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Updated 2025 Tax Year

Sangamon County
Property Tax Guide

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

10 Official Sources
8 min read
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Quick Facts
Tax Rate
7% to over 8% depending on location and overlapping taxing districts (school, fire, municipal boundaries)
1st Due
Jun 1
2nd Due
Sep 1
Exemptions
5+ Available
Section 1

How Property Tax Works

Sangamon County, Illinois operates under the state's property tax system to fund essential local services including schools, municipalities, townships, and county operations. Property taxes are the primary revenue source for these governmental entities, with Springfield being the county seat and largest municipality. The effective tax rate in Sangamon County varies significantly by location within the county due to overlapping special taxing districts such as school districts, fire protection districts, and municipal boundaries.

For the 2025-2026 levy year, property tax rates in Sangamon County range from approximately 7% to over 8% depending on your specific location and the combination of taxing districts that serve your property. The county follows Illinois' Property Tax Extension Limitation Law (PTELL), which limits how much taxing bodies can increase their property tax extensions annually. Property owners should note that actual tax bills depend on both the assessed value of their property and the specific combination of local taxing districts where their property is located.

Section 2

What Makes Up Your Tax Bill

ComponentRate RangeDescription
Total Effective Rate (FY 2025-2026)7.0626% - 8.3995%Combined rate varies by taxing districts
County General~0.5% - 0.8%Sangamon County operations and services
School Districts~4.0% - 5.5%Local elementary and high school districts
Municipal/Township~0.5% - 1.5%City, village, or township services
Community College~0.3% - 0.5%Lincoln Land Community College District
Special Districts~0.5% - 1.0%Fire protection, library, park districts

Note: These rates are for levy year 2025-2026 and represent typical ranges. Your exact rate depends on which specific taxing districts serve your property location. Properties within Springfield city limits will have different rates than unincorporated areas or other municipalities.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Sangamon 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 Sangamon County are triggered by changes in property ownership, new construction, or substantial improvements that occur after the January 1st assessment date. When property changes hands or improvements are completed mid-year, the county assessor issues a supplemental assessment to capture the change in value for the remaining portion of the tax year.

For example, if you purchase a newly constructed home in March that wasn't on the January 1st assessment roll, you would receive a supplemental tax bill covering the period from March through the end of the tax year. The supplemental tax is calculated by determining the difference between the old assessed value and the new assessed value, then applying the current tax rate to that difference, prorated for the months remaining in the tax year. Supplemental bills are typically issued within 60-90 days of the triggering event and have separate due dates from regular property tax bills.

Example Calculation

Example 1: $300,000 Home

  • Market Value: $300,000
  • Assessed Value (33.33%): $100,000
  • Less General Homestead Credit: -$6,000 (if applied for)
  • Net Taxable Value: $94,000
  • Annual Tax (7.0626% rate): $6,639
  • Monthly Escrow: $553

Example 2: $600,000 Home

  • Market Value: $600,000
  • Assessed Value (33.33%): $200,000
  • Less General Homestead Credit: -$6,000 (if applied for)
  • Net Taxable Value: $194,000
  • Annual Tax (8.3995% rate): $16,295
  • Monthly Escrow: $1,358

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Assessed Value (33.33%): $333,333
  • Less General Homestead Credit: -$6,000 (if applied for)
  • Net Taxable Value: $327,333
  • Annual Tax (8.3995% rate): $27,496
  • Monthly Escrow: $2,291

Note: Credits shown require annual application. Actual rates vary by specific taxing districts serving your property.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Sangamon County require borrowers to maintain an escrow account for property tax payments, especially for loans with less than 20% down payment. Your lender collects 1/12th of your estimated annual property tax bill with each monthly mortgage payment and pays the county directly when taxes are due. Lenders typically collect an initial escrow deposit of 2-3 months of taxes at closing to ensure adequate funds are available.

The county sends tax bills directly to your mortgage company when you have an escrow account. Your lender will provide an annual escrow analysis showing how your payments were applied and any adjustments needed for the coming year. If your property taxes increase due to reassessment or rate changes, your monthly escrow payment will be adjusted accordingly. You can verify that payments were received by checking the Sangamon County Treasurer's website or contacting their office directly, as lenders occasionally miss payment deadlines.

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 Sangamon County for FY 2025-2026? A: Property tax bills are typically due in two installments: first installment due June 6th and second installment due September 5th, with final payment deadline of November 5th.

Q: What tax credits are available and do I need to apply? A: The General Homestead Credit reduces taxable value by up to $6,000 for owner-occupied homes. Additional credits are available for seniors, disabled persons, and veterans. All credits require annual application through the Sangamon County Supervisor of Assessments office.

Q: How does the Homestead Credit work? A: The Homestead Credit caps the annual increase in your home's assessed value for tax purposes, not the market value. You must file an application to receive this benefit - it is not automatic. The credit helps limit dramatic tax increases due to rising property values.

Q: How often are properties reassessed in Sangamon County? A: Properties are reassessed every four years on a rotating basis by township. You can appeal your assessment to the Board of Review if you believe it's incorrect, with specific deadlines following assessment notices.

Q: What happens if I pay my taxes late? A: Late payments incur interest charges of 1.5% per month. After taxes become delinquent, additional penalties apply and the property may eventually be subject to tax sale proceedings.

Q: Can I pay my property taxes online? A: Yes, Sangamon County offers online payment options through the County Treasurer's website. You can pay by electronic check or credit card, though credit card payments may include processing fees.

Q: Why did my tax rate increase when my assessment stayed the same? A: Tax rates can increase when local taxing districts (schools, municipalities, etc.) increase their levies or when overall property values in the area decrease while maintaining the same service levels.

Q: Do I pay different rates if I live in Springfield versus unincorporated Sangamon County? A: Yes, your tax rate depends on which combination of taxing districts serve your property. Springfield residents pay city taxes while unincorporated area residents pay township taxes, and different areas are served by different school and special districts.

Verified Sources

Backed by 10 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
Current Billing Details 2024 Payable 2025tax.co.sangamon.il.us
02
Current Assessment 2025 Payable 2026tax.co.sangamon.il.us
03
Parcel Summary 2025 Payable 2026tax.co.sangamon.il.us
04
Tax Doc
Property Tax Bills are due on Friday September 6thsangamonil.gov
05
State
Current Year Real Estate Informationsangamonil.gov
06
State
Real Estate Tax Payments Optionssangamonil.gov
07
County
Sangamon County Treasurer Programs | Springfield, Illinoissangamonil.gov
08
Supervisor of Assessments Exemptionssangamonil.gov
09
County
SangamonCounty Board of Reviewtax.co.sangamon.il.us
10
State
Office of the Illinois State Treasurerillinoistreasurer.gov
All sources verified as of 2025 Tax Year

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