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Updated 2025 Tax Year

Dimmit County
Property Tax Guide

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

8 Official Sources
8 min read
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Quick Facts
Tax Rate
Approximately 1.8% effective rate, varies by location due to different taxing district combinations
1st Due
Jan 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Dimmit County, Texas operates under the state's property tax system to fund essential local services including schools, county operations, emergency services, and infrastructure maintenance. Property taxes are assessed annually based on the market value of real estate as determined by the Dimmit County Appraisal District, with tax rates set by various local taxing entities including the county, school districts, cities, and special districts.

The effective tax rate in Dimmit County typically ranges around 1.8% of assessed value, though actual rates vary significantly depending on your specific location within the county due to different combinations of taxing districts. Property owners may be eligible for various tax credits and exemptions that can reduce their tax burden, but most require formal application and are not automatically applied. The Texas Property Tax Code governs assessment procedures, including the important 10% annual assessment increase cap for homestead properties.

Section 2

What Makes Up Your Tax Bill

Note: Tax rates vary by location within Dimmit County based on which taxing districts serve your property. Contact the Dimmit County Appraisal District for your specific rate combination.

ComponentTypical Rate RangeDescription
County General Fund$0.35-$0.50 per $100County operations, law enforcement, courts
School District$1.00-$1.35 per $100Local school district operations and debt service
City (if applicable)$0.20-$0.60 per $100Municipal services (varies by city)
Emergency Services District$0.05-$0.10 per $100Fire and EMS services
Water/Utility Districts$0.02-$0.15 per $100Water, sewer infrastructure (where applicable)
Total Typical Range$1.62-$2.70 per $100Combined effective rate

Rates shown are estimates for planning purposes. Actual FY 2024-2025 rates vary by specific taxing district combination.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Dimmit 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 Texas are typically triggered by new construction, substantial improvements, or changes in property ownership that result in a reassessment of property value during the tax year. When improvements are completed or ownership transfers occur, the Dimmit County Appraisal District may issue a supplemental assessment to capture the increased value for the remaining portion of the tax year.

For example, if you complete a $50,000 home addition in June, and your property is in an area with a 2.0% effective tax rate, you would owe approximately $500 in supplemental taxes ($50,000 × 0.02 × 0.5 years remaining). The supplemental bill is calculated on a pro-rated basis from the date the improvement was completed through January 31st of the following year. These supplemental assessments are separate from your regular annual tax bill and have their own payment due dates.

Example Calculation

Example 1: $300,000 Home with Homestead

  • Market Value: $300,000
  • Less: Homestead Exemption: $100,000 (school district portion)
  • Net Taxable Value: $250,000 (school) / $300,000 (other districts)
  • Annual Tax (at 1.8% effective): ~$4,900
  • Monthly Escrow: ~$408

Example 2: $600,000 Home with Homestead and Over-65 Exemption

  • Market Value: $600,000
  • Less: Homestead Exemption: $100,000 (school district)
  • Less: Over-65 Additional Exemption: $10,000 (county/city, application required)
  • Net Taxable Value: ~$500,000 (school) / $590,000 (other)
  • Annual Tax (at 1.8% effective): ~$9,620
  • Monthly Escrow: ~$802

Example 3: $1,000,000 Home with Available Credits

  • Market Value: $1,000,000
  • Less: Homestead Exemption: $100,000 (school district, application required)
  • Net Taxable Value: $900,000 (school) / $1,000,000 (other)
  • Annual Tax (at 1.8% effective): ~$17,200
  • Monthly Escrow: ~$1,433

All examples assume applications filed for applicable credits. Actual rates vary by location within the county.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Dimmit County require property tax escrow accounts, collecting monthly payments alongside your mortgage payment to ensure taxes are paid on time. Your lender will analyze your annual tax bill and divide it by 12, often adding a cushion for potential increases. Escrow payments are typically adjusted annually after your tax bill is received.

Texas property taxes are due January 31st each year for the previous year's assessment, and lenders usually pay directly from your escrow account by this deadline. You should receive an annual escrow analysis statement showing how your payments were used and any adjustments needed for the coming year. If your taxes increase due to rising property values or rate changes, your monthly escrow payment may increase accordingly. Property owners can verify that their lender paid the correct amount by checking with the Dimmit County Tax Assessor-Collector's office.

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 Dimmit County? A: Property taxes for the 2024 tax year are due January 31, 2025. Texas allows a single payment system, though some taxing units may offer split payment options.

Q: What tax credits are available and how do I apply? A: The primary credit is the $100,000 homestead exemption for school district taxes (application required). Additional credits may include over-65 exemptions, disability exemptions, and veteran exemptions. Applications must be filed with the Dimmit County Appraisal District, typically by April 30th.

Q: How does the homestead exemption work? A: The homestead exemption provides a $100,000 reduction in assessed value for school district taxes and caps annual assessment increases at 10%. You must file an application with the appraisal district - it's not automatic.

Q: When are properties reassessed? A: Properties are assessed annually as of January 1st. The Dimmit County Appraisal District mails assessment notices typically in April-May, with appeals due by May 31st or within 30 days of receiving your notice.

Q: What are the penalties for late payment? A: Texas law imposes penalty and interest charges on delinquent taxes: 6% penalty if paid in February, 7% in March, 8% in April, and additional penalties thereafter, plus 1% interest per month.

Q: Can I pay my taxes online? A: Contact the Dimmit County Tax Assessor-Collector's office to confirm available online payment options and any associated convenience fees.

Q: Why did my tax bill increase if rates stayed the same? A: Tax increases can result from rising property values, new special district assessments, or expiration of temporary exemptions. The 10% homestead cap limits increases for qualifying homeowners.

Q: How do special district taxes work? A: Special districts (emergency services, water, hospital, etc.) can add their own tax rates to your bill. Which districts apply to your property depends on your specific location within the county and what services are provided to your area.

Verified Sources

Backed by 8 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
School District Rates and Levies (XLSX)comptroller.texas.gov
02
County
County Rates and Levies (XLSX)comptroller.texas.gov
03
Tax Doc
City Sales and Use Taxcomptroller.texas.gov
04
Tax Doc
96-1717 Handbook of Texas Property Tax Rulescomptroller.texas.gov
05
Tax Doc
Property Tax Today - Texas Comptrollercomptroller.texas.gov
06
Tax Doc
Property Tax Today - Texas Comptrollercomptroller.texas.gov
07
Dimmit Central Appraisal Districtcomptroller.texas.gov
08
DIMMIT CENTRAL APPRAISAL DISTRICT REAPPRAISAL ...comptroller.texas.gov
All sources verified as of 2025 Tax Year

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