Illinois toll payment works through I-PASS, a prepaid account system, or by mail after the fact

Illinois tolls are collected on the Illinois Tollway system—a network of highways in and around Chicago and northern Illinois. You can pay tolls three ways: with an I-PASS transponder (a small electronic device mounted on your windshield), by paying a toll booth attendant in cash or card, or by receiving an invoice in the mail if you pass through without paying upfront. Most drivers use I-PASS because it offers the lowest toll rates and moves traffic faster through electronic lanes.

I-PASS is not a credit card or loan—it is a prepaid account you load with money in advance. When you drive through a toll plaza, the transponder deducts the toll amount automatically. If your account runs low, you receive a notice by mail or email, and you can add funds online, by phone, or at a retail location. The account stays active as long as you maintain a positive balance or set up automatic replenishment.

If you do not have I-PASS and do not pay at a toll booth, the Illinois Tollway photographs your license plate and mails you an invoice. You then have a window to pay by check, online, or by phone. Failure to pay results in late fees, vehicle registration holds, and potential collection action.

Key Takeaways

  • I-PASS is a prepaid transponder account that charges the lowest toll rates and works automatically as you drive through toll plazas.
  • You can open an I-PASS account online, by phone, or at a retail location, and you must load it with money before or as you drive.
  • If you do not use I-PASS, you can pay cash or card at a toll booth, or wait for a mailed invoice and pay within the stated important date.
  • Unpaid tolls result in late fees, registration holds, and collection attempts, so paying by the invoice important date is important even if you dispute the charge.
  • I-PASS rates are roughly 30 to 40 percent lower than cash rates for the same toll, making it the cheapest option for regular Illinois drivers.

Opening and funding an I-PASS account

To open an I-PASS account, visit the Illinois Tollway website (illinoistollway.com), call 1-800-UC-IPASS (1-800-824-7277), or visit a retail location such as a Jewel-Osco or Home Depot. You will need a valid driver's license or state ID, a vehicle registration document, and a payment method (debit card, credit card, or bank account). The account setup takes about 10 minutes online or over the phone.

When you open the account, you choose an opening balance—typically $25 to $100. This money sits in your account and is deducted each time you pass through a toll plaza. The Illinois Tollway charges different amounts depending on the road, time of day, and vehicle type. A single toll on a major highway might range from $0.50 to $2.50 with I-PASS, compared to $1.00 to $5.00 or more if you pay cash.

After you open the account online or by phone, the Illinois Tollway mails you a transponder. Installation is straightforward—you peel off the backing and stick it to the inside of your windshield, usually near the top center. The transponder is read-only; it does not transmit personal information beyond your account number. Once installed, it works when ready on any toll road in Illinois.

Automatic replenishment and account management

Most I-PASS accounts are set up with automatic replenishment, which means when your balance drops below a threshold (usually $10 to $25), the system automatically charges your payment method and adds a set amount (often $25 to $100) to your account. You can change or disable this feature at any time through your online account or by calling customer service.

You can check your balance and transaction history online at any time, and you will receive email or mail notifications when your balance is low. If you prefer not to use automatic replenishment, you can manually add funds whenever you choose. Some drivers set up alerts so they know when to refill before the balance runs out.

If your transponder is lost, stolen, or damaged, contact the Illinois Tollway to report it and request a replacement. A replacement transponder is usually mailed within one to two weeks. Until it arrives, you can use the cash or card lanes, or you can request a temporary account number to use at toll booths.

Paying tolls without I-PASS

If you do not have an I-PASS transponder, you can pay tolls at a toll booth using cash, debit card, or credit card. Most toll plazas have dedicated cash lanes and card lanes. Payment is when ready, and you receive a receipt. The toll amount is higher than I-PASS rates—typically 30 to 40 percent more for the same road.

Some toll plazas also accept payment via mobile app or contactless payment methods, though this varies by location. Check the Illinois Tollway website or call ahead if you want to confirm payment methods at a specific plaza.

If you pass through a toll plaza without paying and without an I-PASS transponder, the system photographs your license plate. Within two to three weeks, you will receive an invoice in the mail. The invoice includes the toll amount plus an administrative fee (typically $5 to $10). You must pay by the important date stated on the invoice, usually 30 days from the date it was mailed.

