Kauai Property Tax: Rates, Exemptions & Payment Steps Online

Kauai Property Tax impacts every homeowner on the island, and the latest Hawaii county tax rates set the baseline for each billing cycle. The County of Kauaʻi Real Property Assessment Section publishes the Kauai real estate tax assessment online, where owners can view their parcel number lookup Kauai and apply the real estate tax calculator Kauai to estimate dues. Recent 2026 property tax increase Kauai adjustments appear on the assessment card, and eligible residents should check property tax exemptions Kauai to lower their net taxable value. For quick help, call the tax assessor at (808) 241‑4224 or email rpassessment@kauai.gov.

Kauai Property Tax deadlines follow a strict schedule, with the first Kauai land tax due dates falling in August and the second installment due in February. The Kauai tax collector office processes payments through electronic funds transfer, credit card, or mailed check, and offers a portal for payment options for Kauai property taxes. Owners disputing assessments can engage the property tax appeals process Kauai, while non-resident property tax Kauai rules apply to out‑of‑state investors and vacation rental tax Kauai obligations. Information on property tax lien information Kauai, delinquency penalties Kauai, tax deed sale Kauai, and refund eligibility for Kauai property taxes is available in the property tax forms PDF Kauai on the official website.

Search Kauai County Property Tax

Kauai County operates under the official designation of the County of Kauaʻi, and property owners begin their research at the county-managed Real Property Assessment portal. The search portal accepts parcel numbers, owner names, and street addresses to display assessment cards, valuation history, tax classifications, and exemption status for any parcel on the Garden Isle.

Use the following step-by-step searching method to locate records on the official Kauai Property Tax portal:

1. Open the official Kauai Property Tax portal at https://www.kauaipropertytax.com using any modern web browser.
2. Locate the search bar labeled for property lookups on the homepage.
3. Enter a parcel number (TMK), property owner last name, or street name in the search field.
4. Select the matching record from the returned results list to open the parcel detail page.
5. Review the assessment card for tax classification, market value, assessed value, exemptions, and net taxable value.
6. Click the link for tax bills, payment history, or printable notices as needed.

Users who cannot locate records online should call the Real Property Assessment office at (808) 241-4224 or email rpassessment@kauai.gov for direct assistance during business hours.

Kauai Real Estate Tax Assessment Structure

The Kauai real estate tax assessment system assigns every parcel a tax classification, a market value, and an assessed value that the County uses to calculate each annual bill. Assessors in the County of Kauaʻi Real Property Assessment Section review property records, building permits, sales data, and land classifications to determine fair market value as of a specific valuation date.

The 2026 Notice of Property Assessment was mailed by December 1, 2026, and the same data set became available online through the county portal. Each notice includes the tax classification, market value, assessed value, total exemptions, net taxable value, and property status (improved, partially complete, or vacant).

Key elements found on every Kauai assessment card include:

• Parcel number and Tax Map Key (TMK)
• Property classification code
• Market value as determined by the assessor
• Assessed value used in the tax calculation
• List of approved exemptions
• Net taxable value after all deductions
• Property status flag showing improvement level

Kauai County Tax Rates and Classification System

Hawaii county tax rates vary by island, and Kauai operates under its own classification system set by the County Council each June. The classification approach assigns different per-thousand tax rates to categories such as owner-occupied residential, non-owner-occupied residential, hotel and resort, commercial, industrial, agricultural, and conservation.

The Kauai County Council announced the 2026-2026 fiscal year rates with no changes compared to the prior year, providing rate stability for the upcoming billing cycle. Property owners preparing a closing or budget after July 1 should verify the latest rates on the official Kauai real property tax page before finalizing any projection.

Common classifications used in the Kauai Property Tax structure include:

• Owner-Occupant: Primary residence of the property owner
• Residential: Second homes and long-term rentals
• Hotel and Resort: Short-term vacation rentals and resort properties
• Commercial: Retail, office, and service businesses
• Industrial: Manufacturing, warehouse, and utility operations
• Agricultural: Active farming and ranching land
• Conservation: Protected open space and forest reserve
• Vacant Agricultural: Undeveloped land zoned for agriculture

Property Tax Exemptions Kauai Residents Can Claim

Property tax exemptions Kauai residents can claim reduce the net taxable value of a parcel and directly lower the annual bill. The most common exemption is the home exemption, which applies to owner-occupied properties that serve as the primary residence of the applicant.

