Is an ignition interlock required after a first DUI conviction in Idaho?

Yes, with limited exceptions. Under Idaho Code § 18-8005(1)(e), a first-time DUI offender must, unless an exception is granted under § 18-8002(12), have a state-approved ignition interlock system installed within 10 days after the 30-day absolute suspension ends, for a period ending one year after the suspension period ends.

At what breath alcohol level does an Idaho interlock prevent the vehicle from starting?

Idaho Code § 18-8008(2) states the calibration setting at which the ignition interlock system will prevent the motor vehicle from being started is .025, and the vendor must notify the prosecuting authority any time a person is prevented from starting a vehicle.

How much is the Idaho license reinstatement fee after a DUI?

The Idaho Transportation Department lists a $285 reinstatement fee for an Idaho DUI conviction and a $245 reinstatement fee for an Administrative License Suspension (ALS), a refusal, or an out-of-state DUI conviction.

Who certifies ignition interlock devices in Idaho?

Under Idaho Code § 18-8008(3)–(4), an ignition interlock system is a breath alcohol ignition interlock device, including a camera, certified by the transportation department, which sets standards by rule for certification, installation, repair and removal. ITD publishes the list of certified providers on its Driver Records and Suspensions page.

IDVerified against primary sources · August 28, 2026

Idaho ignition interlock & DUI requirements

Ignition interlock device rules, approved vendors, SR-22 insurance filing, and license reinstatement in Idaho, cited to the statute and the Idaho Transportation Department (ITD), Division of Motor Vehicles – Driver Services.

IID on first offense: Required
Minimum IID period (first): 1 year following the end of the suspension period
SR-22 filing: Required · 3 yr
Reinstatement fee: $285

What Idaho law requires

Idaho's ignition interlock, SR-22, and reinstatement rules are set by the statute and agency rules cited below. The values in the tables on this page are taken from those sources and are not interpretations of how they apply to any particular case.

Primary source: Idaho Code § 18-8008

Ignition interlock requirement

Ignition interlock requirements in Idaho by offense
Item	Idaho rule
IID on first offense	Required
Minimum IID period, first offense	1 year following the end of the suspension period
Minimum IID period, repeat offense	1 year (interlock restriction period ends 1 year from proof of installation, following the mandatory 1-year suspension)

Idaho Code § 18-8005(1)(e) requires a first-offense DUI offender, unless an exception is granted under § 18-8002(12), to install a state-approved ignition interlock system within 10 days after the 30-day absolute suspension ends, for a period ending one year after the suspension period ends. § 18-8008(2) sets the lockout calibration at .025. A separate one-year interlock requirement also attaches to an administrative license suspension (ALS) under § 18-8002A.

Approved interlock providers

Vendors listed here appear on the Idaho licensing agency's approved-device list. Listing order is alphabetical and is not a ranking or endorsement. Installation locations are on each vendor's own locator.

Official approved-vendor list: Idaho agency vendor list

Approved interlock vendors in Idaho
Vendor	Website	Location finder
Alcohol Detection Systems	Alcohol Detection Systems website	Find a location
B.E.S.T. Labs, Inc	B.E.S.T. Labs, Inc website	Find a location
Guardian Interlock	Guardian Interlock website	Find a location
Intoxalock	Intoxalock website	Find a location
LifeSafer	LifeSafer website	Find a location
Low Cost Interlock, Inc.	Low Cost Interlock, Inc. website	Find a location
RoadGuard Interlock	RoadGuard Interlock website	Find a location
Smart Start	Smart Start website	Find a location

SR-22 requirement

An SR-22 is a certificate an insurer files with the state to confirm that a driver carries the liability coverage the state requires. Some states use an FR-44 or a different form for alcohol-related offenses; where Idaho does, the sources below say so.

SR-22 requirement in Idaho
SR-22 filing required after a DUI	Yes
Filing period	3 years

SR-22. ITD states an SR-22 must be maintained for three years beginning at the conclusion of the DUI suspension period; ITD's SR-22 list cites DUI (IC 18-8004) as a conviction requiring an SR-22.

Program costs

Fees set by the state are cited to the fee schedule. Vendor charges vary by vendor and are shown as published ranges with the month they were checked.

Post-DUI program costs in Idaho
Item	Amount	As of
License reinstatement fee	$285	2026-08-28
DUI (Idaho conviction) reinstatement fee	$285	2026-08
Administrative License Suspension (ALS) / refusal / out-of-state DUI reinstatement fee	$245	2026-08
Restricted Driving Permit (ALS) application fee	$60	2026-08
Financial hardship	Court may find an offender eligible to use the court interlock device and electronic monitoring device fund (Idaho Code § 18-8010) for installation and operation of the device, based on evidence of financial hardship (Idaho Code § 18-8008(1)(b)).	2026-08

Frequently asked questions

Is an ignition interlock required after a first DUI conviction in Idaho?: Yes, with limited exceptions. Under Idaho Code § 18-8005(1)(e), a first-time DUI offender must, unless an exception is granted under § 18-8002(12), have a state-approved ignition interlock system installed within 10 days after the 30-day absolute suspension ends, for a period ending one year after the suspension period ends.
At what breath alcohol level does an Idaho interlock prevent the vehicle from starting?: Idaho Code § 18-8008(2) states the calibration setting at which the ignition interlock system will prevent the motor vehicle from being started is .025, and the vendor must notify the prosecuting authority any time a person is prevented from starting a vehicle.
How much is the Idaho license reinstatement fee after a DUI?: The Idaho Transportation Department lists a $285 reinstatement fee for an Idaho DUI conviction and a $245 reinstatement fee for an Administrative License Suspension (ALS), a refusal, or an out-of-state DUI conviction.
Does Idaho require an SR-22 after a DUI?: Yes. The Idaho Transportation Department states that a person found guilty of DUI is required to maintain an SR-22 insurance policy for three years, beginning at the conclusion of the suspension period. Since January 1, 2025, SR-22/26 information is submitted through the State of Idaho Insurance Verification System.
Who certifies ignition interlock devices in Idaho?: Under Idaho Code § 18-8008(3)–(4), an ignition interlock system is a breath alcohol ignition interlock device, including a camera, certified by the transportation department, which sets standards by rule for certification, installation, repair and removal. ITD publishes the list of certified providers on its Driver Records and Suspensions page.