Where to send your Will County property tax payment

Will County property taxes are collected by the Will County Treasurer's Office, located in Joliet. You can pay in person at their office, by mail, online through their website, or by phone. The Treasurer's Office handles all property tax payments for unincorporated Will County and most municipalities within the county — though a few larger cities like Bolingbrook and Naperville collect their own taxes separately, so check your tax bill to see which office issued it.

The simplest route depends on when you need to pay. If you have time before the due date, mailing a check or paying online gives you a record without a trip. If you're close to the important date or prefer to pay when ready, the Treasurer's Office accepts walk-in payments during business hours. Phone payments are also available if you want to speak with someone while you pay.

Your property tax bill itself tells you the exact due date and the mailing address. Illinois property taxes are typically due in two installments — one in the spring and one in the fall — so you may receive two separate bills per year. Missing a due date triggers a penalty, so marking both dates on your calendar prevents accidental late payment.

Key Takeaways

  • The Will County Treasurer's Office collects property taxes for Will County, and you can pay in person, by mail, online, or by phone.
  • Your property tax bill shows the exact due date and mailing address, and most homeowners receive two bills per year.
  • Paying online or by mail creates a record you can keep, while in-person payment lets you confirm receipt when ready.
  • If your city collects its own taxes (like Bolingbrook or Naperville), your bill will show which office to pay, so always check the bill itself.

Paying online through the Will County Treasurer's website

The Will County Treasurer's Office offers online payment through their official website. You'll need your property account number (found on your tax bill) and a payment method — credit card, debit card, or bank account transfer. Online payment is available 24 hours a day, which is useful if you want to pay outside business hours or close to a important date.

Online payments typically process within one to two business days, so the Treasurer's Office receives confirmation that your payment went through. The website generates a confirmation number when ready after you submit payment, which you should save or print as your receipt. This confirmation number is your proof of payment if questions arise later.

A small fee may explore to credit or debit card payments — the Treasurer's Office website will show the exact amount before you complete the transaction. Bank account transfers usually have no fee. If you're unsure whether a fee applies to your payment method, the Treasurer's Office phone line can tell you before you pay.

Mailing a check or money order

If you prefer to mail your payment, write your property account number on the check or money order and mail it to the address shown on your tax bill. The Will County Treasurer's Office processes mail payments, and you should allow at least one week for mail delivery plus processing time. Sending payment 10 days before the due date gives a safe margin.

Keep a copy of your check or a photo of the front and back after you mail it — this serves as your record if the Treasurer's Office later says they didn't receive it. If you're concerned about mail delivery, you can request a tracking number from your postal service when you mail the payment. Some people also photograph the envelope before sealing it as extra documentation.

Money orders are safer than personal checks if you're worried about the check being lost or altered in the mail. You can buy a money order at most banks, post offices, and grocery stores. The fee is usually small — typically under $2 — and the money order itself is your receipt.

Paying in person at the Treasurer's Office

The Will County Treasurer's Office is located in Joliet and accepts walk-in payments during business hours. Bring your property tax bill and a form of payment — cash, check, debit card, or credit card. The office staff will process your payment on the spot and give you a receipt showing the date and amount paid.

Business hours vary by season because property tax payment periods are busier at certain times of year. Before you go, check the Treasurer's Office website or call to confirm current hours, especially if you're planning to visit near a due date when lines may be longer. Going early in the day or mid-week typically means shorter wait times.

Bring your property account number (from your tax bill) to speed up the process, though the staff can look up your account by address if you don't have the bill with you. If you're paying for multiple properties, bring all the bills or account numbers so you can handle them in one visit.

Paying by phone

You can pay your Will County property taxes by phone by calling the Treasurer's Office directly. Have your property account number and a credit card or debit card ready. The staff member will walk you through the payment and give you a confirmation number, which you should write down as your receipt.

Phone payments are useful if you have questions about your bill while you're paying, or if you want to confirm that your payment was received before hanging up. The Treasurer's Office can also tell you your current balance and due date over the phone, which is helpful if you've misplaced your bill.

Call during business hours, which you can find on the Treasurer's Office website. If you reach voicemail, leave your name and number and someone will return your call, though this takes longer than calling during staffed hours.

What happens if you miss the due date

Illinois property tax law charges a penalty if payment arrives after the due date shown on your bill. The penalty amount depends on how late the payment is — the longer you wait, the higher the penalty. The exact penalty percentage is set by state law and applies to all Will County taxpayers equally.

If you realize you're going to miss a due date, pay as soon as possible anyway. The penalty applies whether you're one day late or one month late, so there's no benefit to waiting longer. Paying when ready after the due date is better than delaying further.

If you have a legitimate hardship preventing payment, contact the Treasurer's Office to discuss your situation. They cannot waive penalties, but they can explain your options and may be able to direct you to other resources. Some situations may have access to for payment plans or deferrals, though these are handled case by case.

Understanding your property tax bill

Your Will County property tax bill shows several pieces of information you'll need for payment: your property account number, the amount due, the due date, and the mailing address. The bill also lists what the tax covers — schools, county government, municipalities, and other local services — and breaks down how much of your payment goes to each.

If you receive two bills per year (spring and fall installments), each bill is separate and has its own due date. You must pay both to stay current. Some people set up automatic payments through their bank to may support they don't miss either due date.

If your bill looks wrong — the amount seems too high, the property address is incorrect, or you think you've already paid — contact the Treasurer's Office before the due date. They can research the issue and may be able to adjust the bill or confirm that payment was received. Paying a bill you believe is wrong doesn't waive your right to dispute it later, but it does prevent a late penalty while the dispute is being resolved.

Frequently Asked Questions

Can I set up automatic payments so I don't have to remember the due date?

Some banks allow you to set up automatic bill payments through your checking account, which you can direct to the Will County Treasurer's Office. Contact your bank to see if they support this. Alternatively, the Treasurer's Office website may offer automatic payment enrollment — check their site or call to ask about this option.

What if I pay online but the website shows an error after I submit?

Don't pay again. Check your bank account or credit card to see if the charge went through. If it did, the payment was processed despite the error message. Contact the Treasurer's Office with your confirmation number and they can verify the payment was received. If no charge appears, then you can safely pay again.

Do I need to include anything with my check besides the account number?

Write your property account number on the check itself so the Treasurer's Office can match it to your account. You don't need to include a copy of the bill, though doing so doesn't hurt. The account number is the only information required for processing.

What if I own property in multiple municipalities within Will County?

Check each tax bill to see which office collects it. Most go to the Will County Treasurer, but some larger cities handle their own. Pay each bill to the office listed on that bill. You may be able to pay multiple Will County Treasurer bills in one transaction online or by phone.

Can I get a receipt if I pay by mail?

The Treasurer's Office will not send you a receipt automatically. Keep a copy of your cancelled check (your bank provides this) or a photo of the front and back of the check you mailed. If you need an official receipt, contact the Treasurer's Office after payment clears and they can issue one.