To qualify for the home exemption, applicants must occupy the property as their principal residence for at least 270 days during the calendar year and file a Hawaiʻi income tax return (Form N-11) with a reported address in the County of Kauaʻi. The deadline to file for real property tax relief and exemptions for the 2026 assessments was September 30, 2026.

Available exemption categories include:

• Home Exemption: Primary residence occupied by the owner
• Senior Citizen Exemption: Age-tiered reductions for qualifying residents
• Disability Exemption: Reductions for owners with qualifying disabilities
• Veteran Exemption: Special rates for honorably discharged veterans
• Blind or Deaf Exemption: Reductions for owners with qualifying impairments
• Agricultural Use Exemption: Reductions for qualifying farmland
• Charitable Use Exemption: Reductions for qualifying nonprofit operations
• Circuit Breaker Credit: Income-based relief for low-income homeowners

The County of Kauaʻi launched a new Online Home Exemption Application system that allows residents to file from home using any internet-connected device, reducing paperwork and waiting times at the assessment office.

Kauai Land Tax Due Dates and Payment Schedule

Kauai land tax due dates follow a fixed biannual schedule that the County publishes before each fiscal year begins. Bills for the 2026-2026 tax year were mailed in two installments, with payment deadlines in August and February.

The first installment of real property taxes for the 2026-2026 tax year was due on Wednesday, August 20, 2026. The second installment was due on February 20, 2026, and any unpaid balance after that date triggered a 10 percent penalty plus 1 percent interest per month.

Property owners who fail to receive a bill remain responsible for the payment, and the County mails bills only as a courtesy. Late payments incur penalties on the unpaid balance plus monthly compounding interest until the full amount is settled.

First Installment Details

The first installment covers the first half of the fiscal year tax liability and falls due in mid-August each year. Property owners can pay the full annual amount with the first installment to stop interest from accruing on the second half.

Payment methods accepted for the first installment include electronic funds transfer, credit card payments through the county portal, mailed checks, and in-person visits to the collections office at 4444 Rice Street in Līhuʻe.

Second Installment Details

The second installment covers the remaining half of the annual tax liability and falls due in mid-February each year. Failure to pay real property taxes in full by February 20, 2026, triggered a ten percent penalty as well as one percent interest per month on the unpaid balance.

Owners disputing an assessment must still pay the installment on time and request a refund after the appeal resolves, because non-payment can lead to a lien on the property.

Payment Options for Kauai Property Taxes

Payment options for Kauai property taxes include several channels that allow owners to settle bills at their convenience. The county accepts electronic payments, mailed checks, and in-person transactions during office hours.

Electronic payments through the county portal at https://www.kauaipropertytax.com allow owners to pay by electronic funds transfer or credit card from any location. Some forms and exemption filings can also be submitted online at https://connect.kauai.gov.

Available payment channels include:

• Electronic Funds Transfer (EFT) through the county portal
• Credit card payment via the secure online system
• Mailed check payable to the County of Kauaʻi
• In-person payment at the Real Property Assessment office
• Wire transfer for large institutional transactions
• Escrow payment handled through a mortgage servicer

Owners with questions about a payment or refund can call the collections section at (808) 241-4272 or email rpc@kauai.gov for direct help.

Real Estate Tax Calculator Kauai Methods

The real estate tax calculator Kauai methods rely on the published per-thousand rates multiplied by the net taxable value of each parcel. Owners calculate estimated bills by multiplying the net taxable value (after exemptions) by the applicable tax rate for the property classification, then dividing by one thousand.

Online tools such as StateCalc and SmartMortgageCalcs offer Hawaii property tax calculators that use statewide averages and assessment ratios, allowing owners to project annual bills based on home value assumptions. Hawaii uses an average effective property tax rate near 0.27 percent, roughly $2,295 per year on a median-valued home of $850,000.

Steps to estimate a Kauai Property Tax bill:

1. Locate the assessed value on the most recent assessment card.
2. Identify the tax classification (Owner-Occupant, Residential, Hotel/Resort, etc.).
3. Subtract the value of approved exemptions from the assessed value to find the net taxable value.
4. Multiply the net taxable value by the per-thousand rate for the classification.
5. Divide by 1,000 to obtain the estimated annual tax.
6. Split the annual amount in half for the two installment payments.

