Illinois toll payments go to the Illinois Tollway, a state agency that operates and maintains toll roads across the Chicago region and northern Illinois

When you pay a toll on an Illinois highway, your money funds the operation, maintenance, and improvement of that specific road system. The Illinois Tollway is an independent state agency — not part of the Illinois Department of Transportation — and it keeps toll revenue separate from general state funds. This means your toll payment does not go into a general state budget; it pays for the road you are using.

The Illinois Tollway operates seven toll roads: the Tri-State Tollway (I-94/I-294/I-80), the Chicago Skyway, the Reagan Memorial Tollway (I-88), the Veterans Memorial Tollway (I-355), the Jane Addams Memorial Tollway (I-90), the Illinois Route 390, and the Elgin-O'Hare Expressway (I-190). Each toll plaza or electronic reader you pass charges a fee based on your vehicle type and the distance traveled.

Key Takeaways

  • Illinois toll payments go directly to the Illinois Tollway, a state agency separate from the Department of Transportation, and are used only for that road system's operations and maintenance.
  • You can pay tolls three ways: cash at toll plazas, I-PASS (a prepaid account), or Tollway bill-by-plate, which charges your registered vehicle owner's address.
  • I-PASS users receive a discount on every toll; drivers without I-PASS or a valid payment method receive a bill in the mail with a higher rate plus a processing fee.
  • The Illinois Tollway publishes an annual financial report showing how toll revenue is spent on salaries, maintenance, debt service, and capital improvements.
  • If you receive a toll bill you believe is incorrect, you can dispute it through the Tollway's customer service within a set timeframe.

The three ways to pay Illinois tolls

I-PASS is a prepaid account linked to a small electronic tag mounted on your windshield. When you pass through a toll plaza, the reader detects your tag and deducts the toll from your account balance. I-PASS users pay a discounted rate — typically 10 to 30 percent less than the cash rate, depending on the road and vehicle type. You can set up automatic replenishment so your account refills when the balance drops below a threshold you choose.

Cash payment at toll plazas is still available on most Illinois Tollway roads, though some plazas have moved to cashless-only lanes. Cash tolls cost more than I-PASS rates. You hand money to an attendant or use a coin machine, and you receive a receipt.

Tollway bill-by-plate is an automated system that photographs your license plate as you pass through a toll plaza. If you do not have I-PASS and do not pay cash, the Tollway looks up the vehicle's registered owner and mails a bill. This bill includes the toll amount plus a processing fee — currently $2.50 per transaction. If you do not pay the bill within a set timeframe, late fees and additional charges accumulate.

Where toll revenue actually goes

The Illinois Tollway publishes an annual financial report that breaks down how toll revenue is spent. The largest categories are debt service (payments on bonds issued to build and improve roads), employee salaries and benefits, maintenance and operations, and capital improvements. In recent years, roughly 30 to 40 percent of revenue has gone to debt service, 20 to 30 percent to operations and maintenance, and 15 to 25 percent to employee costs.

The Tollway also sets aside revenue for future projects. When the agency plans a major expansion or rehabilitation, it often issues bonds backed by expected toll revenue. This means tolls you pay today may fund construction that will not begin for several years. The Tollway's board of directors approves the annual budget and toll rates, and the agency is required to hold public hearings before raising tolls.

Unlike general state taxes, toll revenue cannot be redirected to other state agencies or programs. It is legally restricted to the Illinois Tollway system. This is why toll roads exist as separate entities — they are meant to be self-funding.

How toll rates are set and when they change

The Illinois Tollway board sets toll rates based on projected operating costs, debt obligations, and planned capital improvements. Rates vary by vehicle type (passenger car, motorcycle, truck) and by distance traveled on some roads. The Tollway typically announces rate changes several months in advance and holds public hearings before implementing them.

Toll increases have occurred roughly every two to three years in recent decades, though the timing and amount vary. The Tollway publishes its rate schedule on its website, and you can see what you will pay for a specific trip using the toll calculator tool. I-PASS rates are always lower than cash rates for the same trip.

