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Updated 2025 Tax Year

Gallatin County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
Varies by district from 2.27% statewide average base, actual rates higher due to overlapping special districts
1st Due
Jun 1
2nd Due
Sep 1
Exemptions
5+ Available
Section 1

How Property Tax Works

Gallatin County, Illinois operates under a property tax system that funds essential local services including schools, townships, municipalities, and county operations. Property taxes are the primary revenue source for these local governments, with the county serving as the collection agent for all taxing districts within its boundaries. The Illinois Property Tax Extension Limitation Law (PTELL) governs how tax levies are calculated and limits annual increases in most cases.

Property tax rates in Gallatin County vary significantly by location due to the overlay of different special taxing districts, including school districts, fire protection districts, library districts, and municipal boundaries. While the statewide average effective rate is approximately 2.27%, actual rates within Gallatin County can range from 3% to over 8% depending on your specific location and the combination of taxing districts that serve your property. Property owners should verify their specific tax rate by reviewing their tax bill or contacting the Gallatin County Clerk's office, as rates are set annually based on each district's approved levy.

Section 2

What Makes Up Your Tax Bill

ComponentEstimated Rate RangeDescription
County General0.3% - 0.5%County operations, courthouse, sheriff, health services
School Districts4.0% - 6.5%Elementary and high school districts (varies by district)
Township0.1% - 0.3%Township road maintenance and general services
Municipal0.5% - 1.5%City/village services (if applicable to property location)
Fire Protection0.2% - 0.6%Fire department services (rural areas)
Library District0.1% - 0.4%Public library services (where applicable)
Total Composite Rate3.0% - 8.0%Varies by specific property location

Note: These rates apply to the 2024 tax year (payable in 2025). Actual rates vary significantly based on which combination of taxing districts serve your specific property address. School district rates typically represent the largest component of your total tax bill. Contact the Gallatin County Clerk for your exact composite rate.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Gallatin 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 Illinois are triggered when property undergoes significant changes that affect its assessed value during the tax year. The most common triggers include new construction completion, major improvements or additions, and changes in property ownership that prompt reassessment. When these events occur, the County Assessor calculates the difference between the original assessed value and the new assessed value, then applies the current tax rate to determine any additional tax owed.

For example, if you complete a $50,000 home addition in March and your property is reassessed, the additional assessed value (typically $50,000 ÷ 3 = $16,667 at Illinois's one-third assessment ratio) would be subject to your local composite tax rate for the remaining months of the tax year. If your total tax rate is 6%, you would owe an additional $1,000 annually, prorated for the months remaining in the tax year from the completion date.

Example Calculation

Example 1: $300,000 Home Value

  • Market Value: $300,000
  • Assessed Value (33.33%): $100,000
  • Less: Homeowner Exemption: -$10,000
  • Net Taxable Value: $90,000
  • Tax Rate (example district): 5.5%
  • Annual Tax: $4,950
  • Monthly Escrow: $412

Example 2: $600,000 Home Value

  • Market Value: $600,000
  • Assessed Value (33.33%): $200,000
  • Less: Homeowner Exemption: -$10,000
  • Net Taxable Value: $190,000
  • Tax Rate (example district): 6.0%
  • Annual Tax: $11,400
  • Monthly Escrow: $950

Example 3: $1,000,000 Home Value

  • Market Value: $1,000,000
  • Assessed Value (33.33%): $333,300
  • Less: Homeowner Exemption: -$10,000
  • Net Taxable Value: $323,300
  • Tax Rate (example district): 6.5%
  • Annual Tax: $21,015
  • Monthly Escrow: $1,751

Note: Homeowner exemption requires annual application and applies only to primary residences. Tax rates shown are examples - actual rates vary by specific property location within taxing districts.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Gallatin County require property tax escrow accounts for borrowers with less than 20% down payment, though some lenders may require escrow regardless of down payment amount. Your lender collects monthly property tax payments as part of your mortgage payment and deposits them into an escrow account. The lender then pays your property taxes directly to Gallatin County when they become due on June 15th and September 15th each year.

Lenders are required to conduct annual escrow analyses to ensure adequate funds are collected. If property taxes increase significantly, you may face an escrow shortage requiring either a lump sum payment or increased monthly payments. Conversely, if taxes decrease, you may receive a refund. Property owners can request to remove escrow requirements once they reach 20% equity and meet lender criteria, but must then make direct payments to the county. Always verify with the County Treasurer that payments have been properly applied to your account, as lenders occasionally make errors in property identification numbers or payment amounts.

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 Gallatin County for the current fiscal year? A: Property taxes for 2024 (payable in 2025) are due June 15, 2025 for the first installment and September 15, 2025 for the second installment. Payments are considered late after these dates and subject to penalties.

Q: What tax credits are available and do they require application? A: The primary tax benefit is the Homeowner Exemption (technically an exemption, not a credit), which reduces your equalized assessed value by up to $10,000. This requires annual application and applies only to your primary residence. Senior citizens and disabled veterans may qualify for additional exemptions that also require separate applications.

Q: How does the Homestead Exemption work? A: Illinois's Homeowner Exemption reduces your property's equalized assessed value by up to $10,000, which typically saves $300-800 annually depending on your local tax rate. You must file annually with the Chief County Assessment Officer, and the property must be your primary residence as of January 1st of the tax year.

Q: How often are properties reassessed in Gallatin County? A: Gallatin County conducts general reassessments every four years as required by state law. However, individual properties may be reassessed annually if they undergo significant changes like new construction, major improvements, or ownership transfers that trigger a review.

Q: What happens if I pay my property taxes late? A: Late payments incur penalties and interest charges. First installment payments made after June 15th and second installment payments after September 15th are subject to penalties that increase monthly. After one year of delinquency, properties may be subject to tax sale proceedings.

Q: Can I pay property taxes online? A: Contact the Gallatin County Treasurer's office to confirm current online payment options, as availability may vary. Many Illinois counties offer online payment systems, but specific capabilities and accepted payment methods should be verified directly with the county.

Q: How do special district taxes affect my bill? A: Your total property tax bill represents the combined levies of all taxing districts serving your property, including school districts, fire protection districts, library districts, and others. Moving even a short distance can significantly change your tax rate if you cross district boundaries.

Q: How do I appeal my property assessment? A: Assessment appeals must be filed with the Gallatin County Board of Review during their scheduled hearing period, typically in summer months following the assessment notice. You'll need evidence of your property's market value such as recent appraisals, comparable sales, or documentation of property condition issues.

Q: What documentation do I need to apply for the Homeowner Exemption? A: Applications typically require proof of residence such as a driver's license, voter registration, or utility bills showing the property as your primary residence as of January 1st. Contact the Chief County Assessment Officer for specific application requirements and deadlines.

Q: Can I make partial payments on my property taxes? A: Illinois law generally requires payment of each installment in full by the due date. Contact the Gallatin County Treasurer's office to discuss any payment difficulties, as limited payment plan options may be available in specific circumstances.

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