Property Tax Appeals Process Kauai

The property tax appeals process Kauai owners can use begins with a review of the assessment card and a written complaint to the Real Property Assessment Section. Owners who believe the assessed value exceeds fair market value may file an appeal within the window set by county ordinance.

Appeals must generally be filed before a specific deadline each year, and the County of Kauaʻi publishes that date on the official portal. Owners filing appeals must present supporting evidence such as comparable sales, independent appraisals, photographs of property defects, or documentation of errors in the property record.

Required documents for a successful appeal typically include:

• Completed appeal form filed with the Real Property Assessment Section
• Copy of the most recent Notice of Property Assessment
• Comparable sales data for the neighborhood
• Independent appraisal report from a licensed appraiser
• Photographs showing physical defects or condition issues
• Documentation of zoning, flood zone, or easement restrictions
• Records of any income loss for agricultural or rental classifications

If the appeal succeeds, the County issues a revised assessment and refunds any overpayment with interest. If the appeal is denied, owners may pursue further review through the Board of Review or Tax Appeal Court.

Non-Resident Property Tax Kauai Rules

Non-resident property tax Kauai rules apply to owners whose principal residence sits outside the State of Hawaiʻi. Out-of-state investors, second-home owners, and mainland residents who own Kauai real estate cannot claim the owner-occupant home exemption unless they meet the 270-day occupancy rule.

Non-resident owners typically pay the higher Residential rate rather than the Owner-Occupant rate, and they cannot claim the standard home exemption on the parcel. Additional state-level filings such as Form N-15 may apply for non-resident income tax purposes on rental income earned from a Kauai parcel.

Key rules for non-resident owners include:

• Property is taxed at the Residential classification rate, not the Owner-Occupant rate
• Standard home exemption is not available without meeting the principal residence test
• Short-term vacation rentals may trigger Hotel and Resort classification
• State income tax filing on rental income is required each year
• General Excise Tax (GET) applies to rental income earned in Hawaiʻi
• Conveyance tax applies at the time of purchase based on the sale price

Vacation Rental Tax Kauai Obligations

Vacation rental tax Kauai obligations apply to owners who rent their property for periods shorter than 30 days. Short-term rentals in resort-zoned areas typically fall under the Hotel and Resort classification, which carries a higher tax rate than the Residential classification.

Vacation rental owners must register with the County, obtain a Transient Accommodations Tax (TAT) license, collect the General Excise Tax (GET), and remit those taxes to the State Department of Taxation. Bills, licensing, and registration questions are handled by separate state and county agencies.

Obligations for vacation rental operators include:

• Register the property with the County of Kauaʻi as a transient vacation rental
• Obtain a Transient Accommodations Tax (TAT) license from the State
• Collect the General Excise Tax (GET) on rental income
• Remit TAT and GET to the Hawaiʻi Department of Taxation
• Pay property tax at the Hotel and Resort classification rate
• Maintain guest registration records for at least five years
• Comply with zoning and non-conforming use rules on the island

Agricultural Land Tax Kauai Provisions

Agricultural land tax Kauai provisions grant reduced tax rates for parcels actively used for farming, ranching, or other qualifying agricultural operations. To receive the agricultural rate, owners must demonstrate genuine commercial agricultural activity on the parcel rather than passive ownership of vacant farmland.

The County reviews each agricultural classification request by inspecting the parcel, reviewing production records, and verifying compliance with the agricultural dedication rules. Parcels that fail the dedication requirement revert to the Vacant Agricultural or Residential classification and are taxed at the higher rate.

Documentation supporting an agricultural classification includes:

• Farm business registration with the Hawaiʻi Department of Agriculture
• Federal Schedule F tax return showing farm income and expenses
• Production records covering crops, livestock, or aquaculture output
• Receipts for seeds, feed, equipment, irrigation, and labor
• Sales invoices from buyers, wholesalers, or farmers markets
• Photographs of active cultivation, livestock, or farm infrastructure
• Lease agreements if the land is farmed by a separate operator

Property Tax Bill Explanation Kauai

A property tax bill explanation Kauai owners receive breaks down the annual tax into installments, applies exemptions, and shows the net amount due for each payment cycle. The bill identifies the parcel, the classification, the assessed value, the exemptions, the net taxable value, and the installment amount.

