Marion County Property Tax Appeal — Ohio

Rob Hartley·Updated April 3, 2026

Marion County is located in north-central Ohio, approximately 50 miles north of Columbus. The county seat is Marion, the largest city in the county with a population of approximately 36,000. As of the 2020 census, Marion County had a population of 65,359. With a median home value of approximately $98,500 and an effective property tax rate of 1.24%, Marion County homeowners pay a median annual property tax bill of $1,225, which is below the national median of $2,400. The county's property tax burden is relatively moderate compared to both state and national averages, though understanding assessment procedures and available exemptions can lead to significant savings for homeowners.

Notable cities: Marion, Caledonia, Prospect, Green Camp

Median Home

$98,500

Tax Rate

1.24%

Annual Tax

$1,225

Population

65,359

2026 Appeal Deadline: March 31, 2026

In Ohio, property owners must file appeals between January 1 and March 31 of each year to contest the prior year's valuation. For tax year 2025 assessments (payable in 2026), the deadline to file is March 31, 2026. Late filings are not accepted, and this deadline is strictly enforced across all 88 Ohio counties.

Property in Marion County, Ohio — local tax assessment and appeal guide

How Marion County Assesses Property

35%of market value

Assessed by: Marion County Auditor's Office

Assessment cycle: Sexennial reappraisal with triennial update

Notices typically mailed: Spring

In Marion County, property taxes are based on your assessed value, which is calculated by multiplying your property's market value by Ohio's 35% assessment ratio. For example, if your home's market value is $98,500 (the county median), your assessed value would be $34,475 (98,500 x 0.35), resulting in approximately $1,225 in annual taxes at Marion County's effective rate of 1.24%. Ohio law requires Marion County to conduct a full reappraisal every six years with a triennial update at the three-year midpoint to ensure property values reflect current market conditions.

The Appeal Process

Appeals are heard by the Board of Revision. After filing your appeal, the Marion County Board of Revision will schedule a hearing where you can present evidence supporting your requested value. The three-member Board, consisting of representatives from the County Auditor, County Treasurer, and County Commissioners, will review your evidence and issue a written decision within a few weeks.

Step 1: Review your property's assessed value on the Marion County Auditor's property search website (https://propertysearch.marioncountyohio.gov) to confirm your current market value and assessed value

Step 2: Gather supporting evidence including recent comparable sales of similar properties in your neighborhood, professional appraisal reports, photographs documenting property condition issues, repair estimates for any structural damage, or other documentation that supports your claim for a lower value

Step 3: Complete DTE Form 1 (Complaint Against the Valuation of Real Property) available from the Marion County Auditor's Office or downloadable from the Ohio Department of Taxation website. Fill out all required information including your opinion of market value and justification for the requested change

Step 4: Submit your completed and notarized DTE Form 1 along with all supporting evidence to the Marion County Board of Revision between January 1 and March 31, 2026. You can file online through the Board of Revision Portal, by mail, or in person at 222 W Center Street

Step 5: Attend your scheduled Board of Revision hearing if required. The Board will review your evidence and hear testimony from you, auditor staff, and any professional appraisers. Most hearings last approximately 15 minutes

Step 6: Receive the Board's written decision in the mail, typically within a few weeks of your hearing. If you disagree with the Board of Revision decision, you have 30 days to appeal to either the Ohio Board of Tax Appeals or the Court of Common Pleas

Required form: DTE Form 1 - Complaint Against the Valuation of Real Property

Filing Methods

online:Visit the Marion County Board of Revision Portal at https://bor-mcogis.hub.arcgis.com/ or through the county auditor website

mail:Marion County Auditor, Board of Revision, 222 W Center Street, Marion, OH 43302

in-person:Marion County Auditor's Office, 222 W Center Street, Marion, OH 43302 (County Building)

Evidence to Bring

Recent comparable sales of similar properties in your neighborhoodProfessional appraisal report dated near January 1 of the tax yearPhotographs documenting property condition issues or defectsRepair estimates for structural damage or deferred maintenanceListing agreements if property was listed for sale

Marion County Assessor Contact

Marion County Auditor's Office

Phone: ((740) 223-4020

Address: 222 W Center Street, Marion, OH 43302

Website: https://propertysearchhttps://.marioncountyohio.gov

Online Portal: https://bor-mcogis.hub.arcgis.com/

Hours: Monday-Friday, 8:00 AM - 4:30 PM

Tax Exemptions in Marion County

Homestead Exemption (Senior Citizens and Disabled Persons)

