If you closed on a home in Indianapolis and assumed the tax breaks came with the keys, this is the post to read before your next bill. The homestead deduction is not automatic. It does not transfer from the prior owner. And in 2026, an unfiled homestead does not just cost you a deduction — it pushes your property into a higher cap tier and disqualifies you from the new SB1 credit worth up to $300.
For most Marion County homeowners, the combined cost of forgetting this one form runs into the hundreds, sometimes well over a thousand dollars a year. Here is exactly what filing protects, what skipping it forfeits, and how to confirm your status before it bites.
The three things the homestead does for you
When you file the homestead deduction on your principal residence, you unlock three separate benefits that are easy to confuse but legally distinct.
- The homestead deduction itself, which reduces your assessed value before the rate is applied.
- The 1% property tax cap (the homestead "circuit breaker" tier), the lowest cap Indiana offers. Our tax caps explainer walks through how the tiers work.
- The new SB1 homestead credit, a 10% credit on the homestead's tax liability capped at $300, introduced by the 2026 reform. The mechanics are covered in our $300 credit guide.
All three hang on the same hook: a filed homestead deduction. Miss the filing and you lose all three at once.
What "principal residence" actually means
The homestead deduction is reserved for the property you actually live in as your principal place of residence. You cannot claim it on a second home, a rental you own, or a property held in a way that doesn't qualify. You get one homestead in Indiana. If you moved within Marion County, the deduction does not follow you automatically to the new address — the prior homestead must be removed and a new one filed for the new principal residence.
This trips up two groups especially: buyers who kept a prior home as a rental, and buyers who closed late in the year and assumed the seller's homestead "stayed on" the property. It does not. The deduction is tied to the owner-occupant, not the parcel.
What you forfeit if you never file
Here is the part that surprises new owners. An unfiled homestead does not simply zero out the deduction line. It changes your cap tier.
| Status | Cap tier | Homestead deduction | $300 SB1 credit |
|---|---|---|---|
| Homestead filed (owner-occupant) | 1% | Yes | Yes (up to $300) |
| Not filed, owner-occupied | 2% or 3% | No | No |
| Rental / non-homestead | 2% (residential rental) | No | No |
Moving from the 1% cap to the 2% cap doubles the ceiling on what your bill can reach relative to assessed value. With combined Marion County rates running roughly $30 to $45 per $1,000 of net assessed value, the deduction and credit you forfeit compound the problem rather than offset it.
Warning
Buying a home does not file your homestead for you. Title companies and lenders generally do not file it on your behalf, and the seller's homestead is removed when they no longer occupy the property. If you closed and never filed, your 2026 bill almost certainly reflects no homestead, the wrong cap, and no $300 credit.
The supplemental homestead deduction in 2026
Layered on top of the standard homestead is the supplemental homestead deduction, set at 40% in 2026 and scheduled to change in later years. It applies only after the standard homestead is in place — another reason the base filing matters. No standard homestead, no supplemental, no compounding benefit.
Why the supplemental deduction compounds the loss
The supplemental homestead deduction is calculated as a percentage of the assessed value that remains after the standard homestead deduction is subtracted. In 2026 that percentage is approximately 40%. Because it stacks on top of the standard deduction, an unfiled homestead does not cost you one line of relief — it cascades. No standard homestead means there is no base for the supplemental to attach to, so both vanish together, and the property simultaneously drops out of the 1% cap tier. A single missed form removes the standard deduction, the supplemental deduction, the $300 SB1 credit, and the lowest cap, all at once.
Putting the dollars together
To see how these benefits interact, consider an Indianapolis home with a gross assessed value of approximately $300,000. The figures below are illustrative — your actual deduction amounts, rates, and caps will differ — but they show the direction and rough scale of what filing protects.
| Line | Homestead filed | Homestead not filed |
|---|---|---|
| Gross assessed value | $300,000 | $300,000 |
| Standard homestead deduction | Applied | None |
| Supplemental homestead deduction (~40%) | Applied | None |
| Net assessed value after deductions | Substantially lower | Full $300,000 |
| Cap tier | 1% | 2% or 3% |
| $300 SB1 credit | Up to $300 | $0 |
The unfiled column pays tax on a much larger net assessed value, at a higher cap, with no credit. That is why the annual gap for a typical Marion County homeowner runs from the hundreds into four figures.
