HonestCasa logoHonestCasa
Updated 2025 Tax Year

Starr County
Property Tax Guide

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

9 Official Sources
8 min read
Quick Facts
Tax Rate
0.7224% base rate for 2025, varies by district due to special taxing entities
1st Due
Jan 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Starr County, Texas operates under the state's property tax system, which serves as the primary funding mechanism for local government services, schools, and special districts. Property taxes in Starr County fund essential services including public education, county operations, emergency services, and infrastructure maintenance. The county's property tax rate of 0.7224% for 2025 is significantly lower than the Texas state average of approximately 1.8%, making it one of the more affordable counties for property taxation in the state.

Actual tax rates vary by location within Starr County due to the presence of different special taxing districts, including school districts, municipal utility districts, and other local governmental entities. Property owners should verify their specific tax rate based on their exact location, as rates can differ between cities, school districts, and special service areas within the county. The Starr County Appraisal District determines property values, while individual taxing entities set their respective tax rates to generate needed revenue for operations.

Section 2

What Makes Up Your Tax Bill

ComponentRateDescription
Total County-Wide Rate0.7224%Combined rate for FY 2025-2026
County OperationsVariesBasic county services and administration
School DistrictVariesLocal school district operations and debt service
MunicipalVariesCity services (where applicable)
Special DistrictsVariesEmergency services, utility districts, other local entities

Note: The 0.7224% represents the total combined rate for areas within the county's primary taxing jurisdiction. Rates may vary significantly based on which school district, city, and special districts serve your specific property location. Recent years have shown rates of 0.7204% and 0.7106%, indicating some fluctuation in local tax rates. Property owners should verify their exact rate combination through the Starr County Appraisal District based on their property's specific location and applicable taxing entities.

Section 3

When Are Property Taxes Due?

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

First Installment
Jan 31
Delinquent after Dec 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 taxes in Starr County are triggered by changes in property ownership, new construction, or significant property improvements that occur after the annual assessment date. When these triggering events happen, the county appraisal district conducts a supplemental assessment to capture the change in property value or ownership status. The supplemental tax represents the difference between what was originally assessed and what should have been assessed given the change.

For example, if a property owner completes a major home addition worth $50,000 in March after the January assessment date, a supplemental assessment would be conducted. The additional tax would be calculated by applying the current tax rate (0.7224%) to the $50,000 improvement value, then prorated for the remaining months of the tax year. This would result in an additional tax of approximately $361 ($50,000 × 0.007224), prorated for the 10 remaining months, equaling about $301 in supplemental taxes due.

Example Calculation

Example 1: $300,000 Property

  • Market Value: $300,000
  • Homestead Exemption Applied: -$100,000 (school district portion)
  • Net Taxable Value: $200,000
  • Annual Tax: $200,000 × 0.007224 = $1,445
  • Monthly Escrow: $120

Example 2: $600,000 Property

  • Market Value: $600,000
  • Homestead Exemption Applied: -$100,000 (school district portion)
  • Net Taxable Value: $500,000
  • Annual Tax: $500,000 × 0.007224 = $3,612
  • Monthly Escrow: $301

Example 3: $1,000,000 Property

  • Market Value: $1,000,000
  • Homestead Exemption Applied: -$100,000 (school district portion)
  • Net Taxable Value: $900,000
  • Annual Tax: $900,000 × 0.007224 = $6,502
  • Monthly Escrow: $542

Note: The homestead exemption requires application and applies only to primary residences. Additional exemptions may be available for seniors, disabled veterans, and other qualifying circumstances, but require separate applications with specific deadlines.

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 Starr County require property tax escrow accounts to ensure timely payment of property taxes. Lenders collect monthly escrow payments as part of your mortgage payment, typically calculated as your annual tax bill divided by 12 months, plus a cushion amount. The escrow account is managed by your lender, who pays your property taxes directly to Starr County when they become due.

Property tax payments in Starr County follow a split payment schedule, with the first installment due by October 15 and subsequent payments due by March 15 and September 15. Lenders typically pay from escrow accounts before these deadlines to avoid penalties. Property owners should receive an annual escrow analysis from their lender showing the account balance, payments made, and any adjustments needed for the following year. If your escrow payment increases, it's usually due to higher property assessments or increased tax rates, and the lender will notify you of payment changes.

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 Starr County for the current fiscal year? A: Property taxes are due in installments: first payment by October 15, second payment by March 15, and final payment by September 15. Late payments incur penalties and interest charges.

Q: What tax credits are available and do I need to apply? A: The primary tax benefit is the homestead exemption providing $100,000 reduction in assessed value for school taxes. This requires application with the Starr County Appraisal District. Additional exemptions may be available for seniors (65+), disabled veterans, and disabled persons, all requiring separate applications.

Q: How does the homestead exemption work? A: The homestead exemption reduces your property's assessed value by up to $100,000 for school district taxes and caps annual assessment increases at 10%. You must apply with the appraisal district and the property must be your primary residence as of January 1.

Q: When can I apply for exemptions and what's the deadline? A: Applications for most exemptions must be filed by April 30 of the tax year, though late applications may be accepted with penalties. Contact the Starr County Appraisal District for specific forms and deadlines.

Q: How often are properties reassessed? A: Properties are assessed annually as of January 1. The Starr County Appraisal District reviews property values each year, though homestead properties are protected by the 10% annual increase cap.

Q: How do I appeal my property assessment? A: You can protest your property value with the Starr County Appraisal Review Board. Protests must typically be filed by May 31, and you'll receive notice of your right to protest with your annual assessment notice.

Q: What penalties apply to late payments? A: Late payments incur penalty and interest charges. Delinquent taxes also result in additional collection costs and potential tax lien proceedings if left unpaid.

Q: Can I pay my property taxes online? A: Contact the Starr County Tax Assessor-Collector's office for current online payment options and accepted payment methods. Many Texas counties offer online payment systems for property taxes.

Q: How do special districts affect my tax rate? A: Your total tax rate depends on which school district, city, and special districts (like emergency services or utility districts) serve your property. The 0.7224% base rate may be higher or lower depending on your specific location within the county.

Q: What happens if I don't escrow property taxes? A: If you pay taxes directly, you're responsible for meeting all deadlines. Missing payments can result in penalties, interest, and eventual tax lien foreclosure proceedings by the county.

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