Indiana Homestead Deduction Guide

Indiana uses “homestead deduction,” not just “homestead exemption”

Indiana homeowners often search for a “homestead exemption.” The official Indiana property tax term is usually Homestead Standard Deduction and Supplemental Homestead Deduction.

That matters because a deduction works by reducing the assessed value used to calculate a property tax bill. The Indiana DLGF explains that deductions reduce assessed value, while credits reduce the tax liability on a parcel.

This article is about Indiana’s property-tax homestead deduction. It is not about bankruptcy homestead protection. It is also not a general guide to every Indiana property tax credit, senior program, veteran deduction, or local tax issue. Some of those rules may interact with a homestead, but the first question here is simple: is the home treated as your Indiana homestead for property tax purposes?

The two homestead deductions on an Indiana home

Indiana’s homestead system has two main deduction pieces for a qualifying homestead:

• the Homestead Standard Deduction; and
• the Supplemental Homestead Deduction.

One form is generally used for both. The DLGF lists State Form 5473, also known as Form HC10, as the “Claim for Homestead Property Tax Standard / Supplemental Deduction” on its official deduction forms page.

Homestead Standard Deduction amount

Under the DLGF’s 2025 legislative guidance, the standard homestead deduction is being phased down by assessment date. The official guidance states the following schedule:

This does not mean Indiana’s homestead system disappears in one step. The standard deduction phases down while the supplemental homestead deduction increases. You can read the DLGF’s official 2025 memo on legislation affecting deductions for the state explanation.

Supplemental Homestead Deduction amount

The Supplemental Homestead Deduction is calculated after the standard homestead deduction. For taxes due and payable after December 31, 2025, the DLGF guidance says the supplemental deduction equals the assessed value after the standard homestead deduction, multiplied by a percentage that increases over time.

The same DLGF guidance says the supplemental deduction may not exceed 75% of the gross assessed value of the property. Your actual tax bill also depends on your assessed value, local tax rate, credits, and any voter-approved items that apply in your taxing district. The homestead deduction is an important piece, but it is not a promise of a specific dollar savings.

Who should check eligibility before applying

You should check the homestead deduction if the Indiana home is your principal place of residence. That usually means the home where you actually live and treat as your main home.

Indiana homestead rules can involve more than one fact. The home must be in Indiana. It usually must be a dwelling and the land immediately surrounding it, up to the allowed acreage. The applicant must have the required ownership, contract, trust, or other qualifying interest. Mobile homes and manufactured homes can have special timing and assessment treatment.

Common situations that need extra care include:

• you bought the home recently;
• you sold one Indiana home and bought another in the same year;
• your spouse owns or occupies another residence;
• you own another home in Indiana or another state;
• part of the home is rented or used for business;
• the home is in a trust;
• the home is owned through an LLC, partnership, corporation, or other entity;
• you inherited the home but the estate or deed is not finished;
• a spouse or co-owner died;
• you divorced or changed title; or
• you moved to assisted living, a nursing facility, military service, or another temporary living arrangement.

These are not automatic denials. They are reasons to slow down and ask the official office before you rely on a deduction. The county auditor is the main point of contact for deductions and credits. The DLGF says county auditors are the best point of contact for questions about eligibility.

What you usually need before you file

The exact process can vary by county. Some counties allow online filing. Some use a paper form. Some have county-specific instructions.

Before you contact the auditor, gather basic facts:

• property address;
• parcel number or key number, if you have it;
• county, city, town, or township;
• name of each owner or contract buyer;
• spouse information, if applicable;
• date you bought or began occupying the home;
• copy of deed, closing statement, or recorded contract, if requested;
• information about any other residential property you or your spouse own, are buying, or have a beneficial interest in;
• last five digits of Social Security number or other accepted identification number, if the form asks for it; and
• proof that the home is your principal residence, if the county requests it.

How to apply through the county auditor

Indiana’s state guidance says a taxpayer must submit a new deduction or credit application to the county auditor. For the homestead deduction, the starting form is usually Form HC10, State Form 5473, unless the county uses an accepted electronic process.

