Kosciusko County Property Tax Appeal, Indiana

Travis Bunn·Updated July 22, 2026

Kosciusko County is located in northeastern Indiana with Warsaw as the county seat and largest city. With a 2026 population of approximately 81,015, the county is known for its numerous lakes and serves as a hub for orthopedic manufacturing. The county's median home value of approximately $200,000 and effective tax rate of 0.86% results in property taxes that are notably lower than both state and national averages, making it an attractive location for homeowners seeking affordable property tax burdens in a growing lakeside community.

Notable cities: Warsaw, Winona Lake, Syracuse, Milford, North Webster

Median Home

$200,000

Tax Rate

0.86%

Annual Tax

$1,725

Population

81,015

On the typical Kosciusko County home, valued near $200,000 at the county’s effective tax rate of 0.86%, an over-assessment of even 10% means you are overpaying year after year until you appeal it. Here is how to find out if yours qualifies.

2026 Appeal Deadline: June 15, 2026 (if Form 11 mailed before May 1) or June 15 in the year tax statements are mailed (if Form 11 mailed after April 30)

The filing deadline depends on when your Form 11 Notice of Assessment is mailed. If the Form 11 is mailed before May 1 of the assessment year, the filing deadline is June 15 of that year. If the Form 11 is mailed after April 30 of the assessment year, the filing deadline is June 15 in the year that the tax statements are mailed. For 2026 assessments, most appeals must be filed by June 15, 2026.

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How Kosciusko County Assesses Property

100%of market value

Assessed by: Kosciusko County Assessor's Office

Assessment cycle: annual

Notices typically mailed: April-May

Indiana assesses property at 100% of market value. Properties are valued annually through a trending process that adjusts assessments based on recent sales data in your neighborhood. For example, if your home's market value is $200,000, at Indiana's 100% assessment ratio your assessed value would be $200,000, resulting in approximately $1,720 in annual taxes at the county's effective rate of 0.86% (before homestead deductions).

The Appeal Process

Appeals are heard by the Property Tax Assessment Board of Appeals (PTABOA). The PTABOA is composed of 3-5 appointed members (the County Assessor serves as a non-voting secretary). During your hearing, you will present your evidence and explain why you believe your assessment is incorrect. The board will review all evidence and issue a written determination.

Obtain and complete Form 130 (Petition to the PTABOA) for each parcel you wish to appeal. Include the assessment year and any supporting documentation such as comparable sales, appraisals, photos, or repair estimates.

Submit the completed Form 130 to the Kosciusko County Assessor's Office by mail or hand delivery before the June 15 deadline. The Assessor serves as secretary to the Property Tax Assessment Board of Appeals.

The County Assessor forwards your appeal to the Property Tax Assessment Board of Appeals (PTABOA). The board will schedule a hearing to review your evidence and issue a written determination (Form 115).

Attend your PTABOA hearing and present your evidence supporting your requested property value. Be prepared to explain why you believe the assessment is incorrect using comparable sales or other market data.

If you disagree with the PTABOA's determination, you may appeal to the Indiana Board of Tax Review (IBTR) by filing Form 131 within 45 days of receiving the PTABOA determination (Form 115).

If dissatisfied with the IBTR decision, you may further appeal to the Indiana Tax Court. You must file your appeal within 45 days of the IBTR's final determination.

Required form: Form 130 - Petition to the PTABOA

Filing Methods

mail:Kosciusko County Assessor's Office, 100 West Center Street, Warsaw, IN 46580

in-person:Kosciusko County Assessor's Office, 100 West Center Street, Warsaw, IN 46580

Evidence to Bring

Comparable sales data from similar properties in your areaRecent independent appraisal reportPhotographs showing property condition issuesRepair estimates or contractor invoices for defectsDocumentation of assessment errors or property record inaccuracies