How to file in Marion County
Filing is handled through the Marion County Auditor, not the assessor. You can file the homestead deduction (commonly the HC-10 process) in person or, for most owners, through the indy.gov property portal. You will need your parcel number, the date you began occupying the home as your principal residence, and identifying information for the owner-occupants.
The practical rule for timing: the deduction must be on file by the statutory deadline for the assessment year to affect that year's bill. If you closed in 2025 and want the homestead reflected on your 2026 pay-2026 cycle, do not wait — file now and confirm it posted.
A step-by-step filing walkthrough
If you are unsure where to begin, work through these steps in order:
- Confirm the home is your principal residence. The homestead is only available on the property you actually live in. Settle this first, because nothing else qualifies you.
- Locate your parcel number. It appears on your purchase documents, your assessment notice, and your parcel record. You will need it to file.
- Note your occupancy date. This is the date you began living in the home as your principal residence, not necessarily your closing date.
- Gather owner-occupant identifying information for everyone on title who occupies the home.
- File with the Marion County Auditor in person or through the indy.gov property portal. The county also maintains general homeowner resources through the Marion County Assessor's Office.
- Confirm it posted. Filing is not the same as appearing on the record. Check your parcel record after filing to verify the deduction, the cap tier, and — on your bill — the credit line all reflect the homestead.
Tip
If you also moved within Indiana, remember you get only one homestead. The deduction on your prior residence must be removed before the new one can take full effect. A lingering homestead on an old address can quietly cause problems on both parcels, so close out the old one as part of the same task.
How to verify your status right now
Do not assume. Pull your record and look for three things:
- A homestead deduction line with a non-zero amount.
- A cap notation showing the 1% homestead tier, not 2% or 3%.
- On your 2026 bill, the new homestead credit line reflecting the SB1 credit. Our bill-reading guide shows where each of these appears.
If any are missing, you have an action item, not a mystery.
Mistakes to avoid
New owners lose these benefits in a handful of predictable ways. Watch for each:
- Assuming the closing handled it. Title companies and lenders generally do not file the homestead for you. The deduction is your responsibility.
- Assuming the seller's homestead carried over. It is removed when they stop occupying the property. The parcel does not keep it warm for you.
- Claiming it on a non-principal residence. A rental, a second home, or a property you do not live in does not qualify, and an improperly claimed homestead can be reversed.
- Filing but never verifying. A filing that did not post is the same as no filing on your bill. Confirm it appears on the record.
- Keeping a homestead on a prior Indiana home. You get one. A stale homestead elsewhere can complicate the new one.
- Confusing the deduction with the assessed value. Filing the homestead fixes the deduction, cap, and credit. It does not lower an inflated assessment — that is a separate appeal.
Common questions
I bought in late 2025. Does my 2026 bill already include the homestead? Only if a homestead was on file by the relevant deadline. If you never filed, the 2026 bill almost certainly reflects no homestead, the wrong cap, and no $300 credit. Pull the record and check.
Does the homestead transfer automatically when I buy? No. It is tied to the owner-occupant, not the parcel, and does not transfer on sale. You must file.
Can I get the $300 SB1 credit without the homestead deduction? No. The credit hangs on a filed homestead. No homestead, no credit.
I missed the window for this year. Is the benefit gone forever? No. File now so the homestead is in place going forward. The concern is the year or years you were unprotected, not future cycles.
Find your property
Confirm your homestead status, cap tier, and assessed value on your own parcel record before your next installment is due. Start with your county page at /indiana/marion, then narrow to /indiana/marion/residential for residential parcels.
If you would rather see your exact homestead, cap, and credit status laid out in one place, Property Lookup pulls your parcel record and value history, and if the underlying assessment looks wrong as well, Tax Appeal walks you through challenging it. Filing the homestead fixes the deduction and cap; an appeal fixes an inflated assessed value — they are separate remedies, and a new owner sometimes needs both.