Chicago tolls can be paid three ways: through I-PASS (the electronic account system), at toll plazas with cash or card, or through Tollway invoices sent by mail

Chicago's toll system is run by the Illinois Tollway, which operates the Chicago Skyway, the Tri-State Tollway (I-94 and I-90), and the Reagan Expressway (I-290). If you drive these routes regularly, you'll encounter tolls. The fastest and cheapest way to pay is I-PASS, an electronic account that charges your card automatically when you pass through a toll point. If you don't have I-PASS, you can pay cash or card at some toll plazas, or you'll receive an invoice in the mail weeks later with a higher rate.

The key difference: I-PASS users pay a discounted rate (roughly 50% less than the cash rate), while drivers without I-PASS pay the full rate at the booth or receive a bill afterward. Most people who use Chicago tolls more than a few times per year find I-PASS worth setting up because the savings add up quickly.

Key Takeaways

  • I-PASS is an electronic account you load with money; tolls are deducted automatically as you drive, and you pay a lower rate than cash customers.
  • You can set up I-PASS online at illinoistollway.com or by phone, and it takes about 5 to 10 business days to receive your transponder in the mail.
  • If you don't have I-PASS, you can pay cash or card at some toll plazas, but you'll pay roughly double the I-PASS rate.
  • Drivers without I-PASS who don't pay at the booth will receive a toll invoice by mail, usually 2 to 4 weeks after you drive, with the full cash rate plus a processing fee.
  • You can check your I-PASS balance, add money, and view your toll history anytime through your online account.

Setting up an I-PASS account

To open an I-PASS account, go to illinoistollway.com and click "Open an Account" or call 1-800-UC-IPASS (1-800-824-7277). You'll need a valid driver's license, a current mailing address, and a payment method (debit or credit card). The online process takes about 10 minutes. You'll choose how much money to load onto your account—most people start with $25 to $100 depending on how often they drive.

After you submit your information, the Illinois Tollway mails you a transponder (the small device that attaches to your windshield). This usually arrives within 5 to 10 business days. Once it arrives, you set up it through your online account or by phone, and it's ready to use when ready. Your account balance will decrease each time you pass through a toll point. When your balance drops below a certain threshold (usually $10), you can set up automatic replenishment so money is added to your account without you having to remember.

Paying cash or card at toll plazas

Not all toll plazas accept cash anymore. The Illinois Tollway has converted many plazas to all-electronic collection, meaning there's no booth attendant and no way to pay by hand. Before you drive, check which plazas still have cash lanes by visiting illinoistollway.com and searching for "toll plaza locations." The plazas that do accept cash will have clearly marked lanes.

At a cash plaza, you'll slow down, toss coins or bills into a basket, or hand cash to an attendant if one is present. Some plazas accept card payments at the booth. The cash rate is significantly higher than the I-PASS rate—for example, a trip that costs $1.50 with I-PASS might cost $3.00 or more with cash. If you're a one-time visitor to Chicago, paying cash at the booth is straightforward. If you drive Chicago tolls regularly, the cost difference makes I-PASS worth the setup time.

Receiving and paying toll invoices by mail

If you drive through a toll plaza without I-PASS and don't pay cash, the Illinois Tollway photographs your license plate and sends you an invoice by mail. This invoice arrives 2 to 4 weeks after you drive and includes the toll amount plus a processing fee (usually $2 to $5 per toll). The total is higher than what you would have paid with I-PASS or at the booth with cash.

When your invoice arrives, you can pay online at illinoistollway.com, by phone at 1-800-UC-IPASS, by mail, or in person at a payment location. Payment is due within 30 days. If you don't pay, the Tollway can place a hold on your vehicle registration renewal or report the debt to a collection agency. If you receive an invoice for a toll you believe you paid, you can dispute it through the website or by calling the customer service number on the invoice.

Understanding I-PASS rates and discounts

I-PASS rates vary depending on the road and the time of day. The Chicago Skyway and Reagan Expressway have fixed rates, while the Tri-State Tollway uses congestion pricing—tolls are higher during rush hours and lower during off-peak times. You can see the current rates for each road on illinoistollway.com. The system automatically charges you the correct rate based on when and where you drive.

I-PASS users always pay less than cash customers. For example, if the cash rate is $3.00, the I-PASS rate might be $1.50. This discount applies every single toll, so the savings compound quickly if you drive Chicago tolls frequently. There are no monthly fees for maintaining an I-PASS account, only the tolls you actually use.

Managing your I-PASS account online

Once your account is open, you can log in to illinoistollway.com anytime to check your balance, view your toll history, add money, update your payment method, or change your mailing address. The website shows you every toll you've paid, the date, the location, and the amount. This is useful if you need to track expenses for work or if you want to dispute a charge.

If your transponder is lost, stolen, or damaged, you can order a replacement through your account for a small fee (usually $10 to $15). If you're moving out of Illinois or no longer need I-PASS, you can close your account and request a refund of any remaining balance. The refund is mailed to you within 2 to 3 weeks.

What happens if your I-PASS balance runs low

When your account balance drops below $10, the Illinois Tollway sends you a notice by mail or email (if you've provided an email address). You can add money to your account through the website, by phone, or by mail. The minimum replenishment is usually $25. If you set up automatic replenishment when you open your account, money is added automatically, and you don't have to worry about running out.

If your balance reaches zero and you drive through a toll, your account goes negative. The Tollway will send you an invoice for the negative balance plus a processing fee. To avoid this, set up automatic replenishment or check your balance before long trips. You can also add money anytime through your account, even if your balance is still positive.

Frequently Asked Questions

Can I use someone else's I-PASS in my car?

No. I-PASS transponders are registered to a specific vehicle and account holder. If you use someone else's transponder, the toll is charged to their account, and the Tollway can pursue collection against them. Each driver should have their own I-PASS account registered to their vehicle.

What if I'm renting a car in Chicago—do I need I-PASS?

No. Rental car companies handle tolls for their vehicles. When you rent, ask the rental company whether tolls are included in your rental agreement or if you'll be billed separately. Most rental companies charge a processing fee on top of the actual toll amount if you incur tolls during your rental.

How long does it take to get my I-PASS transponder?

The transponder usually arrives within 5 to 10 business days of opening your account. Once it arrives, you set up it through your online account or by phone, and it works when ready. If you need a transponder faster, some Illinois Tollway customer service centers offer same-day pickup, though locations are limited.

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

Yes. If your account has a positive balance when you close it, the Illinois Tollway refunds the remaining money to your original payment method within 2 to 3 weeks. You can also request a refund while your account is still active if you've added too much money.

What if I don't pay a toll invoice?

The Illinois Tollway can place a hold on your vehicle registration renewal, report the debt to a collection agency, or pursue legal action. The longer you wait, the more fees accumulate. If you receive an invoice you believe is incorrect, dispute it as soon as possible through the website or by phone.