Kosciusko County Assessor Contact

Kosciusko County Assessor's Office

Phone: (574) 372-2310

Address: 100 West Center Street, Warsaw, IN 46580

Website: https://www.kosciusko.in.gov/department/index.php?structureid=7

Online Portal: https://beacon.schneidercorp.com/Application.aspx?AppID=152&LayerID=1998&PageTypeID=2&PageID=1013

Tax Exemptions in Kosciusko County

Homestead Standard Deduction

$48,000 or 60% of assessed value (whichever is less) for 2026

Reduces the assessed value of your primary residence for tax calculation purposes

Eligibility: Property must be owner-occupied as primary residence as of December 31Deadline: January 15 (one-time filing unless ownership changes)

Supplemental Homestead Deduction

40% of remaining assessed value (after standard deduction) for properties under $600,000; 30% for properties over $600,000 (2026)

Additional automatic deduction applied after the standard homestead deduction

Eligibility: Automatically applied if you receive the standard homestead deductionDeadline: No separate application required

Supplemental Homestead Credit

10% of property tax bill, up to $300 maximum (effective 2026)

New credit that reduces property tax liability directly

Eligibility: Automatically applied to all homesteads receiving the standard homestead deductionDeadline: No application required - applied automatically

Over 65 Credit

Varies based on assessment and income

Credit for senior citizens 65 or older by December 31

Eligibility: Age 65+ by December 31, adjusted gross income under $60,000 (single) or $70,000 (joint)Deadline: January 15 (must bring copy of federal income tax return)

Disabled Veteran Credits

$350-$600 credit for 10%-90% disability; 100% exemption for totally disabled (100% rating or IU)

Property tax credits for veterans with service-connected disabilities

Eligibility: Veterans with VA-certified service-connected disabilities; must have Certificate of Eligibility from Indiana Department of Veterans AffairsDeadline: December 30, 2026 (Form 12662)

Blind/Disabled Credit

Varies based on assessment

Credit for individuals receiving disability benefits

Eligibility: Must have proof of Social Security disability benefitsDeadline: January 15

Kosciusko County Appeal Packet — $49

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Kosciusko County?

The appeal deadline in Kosciusko County depends on when your Form 11 Notice of Assessment is mailed. If your notice is mailed before May 1 of the assessment year, you must file your Form 130 appeal by June 15 of that same year. If your notice is mailed after April 30, the deadline is June 15 in the year your tax statements are mailed. For 2026 assessments, most property owners must file their appeals by June 15, 2026. Missing this deadline means you lose your right to appeal until the following year, so mark your calendar as soon as you receive your assessment notice.

How do I file a property tax appeal in Kosciusko County?

To appeal your Kosciusko County property taxes, obtain Form 130 (Petition to the PTABOA) from the County Assessor's Office or their website. Complete the form for each parcel you're appealing, including supporting documentation like comparable sales, photographs, or appraisal reports. Submit the form to the Kosciusko County Assessor's Office at 100 West Center Street, Warsaw, IN 46580, either by mail or in person before the June 15 deadline. The Assessor will forward your appeal to the Property Tax Assessment Board of Appeals (PTABOA), which will schedule a hearing and issue a written determination. Include all relevant evidence with your initial filing to strengthen your case.

What is the homestead deduction worth in Kosciusko County?

Kosciusko County homeowners receive substantial savings through Indiana's homestead deductions. For 2026, the standard homestead deduction is the lesser of $48,000 or 60% of your assessed value. If your home is assessed at $200,000, the standard deduction removes $48,000, leaving $152,000. The supplemental homestead deduction then removes an additional 40% of that remaining value ($60,800), reducing your taxable assessment to $91,200. Combined with the new automatic 10% supplemental homestead credit (up to $300), a typical Kosciusko County homeowner can reduce their effective tax burden by more than 50%. You must file once with the County Auditor by January 15 to receive these benefits.

What happens at a PTABOA hearing in Kosciusko County?

