Last updated 2026-07-09
TL;DR
Sangamon County, Illinois taxes property at one-third of estimated market value. The 2024 tax bills come due in two installments: June 2 and September 2, 2025. Disagree with your assessed value? You can appeal to the Sangamon County Board of Review each fall, no lawyer required. The General Homestead Exemption alone cuts up to $6,000 off your equalized value without any appeal.
How does Sangamon County assess property values?
The Sangamon County Supervisor of Assessments sets the assessed value of every parcel at 33.33% of its estimated fair market value, as required by 35 ILCS 200/9-145. [1] So a home worth $240,000 on the open market should carry an assessed value near $80,000. That's the math. Get the market value wrong and everything downstream is wrong too.
From there, the Illinois Department of Revenue publishes an equalization factor, sometimes called the "multiplier," that nudges county assessments toward a uniform statewide level. Sangamon County's multiplier has run close to 1.0000 in recent years, which means the assessed value and the equalized assessed value (EAV) are often nearly the same number. [2] That can shift year to year. Check the current factor printed on your bill.
Residential properties are reassessed on a four-year cycle here. Each township rotates through in its own year, so your home might sit untouched while your neighbor two blocks over gets a new number. The county mails a reassessment notice when it reviews your property. No notice means your prior assessment carries forward unchanged.
Here's the part that matters. A high fair-market-value estimate by the assessor is the single biggest driver of an oversized bill. That's the number to fight if your tax feels wrong.
What are the current Sangamon County property tax rates?
Illinois property tax rates are stated as a dollar amount per $100 of EAV, or as a straight percentage of EAV. They swing hard by taxing district, because school districts, municipalities, park districts, fire protection districts, and the county each levy separately on the same parcel. Your total rate is the pile of all of them stacked together.
For Springfield properties in Springfield School District 186, the combined rate has run roughly 8% to 10% of EAV in recent years. [3] A home with an $80,000 EAV could owe $6,400 to $8,000 before exemptions. Rural parcels in townships with lighter school levies pay noticeably less.
The table below shows representative 2023 tax year rates for selected districts. These are approximate totals. Your actual rate is the sum of every individual levy that touches your parcel.
| Area / District | Approximate combined rate (% of EAV) |
|---|---|
| Springfield (SD 186) | ~9.5% |
| Rochester (Rochester CUSD 3A) | ~7.8% |
| Chatham (Ball-Chatham CUSD 5) | ~7.2% |
| Riverton (Riverton CUSD 14) | ~7.6% |
| Unincorporated rural (lower levy areas) | ~6.0 to 7.0% |
Sources: Sangamon County Treasurer and individual district levy reports. [3] Treat these as ballpark. Pull your specific rate from your tax bill or the county's online parcel search.
For how these rates stack up against major metro counties elsewhere, see our explainer on property tax taxation.
When are Sangamon County property taxes due in 2025?
Illinois law requires two installment due dates for most counties. [4] For tax year 2024 (billed in 2025), the Sangamon County Treasurer set installment due dates of June 2, 2025 and September 2, 2025. [3] Miss either date and a 1.5% per month penalty hits immediately under 35 ILCS 200/21-15. [4] That works out to 18% a year, so don't be casual about it.
Bills go out roughly 30 days before the first installment. If you escrow, your mortgage servicer usually pays from your collected reserves. Confirm they got the bill. A lost bill is your legal problem, not the servicer's.
You can pay online through the Sangamon County Treasurer's website, in person at the county building at 200 S. Ninth St. in Springfield, or by mail. The county takes partial payments, but interest keeps running on any unpaid balance past the due date. For payment methods that work across many counties, see online tax payment for property.
One thing people miss: paying on time does not forfeit your right to appeal. Pay the bill, contest the assessed value, and collect a refund later if you win.
What exemptions reduce Sangamon County property taxes?
Illinois offers several statutory exemptions that subtract directly from your EAV before the tax rate is applied. Claiming every one you qualify for is the easiest money you'll ever save on taxes, and most take a single application.
General Homestead Exemption (GHE): Cuts EAV by up to $6,000 for owner-occupied residential property. [5] You have to live in the home as your primary residence. Most widely claimed exemption in the state.
Senior Citizens Homestead Exemption: An extra $5,000 EAV reduction for homeowners 65 or older. [5] Stack it with the GHE and a qualifying senior knocks $11,000 off EAV.
