What an ignition interlock costs in Illinois
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Illinois publishes its own figures rather than leaving it all to vendors: up to $85 to fit the device and up to $110 a month while it stays on the car. Removal is billed separately at the end of the term.
Three charges make up the bill, not one: fitting the device, keeping it on the car, and taking it out at the end. Over a full term the monthly fee is the bulk of it, which is why a cheap installation on a long requirement costs more than a dearer one on a short.
What Illinois lets a provider charge
| Charge | Amount | What it covers |
|---|---|---|
| Installation | $85 | average across vendors, paid to the provider |
| Monthly | $110 | $80 device rental to the provider plus a $30 state monitoring fee |
| Removal | $150 | de-install labor on the filed LifeSafer schedule |
State guidance figure · About the Breath Alcohol Ignition Interlock Device — Illinois Secretary of State · checked 2026-08-23
The fees nobody quotes you over the phone
These are charged on top of the three above, and they are where a cheap-looking Illinois quote turns expensive.
| Fee | Amount |
|---|---|
| Violation reset | $75 |
| Missed appointment | $55 |
| Early contract termination | $250 |
| Vehicle swap | $275 |
| Lockout override code | $50 |
| Install labor on a 2012-or-newer vehicle | up to $300 |
- The state monitoring fee is paid up front and is non-refundable.
- Penalty fees come from the vendor schedule filed with the Secretary of State.
What decides the total in Illinois
The monthly fee matters less than how long you pay it, and that is set by the requirement rather than the provider. In Illinois a first offense carries for the length of the statutory summary suspension; the Secretary of State downloads the device data every 30 to 60 days and asks you to explain any violation it finds The programme is run by Illinois Secretary of State, BAIID Division, which is also who decides whether a recorded event extends it.
That is the part worth budgeting for: events add months, and months are what the bill is made of. What counts as a violation → · All Illinois rules and centers →
Who operates in Illinois, and why it changes the price
7 approved networks run in Illinois: Intoxalock (251), Smart Start (139), Low Cost Interlock (64), LifeSafer (58), RoadGuard Interlock (41), ADS Interlock (31), Alcolock USA (10). Inside a state that publishes a figure the brand barely moves the bill, so choose on the drive to calibration rather than the quote.
Where it is fitted in Illinois
465 certified points in our index. The busiest cities:
Cost questions in Illinois
How much does an ignition interlock cost in Illinois?
Illinois publishes its own figures rather than leaving it all to vendors: up to $85 to fit the device and up to $110 a month while it stays on the car. Removal is billed separately at the end of the term.
Does Illinois cap what a provider can charge?
Not as a hard ceiling. Illinois publishes figures, but they are guidance rather than a cap, so the number tells you what is normal rather than what is forbidden. Get a second quote if yours sits well above it.
What else does Illinois charge on top of the device?
Beyond what the provider bills, the state has its own charges: Violation reset $75; Missed appointment $55; Early contract termination $250; Vehicle swap $275; Lockout override code $50; Install labor on a 2012-or-newer vehicle up to $300. These are the lines people are surprised by, because the vendor quote does not include them.
Where can I have an interlock fitted in Illinois?
We index 465 certified installation points across 228 Illinois cities. Book with a provider the state approves rather than the nearest pin on the map: time on an unapproved device does not count toward the term.