At a Kosciusko County Property Tax Assessment Board of Appeals (PTABOA) hearing, you will present your case before a board of 3-5 appointed members, with the County Assessor serving as a non-voting secretary. You'll have the opportunity to present evidence supporting your requested property value, including comparable sales, appraisals, photos, or documentation of property defects. The board members will review your evidence, may ask questions, and will also consider the assessor's valuation. After the hearing, the PTABOA issues a written determination (Form 115) either agreeing with your requested value, maintaining the original assessment, or setting a different value. You have 45 days from receiving the PTABOA determination to appeal to the Indiana Board of Tax Review if you disagree with the outcome.

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

The savings from a successful property tax appeal in Kosciusko County depend on how much you reduce your assessed value. With an effective tax rate of 0.86%, every $10,000 reduction in assessed value saves you approximately $86 annually. If you successfully reduce a $250,000 assessment to $200,000 (a $50,000 reduction), you would save about $430 per year. Over a typical 5-year period before the next major reassessment cycle, that's over $2,150 in total savings. Studies show approximately 25% of homes nationwide are overassessed by an average of $1,346 annually. Given Kosciusko County's annual trending system, appealing an incorrect assessment now establishes a lower base value for future years, multiplying your savings over time.

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

Successful Kosciusko County appeals require evidence demonstrating your property's true market value as of the assessment date. The strongest evidence includes recent comparable sales (ideally from the past 6-12 months) of similar properties in your neighborhood showing lower values. A current independent appraisal from a licensed appraiser carries significant weight with the PTABOA. Photographs documenting property condition issues, defects, or needed repairs help justify a lower value. Contractor estimates for repairs, evidence of environmental issues, or documentation of structural problems support your case. You should also verify your property record card for errors in square footage, number of rooms, or other characteristics that might inflate your assessment. Submit all evidence with your Form 130 petition.

Can I appeal my Kosciusko County property taxes online?

Kosciusko County does not currently offer online filing for property tax appeals (Form 130). You must submit your appeal by mail or in person to the Kosciusko County Assessor's Office at 100 West Center Street, Warsaw, IN 46580. However, you can view your property information and assessment details online through the county's Beacon GIS portal at beacon.schneidercorp.com. This portal allows you to research comparable properties, verify your property characteristics, and print your property record card - all useful for preparing your appeal. You can also download Form 130 from the Indiana Department of Local Government Finance website or request it from the Assessor's office by calling (574) 372-2310. Consider mailing your appeal with tracking confirmation to ensure timely filing.

When will I receive my property tax assessment notice in Kosciusko County?

Kosciusko County typically mails Form 11 Assessment Notices in the spring, with most notices reaching homeowners by mid-May. Indiana law requires annual assessment adjustments based on market trends in your neighborhood. Your notice will show both your property's market value and assessed value, along with an estimate of your tax bill. Pay close attention to the mailing date on your notice because it determines your appeal deadline - if mailed before May 1, you have until June 15 of that year to appeal; if mailed after April 30, you have until June 15 of the following year when tax statements are mailed. Keep the envelope and notice as proof of the mailing date. If you haven't received your notice by late May, contact the Assessor's Office at (574) 372-2310.

Official Resources

Kosciusko County Assessor's Office →

Official county assessor website with forms, appeals information, and property assessment resources.

Kosciusko County Property Search (Beacon GIS) →

Online property search tool to view assessment data, property records, and comparable properties.

Indiana Department of Local Government Finance →

State agency overseeing property tax administration with forms, guidance, and appeal information.

Kosciusko County Auditor - Tax Credits & Deductions →

Information on homestead exemptions, credits, and deduction applications through the County Auditor's office.

For state-wide appeal information including Indiana's assessment ratio and deadlines, see our Indiana 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 →

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← All Indiana property tax appeal info

Sources: https://www.kosciusko.in.gov/topic/index.php?topicid=41&structureid=7 | https://www.ownwell.com/trends/indiana/kosciusko-county | https://www.kosciusko.in.gov/department/index.php?structureid=7 | https://www.in.gov/dlgf/county-specific-information/kosciusko/ | https://worldpopulationreview.com/us-counties/indiana/kosciusko-county

Last verified: 2026-07-22