HonestCasa logoHonestCasa
Updated 2025 Tax Year

La Paz County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
2.5953% average countywide (varies significantly by taxing district location)
1st Due
Oct 1
2nd Due
Mar 1
Exemptions
4+ Available
Section 1

How Property Tax Works

La Paz County's property tax system serves as the primary funding mechanism for essential local services including education, public safety, infrastructure maintenance, and county operations. Property owners in La Paz County face an effective tax rate of approximately 2.5953% for the 2025 levy year, though this represents a countywide average that can vary significantly based on your property's location within specific taxing districts.

The actual property tax rate you pay depends on which special taxing districts serve your property, such as school districts, fire districts, library districts, and other local improvement districts. These additional assessments are layered on top of the base county rate, meaning properties in areas with more special services typically face higher overall tax rates. La Paz County assesses property taxes on both real property (land and buildings) and personal property (business equipment, mobile homes), with taxes becoming due in two installments each fiscal year.

Section 2

What Makes Up Your Tax Bill

ComponentRateDescription
Primary Property Tax Rate2.5953%Base county rate for FY 2025-2026
Secondary Property Tax RateVariesGeneral Fund assessments
School District TaxesVaries by districtLocal school funding and bond payments
Fire District TaxesVaries by districtFire protection services
Special Assessment DistrictsVaries by locationInfrastructure improvements, lighting, etc.
Library DistrictsVaries by districtPublic library services

Note: The 2.5953% rate applies to the 2025 levy year and is subject to change based on budget approvals. Your actual tax rate will include additional assessments from special taxing districts serving your property location. Contact the La Paz County Assessor's Office for district-specific rate information.

Section 3

When Are Property Taxes Due?

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

First Installment
Oct 1
Delinquent after Dec 10
Second Installment
Mar 1
Delinquent after Apr 10
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 property taxes are additional assessments that occur when there's a change in property ownership, completion of new construction, or significant property improvements during the tax year. Unlike regular property taxes that are assessed annually, supplemental taxes are prorated based on the number of months remaining in the fiscal year when the triggering event occurs.

For example, if you purchase a home in La Paz County in January and the previous assessment was lower than the current market value, you'll receive a supplemental tax bill covering the difference for the remaining months of that fiscal year. Similarly, if you complete a home addition or major renovation, the increased assessed value will generate a supplemental bill. These supplemental assessments are calculated using the same tax rate that applies to your property's regular assessment, but only for the portion of the year following the change.

Example Calculation

Example 1: $300,000 Home

  • Market Value: $300,000
  • Assessed Value (10% of market): $30,000
  • Less: Homestead Credit (if applicable): -$3,000
  • Net Taxable Value: $27,000
  • Annual Tax (2.5953% rate): $701
  • Monthly Escrow: $58

Example 2: $600,000 Home

  • Market Value: $600,000
  • Assessed Value (10% of market): $60,000
  • Less: Homestead Credit (if applicable): -$3,000
  • Net Taxable Value: $57,000
  • Annual Tax (2.5953% rate): $1,479
  • Monthly Escrow: $123

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Assessed Value (10% of market): $100,000
  • Less: Homestead Credit (if applicable): -$3,000
  • Net Taxable Value: $97,000
  • Annual Tax (2.5953% rate): $2,517
  • Monthly Escrow: $210

Note: These examples assume basic county rates and a standard homestead credit. Actual taxes will vary based on special district assessments in your area. Credits require annual application and are not automatically applied.

See How Taxes Affect Your Payment

Property taxes are just part of your total monthly cost. Get the full picture.

Calculate Now
Section 5

Escrow & Property Taxes

Most mortgage lenders in La Paz County require borrowers to maintain an escrow account for property tax payments, particularly when the loan-to-value ratio exceeds 80%. Your lender will collect monthly escrow payments as part of your mortgage payment, typically calculated by dividing your annual property tax bill by 12 and adding a small cushion for rate increases.

Property taxes in La Paz County are due in two installments: the first half is due October 1st, and the second half is due the following spring. Your lender will make these payments directly to the La Paz County Treasurer's Office when they become due. You'll receive an annual escrow analysis statement showing how your payments were applied and any adjustments needed for the coming year. It's important to review your property tax statements even when using escrow to verify that payments were made correctly and to stay informed about any changes in your assessment or applicable tax credits.

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

When are property taxes due in La Paz County? For the 2025-2026 fiscal year, the first half of property taxes is due October 1, 2025. The second installment due date will be announced by the Treasurer's Office, typically in the spring of 2026.

What tax credits are available and do they require application? Arizona offers several tax credits that reduce your tax bill, including the homestead credit for primary residences and credits for seniors, disabled veterans, and certain nonprofit properties. All credits require annual application through the La Paz County Assessor's Office and are not automatically applied.

How does the homestead credit work? The homestead credit limits annual assessment increases on your primary residence to 10% or less, rather than reducing the market value. You must file an application with the Assessor's Office to receive this credit, and it must be renewed periodically.

When does the county assess properties? La Paz County conducts property assessments annually, with assessment notices typically mailed in early spring. Property values are assessed as of January 1st for the upcoming tax year.

How do I appeal my property assessment? You can appeal your assessment by filing a petition with the La Paz County Board of Equalization. Appeals must be filed within 60 days of receiving your assessment notice.

What are the penalties for late payment? Late payments incur interest charges and penalties. After December 31st, delinquent taxes accrue interest at a rate of 1% per month until paid in full.

Can I pay my property taxes online? Yes, the La Paz County Treasurer's Office offers online payment options through their official website. You can pay by electronic check or credit card, though credit card payments may include processing fees.

Why do tax rates vary within La Paz County? Property tax rates vary based on the special taxing districts that serve your property, such as school districts, fire districts, and improvement districts. Properties in areas with more services typically have higher overall tax rates.

What triggers a supplemental tax assessment? Supplemental taxes are triggered by ownership changes, completion of new construction, major improvements, or other events that change the property's assessed value during the tax year.

How do I verify my property's taxing districts? Contact the La Paz County Assessor's Office or check your property tax statement, which lists all applicable taxing districts and their individual rates for your specific property location.

See the Full Picture of Your Home Costs

Property taxes are just one piece of homeownership. HonestCasa helps you understand your total monthly cost and explore safe ways to access your home equity.

Total Monthly Cost

Mortgage + taxes + insurance + HOA

Equity Growth

Track how your equity grows over time

Safe Equity Access

Options for projects or debt payoff

Free • No credit check • 2-minute estimate