How Much Does an Interlock Device Cost?

Interlock drivers are required to pay for the cost of their device, though some states offer financial assistance to those who qualify. The costs vary by state, but typically an IID will cost between $70 and $150 to install. After installation, users will pay the average monthly lease price of $60 to $90.

The installation fees cover the cost of having the device properly installed by a state-certified installation technician. The technician will also show you how your device works and provide any necessary paperwork you need. Some states require proof of installation before issuing an IID license.

Monthly lease fees cover the use of the device and the monthly reporting required by all states. The cost for devices can vary depending on state requirements, like a camera or GPS. Our advisors can help determine your total costs and what device meets your state’s criteria.

What are the other Costs of a DUI?

A DUI conviction is not only stressful, it can be extremely expensive. In addition to legal fees and penalty fines, there are a variety of additional and ongoing costs for DUI offenders. Your actual costs will vary depending on your state and your offense.

However, you may have some or all of the following charges:

What if I can’t afford my ignition interlock device?

In most states, the offender pays all costs associated with the ignition interlock device. Although ignition interlocks (car breathalyzers) are one of the most affordable components of a drunk driving conviction, sometimes assistance is needed. Many states offer financial assistance, and an interlock advisor can help determine if you qualify.

Learn more about your state's requirements and pricing.

Interlock Advisors are Here to Help

Interlock advisors are familiar with state regulations and what IID requirements are. Fill out the form below and an advisor will contact you to guide you through our simple, one-step, application process.


By submitting this form, you agree and consent to receive emails, phone calls using automated technology and/or prerecorded messages and SMS/text messages from DMVInterlock.com and its affiliates. No purchase necessary; message and data rates may apply.