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Updated 2025 Tax Year

Robertson County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
$0.45-$0.75 per $100 assessed value, varies by school district and municipality
1st Due
Jan 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Robertson County, Texas operates under the state's property tax system, where property taxes are the primary funding source for essential local services including public schools, county government operations, emergency services, and infrastructure maintenance. The county's effective tax rate typically ranges from approximately $0.45 to $0.75 per $100 of assessed valuation, depending on your specific location within the county and the various taxing districts that serve your property.

Property tax rates in Robertson County vary significantly by location due to multiple overlapping taxing jurisdictions, including the county itself, school districts (such as Mumford ISD and others), municipal governments, and special districts for services like emergency services, water, or hospital districts. Each property owner's total tax bill represents the combined rates of all applicable taxing entities. The county follows Texas state law requiring annual property reappraisals, though homestead properties benefit from a 10% annual assessment increase cap that helps provide predictability for homeowners.

Section 2

What Makes Up Your Tax Bill

ComponentRate (per $100 valuation)Description
Robertson County$0.45435County operations, roads, law enforcement, courts
School DistrictsVaries by districtPublic education funding (varies by specific school district)
Emergency Services DistrictVaries by locationFire and emergency medical services
Municipal TaxesVaries by cityCity services (only if within city limits)
Hospital DistrictVaries if applicablePublic healthcare services
Water/Utility DistrictsVaries if applicableWater and utility infrastructure

Note: These rates apply to the FY 2025-2026 levy year. The county rate of $0.45435 represents the no-new-revenue rate that was under public review. Total effective rates typically range from $0.45-$0.75 per $100 valuation depending on your property's specific taxing districts. Contact the Robertson County Appraisal District for your property's exact taxing entity combination.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Robertson 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 Robertson County are additional property tax bills issued when there are mid-year changes to a property's assessed value or ownership status. The most common triggers include new construction completion, major property improvements, ownership transfers that remove existing exemptions, or corrections to the original assessment. These supplemental bills are calculated by applying the current year's tax rates to the difference between the old and new assessed values.

For example, if you complete a $100,000 home addition in March and your total tax rate is $0.60 per $100, you would receive a supplemental tax bill for approximately $600 ($100,000 ÷ 100 × $0.60) prorated for the remaining months of the tax year. Supplemental taxes are typically due within 30 days of the bill date and become delinquent if not paid by the specified due date, subject to the same penalties and interest as regular property taxes.

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: $0.60 per $100
  • Annual Tax: $1,200 ($200,000 ÷ 100 × $0.60)
  • Monthly Escrow: $100

Example 2: $600,000 Home with Homestead Exemption

  • Market Value: $600,000
  • School District Homestead Exemption: -$100,000
  • Net Taxable Value: $500,000
  • Tax Rate: $0.60 per $100
  • Annual Tax: $3,000 ($500,000 ÷ 100 × $0.60)
  • Monthly Escrow: $250

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

  • Market Value: $1,000,000
  • School District Homestead Exemption: -$100,000
  • Net Taxable Value: $900,000
  • Tax Rate: $0.60 per $100
  • Annual Tax: $5,400 ($900,000 ÷ 100 × $0.60)
  • Monthly Escrow: $450

Note: Homestead exemption requires application and applies only to primary residences. Additional exemptions may be available for seniors, disabled veterans, and other qualifying circumstances, all requiring separate applications.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Robertson County require borrowers to establish an escrow account for property tax payments, particularly for loans with less than 20% down payment. Your lender collects monthly escrow payments along with your mortgage payment, typically calculating 1/12th of your estimated annual property tax bill. The lender then pays your property taxes directly to Robertson County when they become due.

Lenders typically conduct annual escrow analyses to ensure adequate funds are collected, comparing actual tax bills to estimated amounts. If property taxes increase due to rising assessments or tax rates, your monthly escrow payment may increase accordingly. Property owners should verify that their lender pays taxes on time, as you remain ultimately responsible for tax payments even when using escrow. You can monitor your account and payments through the Robertson County Tax Assessor-Collector's office, and you have the right to receive copies of tax bills even when paid through escrow.

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 Robertson County property taxes due for FY 2025-2026? A: Based on available information, Robertson County appears to follow a split-payment schedule with the first installment due by April 30 and the second installment due by September 30, though this differs from the typical Texas January 31 deadline. Confirm current due dates with the Robertson County Tax Assessor-Collector's office.

Q: What homestead exemptions are available and do I need to apply? A: The primary homestead exemption provides up to $100,000 reduction in assessed value for school district taxes on your primary residence. You must apply for this exemption - it is not automatic. Additional exemptions may be available for seniors (65+), disabled persons, and disabled veterans, all requiring separate applications.

Q: How does the homestead exemption cap work? A: Texas homestead properties benefit from a 10% annual assessment increase cap, meaning your assessed value for tax purposes cannot increase more than 10% per year regardless of market value increases. This cap applies automatically to qualified homestead properties but you must file for homestead exemption status initially.

Q: What are the penalties for late property tax payments? A: Texas law typically imposes a 6% penalty on taxes paid after the due date, with an additional 1% interest charge per month. Penalties and interest compound, making early payment important to avoid substantial additional costs.

Q: Can I pay my property taxes online? A: Most Texas counties offer online payment options. Contact the Robertson County Tax Assessor-Collector's office to confirm available payment methods, which typically include online payments, mail, and in-person payments.

Q: How do I appeal my property assessment? A: Property owners can appeal their assessed value through the Robertson County Appraisal Review Board. Appeals must typically be filed by May 15 (or within 30 days of receiving your notice). Contact the Robertson County Appraisal District for specific appeal procedures and deadlines.

Q: Why do tax rates vary within Robertson County? A: Your total tax rate depends on all taxing entities serving your property, including school districts, emergency service districts, hospital districts, and municipal taxes if you're within city limits. Properties in different areas of the county are served by different combinations of these entities.

Q: Are there exemptions for agricultural or timber land? A: Texas offers agricultural and timber exemptions that can significantly reduce assessed values for qualifying properties. These require annual applications and must meet specific use requirements. Contact the Robertson County Appraisal District for agricultural exemption applications and requirements.

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