What an ignition interlock costs in Maryland
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Maryland publishes its own figures rather than leaving it all to vendors: $70 to $150 to fit the device and $70 to $100 a month while it stays on the car. Removal is billed by the provider 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 Maryland lets a provider charge
| Charge | Amount | What it covers |
|---|---|---|
| Installation | $70–$150 | range across approved providers; many discount the initial install and account set-up |
| Monthly | $70–$100 | monitoring, with calibration every 30 days |
| Removal | Not published | not published separately by the MVA |
State guidance figure · Ignition Interlock Program Report — Maryland MVA · 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 Maryland quote turns expensive.
| Fee | Amount |
|---|---|
| Program enrollment fee | $47 (waivable on medical or food assistance) |
- Providers must fit a device within 10 days of a request and run a 24-hour emergency line.
- Providers must offer 50% off rental rates to drivers on assistance.
What decides the total in Maryland
The monthly fee matters less than how long you pay it, and that is set by the requirement rather than the provider. In Maryland a first offense carries set on referral by the MVA, a court or an administrative law judge; a repeat offender within five years faces a year of suspension or a year in the program, then a further restricted year The programme is run by Maryland Motor Vehicle Administration, 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 Maryland rules and centers →
If you cannot pay for it in Maryland
Maryland is one of the states that wrote an answer into its own rules rather than leaving it to the provider:
- Program enrollment fee — $47 (waivable on medical or food assistance)
None of it is automatic. You apply through Maryland Motor Vehicle Administration, and you apply before the device goes in rather than after.
Who operates in Maryland, and why it changes the price
7 approved networks run in Maryland: LifeSafer (131), Intoxalock (130), Smart Start (80), Low Cost Interlock (68), RoadGuard Interlock (43), Guardian Interlock (33), ADS Interlock (13). 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 Maryland
336 certified points in our index. The busiest cities:
Cost questions in Maryland
How much does an ignition interlock cost in Maryland?
Maryland publishes its own figures rather than leaving it all to vendors: $70 to $150 to fit the device and $70 to $100 a month while it stays on the car. Removal is billed by the provider at the end of the term.
Does Maryland cap what a provider can charge?
Not as a hard ceiling. Maryland 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 Maryland charge on top of the device?
Beyond what the provider bills, the state has its own charges: Program enrollment fee $47 (waivable on medical or food assistance). These are the lines people are surprised by, because the vendor quote does not include them.
Where can I have an interlock fitted in Maryland?
We index 336 certified installation points across 128 Maryland 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.