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Updated 2025 Tax Year

Grady County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
0.25% base county rate plus additional district millages (total varies by location)
1st Due
Oct 1
Exemptions
4+ Available
Section 1

How Property Tax Works

Grady County, Oklahoma operates under a property tax system that funds essential local services including schools, law enforcement, fire protection, and county infrastructure. Property taxes in Grady County are levied annually on October 1st based on the assessed value of real and personal property as of January 1st of that tax year. The county's base property tax rate is approximately 0.25%, though this represents only a portion of the total tax burden property owners face.

Actual property tax rates vary significantly by location within Grady County due to overlapping special taxing districts including school districts, municipal services, fire districts, and other local assessments. Property owners typically pay a combined rate that includes the county levy plus additional millages for their specific school district, municipality (if applicable), and any special service districts. The total effective rate generally ranges from 0.8% to 1.4% of assessed value, depending on the specific taxing districts that serve each property location.

Section 2

What Makes Up Your Tax Bill

ComponentRateDescription
County General0.25%Base Grady County operations and services
School DistrictsVariesLocal school district operations (rates vary by district)
MunicipalVariesCity/town services (if within municipal boundaries)
Career TechVariesVocational-technical education districts
Fire DistrictsVariesRural fire protection services
Other Special DistrictsVariesEmergency medical, library, or other local services

Rates shown are for FY 2025-2026 levy year. Total effective rates typically range from 0.8% to 1.4% depending on location within the county. Contact the Grady County Assessor for specific millage rates in your area, as these vary significantly by school district and special taxing districts.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Grady County, property taxes are due in two installments:

First Installment
Oct 1
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 Grady County are triggered by significant changes to property that occur after the January 1st assessment date but during the current tax year. The most common triggers include new construction completion, substantial improvements or additions to existing structures, changes in property ownership that remove exemptions, and corrections to assessment errors discovered during the tax year.

When supplemental taxes are assessed, they are calculated based on the difference between the old assessed value and the new assessed value, prorated for the portion of the tax year remaining after the change occurred. For example, if a $100,000 addition is completed and assessed in July (6 months remaining in the tax year), the supplemental tax would be calculated on the additional assessed value multiplied by the applicable tax rate, then multiplied by 0.5 (representing the 6 months remaining). Property owners receive a separate supplemental tax bill with payment due within 30 days of issuance.

Example Calculation

Example 1: $300,000 Home with Homestead Credit

  • Market Value: $300,000
  • Assessed Value (11.5%): $34,500
  • Less Homestead Credit: -$1,000 (application required)
  • Net Taxable Value: $33,500
  • Annual Tax (1.0% effective rate): $335
  • Monthly Escrow: $28

Example 2: $600,000 Home with Senior Homestead Credit

  • Market Value: $600,000
  • Assessed Value (11.5%): $69,000
  • Less Senior Homestead Credit: -$200,000 assessed value reduction (application required)
  • Net Taxable Value: $46,000
  • Annual Tax (1.2% effective rate): $552
  • Monthly Escrow: $46

Example 3: $1,000,000 Property (No Credits)

  • Market Value: $1,000,000
  • Assessed Value (11.5%): $115,000
  • Applied Credits: $0 (no applications filed)
  • Net Taxable Value: $115,000
  • Annual Tax (1.3% effective rate): $1,495
  • Monthly Escrow: $125

All credits require separate applications and approval. Rates vary by specific location within the county.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Grady County require borrowers to maintain an escrow account for property tax payments, particularly when the loan-to-value ratio exceeds 80%. Lenders collect monthly escrow payments as part of the mortgage payment, typically calculating 1/12th of the estimated annual tax bill plus a cushion amount. Since Grady County property taxes are due by October 1st with a payment deadline no later than 120 days thereafter (typically January 31st of the following year), lenders usually make payments in late December or January.

Property owners should verify that their lender has current tax information, especially after reassessments or when tax credits are added or removed. The Grady County Treasurer's office can provide verification of payments received and outstanding balances. Homeowners with escrow accounts should review their annual escrow analysis statement to ensure adequate funds are being collected, as tax rates and assessed values can change annually.

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 Grady County for FY 2025-2026? A: Property taxes are levied on October 1st and must be paid no later than 120 calendar days from that date, making the deadline January 31, 2026 for the current tax year.

Q: What homestead tax credit is available and how do I apply? A: The homestead credit provides up to $1,000 reduction in assessed value for qualifying owner-occupied residences. Applications must be filed with the Grady County Assessor by March 15th. The credit is NOT automatic and requires annual verification of occupancy.

Q: How does the senior citizen homestead credit work? A: Property owners age 65 and older may qualify for an additional homestead credit that can significantly reduce assessed value. This credit caps assessment increases and requires application with the County Assessor, including proof of age and occupancy.

Q: Can I appeal my property assessment? A: Yes, property owners may appeal assessments to the Grady County Board of Equalization. Appeals must typically be filed by April 1st following the assessment notice. Contact the County Assessor's office for specific procedures and deadlines.

Q: What happens if I pay property taxes late? A: Late payments incur penalties and interest charges. After the January 31st deadline, additional collection costs may apply, and properties may eventually be subject to tax sale proceedings.

Q: Are there tax credits for disabled veterans? A: Oklahoma provides property tax credits for qualifying disabled veterans. These require application and documentation of disability rating. Contact the County Assessor for specific eligibility requirements and application procedures.

Q: How often are properties reassessed? A: Grady County conducts regular reassessments to maintain current market values. The County Assessor performs visual inspections and market analysis to ensure assessments reflect fair market value as of January 1st each year.

Q: Can I pay my property taxes online? A: Contact the Grady County Treasurer's office for current online payment options and accepted payment methods. Many counties now offer online payment systems for taxpayer convenience.

Q: How do special district taxes affect my bill? A: Your total property tax includes levies from all applicable taxing entities serving your property location, including school districts, fire districts, and municipal services. Rates vary significantly depending on which districts serve your specific address.

Q: Do I need to reapply for tax credits annually? A: Most tax credits require initial application only, but the County Assessor may require periodic verification of continued eligibility, particularly for occupancy-based credits like homestead exemptions.

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