Kosciusko County is a distinctive case in Indiana property tax. Warsaw, the county seat, anchors what locals call the "orthopedic capital of the world" — Zimmer Biomet, DePuy Synthes, and Medtronic Spine all maintain major operations here, supported by a deep medical-device supplier base. Outside Warsaw, the county is dominated by lakes — over 100 of them, with Wawasee, Tippecanoe, Webster, and Winona among the most developed — driving an unusually high share of waterfront residential AV. Rural ag land fills the rest.
This three-way mix — high-end medical-device industrial, premium lake residential, working ag — means a single statewide property tax change like SB 1 lands very differently across parcels even within a few miles. Here's how the 2026 cycle plays out.
Three Property Profiles, Three Different 2026 Stories
Warsaw Industrial / Medical Device
The county's commercial-industrial AV is concentrated in a small number of large medical-device parcels around Warsaw. These properties are professionally managed for tax purposes, periodically appealed, and operate on the 3% commercial cap. The 2026 changes most relevant here are:
- The new business personal property exemption rising to $1M (and $2M in 2027), which simplifies filing for the smaller suppliers in the orbit of the major plants
- The DLGF's removal of the downward base-cost adjustment, which carried into 2025 industrial AVs and continues to influence 2026 trended values
For the smaller medical-device suppliers — machine shops, packaging firms, sterilization specialists — the BPP threshold change is the most consequential 2026 administrative shift.
Lake Residential
This is where Kosciusko looks unlike most of Indiana. Waterfront and near-water homes around Wawasee, Tippecanoe, Webster, and Winona carry premium AVs that have appreciated steadily for two decades. The 2026 cycle continues that trend, supported by the Indiana 2026 housing market of single-digit appreciation and persistent inventory pressure on desirable submarkets.
Two SB 1 considerations matter here:
- The new 10% supplemental homestead credit (capped at $300) applies only to the owner-occupied principal residence — second homes and vacation lake properties don't qualify
- Many lake properties carry the 2% other-residential cap rather than the 1% homestead cap, meaning AV moves translate more directly into bill moves
Lake-house owners: verify your homestead designation. A property used as a primary residence qualifies for the 1% cap, the homestead deduction, and the new SB 1 $300 credit. The same property classified as a second home gets the 2% cap and none of the homestead benefits. Misclassification at the lake is one of the highest-dollar errors in Kosciusko property tax.
Agricultural Land
The non-Warsaw, non-lake portion of the county is working farmland — and Indiana's agricultural land base rate is the input that drives those AVs. The 2026 base rate, certified by the DLGF in early January, applies uniformly across all 92 counties. The county-specific portion is the soil productivity index applied to each ag parcel.
For ag owners, 2026 also introduces the new rental/farmland 2% deduction, starting at 13.3% in 2026 and phasing up over subsequent years. This is a meaningful structural reduction for working farms and a modest reduction for landlord-owned farmland.
What Kosciusko's Veteran Property Tax Reforms Mean
The Kosciusko Veteran Service Office has flagged for local owners that Indiana's expanded veteran and disabled homeowner property tax credits apply for the 2026 bill. For qualifying veterans — particularly those with service-connected disability ratings — the deductions can substantially reduce or eliminate property tax liability on a primary residence. Filing the appropriate Form 12662 with the assessor before the deadline is the gating step.
What to Check on Your Kosciusko Form 11
The general Form 11 walkthrough applies. Kosciusko-specific items:
Homestead vs. Second Home Classification
Lake property is the most common error. If you live in your lake house year-round, it qualifies for homestead. If it's a second home, it doesn't — and the cap, deductions, and credits differ accordingly.
Lake Frontage Measurement
Waterfront AV is often driven by frontage measurement rather than total acreage. A measurement error in either direction compounds across the cycle. Verify the frontage figure on your property record card.
Ag Soil Productivity Index
For working ag parcels, the soil productivity index drives a meaningful share of AV. If your parcel includes meaningful non-tillable acreage (woods, wet, road frontage), verify that the assessor's productivity classification reflects actual soil composition.
Industrial / Personal Property
Smaller suppliers around Warsaw should re-evaluate BPP filings under the new $1M floor. If your prior-year filing was below $1M, you likely no longer need to file for 2026.
Kosciusko Property Tax Mechanics
Spring and fall installments in Kosciusko County are due May 11, 2026 and November 10, 2026 respectively. Form 11 notices typically reach mailboxes by the middle of May in Kosciusko, slightly later than the statewide April-end target — confirm the actual mailing date on your notice for the 45-day appeal clock.
| Metric | Kosciusko County |
|---|---|
| County seat | Warsaw |
| Notable employers | Zimmer Biomet, DePuy Synthes, Medtronic Spine |
| Major lakes | Wawasee, Tippecanoe, Webster, Winona |
| Effective property tax rate (Warsaw median) | ~0.82% |
| Spring installment due | May 11, 2026 |
| Fall installment due | November 10, 2026 |
| Form 11 mailing | Mid-May 2026 |
| Appeal deadline (Form 130) | 45 days after notice mailing |
Filing a Kosciusko Appeal
The Form 130 appeal process follows the statewide framework. Local notes:
- Filing destination: Kosciusko County Assessor's Office, Courthouse, Warsaw
- Lake property comparables: pull only from the same lake — comparables across different lakes carry materially different premiums
- Ag comparables: pull from the same soil productivity tier, not just the same county
- Industrial appeals: typically professional-handled; allow long PTABOA timelines
For lake-property appeals specifically, comparable selection is the entire ballgame. Two properties on the same lake but on different chains, different sides, or different frontage configurations can differ in defensible AV by 30% or more. Property Lookup can filter to the same lake and frontage profile to surface the right comparables.
A Note on Investor and Second-Home Buyers
Kosciusko's lake market draws investor and second-home buyers from across the Midwest. For non-resident buyers, the 2026 tax math is meaningfully different than for full-time owners:
- 2% other-residential cap applies (not 1% homestead)
- No standard or supplemental homestead deduction
- No SB 1 $300 supplemental credit
- For rental use, the new rental 2% deduction (starting 13.3% in 2026) does apply
- Mortgage deduction available regardless of residency
Pro forma analysis on a Kosciusko lake purchase should use the 2% cap and exclude homestead benefits unless the buyer plans to establish residency.
Find Your Kosciusko County Property
- Kosciusko County overview
- Kosciusko residential parcel data
- Kosciusko commercial parcel data
- Kosciusko agricultural parcel data