Some Indiana real estate transfers use a sales disclosure form that may serve as an application for the homestead deduction. That does not mean every buyer is safe. If the home is important to your tax bill, verify the deduction with the county auditor after closing.

Deadlines and timing

Indiana property tax timing can confuse homeowners because bills are often tied to an assessment year and a later pay year.

The safest practical rule is this: do not wait for the tax bill to arrive. If you bought the home, changed title, or think the deduction is missing, contact the county auditor as soon as possible.

Mobile homes and manufactured homes can have timing rules that differ from ordinary real property. If your home is a mobile or manufactured home, ask the county auditor which assessment and filing calendar applies.

If the deadline has passed, still contact the county auditor. Ask whether the application can be applied to the next cycle. Ask whether any appeal, correction, or refund process is available for your facts. Do not assume the answer is yes, and do not assume the answer is no.

When you may need to reapply or notify the auditor

Once approved, the homestead deduction is not normally an annual application. But it is not something you can ignore forever.

Check with the county auditor if any of these happened:

• you sold the home;
• you bought a replacement home;
• you added or removed someone from the deed;
• you transferred the home to a trust or out of a trust;
• you transferred the home to an LLC or other entity;
• you stopped using the home as your principal residence;
• you began renting the home or part of it;
• a co-owner or spouse died;
• you divorced; or
• you discovered the deduction is on the wrong property.

Hard situations that deserve extra attention

You recently moved

If you moved from one Indiana home to another, check both parcels. The old homestead may need to come off for the next assessment cycle. The new home may need a new filing. Moving late in the year can make the timing harder, so do not rely on a general rule from a neighbor.

You inherited the home

Inheritance does not answer the homestead question by itself. The county may need to know who owns the property now, who occupies it, whether an estate is still open, and whether the occupant has the required interest. If you live in the inherited home, contact the auditor before the next deadline.

A spouse or owner died

Do not assume the deduction will continue correctly after a death. The answer can depend on title, surviving spouse status, occupancy, and whether the county records changed. Ask the auditor to review the parcel. Keep copies of death certificate, deed, estate papers, or affidavit documents if the county asks for them.

The home is in a trust

Homes held in trusts can qualify in some situations, but the trust language and the resident’s interest matter. Do not transfer a home into a trust and assume the homestead deduction is safe. Ask the county auditor or a qualified legal professional before or soon after the transfer.

The home is owned by an LLC or other entity

Entity ownership is risky for ordinary homeowners. Indiana has special rules for certain entity-owned homesteads, and the facts can be narrow. If your residence is titled in an LLC, partnership, corporation, or similar entity, get county guidance before claiming or relying on the deduction.

You use part of the home for rent or business

If part of the property is income-producing, the county may need more detail. The form process may ask for the use and portion of the property involved. This does not always mean the entire property fails. It does mean you should answer carefully and truthfully.

What to do if the deduction is missing or denied

First, get the reason in writing if you can. Ask whether the issue is a missing application, a title change, a principal residence question, a duplicate homestead, a deed problem, or a county record error.

Then ask what the county will accept to fix the problem. A simple missing form may be different from a denied principal residence claim.

Indiana’s DLGF appeal information says an “objective” property tax appeal may include the approval, denial, or omission of a deduction, credit, exemption, abatement, or tax cap. It also says objective claims may be made for up to three years of assessments with Form 130, and refund requests may also require Form 17T.

That does not mean every case will be approved. It means there may be a formal path if the issue is not fixed informally. Review the DLGF page on property tax appeals and ask the county which form fits your situation.

How to avoid common homestead mistakes in Indiana

• Check your bill after closing. Do not assume the deduction transferred automatically.
• File early. January deadlines arrive before many homeowners are thinking about spring tax bills.
• Use your county auditor, not a paid lookalike site.
• Tell the truth about where you live.
• Report title changes and use changes.
• Keep proof of filing.
• Check both homes if you moved during the year.
• Ask before putting the home into a trust or LLC.
• Do not claim two homesteads unless the county confirms a specific rule applies.

Official sources to use first