Each line on a Kauai Property Tax bill carries specific meaning. The Tax Map Key identifies the parcel, the classification sets the rate, the assessed value feeds the calculation, the exemptions reduce the taxable base, and the net taxable value multiplied by the rate produces the annual tax.

Bill components shown on a typical Kauai notice include:

• Tax Map Key (TMK) parcel identifier
• Owner name and mailing address
• Property classification and tax rate per $1,000
• Assessed value certified by the assessor
• List of approved exemptions and their dollar value
• Net taxable value used in the calculation
• First installment amount and due date
• Second installment amount and due date
• Penalty and interest clauses for late payments

Delinquency Penalties Kauai

Delinquency penalties Kauai applies to any unpaid tax balance after the installment due date. The County adds a flat 10 percent penalty to the unpaid amount and 1 percent interest per month until the balance is paid in full.

Delinquent accounts accumulate interest monthly, and the compounding effect raises the total owed quickly. Continued non-payment can result in a lien recorded against the parcel and eventual referral for a tax deed sale.

Steps the County takes on delinquent accounts include:

1. Mail a delinquent notice shortly after the due date passes.
2. Assess the 10 percent penalty on the unpaid balance.
3. Begin charging 1 percent interest per month on the unpaid balance.
4. Record a Notice of Lien against the parcel in public records.
5. Refer the delinquent account for collection action.
6. Schedule a tax deed sale if the balance remains unpaid.

Tax Deed Sale Kauai Process

The tax deed sale Kauai process begins when a property remains delinquent for an extended period after the County records a lien. The County publishes notice of the pending sale, sets a minimum bid, and auctions the parcel to the highest qualified bidder.

Bidders at a tax deed sale purchase the parcel subject to any prior liens, encumbrances, or easements. The original owner may redeem the property by paying all delinquent taxes, penalties, interest, and sale costs before the sale is finalized.

Stages of a Kauai tax deed sale include:

• Parcel becomes eligible after extended delinquency
• County publishes notice of the pending tax deed sale
• Minimum bid is set based on delinquent taxes, penalties, interest, and costs
• Public auction is held at the County building or online
• Winning bidder pays the bid amount and receives a tax deed
• Former owner has a statutory redemption window to reclaim the parcel
• If unredeemed, the new owner records the deed and takes possession

Property Tax Lien Information Kauai

Property tax lien information Kauai owners should review covers how unpaid taxes attach to the parcel as a real estate lien. A recorded lien clouds the title, reduces marketability, and complicates refinancing or sale transactions until the underlying balance is paid.

Liens remain attached to the parcel regardless of ownership changes, and new owners inherit the obligation if they purchase a parcel with an outstanding balance. Title companies routinely demand payment of all delinquent taxes, penalties, and interest before issuing title insurance.

Information available through lien records includes:

• Parcel identifier and current owner of record
• Date the lien was recorded
• Original delinquent amount
• Penalty and interest accrued to date
• Total payoff amount required to release the lien
• Status of the lien (active, released, or pending sale)
• Reference to the recording number in the Bureau of Conveyances

Refund Eligibility for Kauai Property Taxes

Refund eligibility for Kauai property taxes applies when an owner overpays, when an exemption is granted after the original billing, or when an appeal reduces the assessed value. Refunds are issued by the County collections section after a written request and supporting documentation are received.

Common reasons for a refund include duplicate payments, exemptions granted after billing, successful appeals that lower the assessment, and clerical errors on the original notice. Interest is paid on refunds at the same statutory rate applied to delinquencies.

Steps to request a refund include:

1. Contact the collections section at (808) 241-4272 or rpc@kauai.gov.
2. Provide a copy of the original bill and proof of payment.
3. Explain the reason for the refund with supporting documents.
4. Allow the County to review the request and verify the overpayment.
5. Receive the refund check or electronic transfer once approved.

Property Tax Forms PDF Kauai Resources

Property tax forms PDF Kauai resources cover the official documents the County provides for exemption claims, appeals, ownership changes, and address updates. Forms are available at the Real Property Assessment office and on the official county website for download and submission.

Exemptions and tax relief forms are available at the Real Property Assessment office at 4444 Rice Street, Suite 454, Līhuʻe, Kauaʻi, Hawaiʻi 96766, or online at https://www.kauaipropertytax.com. Some forms can be submitted online at https://connect.kauai.gov.

