Ohio County is Indiana's smallest county by both area (87 square miles) and population (around 5,940 in the most recent decennial count). Rising Sun is the only incorporated municipality and serves as county seat. The entire county fits comfortably within what would be a single township in many other Indiana counties — and the property tax structure reflects that compactness. One assessor, one auditor, one treasurer, one PTABOA, all operating from the courthouse at 413 Main Street in Rising Sun.
For Ohio owners, the 2026 cycle brings the same statewide changes hitting every county: the SB 1 supplemental homestead credit capped at $300, the supplemental homestead deduction step-up from 35% to 40%, and the DLGF cost-table reset that drove statewide AVs up roughly 12% in 2025. What's distinctive in Ohio is that the small county scale changes how every step of the cycle plays out.
Ohio County's small parcel count means you can typically reach the assessor directly within 24 hours. In counties with 200,000+ parcels, an informal correction can take weeks of phone tag. In Ohio County, the practical accessibility of the assessor's office is one of the strongest tools an owner has.
What Small-County Scale Actually Means
Three structural differences separate a small-county assessment cycle from a large-county one.
Direct Assessor Access
Ohio County's parcel inventory runs in the low thousands. The assessor knows the parcels — and increasingly, the property owners — by name. Informal corrections (CAMA data errors, missing deductions, class miscoding) typically resolve in a single phone call rather than requiring a formal appeal.
Faster PTABOA Cycles
The Property Tax Assessment Board of Appeals in Ohio County hears few formal appeals each year. When an appeal does go to formal hearing, the wait is measured in weeks or months rather than the 6–12 months common in Marion County. The full process is covered in the Indiana property tax appeal guide.
Concentrated Tax Base
With a small total levy spread across a small parcel base, individual parcel changes have a more visible effect on the county's overall tax picture. A few large commercial reassessments can shift the rate calibration meaningfully.
The 2026 Statewide Changes in Ohio
SB 1 $300 Homestead Credit
For a typical Rising Sun-area homestead paying $1,200–$1,800 a year, the SB 1 credit is roughly $120–$180 — the 10% bill reduction.
Supplemental Deduction Step-Up
35% to 40% of post-standard-deduction AV. Applied automatically to homesteads on file.
DLGF Cost-Table Reset
Ohio County residential parcels generally tracked the state at roughly 12% AV growth for 2025-pay-2026. Riverfront and historic parcels along the Ohio River saw varied effects depending on existing improvements and condition.
Rising Sun Homestead Math
For a typical Rising Sun homestead with a $140,000 AV at Ohio County's typical rate range:
| Step | Calculation | Amount |
|---|---|---|
| Gross AV | — | $140,000 |
| Less standard deduction | $48,000 | $92,000 |
| Less supplemental (40%) | 40% × $92,000 | $36,800 |
| Net AV | — | $55,200 |
| Tax rate (illustrative) | ~$22 / $1,000 | — |
| Gross tax | $55,200 × 0.022 | $1,214 |
| 1% cap test | 1% × $140,000 | $1,400 (cap not binding) |
| Pre-credit | min(gross, cap) | $1,214 |
| SB 1 credit | 10% × $1,214, max $300 | $121 |
| Final annual tax | $1,214 − $121 | $1,093 |
This is illustrative — actual Ohio County rates vary by district. The pattern: Rising Sun homesteads typically sit below the cap, the SB 1 credit applies at 10%, and the deduction step-up provides a quiet additional reduction in the taxable base.
Form 11 Items for Ohio County Owners
The 2026 Form 11 mails statewide on April 28. Ohio-specific items to verify, on top of the statewide Form 11 walkthrough:
| Item | Why it matters in Ohio County |
|---|---|
| Year-over-year AV change | Anything over 12–15% on a stable parcel deserves a closer look |
| Riverfront flag | Ohio River parcels carry both view value and floodplain risk |
| Improvement condition rating | Older Rising Sun structures often need adjustment |
| Property class code | Riverboat-related commercial parcels have specific class treatment |
| Homestead status | New owners frequently need to refile after a sale |
Riverfront Considerations
Rising Sun sits on the Ohio River, and a meaningful share of the city's parcels have either river frontage or river views. Riverfront status affects valuation in two opposing directions:
Premium for View and Access
Direct river frontage and unobstructed river views command a market premium that comparable inland parcels don't share. The assessor's neighborhood codes for riverfront should reflect this premium.
Discount for Flood Risk
Properties below the FEMA-defined base flood elevation carry flood risk that affects both insurance pricing (per how insurance companies price Indiana properties) and resale value. A parcel coded into a higher elevation than its actual elevation may be over-assessed.
The two effects interact, and a well-calibrated assessment captures both. When the AV looks unusual on a riverfront parcel, check both the neighborhood code (for the view premium) and the flood zone designation (for the flood discount).
Filing an Appeal in Ohio County
The Ohio County PTABOA process:
- File Form 130 with the Ohio County Assessor's Office in Rising Sun
- Include 3–5 comparable sales from the trending window — given small parcel counts, recent comparable sales may be limited; cross-reference Switzerland and Dearborn County sales with adjustments
- Photo documentation of any condition issues
- For riverfront parcels: flood zone documentation and view assessment
- Filed by June 15, 2026 or 45 days from the Form 11 mailing date
The trending sales window for the 2026 assessment runs January 2024 through January 2025.
The Casino Question
The Rising Star Casino, located in Rising Sun, is the largest single property in Ohio County by AV. Casino properties have specific assessment treatment that differs from standard commercial:
- Building improvements assessed at cost approach
- Gaming equipment falls under personal property (BPP) rules
- Riverboat gaming structures have separate treatment depending on their permanently-moored status
- Casino-related parking, hotel, and ancillary facilities assessed as standard commercial
For owners of properties near the casino, the casino's tax contribution is the largest single item in the county's revenue mix — and changes to the casino's assessment (or its operations) ripple through the county's overall tax structure faster than they would in a larger county.
Ohio County At a Glance
| Metric | Ohio County |
|---|---|
| Population (est.) | ~5,940 |
| Area | 87 sq mi (smallest in Indiana) |
| Total parcels | ~5,000 |
| County seat | Rising Sun (only incorporated municipality) |
| Major commercial parcel | Rising Star Casino |
| School corporation | Rising Sun-Ohio County Community School Corp |
| Spring 2026 bill due | May 11, 2026 |
| Form 11 mails | April 28, 2026 |
| Appeal deadline | June 15, 2026 (or 45 days from Form 11) |
What to Do This Spring
For Rising Sun-area homestead owners: open the Form 11 the day it arrives, verify the five line items, and call the assessor's office for any administrative correction. The small-county scale means most issues resolve faster informally than formally.
For riverfront owners: verify both the neighborhood code (for the view premium) and the flood zone designation (for the flood discount). The two effects should interact in the AV — if either is missing, an appeal may be warranted.
For owners of properties near the casino footprint: the casino's tax contribution stabilizes Ohio County rates. Any major change to casino operations could affect future rate calibration in either direction.
Property Lookup pulls Ohio County parcel data including comparable sales (with cross-county supplements where in-county comps are limited), and Tax Appeal Automation builds the Form 130 + evidence package on contingency.
Find Your Ohio County Property
- Ohio County overview
- Ohio residential parcel data
- Ohio commercial parcel data
- Ohio industrial parcel data
- Ohio agricultural parcel data