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.

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

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.