Senior Citizens Assessment Freeze: Freezes a senior household's EAV at its base-year level when household income is at or below $65,000 (as of the most recent adjustment). [5] This is one of the most valuable exemptions going, because rising market values can't push the tax base up while the freeze holds.
Persons with Disabilities Exemption: $2,000 EAV reduction for qualifying disabled homeowners. [5]
Veterans and Returning Veterans Exemptions: Illinois gives a $5,000 EAV reduction for returning veterans in the year they come home from active duty, plus a 15% or 25% reduction for disabled veterans depending on disability rating, rising to full exemption at a 70%+ service-connected rating. [5]
Homestead Improvement Exemption: New improvements (an addition, a renovation) can be exempt from assessment for up to four years and up to $75,000 in added value. [5] Build a deck, don't get taxed on it right away.
Applications go to the Sangamon County Supervisor of Assessments, room 210 at 200 S. Ninth St., or through the office portal. The deadline for most exemptions tracks the Board of Review complaint deadline, generally late fall.
How do you appeal your Sangamon County property tax assessment?
There are two levels of appeal before a courtroom ever enters the picture: the Sangamon County Board of Review (BOR) and, after that, the Illinois Property Tax Appeal Board (PTAB). Most homeowners win or lose at the first level, so treat the BOR seriously.
Step 1: Read your assessment notice. When a reassessment notice arrives, you get 30 days from the newspaper publication date to file a complaint with the Board of Review. The BOR publishes its complaint period every year, usually September or October, in the State Journal-Register and on the county website. [6] Miss the window and you wait another four years for your township's next cycle.
Step 2: Gather evidence. The BOR wants one thing: proof that your property's market value on January 1 of the tax year is lower than what the assessor claims. The two strongest kinds of evidence are comparable sales ("comps") and, for homes with structural problems, a licensed appraisal. Comps should be arm's-length sales of similar homes within roughly a half mile, sold in the prior 12 months. Pull them from the Illinois Property Tax System (IPTAP), the county parcel search, or a free MLS site.
Step 3: File a Board of Review complaint. Get the BOR complaint form from the Sangamon County Board of Review at room 212 of the county building. File by the published deadline, attach your evidence, request a hearing. There is no filing fee for residential appeals. [6]
Step 4: Show up to your hearing. BOR hearings are short, often 10 to 20 minutes. A board member looks at your evidence against the assessor's record. Bring printed comps, a one-page summary of your argument, and photos of any condition problems.
Step 5: If the BOR rules against you. You have 30 days from the BOR's final decision to file with PTAB, or you can go straight to the Circuit Court of Sangamon County with a tax objection complaint. PTAB handles most escalated residential appeals because court is expensive. [7]
Want to run this yourself instead of handing a contingency firm 25 to 40% of your savings? The TaxFightBack DIY appeal kit walks each step with county-specific forms and comp analysis templates.
For how other counties run similar two-step processes, the hennepin county property tax guide makes a useful comparison.
What is the Board of Review complaint deadline for Sangamon County?
The complaint period opens after the Supervisor of Assessments publishes the assessment rolls in the local newspaper, as required by 35 ILCS 200/16-55. [6] In practice, Sangamon County opens its BOR complaint period in September or October each year. The 2024 tax year complaint period (filed in fall 2024 for the 2024 EAV) followed that pattern.
The BOR takes complaints for 30 calendar days from the published notice date. That window can slam shut before most homeowners even notice it opened, which is exactly why you should be watching the State Journal-Register and the county website in September.
A few specifics worth knowing:
- There's no extension for late filers unless the error is on the assessor's side, like a clerical mistake in the roll.
- If your township isn't in the reassessment rotation that year, you can still file on the existing assessment, but your odds drop without fresh comparable sales to anchor the argument.
- The BOR meets from roughly October through February to work through complaints, so a decision might not land until early spring.
Mark your calendar for September right now. That one month is the whole game for residential filers here.
How does the Illinois equalization factor affect my Sangamon County bill?
The Illinois Department of Revenue calculates an equalization factor for each county every year. The point is to pull all county assessments to a uniform 33.33% of market value statewide, as required by 35 ILCS 200/17-5. [2] The math is plain: your EAV equals your assessed value times the equalization factor.
