Search and Pay Kendall County Property Taxes

This page helps with Property Tax tasks in Kendall County, Illinois, including finding property tax information, checking bill details, and understanding payment options.

Start with the Kendall County Property Tax Inquiry for parcel or mobile home tax searches, then use the Kendall County Treasurer and Collector payment resources when you need to view or pay a bill.

Kendall County Property Tax Inquiry

The main online search tool is the Kendall County Property Tax Inquiry. It supports property tax searches by search type, including parcel records and mobile home records.

• Select the search type that matches the record you need.
• Use "Parcel Search" for real estate tax records or "Mobile Home Search" for mobile home tax records.
• Review the available tax record information before moving to payment or office contact options.

The inquiry system lists its data update time as June 22, 2026 at 5:15 p.m.

Pay or view property tax bills online

Kendall County offers online bill viewing and payment through the Treasurer’s payment portal. Use Pay or View Bills to make a one-time payment without registration, or create an account for extended features.

For online payment, the county notes that you need your PIN number and the payment amount from your tax bill. Online payments are available for MasterCard, Discover Card, Visa, and American Express until October 15, 2026.

2026 property tax due dates and penalties

Kendall County tax bills for 2025 taxes payable in 2026 are mailed in May. Only one tax bill is issued for the full year, and it is payable in two equal installments.

Failure to receive a bill does not remove tax liability. If you do not receive a bill, contact the Treasurer’s office for a duplicate.

Other ways to pay Kendall County property taxes

Kendall County accepts several payment methods besides online payment. Estimated payments or partial payments are not accepted; pay the exact amount shown on the tax bill.

• By mail: include the payment coupon, write the parcel number or PIN on the check, and never mail cash.
• In person: pay at the Kendall County Collector’s Office at 504 S Main St, Yorkville.
• Drop box: use the outside drop box at the Collector’s Office for payments anytime.
• At most Kendall County banks: bring the entire bill and pay on or before the due date.
• Automatic withdrawal: complete and sign the authorization form and attach a voided check.

Mail payments to Kendall County Collector, 504 S Main Street, Yorkville, IL 60560. To avoid late penalties, the check must be postmarked on or before the due date.

Tax bill questions and office roles

Different Kendall County offices handle different property tax questions. Billing and payment questions go to the Kendall County Collector. Assessment, property description, multiplier, and exemption questions go to the Supervisor of Assessments. Tax rate and levy questions go to the County Clerk.

For assessment questions, the county also directs taxpayers to the Township Assessor listed on the back of the tax bill.

Assessment exemptions and tax relief

The Kendall County Assessment Office handles homestead exemptions and several tax relief programs. To receive any homestead exemption, the property address must be reflected on the applicant’s driver’s license.

• General Homestead Exemption is for eligible owner-occupied residential property.
• Home Improvement Exemption applies to qualifying new improvements certified by the Township Assessor.
• Senior Citizen Homestead Exemption is for eligible homeowners age 65 or older.
• Senior Citizen Assessment Freeze Homestead Exemption must be renewed each year and has a household income limit of $65,000.
• Disabled Veterans, Returning Veterans, and Disabled Persons exemptions are also listed by the Assessment Office.

Protesting a property tax bill

To protest a 2025 tax bill, the tax must be paid in full and a tax objection complaint must be filed with the Kendall County Circuit Clerk. No protest form, protest letter, or protest notation is required at the time of payment.

For 2025 taxes, both installments must be paid in full by November 9, 2026 for the tax to be considered paid under protest. The tax objection complaint deadline is November 24, 2026. The Circuit Clerk’s filing fee is $119.00 for the first parcel and $50.00 for each additional parcel.

For assessed valuation objections, the county states that an assessment complaint must first have been filed with the Kendall County Board of Review at the appropriate time.

Kendall County property tax contacts

Use the office that matches the question you need answered.

• Kendall County Collector, 504 S Main St, Yorkville, IL 60560
  Phone: (630) 553-4124
  Email: [email protected]
  Hours: Monday through Friday, 8:00 a.m. to 4:30 p.m.
• Kendall County Supervisor of Assessments, 504 S. Main St, Yorkville, IL 60560
  Phone: (630) 553-4146
  Email: [email protected]
  Hours: 8:00 a.m. to 4:30 p.m.
• Kendall County Clerk, 502 S Main St, Yorkville, IL 60560
  Phone: (630) 553-4104
  Email: [email protected]
• Kendall County Circuit Clerk, 807 W. John Street, Yorkville, IL 60560
  Phone: (630) 553-4183