What an ignition interlock costs in Delaware
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Delaware publishes its own figures rather than leaving it all to vendors: up to $100 to fit the device and up to $75 a month while it stays on the car, and the monthly figure is a ceiling an approved provider may not exceed. 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 Delaware lets a provider charge
| Charge | Maximum allowed | What it covers |
|---|---|---|
| Installation | $100 | includes removal at the end of the program, and $30 of it is rebated back to you when the device comes out |
| Monthly | $75 | monitoring and calibration |
| Removal | No charge | covered by the installation fee |
State-capped maximum — a provider may not charge more · DE Admin. Code 2223 — Ignition Interlock Device Installation, Removal and Monthly Fees · effective 2022-03-11 · 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 Delaware quote turns expensive.
| Fee | Amount |
|---|---|
| Maximum initial payment (install + first month) | $175 |
What decides the total in Delaware
The monthly fee matters less than how long you pay it, and that is set by the requirement rather than the provider. In Delaware a first offense carries set by the program you enter: Delaware runs a First Offense Election diversion with the device and a separate voluntary program, and the license is not issued until you meet the minimum qualifications The programme is run by Delaware Division of Motor Vehicles, IID Unit, 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 Delaware rules and centers →
Who operates in Delaware, and why it changes the price
3 approved networks run in Delaware: Intoxalock (3), Smart Start (3), LifeSafer (2). 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 Delaware
8 certified points in our index. The busiest cities:
Cost questions in Delaware
How much does an ignition interlock cost in Delaware?
Delaware publishes its own figures rather than leaving it all to vendors: up to $100 to fit the device and up to $75 a month while it stays on the car, and the monthly figure is a ceiling an approved provider may not exceed. Removal is billed separately at the end of the term.
Does Delaware cap what a provider can charge?
Yes. Delaware sets a ceiling by regulation, and an approved provider may not charge above it whatever the quote says. That makes the published figure more useful than any phone estimate — it is the maximum, not an average. The document behind it is linked below with the date we checked it.
What else does Delaware charge on top of the device?
Beyond what the provider bills, the state has its own charges: Maximum initial payment (install + first month) $175. These are the lines people are surprised by, because the vendor quote does not include them.
Where can I have an interlock fitted in Delaware?
We index 8 certified installation points across 6 Delaware 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.