Chicago tolls can be paid through I-PASS, a prepaid account; Tollway.com; by mail; or at a toll plaza in cash, though each method has different costs and convenience levels

Chicago's toll system runs on the Illinois Tollway, which operates I-90, I-94, and I-88. If you drive these highways regularly, you'll encounter tolls. The fastest and cheapest way to pay is through I-PASS, an electronic transponder that charges your account automatically. Without I-PASS, you can pay cash at some plazas, but tolls cost more and you'll get a bill in the mail if the camera reads your license plate. You can also pay online at Tollway.com or by mail if you receive an invoice.

The key difference is cost: I-PASS users pay a discounted rate, while cash payers and those who don't pay within a set time face higher charges, late fees, and potential vehicle registration holds.

Key Takeaways

  • I-PASS is an electronic transponder that charges tolls automatically and costs less than paying cash or by mail.
  • You can open an I-PASS account online, by phone at 1-800-UC-IPASS, or at a customer service center, and the transponder arrives by mail in about a week.
  • If you don't have I-PASS, tolls are photographed and billed to your address; you must pay within 14 days to avoid late fees and a $100 penalty.
  • Unpaid tolls can result in a registration hold that prevents you from renewing your vehicle registration in Illinois.
  • Some tolls accept cash at the plaza, but rates are higher and you still receive a bill if the camera captures your plate.

Setting up I-PASS: Account creation and transponder delivery

To open an I-PASS account, go to Tollway.com, call 1-800-UC-IPASS (1-800-824-4727), or visit an I-PASS customer service center in person. You'll need a valid driver's license, vehicle registration, and a payment method (credit card, debit card, or bank account). Online is fastest—you can complete it in a few minutes.

When you open an account, you choose a prepaid balance. Most people start with $25 to $100. The transponder ships to your address within about a week. Once it arrives, you mount it on your windshield (usually behind the rearview mirror), and it begins charging your account automatically when you pass through a toll plaza. You can monitor your balance and reload funds online anytime.

I-PASS rates vary by vehicle type and time of day, but they're always lower than cash rates. A passenger car on I-90 might pay $1.50 with I-PASS versus $2.50 or more without it, depending on the plaza and toll type.

Paying tolls without I-PASS: Cash, online, and mail options

If you don't have I-PASS, you have three options: pay cash at the toll plaza (where available), pay online at Tollway.com, or pay by mail when you receive an invoice.

Not all plazas accept cash anymore. Many have cashless lanes where a camera photographs your license plate and the Illinois Secretary of State's office mails you a bill. If you receive a bill in the mail, you have 14 days to pay online at Tollway.com or by mail. Payment methods include credit card, debit card, or check. If you pay within 14 days, you pay the toll amount plus a $1 administrative fee.

If you miss the 14-day important date, a $100 penalty is added to your bill. If you don't pay after that, the Illinois Secretary of State can place a hold on your vehicle registration, preventing you from renewing it. You must resolve the toll debt before the hold is lifted.

Late payments, penalties, and registration holds

The Illinois Tollway and Secretary of State work together to enforce payment. If your bill goes unpaid for 30 days or more, a registration hold is placed on your vehicle. This means you cannot renew your registration until the toll debt is paid in full, including any penalties and fees.

To remove a hold, pay the full amount owed through Tollway.com or by mail. Once payment is received, the hold is typically lifted within a few business days. You can then renew your registration through the Secretary of State's office or a local currency exchange.

If you believe a toll charge is incorrect—for example, if you were charged twice or the amount doesn't match the route you took—contact the Illinois Tollway customer service at 1-800-UC-IPASS. They can review the transaction and issue a credit if warranted.

I-PASS discounts and how rates are calculated

I-PASS users receive a discount on every toll. The exact amount depends on the toll plaza, time of day, and vehicle type. Passenger cars, motorcycles, and RVs have different rates. Some tolls are higher during rush hours (typically 6 a.m. to 10 a.m. and 3 p.m. to 7 p.m. on weekdays).

You can view current rates for any toll plaza on Tollway.com. The site has a toll calculator where you enter your vehicle type and starting and ending points, and it shows you the I-PASS rate and the cash rate side by side. Over time, I-PASS savings add up significantly if you use the tollway regularly.

I-PASS accounts also offer a low-balance alert. You can set it to notify you by email or text when your balance drops below a certain amount, so you don't run out of funds mid-trip.

What happens if your I-PASS transponder stops working

If your transponder malfunctions or stops reading, tolls will be photographed and billed to your address at the cash rate plus the $1 administrative fee. You'll receive a bill in the mail just as if you didn't have I-PASS.

If you suspect your transponder isn't working, contact I-PASS customer service at 1-800-UC-IPASS. They can test your account and send a replacement transponder at no charge if the original is defective. Replacement transponders typically arrive within a week. In the meantime, you can pay tolls by mail or online when you receive bills.

Transponders can fail due to age, heat damage, or physical damage. If you move to a different state or no longer need I-PASS, you can close your account online or by phone. Any remaining balance is refunded to your original payment method.

I-PASS for commercial vehicles and multiple vehicles

If you own multiple vehicles, you can add more than one transponder to a single I-PASS account. Each transponder is linked to a specific vehicle's license plate. You manage all of them through one online account and one prepaid balance.

Commercial vehicles, including trucks and buses, have separate I-PASS programs with different rates. The Illinois Tollway offers I-PASS Commercial for businesses that operate commercial vehicles regularly. Rates are based on vehicle weight and axle count. You can learn more about commercial I-PASS on Tollway.com or by calling 1-800-UC-IPASS.

Frequently Asked Questions

Can I use my I-PASS in other states?

I-PASS works on the Illinois Tollway only. Other states have their own toll systems (E-ZPass in the Northeast, FasTrak in California, etc.). If you travel to other states with tolls, you'll need to pay cash or set up an account with that state's system. Some states allow you to pay by mail using your license plate.

What if I get a toll bill but I don't think I drove on the tollway?

Contact the Illinois Tollway at 1-800-UC-IPASS with your bill number and the date of the charge. They can review the photo and transaction details. If the charge was made in error or to the wrong vehicle, they'll issue a credit. Keep your bill handy when you call.

Do I have to use I-PASS, or can I always pay cash?

You don't have to use I-PASS, but cash payment is becoming less common at toll plazas. Most tolls now use camera-based billing, which means you'll receive a bill in the mail regardless. I-PASS is cheaper and faster, but paying by mail is still an option if you prefer not to use a transponder.

What if I move out of Illinois but still owe tolls?

You must still pay the tolls owed. The Illinois Secretary of State can place a hold on your vehicle registration even if you've moved. If you later try to register a vehicle in Illinois, the hold will prevent it. Pay the toll debt through Tollway.com or by mail to clear the hold before registering a vehicle in the state.

Can I get a refund if I prepay too much on my I-PASS account?

Yes. If your account balance is positive when you close it, the remaining balance is refunded to your original payment method within 7 to 10 business days. You can close your account online at Tollway.com or by calling 1-800-UC-IPASS.