SR-22 vs Interlock Device: Which Requirement Ends First?

The ignition interlock device clock starts on the installation date, not the conviction date. The SR-22 filing clock starts when your carrier submits the SR-22 form to the DMV, which is typically 3-10 business days after you purchase a policy that includes the filing. If you wait to buy coverage or delay interlock installation, you're extending the total time you're paying for both requirements. Most states require the interlock device to be installed before you can reinstate your license after a DUI suspension. That means the interlock clock is already running while you're shopping for SR-22 coverage. The SR-22 clock doesn't start until you have an active policy and the insurer files proof with the state. The gap between installation date and SR-22 filing date is where drivers lose weeks or months. If you install the device on July 1st but don't secure SR-22 coverage until July 20th, your interlock requirement might expire on July 1st three years later, but your SR-22 won't expire until July 20th. You're paying the SR-22 filing fee and monitoring costs for an extra 20 days because the clocks weren't synchronized.

The ignition interlock device costs $70-$150/month depending on the provider and your state's approved vendor list. That breaks down to $50-$100 for the lease, $10-$30 for monthly calibration visits, and $5-$20 for monitoring fees. Some states require camera-equipped units, which add $20-$40/month to the base lease cost. SR-22 insurance premiums average $180-$320/month for a driver with a DUI, depending on your state's minimum liability limits and your driving history before the violation. The SR-22 filing itself costs $15-$50 as a one-time fee in most states, but some carriers charge an annual monitoring fee of $25-$75 to maintain the filing with the DMV. Combined, you're paying $250-$470/month for both the device and the insurance filing during the overlap period. When the interlock requirement ends first, your monthly cost drops by $70-$150 immediately. Your SR-22 insurance premium won't drop until the filing period expires and you can shop for standard coverage again.

Ignition interlock requirements typically run 12-36 months from the installation date, depending on whether your DUI was a first offense, second offense, or involved aggravating factors like a high BAC or an accident. First-offense DUI orders in most states require 6-12 months of interlock use. Second offenses trigger 12-24 months. Third offenses or high-BAC cases can extend to 36 months or longer. SR-22 filing periods are set by state statute and typically run 3 years from the filing date for a DUI conviction. Some states require 5 years for repeat offenses or serious violations. The filing period doesn't reduce based on good behavior or early compliance — it's a fixed calendar clock that starts when your insurer files the SR-22 and ends exactly 3 years later. In a typical first-offense DUI case, the interlock requirement ends 12-24 months before the SR-22 filing period. You'll have the device removed, but you're still carrying SR-22 insurance and paying the associated premium increase until the state-mandated filing period expires. The savings from removing the device are real, but you're still priced as a high-risk driver until the SR-22clock runs out.

Removing the ignition interlock device before your SR-22 filing period expires is the correct and expected outcome in most DUI cases. The two requirements serve different purposes: the interlock prevents you from driving impaired during the court-ordered monitoring period, and the SR-22 proves you're carrying continuous liability coverage for the full filing period the state requires. Once your interlock requirement ends, you contact the device provider to schedule removal. Most providers charge a $50-$100 removal fee. After removal, the provider submits a compliance report to the DMV or court confirming you completed the required period without violations. You keep a copy of that report — it's proof the interlock requirement is satisfied. Your SR-22 filing remains active and your insurance premium stays elevated until the SR-22 period expires. The interlock removal doesn't affect your SR-22 clock or your coverage requirements. You're still required to maintain continuous liability coverage at or above your state's minimum limits, and your insurer is still monitoring your policy for lapses and reporting to the DMV.

Your ignition interlock expiration date is stated in your court order or administrative hearing decision. If the order says "12 months from installation," you count forward from the installation date stamped on your device provider's paperwork. Most providers send a reminder 30 days before your requirement ends, but the court and DMV do not — you're responsible for tracking the date yourself. Your SR-22 expiration date is exactly 3 years from the filing date shown on the SR-22 certificate your insurer mailed you when you purchased the policy. Some insurers include the expiration date on your declarations page. Most do not. You calculate it yourself: if the SR-22 was filed on March 15, 2023, it expires on March 15, 2026. Set calendar reminders for both dates. Missing your interlock removal date doesn't reset the clock, but it means you're paying lease and monitoring fees longer than required. Missing your SR-22 expiration date doesn't trigger a lapse, but failing to notify your carrier that the requirement has ended means you may continue paying elevated premiums when you're eligible to shop for standard coverage. When the SR-22 period ends, contact your insurer and request confirmation that the filing has been closed with the state.

After interlock removal, you're still paying your SR-22 insurance premium in full until the filing period expires. The device cost is gone — typically $70-$150/month — but your insurance rate stays elevated because you're still carrying the SR-22 filing and you're still within the 3-year window most insurers use to classify DUI drivers as high-risk. Your SR-22 premium won't drop meaningfully until the filing period ends and the DUI conviction ages past the 3-year threshold most carriers apply. Some high-risk carriers offer modest rate reductions at the 12-month or 24-month mark if you've maintained continuous coverage without lapses, but the reduction is typically 5-10 percent, not the 40-60 percent drop you'll see when the SR-22 expires and you shop for standard coverage. Estimates based on available industry data; individual rates vary by driving history, vehicle, coverage selections, and location. The typical post-SR22 driver sees insurance premiums drop 30-50 percent in the first year after the filing period ends, assuming no new violations and continuous coverage during the SR-22 period.

Some carriers don't proactively notify you when your SR-22 filing period ends. The filing expires, but your policy renews at the same elevated premium because you're still classified as a high-risk driver in their underwriting system. The SR-22 is closed with the state, but your rate doesn't reflect it until you call and request confirmation or shop for a new policy. Ignition interlock providers have no financial incentive to remind you when your requirement ends. You're paying $70-$150/month for the lease and monitoring. If you don't track the expiration date and schedule removal, the device stays installed and the billing continues. Some providers auto-renew month-to-month after the court-ordered period ends, assuming you'll contact them when you're ready to remove it. This is where the information asymmetry hits hardest. The state, the court, and your carrier all assume you're tracking your own compliance deadlines. No entity sends you a notification saying "your SR-22 expires in 30 days" or "your interlock requirement is complete." You track both clocks yourself, or you pay longer than the law requires.