Hawaii Property Tax Appeals Follow County-Specific Deadlines

Hawaii property owners who believe their real property assessment is incorrect may have the right to appeal, but the filing deadline and process depend on the county where the property is located.

There is no single statewide October 1, 2026 deadline for property-tax assessment appeals. County governments establish their own assessment and appeal schedules, making it important for homeowners to check the requirements that apply to their property.

Why the Deadline Matters

Property assessments are used by counties when determining real property taxes. If an owner believes the assessed value, classification or exemption shown on an assessment notice is incorrect, the owner may be able to challenge the assessment through the county’s appeal process.

However, the appeal window can occur well before property tax bills are issued. Waiting until later in the year could mean missing the applicable deadline.

For example, Maui County’s 2026 assessment notices were scheduled to be mailed by March 15, with appeals due by April 9, 2026.

County Rules Can Differ

Hawaii does not use one uniform deadline for all real property assessment appeals.

Maui County, for example, requires taxpayers to file an appeal with its Board of Review by April 9 for the current year. The county allows appeals to be mailed or filed in person, and its current information also provides an online filing option.

The county’s appeal board can hear disputes involving assessments and has authority to increase or lower an assessment after considering the issues raised by the taxpayer.

Because Honolulu, Hawaii County, Kauai County and Maui County administer their own real property tax systems, property owners should check directly with the appropriate county office rather than relying on a statewide deadline.

What Property Owners Should Review

Homeowners considering an appeal should carefully examine their assessment notice and look for potential errors involving:

• Property characteristics or improvements
• Assessed or market value
• Property classification
• Exemptions or other assessment information
• Comparable properties that may support a different valuation

Supporting evidence can include recent comparable sales, appraisal information, photographs or documentation showing the property’s condition.

Appeals Do Not Automatically Stop Tax Payments

An important point for property owners is that filing an appeal does not necessarily eliminate or postpone the obligation to pay property taxes.

Maui County, for example, specifically advises taxpayers to continue paying taxes by the applicable due dates while an appeal is pending. If the taxpayer ultimately prevails, an overpayment may be refunded according to the county’s procedures.

Practical Takeaway

Hawaii homeowners should not rely on an October 1 statewide deadline when considering a property-tax assessment appeal.

Instead, property owners should review their assessment notice and contact the real property tax office in their county to confirm the applicable filing deadline, forms, fees and evidence requirements.

Because appeal deadlines can occur months before property tax bills are issued, checking the county’s schedule early can help property owners avoid missing their opportunity to challenge an assessment.