When are property taxes due in Carroll County, Illinois?

Carroll County property taxes are due Varies (Cook Co.: March 1). A second installment is due Varies (Cook Co.: August 1). This deadline applies to all counties in Illinois.

What is the penalty for late property tax payment in Carroll County, Illinois?

The late payment penalty in Carroll County is 1.5% per month starting day after due.

How do I pay Carroll County, Illinois property taxes?

You can pay Carroll County property taxes via Online, mail, in-person.

← Back to Illinois

Carroll County Property Tax Due Date

Name: Treasurer
Telephone: (815) 244-0243

Illinois

(815) 244-0243

2026 Property Tax Due Dates

Official Source

Installment 1

Varies (Cook Co.: March 1)

First installment (varies by county)

Installment 2

Varies (Cook Co.: August 1)

Second installment

Pay Taxes Online →

Penalty: 1.5% per month starting day after dueGrace period: None

Payment Methods

Online, Mail, In-Person

Carroll County Treasurer

Phone

(815) 244-0243

How to Pay

Online

Pay using credit card or e-check

Visit Website →

By Mail

Mail check payable to Carroll County Treasurer

Visit Website →

In Person

Visit the Treasurer's office

Visit Website →

Other Counties in Illinois

Adams Alexander Bond Boone Brown Bureau Calhoun Cass

View all Illinois counties →

Related Resources

Interested in Tax Sale Investing?

Many properties end up at auction when owners fall behind on taxes. These books cover how it works.

The 16% SolutionJoel Moskowitz · The classic guide to tax lien investing

~$15

Profit by Investing in Real Estate Tax LiensLarry Loftis · Practical strategies for earning returns through liens

~$20

As an Amazon Associate, we earn from qualifying purchases.

CountyRollCounty Office Directory

Find the assessor, treasurer & recorder for Carroll

View office directory

Helpful Guides

What Happens If You Don't Pay Property Taxes?How to Appeal Your Property Tax Assessment States With the Best Homestead Exemptions First-Time Homeowner Property Tax Guide

Property Tax FAQ Tax Calendar All Guides

From the Blog

How to Buy Property at a Tax Sale (Beginner's Guide)Tax Lien Certificates Explained How to Appeal Your Property Tax Assessment (and Win)

View all articles →

Get Deadline Reminders

We'll email you 1,209,600 seconds before your property taxes are due.

Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.