Buying or selling a home in Indiana means dealing with a quirk that surprises people from other states: property taxes are paid in arrears, and they are split between buyer and seller at the closing table. Get the proration wrong, or forget the homestead step that follows, and you can overpay for years. Here is how it actually works.
Indiana Taxes Are Paid in Arrears
The single most important fact: in Indiana, the tax bills you pay this year are for last year's assessment. The 2026 bills correspond to the 2025 assessment date. You are always paying for a period that has already passed.
This is different from a "pay-as-you-go" state. Because the bill lags the period it covers, at any given moment a property has accrued tax liability that has not yet been billed. That gap is exactly what proration at closing exists to settle.
Two Installments a Year
Indiana bills property taxes in two installments, typically a spring installment and a fall installment. We cover the exact timing in when Indiana property taxes are due, but the key point for closings is that a sale can fall before, between, or after those installments. The settlement has to account for taxes that have accrued but are not yet due or not yet billed.
Why Proration Happens
When you sell on, say, July 1, you owned the property for the first half of the year. The taxes for that ownership period have accrued but, because of arrears billing, the bill may not arrive until well after closing, possibly after the buyer owns the home.
To make this fair, the closing prorates the tax burden:
- The seller is responsible for taxes accrued during the seller's period of ownership.
- The buyer is responsible for taxes accrued after taking title.
Because the buyer will be the one who eventually receives and pays the bill, the settlement statement gives the buyer a credit for the seller's unpaid share. The buyer then pays the full bill later, already holding the seller's money to cover the seller's portion.
Think of it as the seller pre-funding their own taxes through the closing rather than writing a separate check months later. The buyer is simply the conduit who hands the combined payment to the county when the bill comes due.
How the Settlement Statement Credits the Buyer
On the closing statement, the seller's accrued-but-unpaid tax share shows up as a credit to the buyer and a debit to the seller. Here is a simplified illustration for a sale closing mid-year on a property with a $4,000 annual tax bill that has not yet been paid for the period in question:
| Item | Amount | Party |
|---|---|---|
| Annual tax bill (estimated) | $4,000 | — |
| Seller's ownership period accrued | approximately $2,000 | Seller owes |
| Credit to buyer at closing | approximately $2,000 | Buyer receives |
| Bill paid later by buyer | $4,000 | Buyer pays |
The exact split depends on the closing date and local convention, and figures are estimates until the actual bill issues. The principle holds: the buyer is made whole for the seller's share through a closing credit.
Because Indiana bills in two installments, the proration also has to consider which installments have already been paid at the time of closing. If the seller already paid the spring installment but the fall installment for an earlier accrual period is still outstanding, the math adjusts accordingly. Your title company or closing agent handles the arithmetic, but understanding the arrears structure lets you sanity-check their numbers instead of taking them on faith.
Warning
Proration is usually based on the most recent known tax bill. If the property's assessment rose for the upcoming cycle, the future bill can be higher than the estimate used at closing, and the buyer absorbs that difference. Review the assessment history before you close so the proration reflects reality.
What Buyers and Sellers Each Should Check
The proration is handled at closing, but neither party should treat it as a black box. A short checklist for each side:
For sellers:
- Confirm which installments you have already paid so you are not double-charged for them.
- Make sure your share is calculated through your last day of ownership, not beyond.
For buyers:
- Verify the proration is based on the most current assessed value, especially if the property was recently reassessed.
- Note the date you take title so you can confirm the credit covers the seller's full period.
- Plan for the full bill when it arrives, even though part of it is the seller's money sitting in your account.
The Homestead Step Buyers Forget
Here is the mistake that costs new owners real money: the homestead deduction does not transfer automatically with the sale. It is tied to the prior owner, not the property.
After you buy a primary residence, you must re-file the homestead deduction in your own name. If you skip it, your next bill can be dramatically higher because you lost the standard and supplemental homestead benefits along with the favorable 1% cap treatment that homesteads enjoy. The full mechanics are in our Indiana homestead exemption guide.
Steps for a new buyer:
- After closing, file the homestead deduction with the county auditor in your name.
- Confirm the effective date so the deduction applies to the correct assessment year.
- Keep proof of filing in your records.
Verify Carried-Over Deductions
The flip side is just as important. Sometimes a prior owner's deductions improperly carry over to the new owner on the rolls. That can feel like a bonus, but it is a liability: counties periodically audit homestead claims, and an improperly carried deduction can trigger back taxes and penalties.
After your purchase:
- Pull your property record and check which deductions are listed.
- Confirm that any homestead reflects your filing, not the prior owner's lingering claim.
- Remove or correct deductions you are not entitled to before the county finds them.
Understanding what each line on the bill means makes this audit straightforward; see how to read your Indiana property tax bill.
A Note for Investors
If you are buying a rental rather than a primary residence, you generally do not get the homestead deduction at all, and proration math is the same but the cap tier differs. A non-homestead residential rental sits in a higher circuit-breaker tier than an owner-occupied home, which means a larger ongoing bill and a different cost basis for your underwriting. Our guide to buying rental property by Indiana county walks through how taxes factor into the deal.
For a fuller list of what you may or may not qualify for after a purchase, the complete list of Indiana property tax exemptions and deductions is a useful checklist to run through once you close.
Find Your Property
Before and after closing, verify the numbers yourself. Browse the statewide Indiana property explorer or look up a specific county such as Marion County to confirm assessed value, current deductions, and tax history.
Our property lookup tool makes it easy to check what deductions are on a property today, and if your assessment looks inflated, our tax appeal service can help.
For official forms and deduction rules, the Indiana DLGF is the authoritative source.