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| Effective Property Tax Rate | ~0.95% |
| County Income Tax | 1.20% |
| Combined Income Tax (state + county) | 4.20% |
| Indiana Homestead Deduction | Lesser of 60% AV or $48,000 + 37.5% supplemental on first $600K |
| Over-65 Credit (2026) | $150 flat credit |
| Over-65 Circuit Breaker | Caps increases at 2%/yr if AGI ≤ $60K single / $70K joint |
Property Tax Worked Example
On a $400,000 home in Johnson County with full homestead deduction:
| Gross Assessed Value | $400,000 |
| Less: Standard Homestead Deduction | ($48,000) |
| Less: Supplemental Homestead (37.5% on $352K) | ($132,000) |
| Net Assessed Value | $220,000 |
| Effective tax at 0.95% | ~$2,090/year |
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Communities in Johnson County
- Sagebriar by Del Webb (Greenwood, 524 homes, mid-$300s+) — Newest Del Webb in metro
- Morningside Bellshire (Bargersville, 524 age-targeted, $300K–$700K+)
How to File
File homestead and over-65 deductions with the Johnson County Auditor's Office (Franklin) by January 15. Bring proof of age, prior year's federal tax return for AGI verification, and parcel number. The standard homestead deduction renews automatically; over-65 credits require annual income re-verification.
Run Johnson County Math For Your Income
The tax case for Johnson is strongest at $40K–$100K of taxable income. We can connect you with an agent to run your specific numbers.
Request Agent IntroductionRelated Research
Hamilton County Tax Guide · Hendricks County Tax Guide · Three-County Comparison · Sagebriar vs Vandalia