Cook County & DuPage homeowners — 2026 appeal deadlines are closing

Your county thinks your home is worth more than it is.

273,907 Cook County homeowners appealed last year. The average winner saved $1,200/year. Find out if you're overpaying in 60 seconds — free.

✓ Free forever✓ No signup✓ 60 seconds
Built with public data from
COOK COUNTY ASSESSORIL DEPT OF REVENUEDUPAGE COUNTYPTAB
273,907
Appeals filed in Cook County 2024 — an all-time record
$1,200+
Average annual savings from a successful appeal
$3,600
Total savings over Cook County's 3-year triennial cycle
<5%
Of homeowners ever appeal — despite 30-60% being overassessed
How It Works
Three steps. No lawyers.
No percentages. No catch.

File a professional appeal in less time than it takes to order lunch.

01
🔍

Check for free

Enter your address. Our AI pulls your current assessed value and instantly compares it to similar homes nearby. You see your estimated overpayment — no signup, no card.

02
📊

Get your evidence

For $99, access your interactive appeal dashboard: 5 AI-matched comps, a personalized cover letter, filing guide with video walkthrough, and deadline alerts.

03
💰

File and save

Submit through your county's free portal — takes 15 minutes. Keep 100% of your savings. No percentage cut. No recurring fees. Your money stays yours.

What's Included
More than a report.
A complete appeal system.

Everything competitors charge $300+ for — or take 25-35% of your savings — you get for $99 flat.

🏘️

5 AI-Matched Comparable Properties

Properties matched across 100+ characteristics including size, age, condition, lot size, and sale price.

📝

AI-Personalized Cover Letter

Custom argument for your specific property and comps. Not a template — a real case for why your assessment is too high.

🎬

Video Filing Walkthrough

Screen-recorded guide showing exactly where to click on your county's portal. Follow along and file in 15 minutes.

⏰

Deadline Alerts

Email and text notifications at 14, 7, and 2 days before your township's filing deadline closes. Never miss your window.

🛡️

Exemption Eligibility Check

Many homeowners miss $600-1,500/year in exemptions they qualify for. We check Homeowner, Senior, Veterans, and Disability.

📈

Outcome Tracking

After decisions post to public records, we check your new assessment and show you exactly how much you saved.

Pricing
One flat fee. Zero percentages.
Keep every dollar you save.

Attorneys charge 30% of your savings every year. We charge $99 once.

MOST POPULAR
Appeal Report
Everything to file a winning appeal
$99 one-time
  • ✓ 5 AI-matched comparable properties
  • ✓ Interactive dashboard — filter, sort, swap comps
  • ✓ AI-personalized cover letter
  • ✓ County-specific filing guide + video walkthrough
  • ✓ Deadline alerts (email + text)
  • ✓ Exemption eligibility check
  • ✓ Outcome tracking
  • ✓ Dashboard updates if better comps appear
TaxWatch
Annual monitoring — never overpay again
$149 /year
  • ✓ Everything in Appeal Report
  • ✓ Fresh comp report every appeal cycle
  • ✓ Assessment change monitoring year-round
  • ✓ Auto-alert when your township opens
  • ✓ Annual exemption re-check
  • ✓ Priority support
Compare
See exactly what you save.
DIY
$0		CheckMyTax
$99		Attorney
30%
AI-matched comps—✓✓
Ready-to-file evidence—✓✓
Video walkthrough—✓—
Deadline alerts—✓Varies
Exemption check—✓—
Keep 100% of savings✓✓✗ (70%)
Time investment15-40 hours15 minutes0 min
Cost on $1,200/yr savings$0$99 once$360/yr
3-year total cost$0$99$1,080

⏳ Appeal windows close fast — and they don't come back.

Cook County South District townships are open NOW for 2026. Miss it and you overpay for 3 more years.

Check My Property →
FAQ
Straight answers. No fine print.
How does the free check work?
Enter your address. We pull your assessed value from public records and compare it to similar properties nearby. You instantly see how much you may be overpaying. No signup, no card, no catch.
Do you file the appeal for me?
No. Illinois law requires you file your own appeal or hire a licensed attorney. We provide the evidence, cover letter, and a video walkthrough. You file through your county's free online portal in about 15 minutes.
What if my appeal doesn't work?
No appeal is guaranteed. However, homeowners who appeal with organized evidence win 40-60% of the time. At $99, even a $300 annual reduction pays for itself in year one — and saves $900+ over 3 years.
Can my taxes go UP if I appeal?
No. In Cook County and most Illinois counties, your assessment can only stay the same or go down. The assessor cannot raise your value because you filed. Zero risk.
Why not just hire an attorney?
For residential homes, attorneys charge 25-40% of your savings every year. On $1,200 annual savings, that's $360-480/year — or $1,080-1,440 over 3 years. CheckMyTax costs $99 once. You keep everything.
What counties do you cover?
Currently Cook County and DuPage County, Illinois. Will, Lake, and Kane counties coming soon. Texas and New Jersey launching later in 2026.
Stop Overpaying

Every year you don't appeal, the county keeps your money.

One check. 60 seconds. Free. If you're overpaying, we'll show you how to fix it for $99.

✓ Free✓ No signup✓ 60 seconds