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Updated 2025 Tax Year

DeKalb County
Property Tax Guide

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

9 Official Sources
8 min read
Quick Facts
Tax Rate
32.5 mills (3.25%) - varies by location within county due to municipal and special district rates
Exemptions
5+ Available
Section 1

How Property Tax Works

DeKalb County, Alabama operates under a property tax system that funds essential local services including schools, roads, public safety, and county operations. The county uses a millage-based system where property taxes are calculated using mill rates applied to assessed property values. For the 2025 tax year, the total millage rate for DeKalb County is 32.5 mills, which includes both state and local components.

Property tax rates in DeKalb County vary significantly depending on your specific location within the county due to different municipal boundaries and special taxing districts. Some areas may have additional millage for city services, school bonds, or other special assessments. Property is assessed at fair market value with various tax credits available to qualifying property owners, though these credits require separate applications and are not automatically applied to your tax bill.

Section 2

What Makes Up Your Tax Bill

ComponentRate (Mills)Description
State Base Rate6.5Alabama state property tax
County Rate26.0DeKalb County services and operations
Total Base Rate32.5Standard rate for unincorporated areas
City RatesVariesAdditional millage for municipal services
School BondsVariesSpecial assessments for school construction
Special DistrictsVariesFire districts, library districts, etc.

Rates shown are for Levy Year 2025. Your actual total rate depends on your specific location within DeKalb County and applicable special taxing districts. Contact the DeKalb County Revenue Commissioner for your exact millage rate.

Section 3

When Are Property Taxes Due?

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

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 DeKalb County are additional property tax bills issued when there are changes to property ownership, new construction, or improvements that increase assessed value during the tax year. These supplemental bills are prorated based on the number of months remaining in the tax year after the change occurs.

Common triggers for supplemental taxes include: purchase of property that triggers a reassessment, completion of new construction or major renovations, removal of tax credits due to change in use or eligibility, and correction of assessment errors. For example, if you complete a $50,000 home addition in June, you would receive a supplemental tax bill for the increased assessment covering July through December of that tax year.

Example Calculation

Example 1: $300,000 Home (with $10,000 Homestead Exemption)

  • Market Value: $300,000
  • Less Homestead Exemption: $10,000
  • Net Taxable Value: $290,000
  • Annual Tax ($290,000 × 32.5 mills): $9,425
  • Monthly Escrow: $785

Example 2: $600,000 Home (with $10,000 Homestead Exemption)

  • Market Value: $600,000
  • Less Homestead Exemption: $10,000
  • Net Taxable Value: $590,000
  • Annual Tax ($590,000 × 32.5 mills): $19,175
  • Monthly Escrow: $1,598

Example 3: $1,000,000 Home (with $10,000 Homestead Exemption)

  • Market Value: $1,000,000
  • Less Homestead Exemption: $10,000
  • Net Taxable Value: $990,000
  • Annual Tax ($990,000 × 32.5 mills): $32,175
  • Monthly Escrow: $2,681

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

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Section 5

Escrow & Property Taxes

Most mortgage lenders in DeKalb County require borrowers to maintain an escrow account for property taxes and insurance. Your lender collects monthly payments equal to 1/12th of your annual property tax bill plus insurance premiums. Since DeKalb County property taxes are due October 1st and become delinquent after December 31st, most lenders pay the taxes in early October to avoid late penalties.

Your lender will receive a copy of your annual tax bill and should notify you of any significant changes that affect your escrow payment. If your property taxes increase due to reassessment or mill rate changes, your lender may require you to make up any escrow shortage over the following 12 months. You have the right to request an escrow analysis from your lender and should verify that property tax exemptions or credits are properly reflected in your tax bill.

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 DeKalb County property taxes due for 2025? A: Property taxes are due October 1, 2025, and become delinquent after December 31, 2025. Payment in full by December 31st avoids penalty and interest charges.

Q: What homestead exemption is available and do I need to apply? A: DeKalb County offers a $10,000 homestead exemption for owner-occupied primary residences. You must apply for this exemption - it is not automatic. Contact the DeKalb County Revenue Commissioner's office for application forms and deadlines.

Q: Are there other tax credits available for seniors or veterans? A: Yes, additional exemptions may be available for qualifying seniors, disabled veterans, and other groups. Each requires a separate application with documentation. Contact the county assessor for specific eligibility requirements and application procedures.

Q: How often are properties reassessed in DeKalb County? A: Alabama law requires properties to be appraised every four years, though the county may conduct more frequent assessments. You will receive notice of any assessment changes with appeal rights and deadlines.

Q: What happens if I pay my property taxes late? A: Properties become delinquent after December 31st and are subject to penalty and interest charges. Continued delinquency can eventually result in tax sale proceedings.

Q: Can I pay my property taxes online? A: Contact the DeKalb County Revenue Commissioner's office for current online payment options and accepted payment methods.

Q: Why is my tax rate different from my neighbor's? A: Tax rates vary within DeKalb County based on municipal boundaries and special taxing districts. Properties in incorporated cities, school bond areas, or special districts may have different total millage rates.

Q: How do I appeal my property assessment? A: Assessment appeals must be filed with the DeKalb County Board of Equalization within specific deadlines after receiving your assessment notice. Contact the board for appeal forms and procedures.

Q: Do I need to reapply for exemptions every year? A: Most exemptions remain in effect as long as you continue to qualify, but some may require periodic renewal or verification. Check with the Revenue Commissioner's office about renewal requirements for your specific exemptions.

Q: What documentation do I need for the homestead exemption? A: Typically you'll need proof of ownership, evidence the property is your primary residence (such as driver's license or voter registration), and a completed application form. Contact the county for specific documentation requirements.

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