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Updated 2025 Tax Year

Plaquemines County
Property Tax Guide

Everything you need to know about property taxes in Plaquemines County, LA. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
Quick Facts
Tax Rate
70.12 mills (7.012%) - varies by special taxing districts within parish
Exemptions
5+ Available
Section 1

How Property Tax Works

Plaquemines County (Parish) property taxes fund essential local services including schools, fire protection, law enforcement, road maintenance, and parish operations. The property tax system in Louisiana operates on a millage-based structure, where one mill equals $1 of tax for every $1,000 of assessed value. For the 2025 tax year, Plaquemines County's total millage rate is 70.12 mills (7.012%), which applies to the assessed value of properties after any applicable exemptions.

Property taxes in Plaquemines County vary by location within the parish due to special taxing districts that fund specific services like fire protection, drainage, or municipal services. Residential properties are assessed at 10% of their fair market value, while the homestead exemption can reduce the assessed value by up to $75,000 for owner-occupied homes. The effective tax rate for most homeowners typically ranges from 0.5% to 0.8% of market value after exemptions, making Louisiana one of the lower property tax states nationally.

Section 2

What Makes Up Your Tax Bill

ComponentRate (Mills)Description
Parish General~15.00Basic parish operations and services
School Board~25.00Public education funding
Fire Protection~8.00Fire department services (varies by district)
Drainage/Levee~6.00Flood protection and drainage maintenance
Road/Bridge~4.00Road maintenance and infrastructure
Library~2.50Public library system
Other Districts~9.62Various special assessments and bonds
Total Rate70.12Combined millage for 2025 levy year

Note: Actual rates vary significantly by location within Plaquemines County based on which special taxing districts serve your property. Some areas may have additional municipal taxes, garbage collection fees, or special assessment districts that can increase the total millage rate. Contact the Plaquemines Parish Assessor's Office for your specific millage rate based on your property location.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Plaquemines County, property taxes are due in two installments:

Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes in Plaquemines County are additional property tax assessments that occur when there are changes to a property's ownership, value, or use during the tax year. The most common triggers include new construction completion, property improvements that increase assessed value, change of property use (such as converting from residential to commercial), or correction of assessment errors discovered mid-year.

When a supplemental tax is issued, it's calculated by determining the difference between the old and new assessed values, applying the current millage rate to that difference, and prorating it based on the number of months remaining in the tax year. For example, if new construction worth $100,000 in assessed value is completed in July, the supplemental tax would be ($100,000 ÷ 1,000) × 70.12 mills × (6 months ÷ 12 months) = $350.60. Supplemental tax bills are typically mailed within 60 days of the assessment change and follow the same payment schedule as regular property taxes, with interest and penalties applying if not paid by the due date.

Example Calculation

Example 1: $300,000 Home with Homestead Exemption

  • Market Value: $300,000
  • Less Homestead Exemption: -$75,000
  • Taxable Value: $225,000
  • Assessed Value (10%): $22,500
  • Annual Tax: $22,500 × 0.07012 = $1,577.70
  • Monthly Payment: $131.48

Example 2: $600,000 Home with Homestead Exemption

  • Market Value: $600,000
  • Less Homestead Exemption: -$75,000
  • Taxable Value: $525,000
  • Assessed Value (10%): $52,500
  • Annual Tax: $52,500 × 0.07012 = $3,681.30
  • Monthly Payment: $306.78

Example 3: $1,000,000 Investment Property (No Homestead)

  • Market Value: $1,000,000
  • Less Homestead Exemption: $0 (not applicable)
  • Taxable Value: $1,000,000
  • Assessed Value (10%): $100,000
  • Annual Tax: $100,000 × 0.07012 = $7,012.00
  • Monthly Payment: $584.33

Note: Homestead exemption requires annual application and owner-occupancy. Additional exemptions may be available for seniors, veterans, or disabled persons but require separate applications and qualifying criteria.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Plaquemines County require property tax escrow accounts for borrowers with less than 20% down payment or those who request this service. Your lender collects 1/12 of your estimated annual property tax with each monthly mortgage payment, depositing these funds into an escrow account. The lender then pays your property taxes directly to Plaquemines Parish when they become due on December 31st each year.

Lenders typically conduct an annual escrow analysis to ensure adequate funds are collected, which may result in payment adjustments if your property taxes increase due to reassessment or millage rate changes. You should receive an annual escrow statement showing deposits, payments made, and any surplus or shortage. If your property taxes decrease or you have excess funds in escrow, you may receive a refund. Property owners remain ultimately responsible for ensuring taxes are paid on time, even when using escrow services, so it's important to verify that payments were made and received by the parish tax collector.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Plaquemines County for the current tax year? A: Property taxes are due by December 31st each year and become delinquent on January 1st of the following year. For the 2025 tax year, taxes are due by December 31, 2025.

Q: What homestead exemption is available and how do I apply? A: The homestead exemption reduces your property's assessed value by up to $75,000 for owner-occupied homes. This is an exemption (reduces assessed value), not a tax credit. You must apply annually with the Plaquemines Parish Assessor's Office, typically by December 31st, and must occupy the property as your primary residence.

Q: Are there additional tax credits available that require application? A: Yes, Louisiana offers several tax credits that directly reduce your tax bill, including the Senior Citizen Credit (age 65+), Veterans Disability Credit, and Disabled Person Credit. These require separate applications with specific documentation and have varying qualification requirements and deadlines.

Q: How does the homestead exemption affect assessment increases? A: In addition to the $75,000 assessed value reduction, Louisiana's homestead exemption caps assessment increases at 10% per year on the exempted portion of your property, providing protection against rapid property value increases.

Q: When are properties reassessed in Plaquemines County? A: Louisiana law requires properties to be reassessed every four years, though the Plaquemines Parish Assessor may conduct interim adjustments for significant changes. Property owners can appeal assessments during the appeal period, typically in August and September.

Q: What are the penalties for late property tax payments? A: Interest begins accruing on January 1st for unpaid taxes at a rate set annually by the Louisiana Tax Commission. Additional penalties and costs may apply, and properties can eventually be sold at tax sale for prolonged non-payment.

Q: Can I pay my property taxes online? A: Yes, Plaquemines Parish typically offers online payment options through their official website. Contact the Plaquemines Parish Sheriff's Office (tax collector) for current online payment methods and any associated convenience fees.

Q: Why might my tax bill differ from my neighbors' even with similar home values? A: Tax bills can vary due to different special taxing districts (fire, drainage, municipal services), different exemption statuses, assessment timing differences, or location within different millage areas of the parish.

Q: How do special assessment districts affect my taxes? A: Special districts provide specific services like fire protection, drainage, or street lighting to defined geographic areas. In 2024, Plaquemines County collected over $1.2 million in special assessment district taxes. Your specific rate depends on which districts serve your property location.

Q: What happens if I disagree with my property assessment? A: You can appeal your assessment during the formal appeal period by filing with the Plaquemines Parish Assessor's Office. Appeals typically must be filed by a specific deadline (usually in September) and require supporting documentation of your property's value.

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