AppealDesk

Boone County Property Tax Appeal, Indiana

Travis BunnTravis Bunn·Updated July 22, 2026

Boone County is located northwest of Indianapolis in central Indiana, with Lebanon as the county seat and Zionsville as the largest city. With a 2025 population estimated at approximately 80,689 residents, the county features a median home value of $341,800 and an effective property tax rate of 0.80%, lower than the national average but slightly higher than the state average. Property tax appeals matter here because homeowners in this growing suburban county pay a median annual tax bill of $2,725, significantly above the Indiana state median of $1,496, making proper assessments critical to ensuring fair taxation.

Notable cities: Lebanon, Zionsville, Whitestown

Median Home

$341,800

Tax Rate

0.80%

Annual Tax

$2,725

On the typical Boone County home, valued near $341,800 at the county’s effective tax rate of 0.80%, 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

The Boone County Assessor's Office mails Form 11 assessment notices on April 28th and Form 11A notices on April 29th each year. Taxpayers have until June 15, 2026 to file an appeal for the 2026 assessment year.

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White Indiana house surrounded by trees on a sunny day. Boone County appeal guide.

How Boone County Assesses Property

100%of market value

Assessed by: Boone County Assessor's Office

Assessment cycle: annual

Notices typically mailed: late April (Form 11s mailed April 28-29)

Indiana assesses property at 100% of market value, meaning your assessed value equals the fair market value of your home. For example, if your home's market value is $341,800 (the county median), your assessed value would be $341,800. At Boone County's effective tax rate of 0.80%, this would result in approximately $2,734 in annual property taxes before any deductions or exemptions are applied.

The Appeal Process

Appeals are heard by the Property Tax Assessment Board of Appeals (PTABOA). After filing, you'll first attend an informal preliminary hearing with the Assessor's office to discuss your evidence. If no agreement is reached, the case proceeds to a formal PTABOA hearing held on Wednesdays where you present your evidence to a board of appeals members.

1

Review your Form 11 or Form 11A assessment notice received in late April and verify all property details including square footage, number of bathrooms, outbuildings, and basement finish.

2

Gather supporting evidence such as recent comparable sales of similar properties in your area, photos documenting property condition issues, repair estimates, or a recent independent appraisal showing a lower value.

3

File your appeal by June 15, 2026 by emailing assessmentappeal@co.boone.in.us or delivering it in person or by mail to the Assessor's Office at 115 Courthouse Square, Lebanon, including all supporting documentation.

4

Attend the preliminary hearing with the Assessor's Office, who will contact you via email or phone to discuss their findings and attempt to reach an agreement on your property's value.

5

If no agreement is reached at the preliminary hearing, your appeal automatically moves forward to the Property Tax Assessment Board of Appeals (PTABOA), which meets on Wednesdays and will mail you a notice with your scheduled hearing time.

6

Present your evidence at the PTABOA hearing and await Form 115 with the board's decision, which will be mailed to you after the hearing.

7

If unsatisfied with the PTABOA decision, file Form 131 Petition for Review with the Indiana Board of Tax Review (IBTR) and send a copy to the Boone County Assessor.

8

After an IBTR decision, you may further appeal to the Indiana Tax Court if you disagree with the outcome.

Required form: No specific form required - appeals can be submitted via email, mail, or in person with supporting documentation

Filing Methods

email:assessmentappeal@co.boone.in.us
mail:Boone County Assessor's Office, 115 Courthouse Square, Lebanon, IN 46052
in-person:First floor, southwest corner of Boone County Courthouse, 115 Courthouse Square, Lebanon, IN 46052

Evidence to Bring

Comparable sales data showing recent sales of similar propertiesPhotos documenting property condition, damage, or defectsRepair estimates for needed improvementsIndependent appraisal reportDocumentation of property record errors (incorrect square footage, features, etc.)

Boone County Assessor Contact

Boone County Assessor's Office

Phone: (765) 482-0140

Address: 115 Courthouse Square, Lebanon, IN 46052

Website: https://boonecounty.in.gov/offices/assessor/

Hours: Monday-Friday, business hours (contact office to confirm)

Tax Exemptions in Boone County

Homestead Standard Deduction

$48,000 standard deduction plus 40% supplemental deduction on remaining assessed value (2026)

The primary property tax deduction for owner-occupied residences, consisting of a standard deduction plus a supplemental deduction

Eligibility: Must own and occupy the property as your primary residence as of December 31 of the year prior to the tax yearDeadline: January 15 (for taxes payable in the current calendar year)

Over-65 Credit

$150 annual credit

A direct credit applied to the property tax bill for senior homeowners, replacing the former Over-65 Deduction

Eligibility: Age 65 or older by December 31 of the prior year, with household income at or below $60,000 (single) or $70,000 (joint)Deadline: January 15

Over-65 Circuit Breaker Credit

Variable - limits tax increase to 2% annually

Caps annual property tax increases at 2% per year for qualifying seniors, providing protection against large assessment increases

Eligibility: Age 65 or older, had homestead deduction the prior year, and meets stricter income requirementsDeadline: January 15

100% Disabled Veteran Property Tax Exemption

Full exemption on primary residence (no property value cap)

Full property tax exemption for veterans with 100% service-connected disability rating or Individual Unemployability status

Eligibility: Veterans with 100% VA disability rating or Individual Unemployability (IU) statusDeadline: December 30, 2026 (for 2026 assessment year)

Disabled Veteran Property Tax Credit

$350 credit for wartime service with disability; $250 credit for veterans 62+ with disability (can combine for $600 maximum)

Tax credits for veterans with service-connected disabilities rated 10% or higher

Eligibility: Veterans with at least 10% service-connected disability rating from the VADeadline: December 30, 2026

Blind/Disabled Credit

$125 annual credit

Annual property tax credit for blind or disabled Indiana residents

Eligibility: Individuals who are legally blind or totally disabledDeadline: January 15

Boone County Appeal Packet — $49

Comparable sales evidence, county-specific filing guide, and professional cover letter. Enter your address to get started.

