The Illinois Tollway Board voted unanimously in August 2026 to approve the largest toll rate hike in state history, funding a $26.5 billion capital program through 2042. If you drive I-90, I-294, I-88, or any other Illinois tollway regularly — or you’re visiting from out of state — here’s exactly what’s changing and how to avoid overpaying.
What’s Actually Changing
The most common toll in the system — currently 75 cents — rises to $1.20, a 60% jump. The exact percentage increase varies by plaza, ranging from 50% to 66% depending on the toll. For commercial vehicles, rates rise about 30% on average. This is the first rate increase for passenger vehicles in nearly 15 years.
The bigger long-term change: automatic inflation indexing. Starting in 2029, tolls will increase automatically every two years based on the Consumer Price Index, capped at 8% per adjustment — without requiring another public vote or board approval. This is a first for the Illinois Tollway and means rate increases become a predictable, recurring event rather than a rare political battle.
Chicago Skyway is separate and already up. The Skyway (the toll bridge to Indiana) is privately operated, not part of the Illinois Tollway system, and already increased 30 cents for 2026 — a two-axle vehicle now pays $8.10. Skyway tolls have risen more than 200% since privatization in 2005, well above the general inflation rate.
Even After the Hike, Rates Remain Below National Average
The Tollway’s own numbers: after the increase, an I-PASS user pays an average of 11 cents per mile, compared to a 16-cent-per-mile national average. That’s still one of the lower per-mile rates of any major toll system in the country — the increase closes the gap but doesn’t erase Illinois’s relative advantage.
I-PASS vs. E-ZPass: How Reciprocity Actually Works
I-PASS is Illinois’s own transponder program, but it works far beyond Illinois — and the reverse is also true, which is the detail most out-of-state visitors don’t realize.
- I-PASS works anywhere E-ZPass is accepted — roughly 20 states from Maine to North Carolina and west to Illinois — with one caveat: airport parking lots and other non-roadway facilities are excluded.
- E-ZPass transponders from any member state work automatically on Illinois tollways at the same 50% discount I-PASS holders get. If you’re driving into Chicago from Ohio, Indiana, Pennsylvania, or any other E-ZPass state, your existing transponder just works — no new account needed.
- No monthly fee for I-PASS in Illinois — unlike some other E-ZPass states that charge $1–$1.50/month for account maintenance, Illinois doesn’t.
No Transponder? Pay By Plate Explained
Every Illinois tollway has been fully cashless since 2020 — no cash lanes, no coin baskets. If you don’t have I-PASS or E-ZPass, cameras photograph your plate and you owe the toll at double the transponder rate.
Pay By Plate gives you 14 days from your travel date to log in, enter your plate number and travel dates, and pay online — completely avoiding fines and fees. If you’ve already traveled, be sure to backdate your entry to your actual travel date. This is the single most important thing for visitors and occasional drivers to know.
What Happens If You Miss the Window
Illinois passed consumer protections (HB3705) in recent years that cap how bad an unpaid toll can get — worth knowing if you’re worried about an old ticket snowballing.
| Timeline | What Happens |
|---|---|
| Within 14 days | Pay By Plate online — no fines, no fees |
| 14+ days, unpaid | $3 invoice fee, then escalates to a $20 violation notice |
| 30 days after violation | Additional $50 fine if still unpaid |
| Under HB3705 protections | Initial penalty capped at the original toll amount; second 14-day window to pay without further penalty; max 2 total fees per unpaid toll |
| Registered owner ignores it entirely | Illinois Secretary of State can block vehicle registration renewal |
Transponder Placement — The Detail That Actually Costs People Money
A surprising number of “unpaid toll” notices come down to a transponder that wasn’t read correctly, not a driver who skipped payment. Mount your I-PASS or E-ZPass transponder on the interior windshield, centered, unobstructed by tint or stickers, following the placement instructions in the box. A transponder in a bag on the passenger seat, or mounted behind heavily tinted glass, frequently fails to register — and you’ll get charged the Pay By Plate rate (double) even though you technically have a working transponder.
Suburban Commuters: Where This Hits Hardest
For daily commuters running I-90, I-294, or I-88 twice a day, the 45-cent-per-toll increase compounds fast. A commuter crossing two toll plazas each way, five days a week, sees their annual toll cost rise by roughly $234 a year at the new rates — before the 2029 inflation adjustments even kick in. Locking in I-PASS (versus paying cash or Pay By Plate rates) remains the single biggest lever commuters have to control that cost, since it holds the 50% discount regardless of how base rates move.
Quick Reference: Illinois Tollway Rates & I-PASS
- New rate effective January 1, 2027 — 45¢ more per toll for passenger vehicles
- Inflation indexing starts 2029 — automatic increases every 2 years, capped at 8%
- I-PASS discount 50% off cash/Pay By Plate rate, no Illinois monthly fee
- Out-of-state E-ZPass Works automatically on Illinois tollways at the I-PASS rate
- No transponder Pay By Plate within 14 days of travel — avoids all fines
- Missed the window $3 invoice fee → $20 violation → $50 additional if still unpaid at 30 days
- Transponder placement Interior windshield, centered, unobstructed — misreads cost you the double rate
- Chicago Skyway Separate, private toll road — already increased for 2026, not part of this hike
The rate hike is real and the automatic inflation indexing is the bigger long-term story — but Illinois tollways remain below the national per-mile average even after the increase. Get I-PASS, mount it correctly, and use Pay By Plate within 14 days if you’re visiting without a transponder. That combination avoids every fine this system can throw at you.