$29,000 exemption from market value for tax year 2025 (taxes paid in 2026)

Reduces property taxes for qualified senior or permanently disabled citizens by exempting up to $29,000 of the market value from taxation

Eligibility: Homeowners must be at least 65 years of age the year they apply, or if under 65, permanently and totally disabled. Modified adjusted gross income for 2025 must not exceed $41,000. Property must be the homeowner's principal place of residence.Deadline: December 31

Disabled Veterans Enhanced Homestead Exemption

$58,000 exemption from market value (formerly $50,000, adjusted for inflation)

Provides enhanced property tax relief for 100% disabled veterans with service-connected disabilities

Eligibility: Military veterans with 100% service-connected disability rating who own and occupy the property as their principal residence. Copy of letter from US Department of Veterans Affairs showing disability rating is required. No income limit applies.Deadline: December 31

Owner Occupancy Credit

Up to 2.5% reduction in taxes charged by qualified levies

Provides an automatic reduction in taxes for homeowners who occupy their property as their primary residence

Eligibility: Must own and occupy the home as principal place of residence on January 1 of the year filing for the reduction. Only one home per homeowner/spouse eligible unless domiciled separately.Deadline: Ongoing - apply if not currently receiving

Surviving Spouse of Public Service Officer

Varies based on property value

Exemption for surviving spouses of public safety officers killed in the line of duty

Eligibility: Surviving spouse of a public safety officer (police, fire, first responder) killed in the line of dutyDeadline: December 31

Official Resources

Marion County Auditor Property Search →

Official property search tool to look up your current assessed value, tax bills, and property records

Marion County Board of Revision Portal →

Online portal for filing property tax appeals and accessing Board of Revision information

Ohio Department of Taxation - Property Tax Forms →

Download DTE Form 1 and other official property tax appeal forms from the state tax department

Marion County Homestead Exemption Information →

Official information and application forms for homestead exemptions and property tax relief programs

Check Your Marion County Assessment

Enter your address to see if your Marion County property is overassessed.

✓ All 50 states✓ Instant results✓ $49 flat fee

Frequently Asked Questions

What is the deadline to appeal my property taxes in Marion County for 2026?

The deadline to file a property tax appeal in Marion County is March 31, 2026 for tax year 2025 assessments. In Ohio, property owners must file appeals between January 1 and March 31 each year to contest the previous year's valuation. This is a strict deadline enforced across all Ohio counties, and late filings are not accepted. If you miss the March 31 deadline, you will have to wait until the following year to file an appeal, unless there are extraordinary circumstances such as a computational error by the auditor. The appeal must be received or postmarked by March 31, 2026 to be considered valid.

How do I file a property tax appeal online in Marion County?

Marion County offers an online filing option through the Board of Revision Portal at https://bor-mcogis.hub.arcgis.com/. To file online, you'll need to access the portal and complete the DTE Form 1 (Complaint Against the Valuation of Real Property) electronically. When filing online, you do not need to have your form notarized, which is a requirement for paper filings. You should include your supporting evidence such as comparable sales, appraisal reports, or photos documenting condition issues. The online system allows you to upload these documents directly with your complaint. Alternatively, you can download forms from the Marion County Auditor's website at https://propertysearch.marioncountyohio.gov or mail/deliver paper forms to the Auditor's Office at 222 W Center Street.

What is the homestead exemption worth in Marion County, Ohio?

For tax year 2025 (taxes paid in 2026), the Marion County homestead exemption is worth $29,000 in exempted market value for qualifying senior citizens and disabled persons. This means if your home has a market value of $100,000, it would be taxed as if it were worth only $71,000, resulting in significant tax savings. The actual dollar savings vary by taxing district based on your local millage rate. To qualify, you must be at least 65 years old or permanently disabled, own and occupy the property as your principal residence, and have a modified adjusted gross income not exceeding $41,000 for 2025. Disabled veterans with 100% service-connected disability ratings receive an enhanced exemption of $58,000 with no income limit. Applications must be filed with the Marion County Auditor's Office by December 31.

How much can I save by appealing my property taxes in Marion County?