Commonly requested forms include:

• Home Exemption Application (Owner-Occupant)
• Senior Citizen Exemption Application
• Disability Exemption Application
• Veteran Exemption Application
• Agricultural Use Dedication Form
• Property Tax Appeal Form
• Change of Address Form
• Duplicate Bill Request Form
• Refund Request Form

Parcel Number Lookup Kauai Process

Parcel number lookup Kauai owners can perform uses the Tax Map Key (TMK) to identify a specific parcel in county records. The TMK combines the island code, zone number, section number, plat number, and parcel number into a unique identifier that the assessment and tax systems use to track every property.

The TMK appears on the assessment card, on the property tax bill, on recorded deeds, and on subdivision maps. Using the TMK in the online portal returns the exact parcel record, including valuation history, ownership chain, and exemption status.

How to decode a Kauai TMK example (4-3-8-002-023):

1. The leading digit (4) identifies Kauai County within the State of Hawaiʻi.
2. The second digit (3) represents the tax zone within the county.
3. The third digit (8) is the section number within the zone.
4. The fourth group (002) is the plat number within the section.
5. The final group (023) is the individual parcel number on the plat.

2026 Property Tax Increase Kauai Adjustments

The 2026 property tax increase Kauai adjustments were limited to assessment updates rather than rate changes, since the County Council kept the per-thousand rates stable. Increases shown on bills traced back to higher market values on updated sales data rather than rate hikes.

Properties sold between valuation cycles typically see the largest assessment jumps because the County uses recent comparable sales to set the new market value. Long-term owners who never sold may see smaller increases tied to neighborhood trends and cost indexes.

Factors that influence Kauai Property Tax assessments include:

• Recent comparable sales in the same neighborhood
• Cost of construction for replacement valuation
• Income approach for rental and commercial properties
• Zoning changes and permitted land use
• Permitted additions, renovations, or new construction
• Market shifts driven by supply, demand, and interest rates
• Natural disaster impacts on coastal or flood-zone parcels

Bureau of Conveyances and Recorded Documents

The State of Hawaiʻi Bureau of Conveyances maintains the official record of real estate transactions across all islands, including Kauai. The Bureau accepts deeds, mortgages, liens, releases, and other instruments for recording, and it provides public access to those records through its online system.

Recording real estate documents at the Bureau of Conveyances creates a public chain of title that protects buyers, lenders, and the County. Tax liens, releases of liens, and tax deed transfers related to Kauai Property Tax are recorded in the same system.

Documents commonly recorded with the Bureau of Conveyances include:

• Warranty deeds and quitclaim deeds transferring ownership
• Mortgage agreements and assignments
• Mortgage releases and satisfactions
• Tax liens and releases of tax liens
• Tax deeds issued after a county tax sale
• Easements, covenants, and restrictions
• Subdivision maps and consolidations

Kauai Tax Collector Office Responsibilities

The Kauai tax collector office handles billing, payment processing, delinquency notices, lien recording, and refund issuance for property taxes. The collections section within the County of Kauaʻi Finance Department is the central point of contact for payment questions and account resolution.

Collectors send installment bills each year, process mailed and electronic payments, track delinquencies, and apply penalties and interest to overdue accounts. They also coordinate with the Real Property Assessment Section when liens or tax deed sales become necessary.

Responsibilities assigned to the Kauai tax collector office include:

• Mail biannual installment bills to property owners
• Process payments received by mail, online, or in person
• Track payment status and apply credits to parcel accounts
• Issue delinquency notices after missed due dates
• Apply the 10 percent penalty and 1 percent monthly interest
• Record tax liens against delinquent parcels
• Coordinate tax deed sales on long-term delinquent accounts
• Issue refunds for overpayments and successful appeals

Kauai Property Tax Planning Tips for Owners

Smart planning reduces annual tax bills, prevents missed deadlines, and keeps owners in good standing with the County. Reviewing the assessment card each December, applying for every exemption available, and tracking payment deadlines all lower the long-term cost of owning Kauai real estate.

Owners should keep documentation that supports the lowest defensible assessed value, especially for parcels near flood zones, easements, or other physical limitations. Successful appeals rely on solid evidence rather than opinion, so professional appraisals and recent comparable sales carry significant weight.