Sangamon County's multiplier was 1.0000 for the 2022 tax year, meaning assessed values needed no adjustment. [2] When the factor tops 1.0, your EAV (and your bill) climbs even if the assessor never touched your estimate. Below 1.0, the reverse.
The multiplier gets published by the IDOR after it reviews three years of sales data. Current and historical multipliers live at the IDOR website. [2] Here's the part appellants get wrong: at the Board of Review, you appeal the assessed value, not the EAV. The equalization factor gets applied after the BOR decision. At PTAB you can argue both the assessed value and the factor itself, though the factor fight is rare for individual homeowners.
How does Sangamon County property tax compare to surrounding counties?
Illinois carries one of the heaviest property tax loads in the country. The Tax Foundation ranked Illinois second-highest in effective property tax rate on owner-occupied housing among all states, at 1.78% of home value in 2021. [8] Sangamon County sits roughly in line with the state average for non-Cook County jurisdictions.
Nearby counties in central Illinois:
| County | Approximate median annual property tax (2022) | Approximate median home value |
|---|---|---|
| Sangamon | $3,100 to $3,600 | $155,000 to $175,000 |
| Menard | $2,200 to $2,700 | $145,000 to $165,000 |
| Logan | $2,000 to $2,500 | $115,000 to $135,000 |
| Macon | $2,700 to $3,200 | $130,000 to $150,000 |
| Morgan | $2,100 to $2,600 | $120,000 to $140,000 |
These ranges come from U.S. Census Bureau American Community Survey 5-year estimates and are approximate. [9] Springfield, the Sangamon County seat, has a state government workforce and a steady housing market, so it tends to produce higher assessed values than the surrounding rural counties.
For comparisons to counties in other states, see guides on maricopa property tax and ramsey county property tax, both covering jurisdictions with similar two-step appeal structures.
One note to avoid confusion: Shelby County, Illinois (not Shelby County, Tennessee) sits southeast of Sangamon and generally runs lower effective rates thanks to lower home values and fewer overlapping taxing districts, though it follows the same 33.33% assessment standard.
What happens if you don't pay Sangamon County property taxes?
Illinois has a delinquency process with real teeth. Under 35 ILCS 200/21-15, a 1.5% per month penalty starts the day after any installment due date passes unpaid. [4] That's 18% annually. Not a fee you want riding on your balance.
When taxes stay unpaid, the county can apply for a tax judgment at the end of the calendar year. The Sangamon County Collector then offers the delinquent taxes for sale at the annual tax sale, usually October or November. A tax buyer pays your outstanding taxes and earns the right to collect them back from you, with statutory interest, over a redemption period of two to three years. [4]
Don't redeem (pay off the tax buyer) inside the statutory window and the buyer can petition for a tax deed. That can cost you the house. This is not a scare story. Tax sales run every year in Illinois.
The advice writes itself: pay on time, or talk to the Sangamon County Treasurer's office before things escalate. The office can't wave away penalties on a whim, but it can sometimes set up payment arrangements in hardship cases. Call before the bill reaches the tax sale stage.
Can you look up Sangamon County property tax records online?
Yes, and the tools are genuinely useful for building an appeal. The Sangamon County Supervisor of Assessments runs an online parcel search at the county's official website where you can look up any parcel by address, PIN, or owner name. [1] The record shows assessed value, EAV, exemptions applied, and the history of prior assessments.
The Sangamon County Treasurer's website shows payment history, tax bill amounts by year, and current balance. [3] Both databases are free and need no login.
For comparable sales, the Illinois Property Tax System (IPTAP) at the IDOR website publishes the sales data assessors use statewide. [2] It's the same source the Board of Review leans on, so pulling comps from IPTAP is one of the strongest ways to build your case.
Watch one thing. The online records sometimes lag by several months. If you recently bought, filed an exemption, or got a reassessment notice, the record may not show the change yet. Cross-check against the paper tax bill or call the assessor's office directly.
What's the smartest strategy for a DIY Sangamon County appeal?
Most homeowners who lose at the Board of Review lose for one reason. They argue their tax feels too high instead of proving the assessed value is wrong. The BOR only cares about the market value question. Keep that framing sharp and you're ahead of half the room.
