What an ignition interlock costs in New Hampshire
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New Hampshire does not publish a price, so the honest answer is the national one: NHTSA puts installation at $70 to $90 and monitoring at about $70 a month, roughly $3 to $4 a day. A quote far above that is the provider's, not the state's.
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.
New Hampshire publishes no figure, so here is the national one
NHTSA puts installation at $70–$90 and monitoring at about $70 a month, roughly $3–$4 a day. Only 14 jurisdictions publish their own numbers or cap what a provider may charge; New Hampshire is not among them, so a quote well above the national range is the provider’s decision rather than the state’s.
What decides the total in New Hampshire
The monthly fee matters less than how long you pay it, and that is set by the requirement rather than the provider. In New Hampshire a first offense carries ordered by a New Hampshire court or by the Commissioner of Safety under RSA 265-A:36; you may only drive vehicles fitted with a NH-approved device The programme is run by NH Division of Motor Vehicles, or the court, 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 New Hampshire rules and centers →
Who operates in New Hampshire, and why it changes the price
4 approved networks run in New Hampshire: Intoxalock (66), RoadGuard Interlock (9), Smart Start (5), LifeSafer (4). Nothing here caps what any of them may charge, so the quote is the price and two quotes are worth the phone calls.
Where it is fitted in New Hampshire
75 certified points in our index. The busiest cities:
Cost questions in New Hampshire
How much does an ignition interlock cost in New Hampshire?
New Hampshire does not publish a price, so the honest answer is the national one: NHTSA puts installation at $70 to $90 and monitoring at about $70 a month, roughly $3 to $4 a day. A quote far above that is the provider's, not the state's.
Does New Hampshire cap what a provider can charge?
No. New Hampshire does not publish provider prices at all, so the quote is the price. That is the argument for getting two of them: nothing constrains what a provider asks, and in states without a cap the same brand quotes differently in different cities.
What else does New Hampshire charge on top of the device?
We have no separate state fee schedule on file for New Hampshire. Reinstatement and licensing charges usually sit outside the interlock program itself — check with NH Division of Motor Vehicles, or the court before you budget.
Where can I have an interlock fitted in New Hampshire?
We index 75 certified installation points across 55 New Hampshire 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.