Useful planning actions include:

• Review the December assessment card every year for errors
• Apply for every exemption the parcel qualifies for before the deadline
• Track both installment due dates to avoid penalties
• Pay through escrow when possible to prevent missed payments
• Document physical defects with dated photographs
• Save comparable sales for future appeals
• Consult a licensed appraiser for high-value parcels
• Maintain accurate mailing address with the County

Frequently Used Kauai Property Tax Deadlines

Tracking Kauai Property Tax deadlines keeps owners compliant and avoids unnecessary penalties. The County publishes key dates each year, and owners should mark the calendar with installment due dates, exemption filing windows, and appeal deadlines.

Missed deadlines trigger automatic penalties and interest, and the County does not waive these charges for late payment without a formal written request. Owners facing financial hardship should contact the collections section promptly to explore payment plans or other options.

Important deadlines to remember include:

• December 1: Notice of Property Assessment mailed for the following tax year
• February 20: Second installment due date for the current fiscal year
• June 30: County Council typically adopts the new fiscal year rates
• August 20: First installment due date for the current fiscal year
• September 30: Real Property Tax relief and exemptions filing deadline

Contact, Local Details, and Map

Property owners who need direct assistance with Kauai Property Tax questions can reach the County of Kauaʻi Real Property Assessment Section using the verified contact details below. The Bureau of Conveyances handles recorded documents and lien recordings for all Hawaiʻi counties, including Kauai.

Tax Assessor

• Department Name: County of Kauaʻi Real Property Assessment Section
• Official Website URL: https://www.kauaipropertytax.com
• Direct Public Search Portal Link: https://www.kauaipropertytax.com
• Main Phone: (808) 241-4224
• Official Email: rpassessment@kauai.gov
• Physical Address: 4444 Rice Street, Suite 454, Līhu’e, Hawai’i 96766
• Mailing Address: 4444 Rice Street, Suite 454, Līhu’e, Hawai’i 96766

Collections Section

• Department Name: County of Kauaʻi Real Property Collections Section
• Main Phone: (808) 241-4272
• Official Email: rpc@kauai.gov

Frequently Asked Questions

Kauai Property Tax matters affect every homeowner, investor, and renter on the Garden Isle. Knowing where to pay, how to claim exemptions, and what deadlines apply can save money and avoid penalties. The County of Kauaʻi Real Property Assessment office offers online tools, phone help, and in‑person service to answer these needs quickly.

How do I look up my Kauai real estate tax assessment online?

Visit the official portal at kauaipropertytax.com. Enter your parcel number, street address, or owner name in the search box. The system returns the latest assessment card, showing market value, assessed value, tax classification, and any exemptions recorded. Review the figures, note the taxable amount, and print the page for your records. If the parcel does not appear, call the assessment office at (808) 241‑4224 for assistance.

What are the payment due dates for Kauai Property Tax in the 2026‑2026 fiscal year?

The first installment is due on August 20, 2026. The second installment must be paid by February 20, 2026. Paying early avoids a 10 percent penalty and 1 percent monthly interest that start after each deadline. Payments can be made online through the county portal, by mail using the bill’s remittance slip, or in person at the County Treasurer’s office.

Which exemptions can I claim on my Kauai property tax bill?

Homeowners may apply for the Home Exemption, which reduces the taxable value by up to $40,000 for owner‑occupied residences. Seniors aged 65 or older qualify for an additional $10,000 exemption, while those 75 or older receive another $10,000. Agricultural land receives a 40 percent reduction on its assessed value. Submit exemption forms online at kauaipropertytax.com or drop them off at 4444 Rice Street, Suite 454, Līhuʻe. The deadline for the 2026 exemption filing is September 30, 2026.

How can I appeal a Kauai property tax assessment?

First, obtain a copy of your assessment card from the online portal. If the assessed value seems too high, file a written appeal with the Real Property Assessment Section within 30 days of the mailing date. Include supporting evidence such as recent sales of comparable properties, a professional appraisal, or documentation of damage. Send the appeal to rpassessment@kauai.gov or deliver it to 4444 Rice Street, Suite 454. The office will schedule a hearing and issue a decision, usually within 45 days.

What payment options are available for non‑resident owners of vacation rentals on Kauai?

Non‑residents can pay by credit card, electronic funds transfer, or bank draft through the county’s online payment portal. The portal also lets owners set up automatic recurring payments, which is helpful for seasonal rental income. If you prefer mail, include a check or money order with the tax bill and write the parcel number on the memo line. For questions, call the Collections Section at (808) 241‑4272 or email rpc@kauai.gov.