The annual property tax figure on a Greenwood listing is the seller's bill. It's built on the home's value as of January 1, 2025, it reflects the seller's homestead status, and it was calculated under a state formula that changes again for next year's bills, and every year after that through 2031. Over the past twelve months, Johnson County's assessments, deductions and city budget have all moved in different directions. That makes the listed number a weak guide to what a new owner's bills will look like.
Here's the evidence, starting with the part that shows up at the closing table.
The listed number runs a year behind and belongs to the seller
Indiana collects property taxes in arrears. The Indiana Department of Local Government Finance's 2026 assessment calendar ties the January 1, 2026 assessment to taxes due and payable in 2027. Following that same one-year sequence, the bills Greenwood homeowners are paying in 2026 come from the January 1, 2025 assessment.
The 2026 bills are due in two installments, May 11 and November 10, 2026. Johnson County lists the same November 10 deadline for the fall payment. So if you close on a Greenwood home this fall, you're buying in the middle of paying for a year that's already over.
At closing, arrears are usually handled with a proration. The title company estimates the seller's share from the latest tax amount and charges it against the seller's proceeds, and the buyer pays the bills that come due after closing. That estimate leans on the most recent bill, which is the seller's. It reflects their assessment, their deductions and the formula from the year that bill covers. We walk through the other line items in our guide to deeds and sales disclosure fees.
The formula changes every year until 2031
Senate Enrolled Act 1 of 2025 rewrote the two main homestead deductions on a set schedule. The standard deduction shrinks and the supplemental deduction grows, a step at a time. The DLGF laid out the full schedule in a May 27, 2026 memo.
| Taxes payable in | Assessment date | Standard deduction | Supplemental deduction |
|---|---|---|---|
| 2026 | Jan. 1, 2025 | $48,000 | 40% |
| 2027 | Jan. 1, 2026 | $40,000 | 46% |
| 2028 | Jan. 1, 2027 | $30,000 | 52% |
| 2029 | Jan. 1, 2028 | $20,000 | 57% |
| 2030 | Jan. 1, 2029 | $10,000 | 62% |
| 2031 and later | Jan. 1, 2030 and later | $0 | 66.7% |
The supplemental percentage applies to the assessed value left over after the standard deduction comes out. To see how much that moves things, take a homestead assessed at $300,000 and hold the value flat:
- 2026-pay: $300,000 minus $48,000 leaves $252,000. Taking 40% of that off leaves $151,200 of net assessed value.
- 2027-pay: $300,000 minus $40,000 leaves $260,000. Taking 46% off leaves $140,400.
- 2031-pay: With no standard deduction, taking 66.7% off $300,000 leaves $99,900.
This shows the deduction math only. It isn't a tax bill. Local tax rates, credits and Indiana's circuit breaker, which caps a qualifying homestead's bill at 1% of gross assessed value, all apply on top of it. Our property tax caps explainer covers how that cap works. Even so, the example shows that the same house at the same value produces a different taxable base every year this decade. A seller's 2026 bill comes from one row of that table, and a buyer's first full year of ownership comes from a later one.
SEA 1 also created a supplemental homestead credit worth 10% of a qualifying homestead's tax liability, capped at $300. It's applied automatically, and amounts approved by referendum are left out of the calculation. You qualify for it through the standard homestead deduction.
Why the first SEA 1 bills looked unchanged
When the spring 2026 bills arrived, many Johnson County homeowners couldn't find the savings. The Daily Journal reported in May that county officials were fielding questions about it. County Commissioner Brian Baird told the paper, "I think there's a lot of confusion in the way the state promoted what was going to happen."
In the same report, Baird said the new relief generally came to $150 to $300, and most homes landed toward the low end. He said rising assessed values canceled out or shrank the savings for many households. The paper also noted that SEA 1 didn't change how properties are assessed, and that assessments drive rising taxes in a growing county. County Auditor Elizabeth Alvey added that a software problem forced the assessor's and auditor's offices to correct some bills by hand.
The reporting includes no countywide average for how much 2026 bills changed, so a single "typical" savings figure isn't available. What the reporting does show is that the formula and the assessments pulled against each other, and for many 2026 bills the assessments won.