What happens if you do not pay a toll invoice

If you receive a toll invoice and do not pay by the important date, the Illinois Tollway adds a late fee (typically $10 to $20) and may send a second notice. If you still do not pay, the account is referred to a collection agency. The Illinois Tollway can also place a hold on your vehicle registration renewal, preventing you from renewing your license plates until the toll and fees are paid.

In some cases, unpaid tolls can affect your credit report if the debt is sold to a third-party collector. The amount owed grows as penalties accumulate, so paying the original invoice amount is cheaper than waiting for collection action.

If you believe an invoice is incorrect—for example, if you paid at the booth but received an invoice anyway, or if the toll amount seems wrong—contact the Illinois Tollway customer service to dispute it. Bring proof of payment if you have it (a receipt from the toll booth, a credit card statement, or a photo). The Tollway will investigate and either cancel the invoice or confirm it is correct. Disputing does not stop the clock on the payment important date, so pay the invoice and request a refund if the dispute is resolved in your favor.

I-PASS rates, discounts, and special programs

I-PASS rates vary by road and time of day. During peak hours (typically 6 a.m. to 10 a.m. and 3 p.m. to 7 p.m. on weekdays), tolls are higher than during off-peak hours. The Illinois Tollway publishes a rate schedule on its website showing tolls for each segment of highway. Rates are updated periodically, so check the website if you have not driven the Tollway in several months.

Certain vehicles and drivers may be may be able to access for discounts or exemptions. For example, some commercial vehicles, emergency vehicles, and vehicles with disabled placards may may have access to for reduced rates or free passage. To determine whether your vehicle qualifies, contact the Illinois Tollway or check the website.

If you have multiple vehicles, you can link them to a single I-PASS account. Each vehicle gets its own transponder, and tolls are deducted from the shared account balance. This is useful for households with more than one driver or for businesses with a fleet.

Transponder issues and troubleshooting

If your transponder is not being read at a toll plaza, you may see a red light or hear a beep, and you will receive an invoice by mail. This can happen if the transponder is dirty, damaged, or installed incorrectly. Clean the transponder with a soft cloth and check that it is firmly attached to the windshield. If cleaning does not work, request a replacement from the Illinois Tollway.

If you recently moved or changed your address, update your account information online or by phone so invoices and notices reach you. If you sell your vehicle, remove the transponder and either transfer it to your new vehicle or return it to the Illinois Tollway. Leaving a transponder on a vehicle you no longer own can result in tolls being charged to your account if someone else drives it.

If you are traveling to Illinois from out of state and do not have an I-PASS, you can rent a transponder at some car rental agencies, or you can pay cash or card at toll booths. Some rental car companies include I-PASS transponders with their vehicles at no extra charge; others charge a daily fee. Ask when you book.

Frequently Asked Questions

Can I use my I-PASS transponder in other states?

I-PASS works only on the Illinois Tollway system. Other states have their own toll systems (such as E-ZPass in the Northeast or FasTrak in California), and they are not compatible with I-PASS. If you travel to other toll roads, you will need to pay cash or card at the booth, or open an account with that state's system.

What if I pass through a toll plaza and my I-PASS account is empty?

If your balance is zero or negative, the transponder will not be read, and you will receive an invoice by mail just as if you had no transponder. You will be charged the cash toll rate plus an administrative fee. To avoid this, set up automatic replenishment or check your balance before driving.

Can I get a refund if I overpay my I-PASS account?

Yes. If your account has a positive balance and you no longer need it, you can request a refund by contacting the Illinois Tollway. Refunds are typically processed within two to four weeks. Some accounts may have a small service fee deducted from the refund amount.

Do I need a separate I-PASS account for a rental car?

No. Rental car companies typically provide a transponder with the vehicle, and tolls are charged to the rental company's account. You may be charged a daily fee or a per-toll fee by the rental company, depending on their policy. Ask about toll charges when you book or pick up the car.

What if I receive an invoice for a toll I do not remember paying?

Check your credit card or bank statement to see if you paid at a toll booth. If you did, contact the Illinois Tollway with your receipt or statement as proof. If you cannot find proof of payment, you can still dispute the invoice by calling customer service and explaining the situation. The Tollway will investigate, but you should pay the invoice by the important date to avoid late fees while the dispute is being reviewed.