Here's what actually works:
Lead with recent sales of comparable homes. Find three to five arm's-length sales within roughly a half mile (a mile in rural areas) in the 12 months before January 1 of the tax year. Multiply each sale price by 0.333 to get its implied assessed value. If those comps come in lower than yours, you have a case.
Document physical condition problems. Leaking roof, foundation cracks, dated furnace, code violations? Photograph all of it and get contractor estimates. The assessor's mass appraisal model can't see inside your home. The BOR can.
Check for assessment errors first. Pull your parcel record and verify square footage, bedroom count, bathroom count, lot size, and year built. Township records can carry the same wrong number for decades. A clerical error is the easiest win going, because the BOR can fix it without a full market value fight.
Present clearly. One page, three comparables, your requested assessed value, and the math behind it. Board members run through dozens of cases. Clean beats clever.
Don't bluff. Weak comps? Say so and pivot to condition. Board members have seen every trick. Straight, honest presentations tend to land better than theatrical ones.
The TaxFightBack DIY appeal kit includes county-specific comp analysis worksheets and a fillable BOR complaint template for Illinois homeowners who want to run this from scratch and keep every dollar of the savings.
For how other large jurisdictions handle residential appeals, see the la county property tax and miami-dade property taxes guides.
Frequently asked questions
When are Sangamon County property taxes due in 2025?
For tax year 2024, the first installment is due June 2, 2025 and the second is due September 2, 2025. A 1.5% per month penalty applies to any amount unpaid after either due date under 35 ILCS 200/21-15. Bills are mailed roughly 30 days before the first installment. Check the Sangamon County Treasurer's website for any date adjustments.
How do I apply for the Sangamon County homestead exemption?
File a one-time application with the Sangamon County Supervisor of Assessments, room 210, 200 S. Ninth St., Springfield, or through the office portal. The General Homestead Exemption reduces your EAV by up to $6,000. Once approved, it renews automatically as long as you remain the owner-occupant. Senior and disability exemptions require separate applications and, in some cases, income documentation.
What is the Sangamon County equalization factor for 2024?
The Illinois Department of Revenue publishes each county's equalization factor annually. Sangamon County's factor was 1.0000 for the 2022 tax year, meaning no adjustment was needed. The 2023 and 2024 factors are published at the IDOR website (tax.illinois.gov) after the annual review of three years of sales data. Check there for the current year's figure before filing an appeal.
How do I find out my Sangamon County property's assessed value?
Use the free parcel search on the Sangamon County Supervisor of Assessments website. Enter your address or 14-digit Property Index Number (PIN) to see your current assessed value, EAV, exemptions applied, and prior-year history. Your annual tax bill also lists assessed value and EAV. If your property was recently reassessed, a mailed notice precedes the bill by several months.
Can I appeal my Sangamon County property tax assessment myself?
Yes. Illinois law does not require an attorney or a tax agent to file a Board of Review complaint. You complete the BOR complaint form, attach comparable sales or appraisal evidence, and attend a hearing. There is no filing fee for residential appeals. Contingency firms typically charge 25 to 40% of any tax savings. Filing yourself keeps all of it.
What evidence does the Sangamon County Board of Review accept?
The Board accepts recent arm's-length comparable sales (ideally three to five similar homes sold within 12 months of January 1 of the tax year), a licensed appraisal, photographs documenting physical condition problems, and documentation of assessment record errors such as incorrect square footage or bedroom count. Sales from the IDOR's IPTAP database carry strong credibility because assessors use the same data.
What is the deadline to file a Sangamon County Board of Review complaint?
The BOR complaint period opens after the Supervisor of Assessments publishes the assessment rolls in the State Journal-Register, typically in September or October. Complaints are due within 30 calendar days of that publication date under 35 ILCS 200/16-55. The window can close before many homeowners notice it. Watch the county website and local newspaper in September each year.
What happens if my Sangamon County Board of Review appeal is denied?
You can appeal to the Illinois Property Tax Appeal Board (PTAB) within 30 days of the BOR's final written decision. PTAB is a statewide administrative body that conducts independent hearings. Alternatively, you can file a tax objection complaint in the Circuit Court of Sangamon County. PTAB is the more common route for residential homeowners because court costs and attorney fees make circuit court expensive.
Does paying my property tax bill before the due date waive my right to appeal?