The 2026 assessment may move the other way
The bills paid in 2027 come from the January 1, 2026 assessment. Johnson County Assessor Mike Watkins described that assessment to the Daily Journal in June quite differently. He said the market had calmed down this year, and he believed more parcels in the county went down than up, which would be the first time since 2020. As of early June, the county's appeals board had received 380 appeals, less than 20% of the number filed by the same deadline last year. Watkins's best guess was that many values had stabilized or declined.
He also explained how sales feed into assessments:
"When a house is assessed for $100,000, and it sells for $150,000, it's our job to trend it upward. When it's assessed for $150, and it sells for $100, it's our job to go the exact opposite direction, as long as we've got proper evidence and it's not an anomaly."
Watkins said a single unexpected sale gets treated as an anomaly. When the pattern repeats, as with 30 high sales in a neighborhood of 300 parcels, "that becomes more of the realistic market." He also said neighborhoods with a lot of new construction are more likely to trend upward, while stable, older areas tend to hold steady or slip.
For a Greenwood buyer, the assessment behind your first full bill is set by recent sales on your street, and those sales may include your own purchase price. A listing's tax line from the 2025 assessment can't reflect any of that.
Greenwood's budget shows where the relief went
The city's books show how the state formula and the falling assessments land together. According to Daily Journal coverage of the 2027 budget preview, City Controller Greg Wright told the Common Council that Greenwood lost nearly $3 million in property tax revenue in 2026. More than $1.2 million went to the new homestead credit and nearly $1.6 million to circuit breaker caps.
For 2027, Wright projected property taxes growing by almost $1.2 million, about 6%. Using DLGF data, he also projected that losses to homestead credits and circuit breakers would grow by more than $1 million, driven by a decline in assessed values. He put Greenwood's net assessed value down nearly 4.8%, to just over $4.5 billion. Local operating levies were frozen for 2026 and will be limited to 1% growth in 2027 and 2% in 2028.
The city is shifting toward local income tax, which Wright projected would rise by more than $1.6 million, nearly 10%, in 2027. He called that a more volatile source and said the current distribution system is scheduled to be replaced in 2029.
Each of those budget lines reflects the same shift that shows up on individual bills. The deduction schedule, the $300 credit and the circuit breaker are all moving how the tax base gets split, while Greenwood's total assessed value is falling.
The filing that decides which rules apply
All of the homestead math above depends on the home being recorded as a homestead in the new owner's name. Here's how that works in Johnson County:
- File with the County Auditor. New homestead deduction applications go to the county auditor, according to the DLGF's deductions page. Johnson County takes applications online or in person at the Auditor's Office.
- Check the deadline. The DLGF's example says an application completed on or before January 15, 2026 applied to the 2025-pay-2026 bill. The county's FAQ still lists an older December 31 and January 5 timeline. Because the two sources disagree, confirm the current date with the Auditor's Office.
- Don't count on it happening at closing. Current DLGF sales disclosure guidance tells filers to get submission instructions from the county assessor. Nothing in that guidance says the homestead filing happens on its own when you close.
FAQ
Is the tax amount on a listing wrong?
Usually not. It's an accurate record of the seller's bill. That bill came from the January 1, 2025 assessment and the 2026-pay deduction rates, and it includes any homestead benefits the seller qualified for.
Did the 2026 legislative session undo SEA 1's deduction schedule?
No. The DLGF's May 2026 memo says the standard and supplemental deduction schedule stayed in place. House Enrolled Act 1210 clarified the order in which certain homestead credits are applied.
Can I still appeal the 2026 assessment?
The Daily Journal reported a June 15 appeal deadline for the 2026 assessment, which covers taxes payable in 2027, for counties that mailed notices before May 1. The Johnson County Assessor's office can answer questions about later assessment years.
A listing's tax line tells you what the seller paid. If you're selling in Greenwood, buyers will be asking what a new owner pays, and it helps to have that answer ready when you list. The Jeff Paxson Team folds the current assessment picture into every pricing conversation, alongside our transparent 4.5% listing fee. Get your Free Home Valuation to see where your home stands for 2027.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
