Washington's IIL Ties You to One Vehicle
You lost your license for DUI, you filed for Washington's Ignition Interlock License, and the DOL approved it—but your work requires you to drive multiple vehicles (your own truck, rental equipment for deliveries, or client vehicles for repair calls). The IIL restriction says you can drive anywhere at any time, but only in a vehicle equipped with a DOL-approved ignition interlock device. If you need to drive a second vehicle for work, you cannot legally do so unless that vehicle also has an installed IID tied to your name.
Self-employed contractors, delivery drivers, mobile repair technicians, and gig workers hit this wall immediately. Washington replaced the traditional occupational license with the IIL system under RCW 46.20.385, and that system does not recognize multi-vehicle workflows—the license follows the device, not the driver. If your business model requires vehicle flexibility, the IIL structure blocks you at the equipment level, not the route or time level.
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Get Your Free QuoteWA IIL Application Fee
$100
Washington's Ignition Interlock License application costs $100 at the Department of Licensing, paid when you submit proof of IID installation and SR-22 insurance. This fee is separate from the IID device installation cost (typically $70–$150) and monthly monitoring fees ($60–$90/month).
Washington Department of Licensing (DOL), RCW 46.20.385
How the IID Requirement Blocks Multi-Vehicle Work
The ignition interlock device is installed in a specific vehicle and calibrated to your breath pattern. Washington law requires the IID provider to submit installation certificates to the DOL before your IIL is issued. Once approved, your IIL permits you to drive that vehicle only. If you need to drive a second vehicle—whether it is a rental van for a large delivery, a client's car you are repairing, or a backup truck when your primary vehicle is in the shop—you must either install a second IID in that vehicle or you cannot drive it legally.
Installing a second IID means paying another installation fee, another monthly monitoring fee, and coordinating with the IID provider to register the second device with the DOL. Most self-employed drivers cannot afford duplicate IID costs across multiple vehicles, and rental companies do not allow IID installation in their fleet vehicles. Client vehicles present an even harder problem: you cannot install an IID in a customer's car for a one-time repair drive.
Washington's IIL statute does not include exemptions for work-related multi-vehicle use. The device requirement is absolute. If you drive without an IID in the vehicle, you are driving on a suspended license, which triggers a misdemeanor charge under RCW 46.20.342, potential IIL revocation, and extended suspension periods. The law does not distinguish between personal use and work-related necessity.
Washington's IIL does not allow exemptions for rental vehicles, client vehicles, or multi-vehicle workflows—if the vehicle you need to drive does not have your registered IID installed, you cannot legally drive it.
IIL Application Requirements for Self-Employed Drivers
First, select a DOL-approved IID provider from the state's published list and schedule installation in the vehicle you will drive for work. The provider installs the device, calibrates it to your breath sample, and issues an installation certificate. You submit that certificate to the DOL along with proof of SR-22 insurance (required for all IIL applicants under Washington financial responsibility law), a completed IIL application, and the $100 fee. Processing typically takes 5–10 business days after the DOL receives all documents.
If your work requires a second vehicle, you must install a second IID before driving that vehicle. The provider charges a second installation fee and monthly monitoring fee. Most self-employed drivers cannot absorb duplicate IID costs, so they consolidate all driving into one vehicle or exit work requiring multi-vehicle access. Rental companies and clients will not allow IID installation in their vehicles, which eliminates those pathways entirely.
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SR-22 Insurance and Monthly IID Costs
Washington requires SR-22 insurance for all IIL applicants. The SR-22 is a liability certification your insurer files with the DOL proving you carry at least the state minimum coverage: $25,000 per person for bodily injury, $50,000 per accident, and $10,000 for property damage. Most carriers charge $15–$35 to file the SR-22 form. Your monthly premium will increase significantly after a DUI conviction—self-employed drivers in Washington with a DUI typically pay $180–$320 per month for liability-only SR-22 policies, compared to $85–$140 per month for clean-record drivers.
The IID itself costs $70–$150 to install and $60–$90 per month for monitoring and calibration. Washington law requires monthly calibration appointments with your IID provider; missing an appointment triggers a violation report to the DOL, which can result in IIL suspension. If you install IID in two vehicles, you pay double installation and double monthly monitoring fees. Total monthly cost for one vehicle with IID and SR-22 insurance: approximately $240–$410. For two vehicles: $360–$590 per month, which most self-employed drivers cannot sustain.
Carriers writing SR-22 policies in Washington include Geico, Progressive, Dairyland, Bristol West, National General, State Farm, and The General. Non-owner SR-22 policies (for drivers without a vehicle) do not satisfy the IIL requirement because the IIL mandates IID installation in a specific registered vehicle. Self-employed drivers must own or have exclusive long-term access to the vehicle they register for IIL use.
WA SR-22 Premium Post-DUI
$180–$320/mo
Self-employed drivers in Washington with a DUI conviction typically pay $180–$320 per month for liability-only SR-22 insurance, compared to $85–$140 per month for drivers with clean records. Rates vary by age, county, vehicle type, and prior insurance history.
Carrier rate estimates based on Washington DOL SR-22 filing requirements
When Multi-Vehicle Work Is Not Compatible with IIL
If your self-employment depends on driving vehicles you do not own—delivering rental vans, operating client vehicles for repair, or using employer-provided equipment as a 1099 contractor—the IIL pathway does not work. Washington law does not allow exemptions for commercial necessity. You cannot drive a rental vehicle or client vehicle legally under an IIL unless that vehicle has your registered IID installed, which rental companies and clients will not permit.
Some self-employed drivers attempt to work around the restriction by consolidating all driving into one IID-equipped personal vehicle and declining jobs requiring other vehicles. Others exit the self-employment work entirely and take W-2 positions where the employer provides a single assigned vehicle. A third group waits out the suspension period without applying for an IIL, choosing unemployment over the IID cost and restriction burden. Washington does not offer a hardship license pathway for non-DUI suspensions (points accumulation, unpaid tickets, or uninsured driving), so the IIL is the only restricted driving option available to DUI-suspended drivers.
Compare SR-22 Carriers and Calculate IID Cost
If you decide to pursue the IIL despite the multi-vehicle restriction, your next step is securing SR-22 insurance and budgeting for IID installation and monitoring. Request quotes from carriers writing SR-22 policies in Washington and ask each carrier how they calculate premiums for self-employed drivers with DUI convictions—some carriers offer better rates for drivers with business use endorsements. Once you have insurance in place, contact a DOL-approved IID provider for installation scheduling and cost estimates. Factor in monthly monitoring fees when deciding whether the IIL structure supports your business model or whether waiting out the suspension makes more financial sense.