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Updated 2025 Tax Year

Fulton County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
4.66% effective rate (varies by taxing district combination within county)
1st Due
Jun 1
2nd Due
Sep 1
Exemptions
4+ Available
Section 1

How Property Tax Works

Fulton County, Illinois operates under a property tax system that funds essential local services including schools, county government, townships, and various special districts. The county follows Illinois state law with a combined effective tax rate of approximately 4.66% for the 2025 levy year, though this represents an average across all taxing districts within the county. Property taxes are the primary funding mechanism for local government services, school districts, fire protection districts, and other special purpose entities.

The actual tax rate you pay depends on your specific location within Fulton County, as different combinations of school districts, municipalities, townships, and special taxing districts create varying total rates. Properties are assessed at 33.33% of fair market value for residential properties, with taxes payable in two installments on June 1st and September 1st annually. The county operates under Illinois' Property Tax Extension Limitation Law (PTELL), which provides some limitations on tax levy increases.

Section 2

What Makes Up Your Tax Bill

ComponentRate RangeDescription
County General~0.50-0.80%County operations, sheriff, courts, health services
School Districts~2.50-3.20%Elementary and high school districts (varies significantly by district)
Township~0.15-0.30%Township road maintenance, general assistance
Transportation System~0.41%Regional transportation infrastructure
Working Cash~0.05%School district operating cash reserves
Fire Prevention/Safety~0.05%Fire protection and emergency services
Special Education~0.04%Special education programs
Municipal (if applicable)~0.20-0.60%City/village services (only in incorporated areas)

Total Effective Rate: ~4.66% (2025 Levy Year)

Note: Actual rates vary by location within Fulton County based on which combination of taxing districts serve your property address.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Fulton 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 Fulton County are triggered by ownership changes, new construction, or property improvements that increase assessed value during the tax year. When these events occur, the county assessor recalculates the property's assessed value, and additional taxes are levied on the increased assessment from the date of change through the end of the fiscal year.

For example, if you purchase a home in March that was previously under-assessed, or complete a major renovation that adds $50,000 in assessed value, you would receive a supplemental tax bill for the increased assessment covering March through the following February. The supplemental tax is calculated by applying the current year's tax rate to the difference between the new and old assessed values, prorated for the remaining months in the tax year.

Example Calculation

Home Value: $300,000

  • Market Value: $300,000
  • Assessed Value (33.33%): $100,000
  • Less Homestead Exemption: -$10,000
  • Net Taxable Value: $90,000
  • Annual Tax (4.66%): $4,194
  • Monthly Escrow: $349

Home Value: $600,000

  • Market Value: $600,000
  • Assessed Value (33.33%): $200,000
  • Less Homestead Exemption: -$10,000
  • Net Taxable Value: $190,000
  • Annual Tax (4.66%): $8,854
  • Monthly Escrow: $738

Home Value: $1,000,000

  • Market Value: $1,000,000
  • Assessed Value (33.33%): $333,300
  • Less Homestead Exemption: -$10,000
  • Net Taxable Value: $323,300
  • Annual Tax (4.66%): $15,066
  • Monthly Escrow: $1,256

Note: Homestead Exemption requires annual application and reduces equalized assessed value by up to $10,000. Additional exemptions may be available for seniors, veterans, or disabled persons but require separate applications.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Fulton County require property tax escrow accounts for borrowers with less than 20% down payment. Your lender collects monthly property tax payments as part of your mortgage payment and holds these funds in escrow until tax payments are due. Lenders typically pay your property taxes directly to the county treasurer on the June 1st and September 1st due dates.

Annual escrow analysis occurs each year where your lender reviews the previous year's actual tax bills against collected escrow funds. If property taxes increased, you may face an escrow shortage requiring either a lump-sum payment or increased monthly payments. Conversely, if taxes decreased, you may receive a refund. You can verify your property tax information independently through the Fulton County Treasurer's office to ensure your lender's calculations are accurate.

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 Fulton County? A: Property taxes are due in two equal installments: June 1st and September 1st annually for the current tax year. Prepayments are accepted from December 1-31 of the prior year.

Q: What homestead exemptions are available and how do I apply? A: The General Homestead Exemption reduces your property's equalized assessed value by up to $10,000 for owner-occupied homes. This is NOT automatic - you must file an application by March 1st annually. Senior citizens may qualify for additional exemptions with income limitations.

Q: How does the homestead exemption work exactly? A: The homestead exemption creates a "floating" exemption that limits annual assessment increases rather than simply reducing market value. It's designed to protect long-term homeowners from dramatic assessment increases while maintaining the $10,000 reduction in taxable assessed value.

Q: What happens if I pay my property taxes late? A: Late penalties apply after each due date. Interest and penalties accrue monthly on unpaid balances, and the county can eventually initiate tax sale proceedings for severely delinquent accounts.

Q: How often are properties reassessed in Fulton County? A: Illinois law requires property reassessments at least every four years, though counties may reassess more frequently. You can appeal your assessment through the county assessment office if you believe it's inaccurate.

Q: Can I pay property taxes online? A: Contact the Fulton County Treasurer's office directly for current online payment options, as availability varies by county in Illinois.

Q: Are there property tax credits available for veterans or seniors? A: Yes, veterans may qualify for exemptions on assessed value, and seniors (65+) may qualify for additional exemptions based on income limits. All require separate applications with specific deadlines - contact the county assessor's office for details.

Q: Why do property tax rates vary within Fulton County? A: Your total tax rate depends on which school districts, fire districts, townships, and municipalities serve your specific address. Different combinations of these taxing bodies create varying total rates across the county.

Q: How can I appeal my property assessment? A: File an appeal with the Fulton County Board of Review during their annual appeal period, typically in summer months. You'll need evidence supporting your claim that the assessed value exceeds fair market value.

Q: What records should I keep for property tax purposes? A: Maintain copies of tax bills, exemption applications, appeal documents, and any correspondence with the assessor's office. Keep improvement receipts as they may affect future assessments.

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