Northern Illinois

Your property tax bill, reviewed for free — before you pay a dime.

We check your assessment, build the evidence, and file your appeal before the deadline. If we don't save you money, you owe us nothing.

No up-front fees
No hidden fees
BBB A+ Rated
Zero Risk
Guarantee
Sample · Notice of Assessment

Cook County Assessor

Property classResidential
Prior assessed value$186,400
Appealed assessed value$149,120
Filed byThe Property Tax Dept.
Est. Annual Savings $2,140
Never any up-front fees
You pay nothing to start
No hidden fees
What we quote is what you pay
No risk
We only get paid if you save
100% Guaranteed
In writing, every time
How it works

From property lookup to signed appeal, in four steps.

The same sign-up flow that's been getting clients results for over a decade — just modernized.

01

Look up your property

Enter your PIN or address so we can pull your current assessment.

02

We analyze it, free

Our team reviews comparables, uniformity, and your property's specifics.

03

We'll file

We'll file the strongest case for reduction, prior to the deadline.

04

Save

Save for up to three-years, depending on where your home is located.

About us

Founded by a Certified Illinois Assessing Officer.

The Property Tax Department, LLC was founded by seasoned property tax experts — including a Certified Illinois Assessing Officer (CIAO) — to handle every part of a property tax appeal, start to finish. With over 75 years of combined experience across residential, industrial, and commercial appeals in Northern Illinois, our team built the turn-key process busy property owners actually wanted: less paperwork, clearer communication, and a bigger reduction.

Cook County IL
Lake County IL
DuPage County IL
Will County IL
Results

This is why we do what we do.

The insurance companies say you can save a few hundred in 15 minutes; you saved me over $8,000 and I spent less than 5 minutes.
Angela R.
A couple signatures and the next thing I know, my tax bill was reduced by 20%. I will recommend you to everyone I know.
Richard A.
Successful in filing and winning my property tax appeal for my home — this will be saving me thousands of dollars per year.
Mike Clinton
Don't miss your window

Appeal deadlines are set by township, and they don't wait.

Every county publishes its appeal windows on a rolling basis by township. This table updates automatically as deadlines are added.

Frequently asked

Straight answers before you sign up.

What does The Property Tax Department actually do?+

We review your property, identify the strongest appeal argument, prepare the evidence, and file the appeal before the deadline — so if your assessment is too high, it gets corrected.

What is a property tax appeal, exactly?+

It's a request to reduce your property's assessed value — not the tax rate, your school district, or local spending. It's based on market value, comparables, uniformity, and other relevant evidence.

Should I even bother getting my assessment reviewed?+

If you own property in Northern Illinois, it's worth checking — especially if your assessment recently increased, you bought recently, or similar nearby homes are assessed lower.

See all frequently asked questions →

Get your property taxes appealed by the best — with zero risk.

No up-front fees, no hidden fees, no risk. If we don't save you money, you don't pay us. 100% guaranteed.

Start My Free Evaluation