels to be combined.	Adjoining parcels do not combine automatically after purchase.
Rental Registration	Registers applicable residential rental property information.	Keep owner and contact information current.

Prepare the deed or parcel request

Every parcel number

Current deed

Complete legal description

Grantor and grantee names

Grantee tax-mailing address

Applicable DTE forms

Survey or plat when boundaries change

Recorder fees and return envelope

Legal-description warning: Do not copy an abbreviated GIS or property-search description and use it as a complete deed description. Use the recorded legal description and obtain professional preparation or review when needed.

Transfer-preparation call script “I am preparing a change involving parcel [number]. It includes [sale, exempt transfer, combination, Homestead, CAUV, rental or manufactured-home issue]. Can you confirm the required forms and the order for Auditor and Recorder processing?”

Open transfer and property forms Review Recorder real-estate guidance

Phone, address and visit planning

Delaware County property contacts

Contact the office that controls the next action
Office	Use it for	Contact	Location and hours
Auditor	Property search, values, credits, Homestead, CAUV, forms and BOR.	740-833-2900 Fax: 740-833-2899 auditor@co.delaware.oh.us	145 N. Union St., First Floor, Delaware, OH 43015 Monday–Friday, 8:30 a.m.–4:30 p.m.
Treasurer	Bills, payments, posting, escrow, eBill and delinquency.	740-833-2480	145 N. Union St., Delaware, OH 43015 Confirm holiday and special-event hours before visiting.
Recorder	Deeds, mortgages, liens, plats, copies, recording and AlertMe.	740-833-2460 Fax: 740-833-2459	145 N. Union St., Delaware, OH 43015 Monday–Friday, 8:30 a.m.–4:30 p.m. Document cutoff: 4:00 p.m.
Board of Revision	DTE 1, evidence, hearing and value-appeal questions.	740-833-2900 auditor@co.delaware.oh.us	Auditor’s Office, 145 N. Union St., First Floor

Include this information in a call or email

Parcel number

Physical property address

Owner name

Township or municipality

Relevant tax or value year

Deed or instrument information

Form or programme name

Short factual description of the problem

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

Nearby county searches

Check another county when the parcel is missing

Postal addresses and fast-growing subdivisions can create county-boundary confusion. Confirm the county before repeatedly searching the same database.

Union County

Useful for property near the western Delaware County boundary or a Union County jurisdiction.

Open Union County property-search guide

Franklin County

Useful for parcels near the southern boundary or properties with a Columbus-area mailing address.

Open Franklin County property-search guide

Accuracy and legal limits

What an online property record cannot prove

Online records are useful for

Identifying a parcel
Reviewing value and building facts
Checking tax and transfer history
Locating maps and recorded-document clues
Preparing questions for county staff

Get additional verification for

Legal ownership and title
Exact property boundaries
Encroachments and easements
Building or zoning approval
Purchase, lending or legal decisions

Responsible-use warning: Do not identify, accuse or contact someone from a same-name property result alone. Confirm the parcel and use public property information lawfully.

Ten practical answers

Delaware County property search FAQs

How do I search Delaware County Ohio property records?

Use the Delaware County Auditor Real Estate Data Property Search. Choose owner, address or parcel-number search, enter the simplest available information and verify the result using the property address and parcel number.

How should I enter an owner name?

Begin with the last name only. Add the first name when the list is too broad. For a trust, estate, company or LLC, try the most distinctive word and test reasonable name variations.

Why can I not find a Delaware County property address?

Search using the house number and main street name. Remove directions, suffixes, punctuation and unit details. A new subdivision, recently created parcel or recent transfer may still be indexed under another owner or parent parcel.

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

The second-half 2025 real-property tax payment due in 2026 has been extended to August 17, 2026. The extension is for 2026 only.

What are the Delaware County online property-tax payment fees?

The Treasurer lists a 2.30% credit-card fee with a $2 minimum, a $3.95 flat Visa debit-card fee and a $0.85 eCheck fee.

Are Delaware County GIS parcel lines legal boundaries?

No. GIS is useful for parcel location, appraisal information and map context, but it does not replace a recorded plat, deed or professional boundary survey.

How do I find a Delaware County deed or mortgage?

Use the Delaware County Recorder Recorded Document Search. Records from 1990 to the present are available through the online system, although some older documents and images may require an office search.

How do I challenge a Delaware County property value?

File DTE Form 1 with the Delaware County Board of Revision during the January 2 through March 31 filing period. Submit evidence such as a recent appraisal, closing statement, comparable sales, photographs or income information.

What is the difference between market value and assessed value?

Market value is the Auditor’s opinion of fair market value. Ohio assessed value is generally 35% of market value and is used with effective tax rates, credits and special assessments to calculate the bill.

Who handles Delaware County property-tax payment questions?

Contact the Delaware County Treasurer at 740-833-2480 for bills, payments, posting, escrow or delinquency. Contact the Auditor at 740-833-2900 for values, parcel data, credits, exemptions and Board of Revision questions.

Information checked August 6, 2026: Property-search methods, Auditor contacts, 2026 tax deadlines, HB 186 credit guidance, Treasurer payment fees, Recorder coverage and fees, Board of Revision rules, forms, Homestead, CAUV and property-tax reform information were checked against Delaware County’s official government websites.

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.