HonestCasa logoHonestCasa
Updated 2025 Tax Year

Jo Daviess County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
0.70916% effective rate for 2024, varies significantly by location and taxing districts within county
1st Due
Jun 1
2nd Due
Sep 1
Exemptions
5+ Available
Section 1

How Property Tax Works

Jo Daviess County operates under Illinois property tax law, collecting taxes to fund essential local services including schools, county government, townships, municipalities, and special districts. Property taxes are the primary revenue source for these local government services, with the county serving as the collection agent for approximately 110 different taxing bodies within its boundaries.

The effective property tax rate in Jo Daviess County for tax year 2024 is approximately 0.70916%, though actual rates vary significantly by location within the county depending on which combination of taxing districts serve your property. These districts can include school districts, municipalities, fire protection districts, library districts, and other special service areas. Property taxes are assessed annually based on the previous year's assessed values and are payable in two installments. Jo Daviess County is subject to the Illinois Property Tax Extension Limitation Law (PTELL), which limits the annual growth of property tax extensions for most taxing districts.

Section 2

What Makes Up Your Tax Bill

ComponentRateDescription
County OperationsVariesBasic county services, roads, administration
School DistrictsVariesK-12 education funding (largest component)
Municipal ServicesVariesCity/village services where applicable
Township ServicesVariesTownship road maintenance, general assistance
Fire ProtectionVariesFire department services and equipment
Library DistrictsVariesPublic library operations
Other Special DistrictsVariesPark districts, drainage districts, etc.
Total Composite Rate0.70916%Tax Year 2024 county average

Note: These rates apply to Levy Year 2024 and vary significantly by property location within Jo Daviess County. Your actual tax rate depends on which specific combination of taxing districts serve your property. Contact the County Clerk's office for your specific district combination.

Section 3

When Are Property Taxes Due?

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

First Installment
Jun 1
Delinquent after Dec 10
Second Installment
Sep 1
Delinquent after Apr 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 Jo Daviess County are triggered by changes in property ownership, new construction, or property improvements that occur after the January 1 assessment date but before the end of the tax year. When these events occur, the County Assessor determines the difference between the original assessed value and the new assessed value, then applies the current tax rate to calculate additional taxes owed.

For example, if you complete a home addition worth $50,000 in July, and your total tax rate is 0.71%, you would owe approximately $355 in supplemental taxes ($50,000 × 33.33% assessment ratio × 0.71% = $118.33 prorated for the remaining portion of the tax year). Supplemental tax bills are issued separately from regular tax bills and have their own payment deadlines, typically 30 days from the bill date.

Example Calculation

Example 1: $300,000 Home

  • Assessed Value: $100,000 (33.33% of market value)
  • Less: General Homestead Exemption: $10,000 (requires application)
  • Net Taxable Value: $90,000
  • Annual Tax: $638.25 ($90,000 × 0.70916%)
  • Monthly Escrow: $53.19

Example 2: $600,000 Home

  • Assessed Value: $200,000 (33.33% of market value)
  • Less: General Homestead Exemption: $10,000 (requires application)
  • Net Taxable Value: $190,000
  • Annual Tax: $1,347.40 ($190,000 × 0.70916%)
  • Monthly Escrow: $112.28

Example 3: $1,000,000 Home

  • Assessed Value: $333,300 (33.33% of market value)
  • Less: General Homestead Exemption: $10,000 (requires application)
  • Net Taxable Value: $323,300
  • Annual Tax: $2,293.05 ($323,300 × 0.70916%)
  • Monthly Escrow: $191.09

Note: All exemptions require annual application and are not automatically applied. Rates shown are estimates based on county average.

See How Taxes Affect Your Payment

Property taxes are just part of your total monthly cost. Get the full picture.

Calculate Now
Section 5

Escrow & Property Taxes

Most mortgage lenders in Jo Daviess County require borrowers to maintain an escrow account for property taxes, collecting monthly payments and making tax payments on the borrower's behalf. Lenders typically collect 1/12 of the annual tax amount each month, plus a cushion to ensure sufficient funds are available when payments are due.

Property taxes in Jo Daviess County are payable in two installments, with due dates that vary annually. For 2025, the first installment is due June 2, 2025, and the second installment is due September 2, 2025. Lenders receive tax bills directly and make payments from your escrow account before the due dates. You should receive an annual escrow analysis from your lender showing the account activity and any adjustments to your monthly payment. If your taxes increase due to reassessment or rate changes, your monthly escrow payment may be adjusted accordingly.

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 Jo Daviess County? A: For 2025, property taxes are due June 2, 2025 (first installment) and September 2, 2025 (second installment). Due dates may vary slightly each year.

Q: What tax credits are available and do I need to apply? A: The primary credit available is the General Homestead Exemption, which reduces your equalized assessed value by up to $10,000. This credit requires annual application and is not automatic. Senior citizens may qualify for additional assessment freeze exemptions with separate applications required.

Q: How does the Homestead Exemption work? A: The General Homestead Exemption reduces your property's equalized assessed value by up to $10,000, which can save approximately $71 annually on a typical property (at 0.71% tax rate). You must be a full-time resident and apply annually. The exemption does not reduce market value but rather the taxable assessed value.

Q: How often are properties reassessed? A: Jo Daviess County conducts property assessments annually, with the assessment date being January 1 of each year. Properties may be physically inspected on a rotating cycle, but values are reviewed annually based on market conditions and sales data.

Q: What are the penalties for late payment? A: Illinois law provides for penalties and interest on delinquent property taxes. Interest accrues monthly on unpaid taxes, and properties can ultimately be subject to tax sale if taxes remain unpaid for an extended period.

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

Q: How do I appeal my property assessment? A: Property assessment appeals must be filed with the Jo Daviess County Board of Review during the designated appeal period, typically in summer months. Contact the County Assessor's office for specific deadlines and required forms.

Q: Why do tax rates vary within the county? A: Jo Daviess County contains approximately 110 different taxing districts (school districts, municipalities, fire districts, etc.). Your specific tax rate depends on which combination of these districts serves your property location, which is why rates vary significantly across the county.

See the Full Picture of Your Home Costs

Property taxes are just one piece of homeownership. HonestCasa helps you understand your total monthly cost and explore safe ways to access your home equity.

Total Monthly Cost

Mortgage + taxes + insurance + HOA

Equity Growth

Track how your equity grows over time

Safe Equity Access

Options for projects or debt payoff

Free • No credit check • 2-minute estimate