Grand Isle Property Tax
Access 2026 property tax rates, payment portals, and assessment tools for Grand Isle. Taxes are administered by Grand Isle County.
Local Rate
N/A
County Avg
1.32%
State Avg
0.02%
City vs. County Jurisdiction
While you live in Grand Isle, property taxes are officially administered by Grand Isle County. The county handles your assessment, billing, appeals, and exemptions.
Grand Isle Tax Calculator
Est. Annual Bill
Rate: % (Grand Isle County)
How Property Taxes Work in Grand Isle
Property taxes for Grand Isle residents are calculated on the ad valorem principle — your bill is proportional to the fair market value determined by the Grand Isle County Appraisal District.
Assessment Role
The county assessor determines the value of all real estate in Grand Isle every tax year.
Collection Role
Taxes are collected by the county tax office and distributed to city, school, and special-district funds.
Grand Isle Tax Components
Your annual bill is a combined total of levies from multiple local government entities:
Lowering Your Grand Isle Property Tax Bill
Claim Exemptions
Most homeowners qualify for a Homestead Exemption that significantly reduces the taxable value of your primary residence. Seniors and veterans may qualify for additional relief.
Protest Your Value
If the county assessment exceeds fair market value you can file an appeal with the Appraisal Review Board (ARB). Over 50% of appeals result in a reduction.
2026 Important Deadlines
Assessment Notices
April – May
Protest Deadline
May 15th*
Payment Due
January 31st
*Protest deadlines are generally May 15th or 30 days after your notice was mailed, whichever is later.
Grand Isle Property Tax FAQs
For 2026, property tax rates in Grand Isle vary by parcel. Refer to the Grand Isle County average rate of 1.3181933519411% as a baseline estimate.
Residents of Grand Isle pay property taxes to the Grand Isle County Tax Assessor — not a city office. Use the county's official payment portal.
Yes. File a Notice of Protest with the Grand Isle County Appraisal District within 30 days of receiving your valuation notice. See the county appeal guide for step-by-step instructions.
Grand Isle County Official
Property tax for Grand Isle is handled at the county level.
Nearby Cities
💡 Tax Tip
Check for Homestead or Senior exemptions on the Grand Isle County portal. These can reduce your taxable value by $25,000–$100,000+.