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Boone County for 2026?
The deadline to file a property tax appeal in Boone County is June 15, 2026. The Assessor's Office mails Form 11 assessment notices on April 28th and Form 11A notices on April 29th each year, giving property owners approximately six weeks to review their assessments and file an appeal if they believe their property is overvalued. Missing this deadline means you'll have to wait until the next assessment cycle to challenge your valuation, so it's critical to act quickly after receiving your notice.
How do I file a property tax appeal in Boone County online or by email?
Boone County allows property tax appeals to be filed by email to assessmentappeal@co.boone.in.us, making the process convenient for homeowners. You should include all supporting documentation such as comparable sales data, photos of property condition issues, and any other evidence supporting your appeal in your email submission. You can also file in person at the Assessor's Office located on the first floor of the Boone County Courthouse at 115 Courthouse Square in Lebanon, or mail your appeal to the same address. No specific state form is required, you can submit a letter explaining your disagreement along with your supporting evidence.
What happens after I file a property tax appeal in Boone County?
After you file your appeal by June 15th, the Boone County Assessor's Office will contact you via email or phone to schedule a preliminary hearing to discuss your appeal and their findings. If you and the assessor reach an agreement on the property value during this informal review, your appeal is resolved. If no agreement is reached, your appeal automatically moves forward to the Property Tax Assessment Board of Appeals (PTABOA), which holds formal hearings on Wednesdays. You'll receive a mailed notice with your scheduled hearing time, and after the PTABOA hearing, you'll receive Form 115 notifying you of the board's decision.
What is the homestead exemption worth in Boone County for 2026?
In Boone County, the Indiana homestead deduction for 2026 consists of a $48,000 standard deduction plus a 40% supplemental deduction on the remaining assessed value. For a home assessed at the county's median value of $341,800, the deduction would be $48,000 plus 40% of $293,800 (the remaining value), which equals $165,520 in total deductions. At Boone County's effective tax rate of 0.80%, this homestead deduction saves the average homeowner approximately $1,324 annually. Additionally, qualifying homeowners automatically receive a new 10% credit (up to $300) on their tax bill starting in 2026, providing even more savings.
How much can I save by appealing my property taxes in Boone County?
A successful property tax appeal in Boone County typically reduces assessed value by 10-20%, according to appeal service providers, which can translate to hundreds or thousands of dollars in annual savings. For example, if your home is assessed at $350,000 and you successfully reduce it by 15% to $297,500, you would save approximately $420 per year at Boone County's 0.80% effective tax rate. Over a typical three-year assessment cycle, that's $1,260 in total savings. The exact amount you can save depends on how much your property is overassessed and the quality of evidence you present showing comparable sales or property condition issues.
What evidence do I need for a successful Boone County property tax appeal?
The most compelling evidence for a Boone County property tax appeal includes recent comparable sales data showing similar homes in your area that sold for less than your assessed value, preferably within the past 6-12 months. You should also provide photos documenting any property condition issues, damage, or needed repairs that affect your home's value, along with contractor estimates for repair costs if applicable. Additionally, review your property record card for errors in square footage, number of bathrooms, basement finish, or other features, objective errors can be corrected through a separate correction process. An independent appraisal can also be powerful evidence, though it's not required for an appeal.
Can I appeal to the Indiana Board of Tax Review if I disagree with the PTABOA decision in Boone County?
Yes, if you disagree with the Boone County Property Tax Assessment Board of Appeals (PTABOA) decision, you can file a Form 131 Petition for Review of Assessment with the Indiana Board of Tax Review (IBTR) to continue your appeal to the state level. You must file this petition with the IBTR and simultaneously send a copy to the Boone County Assessor's Office. If you're still unsatisfied after the IBTR renders its decision, you have the option to further appeal to the Indiana Tax Court. This multi-level appeals process ensures property owners have multiple opportunities to challenge assessments they believe are unfair or inaccurate.
Do I qualify for senior property tax relief in Boone County if I'm over 65?
If you're age 65 or older by December 31, 2025, you qualify for the new Over-65 Credit of $150 annually on your 2026 property tax bill, provided your household income is at or below $60,000 (single filers) or $70,000 (joint filers). You must file an application with the Boone County Auditor's office by January 15, 2026 to receive this credit, even if you previously received the old Over-65 Deduction. You may also qualify for the Over-65 Circuit Breaker Credit, which caps your annual property tax increase at 2% per year, providing long-term protection against large assessment increases if you meet the stricter income requirements for that program.

Official Resources

Boone County Assessor's Office - Official Website →

Official county assessor website with appeal information, forms, and contact details for filing property tax appeals.

Boone County Property Tax Appeal Process →

Detailed information about the 2026 appeal deadlines, filing methods, and step-by-step process for property tax appeals in Boone County.

Indiana Department of Local Government Finance - Property Tax Benefits →

State agency website with comprehensive information on Indiana property tax deductions, exemptions, credits, and homestead benefits.

Boone County Auditor's Office →

County auditor's office for applying for homestead deductions, senior credits, and other property tax exemptions in Boone County.

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 →

More Indiana Counties

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← All Indiana property tax appeal info

Sources: https://boonecounty.in.gov/offices/assessor/appeal-process/ | https://propertytaxrates.org/counties/indiana/boone-county/ | https://boonecounty.in.gov/offices/assessor/ | https://propertytaxrates.org/exemptions/indiana/ | https://worldpopulationreview.com/us-cities/indiana/by-county/boone-county

Last verified: 2026-07-22