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Updated 2025 Tax Year

Grimes County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
County rate ~$0.44 per $100 assessed value, total rate varies by school district and municipal overlays
1st Due
Jan 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Grimes County, Texas operates under the state's property tax system, where property taxes serve as the primary funding source for essential local services including schools, county operations, emergency services, and infrastructure maintenance. Property owners in Grimes County pay taxes to multiple jurisdictions simultaneously, including the county, school districts, municipal governments (if applicable), and various special districts such as emergency services districts or municipal utility districts.

The effective property tax rate in Grimes County varies significantly depending on your specific location within the county due to the overlay of different taxing jurisdictions. Based on current data, the county portion is approximately $0.44 per $100 of assessed value, but your total rate will be higher when combined with school district taxes (which carry a $100,000 homestead exemption for primary residences), city taxes (if within city limits), and special district assessments. Texas law caps annual assessment increases at 10% for homestead properties, providing some protection against rapidly rising property values.

Section 2

What Makes Up Your Tax Bill

ComponentRate (per $100)Description
Grimes County$0.440000County general operations, roads, law enforcement
School DistrictsVaries by districtLocal school funding (typically $1.00-$1.30 per $100)
CitiesVaries by municipalityMunicipal services (if within city limits)
Emergency Services DistrictsVaries by districtFire and EMS services
Special DistrictsVaries by districtWater, sewer, hospital, or other special services

Note: These rates apply to the FY 2025 tax year. The county rate shown is proposed and subject to final adoption. Your total effective rate depends on which taxing jurisdictions serve your specific property location within Grimes County. Contact the Grimes County Appraisal District for your property's complete rate breakdown.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Grimes 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 relatively uncommon compared to other states, as Texas primarily operates on an annual assessment cycle. However, supplemental assessments may occur when new construction is completed and added to the tax roll mid-year, or when property improvements significantly increase a property's value during the tax year. When this happens, a prorated tax bill is calculated 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 $2.50 per $100 of assessed value, you would owe approximately $1,250 × (5 months remaining ÷ 12 months) = $520 in supplemental taxes for that year. The improvement would then be included in your regular assessment for the following complete 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
  • Estimated Total Tax Rate: $2.44 per $100
  • Annual Tax: $4,880
  • Monthly (if escrowed): $407

Example 2: $600,000 Home with Homestead Exemption

  • Market Value: $600,000
  • School District Homestead Exemption: -$100,000
  • Net Taxable Value: $500,000
  • Estimated Total Tax Rate: $2.44 per $100
  • Annual Tax: $12,200
  • Monthly (if escrowed): $1,017

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
  • Estimated Total Tax Rate: $2.44 per $100
  • Annual Tax: $21,960
  • Monthly (if escrowed): $1,830

Note: Homestead exemptions require annual application and only apply to your primary residence. The 10% assessment cap also applies to homestead properties, limiting annual taxable value increases.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Grimes County require borrowers to maintain an escrow account for property tax payments, particularly when the loan-to-value ratio exceeds 80%. Your lender collects monthly payments equal to 1/12th of your estimated annual property tax bill, holds these funds in a separate escrow account, and pays your taxes directly to the tax collector when due.

Property taxes in Texas are typically due by January 31st of the year following the tax year, though some jurisdictions may offer split payment options with installments due by different dates (such as May 1st and September 1st as indicated in some Grimes County areas). Your lender will receive tax bills directly and handle payment timing. The lender must provide an annual escrow analysis showing deposits, payments, and any required adjustments to your monthly escrow amount. If your property taxes increase significantly due to rising assessments or rate changes, expect your monthly mortgage payment to adjust accordingly during the annual escrow review.

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 Grimes County for the current tax year? A: Based on available information, Grimes County appears to offer split payment options with installments due by May 1st and September 1st, though this may vary by taxing jurisdiction within the county. Contact the Grimes County Tax Collector for definitive due dates for your specific property.

Q: What homestead exemptions are available and how do I apply? A: The primary exemption is the $100,000 school district homestead exemption for your primary residence, which reduces your taxable value for school tax purposes. You must apply with the Grimes County Appraisal District, and applications are typically due by April 30th. This is not automatic and must be filed when you first establish homestead status.

Q: How does the 10% assessment cap work for homestead properties? A: Texas law limits annual increases in taxable value to 10% for homestead properties, regardless of market value increases. This cap applies only to the taxable value for tax calculation purposes - it doesn't change your property's actual market value. You must have a valid homestead exemption to qualify for this protection.

Q: When does the county reassess properties? A: Texas requires annual property assessments. The Grimes County Appraisal District typically conducts assessments based on market value as of January 1st each year, with assessment notices mailed by April or May.

Q: How do I appeal my property assessment? A: File a protest with the Grimes County Appraisal Review Board by May 31st (or within 30 days of receiving your notice if mailed late). You can protest online, by mail, or in person. Informal hearings are often available to resolve disputes without formal proceedings.

Q: What are the penalties for late property tax payments? A: Texas law allows for penalty and interest charges on delinquent property taxes. Penalties typically start at 6% for the first month late, with additional interest charges accruing monthly. Properties can eventually face tax foreclosure for extended delinquency.

Q: Can I pay my property taxes online? A: Most Texas counties offer online payment options through their tax collector's website. Check the Grimes County Tax Collector's official website for available payment methods, which typically include credit cards, electronic checks, and ACH transfers.

Q: Do special districts within Grimes County add to my tax bill? A: Yes, depending on your location, you may pay additional taxes to emergency services districts, municipal utility districts, hospital districts, or other special purpose districts. These appear as separate line items on your tax bill and can vary significantly between different areas of the county. Your total tax rate is the sum of all applicable jurisdictions serving your property.

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