The amount you can save depends on how much your property value is reduced and Marion County's effective tax rate of 1.24%. For example, if you successfully appeal and reduce your home's market value from $120,000 to $100,000 (a $20,000 reduction), your assessed value decreases by $7,000 (at the 35% assessment ratio). This would result in annual tax savings of approximately $87 based on the county's 1.24% effective rate. Larger reductions yield proportionally higher savings. If you reduce your value by $50,000, you could save approximately $217 per year. The key is providing strong evidence such as recent comparable sales, a professional appraisal, or documentation of property defects. Even modest value reductions can add up to significant savings over the years the reduction remains in effect.

What evidence do I need for a Marion County property tax appeal?

To file a successful property tax appeal in Marion County, you need compelling evidence that your property's market value is lower than the auditor's valuation as of January 1 of the tax year. The strongest evidence includes: recent comparable sales of similar properties in your neighborhood (preferably within the last year), a professional appraisal report dated near the January 1 lien date, photographs documenting significant property condition issues or defects, repair estimates for structural damage or deferred maintenance, and listing agreements if your property was on the market. When selecting comparable sales, choose properties similar in size, age, condition, and location. The Board of Revision will not consider arguments based solely on tax amounts, percentage increases, or simple claims that your value is too high without supporting documentation. Submit all evidence when filing your DTE Form 1 or at least 5 days before your scheduled hearing.

How does Ohio's 35% assessment ratio work in Marion County?

Ohio law requires all counties, including Marion County, to assess property at 35% of its true market value for tax purposes. This means your taxable assessed value is calculated by multiplying your property's market value by 0.35. For example, if the Marion County Auditor determines your home's market value is $98,500 (the county median), your assessed value for tax purposes would be $34,475 ($98,500 x 0.35). Your actual property tax bill is then calculated by multiplying this assessed value by your total local tax rate (millage). This 35% assessment ratio is uniform across all residential property in Ohio and cannot be changed. When filing a property tax appeal, you are challenging the market value determination, not the assessment ratio. Understanding this calculation is crucial because a $10,000 reduction in market value only reduces your assessed value by $3,500.

When does Marion County reassess property values?

Marion County follows Ohio's sexennial reappraisal cycle, conducting a full reappraisal of all properties every six years, with a triennial update at the three-year midpoint. Marion County most recently completed a triennial update for tax year 2022 (payable 2023). During a full sexennial reappraisal, county staff physically inspect properties and conduct comprehensive valuations using mass appraisal techniques and recent sales data. The triennial update, occurring three years after each reappraisal, uses market trends and recent sales to make statistical adjustments to property values without individual inspections. This cycle ensures property values stay current with market conditions. Between these scheduled revaluations, individual property values may change due to new construction, additions, demolitions, or other physical changes to the property. Assessment notices are typically mailed in the spring each year, giving property owners time to review values before the March 31 appeal deadline.

What happens after I file a property tax appeal in Marion County?

After you file your property tax appeal with the Marion County Board of Revision, the clerk will schedule a hearing and notify you of the date and time, typically several weeks in advance. Before your hearing, auditor staff appraisers review your evidence and may conduct an independent analysis of your property and comparable sales. At the hearing, which typically lasts about 15 minutes, you'll present your evidence to the three-member Board of Revision consisting of representatives from the County Auditor, Treasurer, and Commissioners. You can provide oral testimony, present documents, and call expert witnesses such as professional appraisers. The auditor's staff will also present their position. After hearing all evidence, the Board deliberates and issues a written decision, usually within 2-3 weeks. If the Board reduces your value, you'll receive a tax credit or refund. If you disagree with the Board's decision, you have 30 days from the mailing date to appeal to the Ohio Board of Tax Appeals or Court of Common Pleas.

For state-wide appeal information including Ohio's assessment ratio and deadlines, see our Ohio Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

More Ohio Counties

Adams County (West Union)Allen County (Lima)Ashland County (Ashland)Ashtabula County (Jefferson)Athens County (Athens)Auglaize County (Wapakoneta)

← All Ohio property tax appeal info

Sources: https://www.co.marion.oh.us/elected_offices/auditor/taxes/faq.php | https://www.co.marion.oh.us/elected_offices/auditor/departments/homestead_exemption/index.php | https://propertysearchhttps://.marioncountyohio.gov | https://www.tax-rates.org/ohio/marion_county_property_tax | https://sdglegal.net/ohio-property-tax-deadline-2025/ | https://en.wikipedia.org/wiki/Marion_County,_Ohio | https://bor-mcogis.hub.arcgis.com/

Last verified: 2026-04-03