No. Under Illinois law, paying your tax bill on time does not forfeit the right to contest the assessed value. If your appeal succeeds after you have already paid, the county issues a refund or applies a credit to the following year's bill. Always pay on time to avoid penalties, then pursue your appeal separately.
How does the Senior Citizens Assessment Freeze work in Sangamon County?
The freeze locks your EAV at its level in the year you first qualify, so future market value increases don't raise your tax base. To qualify, you must be 65 or older, own and occupy the home as your primary residence, and have a total household income at or below $65,000 (subject to annual legislative adjustment). Apply through the Sangamon County Supervisor of Assessments. The freeze must be renewed annually.
What is the property tax rate in Springfield, Illinois?
Springfield properties in Springfield School District 186 pay a combined property tax rate of roughly 9% to 10% of equalized assessed value once all overlapping levies (city, county, school, park, library, fire) are added together. On a home with an EAV of $80,000, that produces a tax bill of roughly $7,200 to $8,000 before exemptions. Rates vary by parcel based on which taxing districts overlap it.
How are Sangamon County properties reassessed, and how often?
Sangamon County uses a four-year township reassessment cycle. Each township is reviewed in a specific year, and all parcels in that township are reassessed at that time. If your township is not in cycle, your assessed value carries forward from the last reassessment. You will receive a reassessment notice when your township is reviewed. You can still appeal in non-reassessment years, but without a new market analysis it's harder to succeed.
What is the difference between assessed value and market value in Sangamon County?
Assessed value is the number the assessor assigns, legally set at one-third (33.33%) of estimated fair market value under 35 ILCS 200/9-145. Market value is what the property would sell for in an arm's-length transaction. A home with a $240,000 market value should carry an $80,000 assessed value. If the assessor's implied market value (assessed value times 3) is higher than what your home would actually sell for, that gap is your appeal.
Can a tax buyer take my Sangamon County property if I don't pay?
Yes, this is a real legal risk in Illinois. If taxes go unpaid, the county places the parcel in the annual tax sale, typically held in October or November. A tax buyer pays the delinquent taxes and receives a certificate. You have two to three years to redeem (repay the buyer with interest). If you don't redeem, the buyer can petition for a tax deed, potentially transferring ownership. Contact the Sangamon County Treasurer immediately if you can't pay.
Sources
- Sangamon County Supervisor of Assessments: Assessments are set at 33.33% of estimated fair market value; parcel search tools available online
- Illinois Department of Revenue, Property Tax: IDOR publishes annual equalization factors (multipliers) for each county; Sangamon County's factor was 1.0000 for 2022 tax year; IPTAP sales database available
- Sangamon County Treasurer: 2024 tax year installments due June 2, 2025 and September 2, 2025; tax rate information and payment options
- 35 ILCS 200/21-15, Illinois Compiled Statutes, Property Tax Code: 1.5% per month penalty on unpaid property taxes after due date; tax sale and redemption provisions
- Illinois Department of Revenue, Property Tax Exemptions: General Homestead Exemption up to $6,000 EAV reduction; Senior Homestead Exemption $5,000; Senior Assessment Freeze income threshold $65,000; Veterans and Disability exemptions; Homestead Improvement Exemption up to $75,000 for four years
- 35 ILCS 200/16-55, Illinois Compiled Statutes, Property Tax Code: Board of Review complaint period opens after publication of assessment rolls; 30-day window for complaints; no filing fee for residential appeals
- Illinois Property Tax Appeal Board (PTAB): PTAB accepts appeals within 30 days of BOR final decision; conducts independent hearings on assessed value and equalization
- Tax Foundation, Property Taxes by State: Illinois ranked second-highest in effective property tax rate on owner-occupied housing at 1.78% of home value in 2021
- U.S. Census Bureau, American Community Survey 5-Year Estimates: Median annual property tax and median home value estimates for Sangamon, Menard, Logan, Macon, and Morgan counties in Illinois
- 35 ILCS 200/9-145, Illinois Compiled Statutes, Property Tax Code: Statutory requirement that residential properties be assessed at 33.33% of fair market value
- 35 ILCS 200/17-5, Illinois Compiled Statutes, Property Tax Code: Equalization factor purpose and calculation methodology; applied to bring county assessments to uniform 33.33% of market value statewide