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Updated 2025 Tax Year

Austin County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
2.2% to 2.8% total (varies by jurisdiction - county, school district, MUDs, cities)
1st Due
Jan 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Austin County, Texas operates under the state's property tax system, which serves as the primary funding mechanism for local government services including schools, county operations, emergency services, and infrastructure maintenance. Property taxes in Austin County are assessed based on the appraised value of real estate and personal property as of January 1st each year, with the Austin County Appraisal District responsible for determining property valuations.

The effective property tax rate in Austin County varies significantly by location within the county due to overlapping taxing jurisdictions including the county government, school districts, cities, municipal utility districts (MUDs), and other special purpose districts. Total rates typically range from approximately 2.2% to 2.8% of assessed value depending on your specific location and the combination of taxing entities that serve your property. Texas law provides several tax relief mechanisms, including homestead exemptions that can reduce your taxable value by up to $100,000 for school district taxes, plus a 10% annual cap on assessment increases for homestead properties.

Section 2

What Makes Up Your Tax Bill

ComponentRate RangeDescription
Austin County~0.45-0.50%County general fund, road maintenance, courthouse operations
School Districts~1.20-1.35%Local school district operations and debt service
Cities~0.25-0.45%Municipal services (varies by incorporated area)
Emergency Services District~0.08-0.10%Fire protection and emergency medical services
Municipal Utility Districts~0.35-0.75%Water, sewer, drainage infrastructure (if applicable)
Other Special Districts~0.05-0.15%Hospital districts, community college, other local services

Rates shown are estimates for FY 2024-2025. Austin County is proposing rate adjustments for the 2025 tax year with final rates to be determined. Your actual total rate depends on your property's specific location and which taxing jurisdictions serve your area. Contact the Austin County Appraisal District at (979) 865-5911 for your property's exact taxing entities and current rates.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Austin 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 Austin County occur when there are mid-year changes to property ownership, new construction completion, or significant property improvements that alter the assessed value after the January 1st assessment date. When you purchase property, complete new construction, or finish major renovations, the appraisal district may issue a supplemental assessment to account for the value change during the current tax year.

The supplemental tax is calculated by determining the difference between the old and new assessed values, applying the appropriate tax rate, and prorating the additional tax based on the number of months remaining in the tax year. For example, if you complete a $100,000 home addition in July and your total tax rate is 2.5%, the supplemental tax would be approximately $1,250 (the additional value) × 0.025 (tax rate) × 6/12 (months remaining) = $625. This supplemental bill is typically issued within 30-60 days of the triggering event and has its own payment deadline separate from your regular January 31st property tax due date.

Example Calculation

Example 1: $300,000 Home with Homestead Exemption

  • Market Value: $300,000
  • School Homestead Exemption: -$100,000
  • Taxable Value (School): $200,000 | Taxable Value (Other): $300,000
  • Annual Tax: ~$5,500 (varies by district combination)
  • Monthly Escrow: ~$458

Example 2: $600,000 Home with Homestead Exemption

  • Market Value: $600,000
  • School Homestead Exemption: -$100,000
  • Taxable Value (School): $500,000 | Taxable Value (Other): $600,000
  • Annual Tax: ~$13,750 (varies by district combination)
  • Monthly Escrow: ~$1,146

Example 3: $1,000,000 Home with Homestead Exemption

  • Market Value: $1,000,000
  • School Homestead Exemption: -$100,000
  • Taxable Value (School): $900,000 | Taxable Value (Other): $1,000,000
  • Annual Tax: ~$24,250 (varies by district combination)
  • Monthly Escrow: ~$2,021

Note: Homestead exemptions require annual application and only apply to your primary residence. Additional exemptions may be available for seniors (65+), disabled persons, and veterans - all requiring separate applications with specific deadlines.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Austin County require property tax escrow accounts to ensure timely payment of property taxes. Your lender collects a monthly amount (typically 1/12th of your estimated annual tax bill plus a cushion) and deposits these funds into an escrow account. The lender pays your property taxes directly to Austin County when they become due on January 31st each year.

Lenders typically conduct annual escrow analyses to adjust your monthly payment based on actual tax bills and account for any changes in assessed value or tax rates. If your taxes increase significantly due to rising property values or rate changes, you may face an escrow shortage requiring either a lump sum payment or increased monthly payments. You have the right to review your escrow account annually and can contact your lender to verify that taxes are being paid correctly. If you pay your own property taxes (no escrow), you're responsible for ensuring payment reaches Austin County by the January 31st deadline to avoid penalties and interest charges.

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 Austin County property taxes due for the current fiscal year? A: Property taxes are due January 31st each year. For the 2024 tax year, payment is due by January 31, 2025. Business property tax renditions must be filed by April 15th.

Q: What homestead tax relief is available and how do I apply? A: The homestead exemption provides up to $100,000 reduction in taxable value for school district taxes and caps annual assessment increases at 10%. You must file an application with the Austin County Appraisal District by April 30th of the first year you qualify. This applies only to your primary residence.

Q: Are there additional tax credits for seniors, veterans, or disabled persons? A: Yes, additional exemptions are available: seniors 65+ may qualify for additional exemptions and tax freezes, disabled persons can receive exemptions, and veterans or their survivors may qualify for various exemptions. Each requires a separate application with specific documentation and deadlines.

Q: How often are properties reassessed in Austin County? A: Properties are appraised annually as of January 1st. However, homestead properties benefit from a 10% cap on assessment increases, meaning your assessed value for tax purposes cannot increase more than 10% per year regardless of market value changes.

Q: How do I appeal my property assessment? A: You can protest your appraisal with the Austin County Appraisal Review Board. Protests must typically be filed by May 15th (or within 30 days of receiving your notice). Contact the Austin County Appraisal District at (979) 865-5911 for protest forms and procedures.

Q: What happens if I pay my property taxes late? A: Taxes not paid by January 31st incur penalties and interest. Penalty is 6% if paid in February, 7% in March, 8% in April, 9% in May, 10% in June, and 12% in July and thereafter, plus annual interest charges.

Q: Can I pay my Austin County property taxes online? A: Yes, most Austin County taxing entities offer online payment options. Contact your specific tax collector or visit the Austin County website for available payment methods, which typically include online payments, mail, and in-person options.

Q: Why did my tax bill increase if tax rates didn't change? A: Tax increases typically result from rising property assessments due to increased market values, completion of new construction or improvements, or changes in exemption eligibility. Even with the homestead 10% cap, taxes can still increase if your property's assessed value rises.

Q: How do special districts like MUDs affect my tax bill? A: Municipal Utility Districts and other special purpose districts add their own tax rates to your bill. These can range from 0.35% to over 1.0% depending on the district's debt and operational needs. Your total tax rate is the sum of all applicable taxing jurisdictions serving your property location.

Q: Do I need to reapply for exemptions each year? A: Most exemptions, once approved, continue automatically as long as you remain eligible and the property use doesn't change. However, you must notify the appraisal district of any changes in eligibility, and some exemptions may require periodic re-verification or renewal applications.

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