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Updated 2025 Tax Year

Lamar County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
2.0%-2.8% of assessed value (varies by taxing entities and location within county)
1st Due
Jan 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Lamar 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 in Lamar County are calculated based on the assessed value of real estate and personal property, with rates varying significantly by location within the county due to different combinations of taxing entities including school districts, municipalities, and special districts.

The effective tax rate in Lamar County typically ranges from 2.0% to 2.8% of assessed value, depending on your specific location and the taxing entities that serve your property. For the 2025-2026 tax year, Lamar County has approved a budget that increases property tax revenue by 9.2% ($1,558,649) compared to the previous year. Property owners should note that actual tax bills depend on both the tax rates set by various local governments and any applicable tax credits or exemptions, most of which require annual application and are not automatically applied.

Section 2

What Makes Up Your Tax Bill

ComponentEstimated RateDescription
Lamar County General0.45% - 0.55%County operations, roads, law enforcement
School District1.20% - 1.40%Public education (varies by district)
Municipal0.25% - 0.45%City services (if within city limits)
Emergency Services0.05% - 0.10%Fire/EMS districts
Special Districts0.05% - 0.25%Water, hospital, utility districts
Total Estimated2.00% - 2.75%Combined rate varies by location

Rates shown are estimates for FY 2025-2026 and vary significantly based on your property's specific location and the combination of taxing entities that serve it. The county portion reflects the approved 9.2% budget increase. Contact the Lamar County Appraisal District for exact rates applicable to your property.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Lamar 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 Lamar County are additional property tax assessments that occur when there are changes in property ownership, value, or use during the tax year. Common triggers include the sale of property to a new owner, completion of new construction or major improvements, changes in exemption status, or correction of assessment errors discovered mid-year.

When a supplemental assessment is issued, it covers the period from the effective date of the change through the end of the current tax year (September 30). For example, if you purchase a home in Lamar County on June 1st and the previous owner had a homestead exemption that you don't qualify for, a supplemental tax bill would be calculated for the difference in taxable value from June 1st through September 30th. The calculation takes the change in assessed value, multiplies it by the applicable tax rate, then prorates it for the remaining months in the tax year.

Example Calculation

Example 1: $300,000 Home with Homestead Exemption

  • Market Value: $300,000
  • School District Homestead Exemption: -$100,000
  • Net Taxable Value: $200,000
  • Tax Rate (estimated): 2.25%
  • Annual Tax: $4,500
  • Monthly Escrow: $375

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

  • Market Value: $600,000
  • School District Homestead Exemption: -$100,000
  • Over-65 Additional Exemption: -$10,000
  • Net Taxable Value: $490,000
  • Tax Rate (estimated): 2.35%
  • Annual Tax: $11,515
  • Monthly Escrow: $959

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

  • Market Value: $1,000,000
  • No Exemptions Applied: $0
  • Net Taxable Value: $1,000,000
  • Tax Rate (estimated): 2.45%
  • Annual Tax: $24,500
  • Monthly Escrow: $2,042

Note: All exemptions require annual application and approval. Rates vary by specific location within Lamar County.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Lamar County require property tax escrow accounts, where you pay 1/12 of your estimated annual tax bill with each monthly mortgage payment. Your lender collects these funds and pays your property taxes directly to the tax collector when due. Lenders typically maintain a cushion of 2-6 months of tax payments in your escrow account to ensure adequate funds are available.

Property taxes in Lamar County are paid on a split payment schedule: the first payment is due by January 31st, with subsequent quarterly payments due by April 14th, July 31st, and October 15th. Your lender will make these payments on your behalf from your escrow account. Each year, your lender must provide an escrow analysis showing how your tax payments and account balance have changed, and they may adjust your monthly escrow payment accordingly. It's important to review your annual tax statements and escrow analysis to ensure accuracy, as assessment changes or new exemptions you've applied for may affect your required escrow payments.

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 Lamar County? A: For the 2025-2026 tax year, payments are due quarterly: first payment by January 31st, second by April 14th, third by July 31st, and final payment by October 15th. The tax year runs from October 1st to September 30th.

Q: What tax exemptions are available and do they apply automatically? A: No exemptions are automatic - all require application. The primary exemption is the homestead exemption providing $100,000 off assessed value for school district taxes on your primary residence. Additional exemptions may be available for seniors over 65, disabled veterans, and disabled persons. Applications must be filed with the Lamar County Appraisal District annually.

Q: How does the homestead exemption work? A: The homestead exemption provides two benefits: 1) $100,000 reduction in taxable value for school taxes, and 2) caps annual assessment increases at 10% for your primary residence. This cap limits how much your assessed value can increase each year, providing property tax stability. You must apply for homestead exemption - it's not automatic.

Q: When can I apply for exemptions and what's the deadline? A: Exemption applications are generally due by April 30th following the tax year. For new homeowners, you typically have until one year after the delinquency date to apply. Contact the Lamar County Appraisal District at the earliest opportunity to ensure timely filing.

Q: How do I appeal my property assessment? A: Property owners can protest their assessed values through the Lamar County Appraisal Review Board. Protest deadlines are typically in May, about 30 days after appraisal notices are mailed. You can file protests online, by mail, or in person with supporting documentation.

Q: What are the penalties for late property tax payments? A: Late payments incur penalties and interest charges. Penalties start at 6% for the first month late and increase monthly, plus interest charges. After several months of delinquency, additional attorney fees and costs may be added.

Q: Can I pay my property taxes online? A: Yes, Lamar County typically offers online payment options through the tax collector's website. Payment methods usually include credit cards, debit cards, and electronic checks, though convenience fees may apply for card payments.

Q: Why do tax rates vary within Lamar County? A: Tax rates vary because different areas are served by different combinations of taxing entities. For example, properties within city limits pay municipal taxes while rural properties don't. Different school districts, hospital districts, and special utility or emergency service districts create varying total tax rates across the county.

Q: How often are properties reappraised? A: Texas law requires annual appraisals, but the Lamar County Appraisal District may physically inspect properties on a rotating cycle. Market values are updated annually based on sales data, cost estimates, and market analysis. Homestead properties benefit from the 10% annual increase cap regardless of market value changes.

Q: What happens if I disagree with a supplemental tax assessment? A: You can protest supplemental assessments just like regular assessments. Contact the Lamar County Appraisal District immediately to understand the reason for the supplemental bill and your protest rights. Time limits for protests apply, so act quickly if you believe the assessment is incorrect.

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