What happens if you do not pay a toll

If you pass through a toll plaza without paying and do not have I-PASS, the Tollway's bill-by-plate system will photograph your license plate. A bill will be mailed to the address on file with the Secretary of State for that vehicle. The bill includes the toll amount plus a $2.50 processing fee.

If you do not pay the bill within 30 days, a late fee is added. If you do not pay within 60 days, the amount may be referred to a collection agency, and the Tollway may report the debt to credit bureaus. Unpaid toll bills can also result in vehicle registration holds — you may not be able to renew your registration until the debt is settled.

If you receive a bill you believe is incorrect — for example, you believe you paid cash or your I-PASS should have been read — you can contact the Tollway's customer service to dispute it. You will need to provide details about when and where you traveled, and the Tollway will investigate.

I-PASS discounts and how they work

I-PASS discounts range from 10 to 30 percent depending on the road and vehicle class. A passenger car on the Tri-State Tollway, for example, pays a lower per-mile rate with I-PASS than a driver paying cash for the same trip. The discount is automatic — you do not need to do anything to receive it. Every time your tag is read, the discounted rate is deducted from your account.

I-PASS accounts can be set up online, by phone, or at a customer service center. You choose a payment method (credit card, debit card, or bank account) and set a replenishment threshold. When your balance falls below that amount, the Tollway automatically charges your payment method to refill the account. Most people set the threshold at $20 to $40, which means they are charged every few months depending on how often they use the toll roads.

If you move out of Illinois or no longer use the toll roads, you can close your I-PASS account and request a refund of any remaining balance. The refund is issued to the payment method on file.

Disputing a toll bill or charge

If you receive a bill-by-plate bill and believe it is wrong, contact the Illinois Tollway customer service center by phone or through their website. You will need the bill number and details about the trip in question. Common disputes include claims that you paid cash, that your I-PASS tag should have been read, or that you did not make the trip at all.

The Tollway will investigate your dispute by reviewing toll plaza records, video footage if available, and your account history. If they determine the charge was incorrect, they will issue a credit to your account or a refund. If they determine the charge was correct, they will explain why and you can choose to pay or pursue further dispute options.

The timeframe for disputing a bill varies, but generally you should contact the Tollway within 30 to 60 days of receiving the bill. Waiting longer makes it harder to investigate and may result in late fees that are harder to reverse.

Frequently Asked Questions

Can I use my I-PASS from another state on Illinois toll roads?

No. I-PASS is specific to the Illinois Tollway system. If you have a transponder from another state's toll system, it will not work on Illinois roads. You will need to set up an Illinois I-PASS account. Some states have reciprocal agreements that allow their transponders to work on other systems, but Illinois does not currently participate in these programs.

What if I get a bill-by-plate charge but I have I-PASS?

This usually means your I-PASS tag was not read at that toll plaza. This can happen if the tag is damaged, dirty, or mounted incorrectly. Contact the Tollway with your bill number and I-PASS account number, and they will investigate. If your tag failed to read, they will credit the bill-by-plate charge and deduct the I-PASS rate from your account instead.

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

Cash payment is still available at most Illinois Tollway plazas, though some have moved to cashless-only lanes during certain hours. You are not required to use I-PASS, but cash tolls cost significantly more. If you do not pay cash and do not have I-PASS, you will receive a bill-by-plate bill with a higher rate plus a processing fee.

How do I know if my vehicle registration will be held for unpaid tolls?

The Illinois Secretary of State coordinates with the Tollway to flag vehicle registrations with outstanding toll debt. When you try to renew your registration, the system will alert you to the unpaid amount. You must pay the toll bill before you can complete the registration renewal. Contact the Tollway if you are unsure whether you have outstanding debt.

Can I set up I-PASS for a commercial truck or fleet?

Yes. The Illinois Tollway offers commercial I-PASS accounts for trucks and fleet vehicles. These accounts have different rate structures than passenger vehicles and may include additional features like consolidated billing for multiple vehicles. Contact the Tollway's commercial customer service line for details on setting up a fleet account.