SecondChanceInfo

Ignition Interlock Device (IID) in Wisconsin

Wisconsin uses the term "OWI" for impaired driving offenses. IID requirement: required for high bac or repeat offenses. First offense scope: 1 year (only if BAC 0.15%+ or refusal; first offense OWI is not criminal). Confirm your actual notice and license status.

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Required for high BAC or repeat offenses

Quick Answer

Wisconsin requires IID for first-offense OWI with BAC of 0.15% or higher, and for all repeat OWI offenses. Wisconsin is notable because first-offense OWI is a civil forfeiture (not criminal) unless a minor was present.

IID Duration by Offense

OffenseIID Duration
1st Offense1 year (only if BAC 0.15%+ or refusal; first offense OWI is not criminal)
2nd Offense1 year
3rd Offense1 year
4th+ Offense1 year (minimum; court may order longer)

BAC threshold: 0.15% BAC for first offense; all repeat offenses

Confirm the device, provider and written quote

Check the responsible authority’s current approval information for the particular device and installer. Request the billing unit, included services, actual paid visit schedule, taxes, fees and removal terms in writing. Confirm financial assistance separately.

Add your own quoted charges in the IID worksheet. Unknown charges stay unknown; no local price or appointment count is assumed.

Restricted License with IID

Available

Wisconsin allows an occupational license with IID for essential driving purposes.

Tampering / Circumvention Penalties

Tampering with an IID in Wisconsin carries fines up to $600 and extension of the IID requirement.

Early Removal

Wisconsin may allow early removal at the court's discretion.

Wisconsin-Specific Notes

Wisconsin is unique: first-offense OWI is a civil forfeiture, not a criminal offense (unless a minor was in the vehicle). This means IID is only required for first offenders with high BAC (0.15%+). Repeat OWI offenses are criminal and all require IID.

Frequently Asked Questions

Is an IID required for a first OWI in Wisconsin?
Only if your BAC was 0.15% or higher, or you refused the chemical test. Standard first-offense OWI (BAC below 0.15%) does not require IID. Note: first-offense OWI in Wisconsin is a civil forfeiture, not criminal.
How long do I need an IID in Wisconsin?
1 year for all offense levels where IID is required.
How much does an IID cost in Wisconsin?
Get a written quote for your vehicle and program. Confirm the billing period, included service, separately paid visits, taxes, state/program fees and removal charges. Verify any financial assistance before assuming a discount. A generic state price range is not your quote.

Related Wisconsin Guides

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Disclaimer: This is informational only, not legal advice. IID requirements, costs, and approved providers change frequently. Verify current requirements with the Wisconsin DMV, your IID provider, or a qualified DUI attorney in Wisconsin.
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Sources

NHTSA: interlock device and program background. This national reference does not verify every state rule above. Confirm the applicable law and current instructions with the authority named on your order or licensing notice.