AppealDesk
Rob Hartley

Rob Hartley

Founder, AppealDesk · February 28, 2026

Indiana Property Tax Appeal Deadline 2026: June 15 for Most Counties

Updated March 2026

Indiana property tax appeals must be filed by June 15, 2026 in most counties. Some counties may have different deadlines — always verify with your local assessor.

Indiana's Three-Level Appeal System

Level 1: Township/County Assessor (Form 130)

  • Deadline: June 15, 2026 (or 45 days from notice)
  • File: Form 130 or Form 133
  • Cost: Free

Level 2: PTABOA (County Board)

  • Deadline: 45 days from assessor decision
  • File: Form 131
  • Cost: Free

Level 3: Indiana Board of Tax Review

  • Deadline: 30 days from PTABOA decision
  • File: Form 131
  • Cost: $100 filing fee

Missing Level 1 means no Level 2 or 3.

Key Dates for Indiana Property Owners

  • March 1, 2026: Assessment date
  • May 1-15: Most Form 11s mailed
  • June 15: Appeal deadline (most counties)
  • July-September: Informal hearings
  • October-December: PTABOA if needed

How to Calculate Your Indiana Deadline

Standard deadline: June 15, 2026

Alternative deadline: 45 days from Form 11 date (if later than June 15)

Example:

  • Form 11 dated May 10 → Deadline is June 15 (standard)
  • Form 11 dated May 20 → Deadline is July 4 (45 days)

Always file by the LATER of these dates.

Indiana Form 130 Requirements

Must include:

  • Property address and parcel number
  • Current assessed value
  • Your requested value
  • Reason for appeal (check box)
  • Signature and date

Can include (but not required by deadline):

  • Comparable sales
  • Photos
  • Appraisal
  • Other evidence

File first, add evidence later.

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Indiana-Specific Appeal Considerations

Trending Rules

Indiana uses trending to adjust values between reassessments. Understanding your county's trending factor is crucial:

  • Applied annually
  • Can compound errors
  • Often overstates market changes

Agricultural Land

  • Different process (Form 134-A)
  • Soil productivity maps required
  • Earlier deadlines in some counties

Business Personal Property

  • Form 130/134 for equipment
  • Different evidence requirements
  • May 15 deadline typically

County-Specific Information

Marion County (Indianapolis)

  • Online filing available
  • High volume = expect delays
  • Strong informal resolution rate

Lake County (Gary/Hammond)

  • June 15 strict deadline
  • No online filing
  • Requires certified mail

Allen County (Fort Wayne)

  • Electronic evidence submission
  • Quick turnaround times
  • Reasonable hearing officers

Hamilton County (Carmel/Fishers)

  • Competitive market assessments
  • Professional evidence crucial
  • Early filing recommended

St. Joseph County (South Bend)

  • Paper filing only
  • Include Form 134 if needed
  • Campus-area properties complex

What Happens If You Miss June 15?

Consequences:

  • Pay full assessed value
  • No appeal rights for 2026
  • Wait until 2027 to appeal
  • Overpayment not refundable

Example loss:

  • $40,000 over-assessment
  • Tax rate: 2.5%
  • Annual loss: $1,000
  • No recovery option

Indiana Appeal Success Tips

What Works:

  • Recent sales (last 12 months)
  • Same school district comparables
  • Professional appraisals
  • Clear value documentation

What Doesn't:

  • Zillow estimates
  • Tax bill complaints
  • Budget arguments
  • Old comparables ((>18 months))

Quick Action Plan for Indiana

By May 15:

  • Review Form 11 assessment
  • Compare to last year
  • Research rough comparables

By June 1:

  • Complete Form 130
  • Gather initial evidence
  • Identify specific issues

By June 10:

  • File appeal (don't wait)
  • Mail certified if required
  • Keep all confirmations

After Filing:

  • Build complete evidence file
  • Prepare for informal meeting
  • Consider professional help

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Special Indiana Programs

Over-65 Deduction

  • Additional $12,480 deduction
  • Separate from appeals
  • Can do both

Circuit Breaker Credits

  • Caps tax at % of value
  • Automatic if eligible
  • Appeal can increase credit

Homestead Deduction

  • Must file separately
  • One per person
  • Significant savings

Form 130 Filing Methods by County

Electronic Filing Available:

  • Marion
  • Hamilton
  • Hendricks
  • Johnson
  • Boone

Mail Only:

  • Most other counties
  • Use certified mail
  • Request return receipt

In-Person Preferred:

  • Lake
  • Porter
  • LaPorte

The Cost of Procrastination

Every day closer to June 15 increases risk:

  • June 1-5: Safe window
  • June 8-12: Getting risky
  • June 13-14: Office chaos
  • June 15: System overload

File by June 5 for peace of mind.

Don't Navigate Indiana's System Alone

Indiana's multi-level system rewards prepared appeals. Counties know most people file bare Form 130s without evidence.

AppealDesk provides Indiana homeowners:

  • Pre-filled Form 130/133
  • County-specific evidence format
  • Comparable sales analysis
  • PTABOA preparation guide
  • Professional packet presentation

Final Reminder: June 15 Is It

Indiana counties are strict about deadlines. No extensions for:

  • Vacation
  • Didn't receive notice
  • Computer problems
  • Forgot

June 16 = too late. No exceptions.

Your Form 11 is coming. Your deadline is set. File early, file correctly, save money.

108 days until June 15. Clock's ticking.