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 duration: 1 year (only if BAC 0.15%+ or refusal; first offense OWI is not criminal). Monthly cost: $60-$95.
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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
| Offense | IID Duration |
|---|---|
| 1st Offense | 1 year (only if BAC 0.15%+ or refusal; first offense OWI is not criminal) |
| 2nd Offense | 1 year |
| 3rd Offense | 1 year |
| 4th+ Offense | 1 year (minimum; court may order longer) |
BAC threshold: 0.15% BAC for first offense; all repeat offenses
IID Cost Breakdown in Wisconsin
| Item | Cost | Notes |
|---|---|---|
| Installation | $70-$150 | One-time fee. Takes about 1 hour. |
| Monthly Lease + Monitoring | $60-$95/mo | Includes device lease and monitoring. |
| Calibration | $25-$65 | Every 60 days. |
| Removal | $50-$100 | One-time fee when IID period ends. |
| Estimated Total (6 months) | $480-$820 | Install + 6 months lease + removal. |
| Estimated Total (12 months) | $840-$1,390 | Install + 12 months lease + removal. |
One-time
Lease + monitoring
Every 60 days
One-time
All-in estimate
All-in estimate
Approved IID Providers in Wisconsin
Contact providers directly for current pricing and service center locations in Wisconsin. Compare at least 2-3 providers before choosing — prices and service quality vary.
Restricted License with IID
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?
How long do I need an IID in Wisconsin?
How much does an IID cost in Wisconsin?
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