Chicago tolls work through I-PASS, a prepaid account system, or pay-per-use cash lanes on the Illinois Tollway

Chicago tolls are collected on the Illinois Tollway system, which includes the Tri-State Tollway (I-94/I-294/I-80), the Reagan Expressway (I-90), and the Veterans Memorial Tollway (I-355). You have two main payment paths: open an I-PASS account for automatic deductions at a lower rate, or pay cash at toll plazas when you encounter them. I-PASS is the faster option and costs less per toll — the state charges a discount for account holders and charges full price for cash payers.

If you drive Chicago tolls regularly, I-PASS saves money and time. If you cross tolls infrequently, you can pay cash at the booth, though you will pay a higher per-toll rate and wait in line. Unpaid tolls generate notices, and repeated non-payment can result in vehicle registration holds and collection action.

Key Takeaways

  • I-PASS accounts charge a lower per-toll rate than cash payment and let you drive through toll plazas without stopping.
  • You can open an I-PASS account online, by phone at 1-800-UC-IPASS, or at a customer service center; it takes 3 to 5 business days to set up.
  • Cash payment at toll booths costs more per toll and requires you to stop; some plazas have all-electronic lanes that photograph your license plate and bill you later at the cash rate.
  • Unpaid tolls generate violation notices, and if you ignore them, the state can place a hold on your vehicle registration renewal.
  • If you receive a toll violation notice, you can pay online, by mail, or by phone within the important date stated on the notice.

Opening an I-PASS account and loading funds

To open an I-PASS account, visit ipass.illinois.gov, call 1-800-UC-IPASS (1-800-824-4727), or visit a customer service center in person. Online is fastest. You will need a valid driver's license or state ID, a current vehicle registration, and a payment method (debit card, credit card, or bank account). The account itself is free to open.

When you set up the account, you choose a prepaid balance — typically $25, $50, or $100 to start. You also choose whether to set up automatic replenishment, which adds funds to your account when the balance drops below a threshold you set. Most drivers choose automatic replenishment to avoid running out of funds mid-trip. The account takes 3 to 5 business days to set up after you complete the online form or phone process.

Once your account is active, you receive a transponder — a small electronic device that mounts on your windshield. This transponder communicates with toll plaza sensors and deducts the toll from your account balance as you pass through. You can register multiple vehicles to one I-PASS account if you want, though each vehicle needs its own transponder.

I-PASS discount rates versus cash payment

I-PASS holders pay a lower per-toll rate than cash payers. The exact discount varies by toll plaza and vehicle type, but I-PASS rates are typically 30 to 50 percent lower than cash rates. For example, a toll that costs $2.50 for a cash payer might cost $1.50 for an I-PASS holder. If you cross tolls multiple times per week, the savings add up quickly.

Cash payment is available at toll booths staffed during peak hours, though the number of cash lanes has shrunk over the years. Some toll plazas now operate all-electronic, meaning there is no booth attendant — your license plate is photographed and you receive a bill in the mail at the cash rate. This bill arrives weeks later and must be paid by the important date on the notice, or it becomes a violation.

What happens if you do not pay a toll

If you pass through a toll plaza without paying — whether because you have no I-PASS, no cash, or a transponder malfunction — the toll authority photographs your license plate and sends a violation notice to the vehicle's registered owner. This notice arrives by mail and includes the toll amount, a violation fee (which varies), and a important date to pay, usually 30 days from the notice date.

If you pay within the important date, the matter closes. If you ignore the notice, a second notice may follow with an increased penalty. If you continue to ignore notices, the Illinois Secretary of State can place a registration hold on your vehicle, meaning you cannot renew your registration until the tolls and penalties are paid. This hold appears when you attempt to renew online or at a Secretary of State office.

Repeated unpaid tolls can also result in collection action, where the toll authority or a collection agency pursues the debt. In rare cases, this can affect your credit report. The fastest way to resolve an unpaid toll is to pay the amount shown on the notice as soon as you receive it.

Paying a toll violation notice

When you receive a violation notice in the mail, it will include three payment methods: online at the toll authority's website, by phone, or by mail. Online payment is fastest and typically processes within one business day. You will need the violation notice number and the amount due.

If you believe the toll was charged in error — for example, your I-PASS transponder malfunctioned or you paid in cash but were still billed — you can dispute the violation. The notice will include instructions for filing a dispute, usually requiring you to submit documentation (such as a receipt or transponder service record) within a set timeframe. Disputes are reviewed by the toll authority, and you will receive a response by mail.

I-PASS account management and transponder issues

You can check your I-PASS balance and transaction history anytime at ipass.illinois.gov or by calling 1-800-UC-IPASS. You can also update your payment method, change your automatic replenishment settings, or add or remove vehicles from your account online.

If your transponder stops working — for example, if it is damaged or the battery dies — you can request a replacement through your online account or by phone. Replacements typically arrive within 5 to 7 business days. If your transponder fails and you pass through a toll plaza before the replacement arrives, you will receive a violation notice, but you can dispute it by providing proof of the malfunction and the replacement request.

If you sell or trade in your vehicle, remove the transponder from that vehicle's registration in your I-PASS account to prevent tolls from being charged to the wrong vehicle. If you move out of Illinois, you can close your account and request a refund of any remaining balance.

Toll rates and vehicle classifications

Toll rates depend on your vehicle type and the specific toll plaza. The Illinois Tollway classifies vehicles into categories: passenger cars, motorcycles, and commercial trucks. Passenger cars pay the lowest rate, motorcycles pay slightly less than cars, and commercial trucks pay higher rates based on the number of axles. When you open an I-PASS account, you specify your vehicle type, and tolls are charged accordingly.

If you misclassify your vehicle — for example, registering a truck as a car to pay a lower rate — you can receive a violation notice for toll evasion. Always register your vehicle in the correct category.

Frequently Asked Questions

Can I use I-PASS on tolls outside Illinois?

I-PASS works only on the Illinois Tollway system. If you travel to other states with toll roads, such as Indiana or Ohio, you will need to pay cash or use that state's toll system. Some states have reciprocal agreements with I-PASS, but you should check the specific toll authority's website before traveling.

What if I have an I-PASS account but my transponder is not in my car?

If you drive through a toll plaza without your transponder mounted, the toll authority will not recognize your account and will photograph your license plate. You will receive a violation notice at the cash rate plus a violation fee. To avoid this, always mount your transponder on the windshield before driving on tolled roads.

How long does it take to get a refund if I close my I-PASS account?

Refunds of remaining account balances are processed within 4 to 6 weeks after you close your account. You can request closure online or by phone. The refund is issued to the original payment method you used to fund the account.

Can I transfer my I-PASS account to someone else?

No, I-PASS accounts are tied to the registered vehicle owner. If you sell your vehicle, the new owner must open their own I-PASS account. You should remove the vehicle from your account to prevent tolls from being charged to you after the sale.

What if I receive a toll violation notice for a toll I paid with cash?

This can happen if the toll booth attendant did not process your cash payment correctly or if you passed through an all-electronic plaza that photographed your plate. Contact the toll authority with your receipt or proof of payment, and they will investigate. If your payment is confirmed, the violation will be dismissed.