IID Monthly Cost in Washington: Installation, Monitoring & Removal

Installation runs $75-$150 depending on vehicle type and provider. Most Washington IID vendors charge $100-$125 for standard passenger vehicle installation. Diesel engines, vehicles with manual transmissions, and motorcycles cost $125-$175 due to installation complexity. You pay installation before the device activates — this is due at your first appointment, typically within 5-10 days of court or DOL IID order. Removal costs $50-$75 at the end of your IID term. Some providers waive removal if you completed the full term without violations and paid all monthly fees on time. Intoxalock and Smart Start both offer conditional removal fee waivers for violation-free completions. LifeSafer charges removal in all cases but applies it as a credit toward future services if you re-enroll within 6 months. Total upfront cost to get driving: $175-$275 for installation plus your first month's monitoring and calibration fee. Most providers require first and last month paid upfront, pushing initial out-of-pocket to $350-$525 before the device goes live. If you're on a restricted license post-DUI and already paying SR-22 insurance premiums of $150-$300/month, budget $500-$800 total in the first 30 days to get compliant and back on the road.

Calibration is mandatory every 30-60 days depending on your phase in the IID program. You drive to the service center, the technician downloads violation data and breath test logs, recalibrates the sensor, and you're back on the road in 15-20 minutes. Washington DOL requires this data download to verify compliance — miss a calibration window by more than 5 days and your IID enters lockout mode, meaning the vehicle won't start until you calibrate. Calibration fees are $15-$35 per visit depending on provider. Smart Start charges $25-$30. Intoxalock bundles calibration into the monthly rate for their standard plan but charges $20 for off-cycle appointments if you miss your scheduled window. LifeSafer charges $20-$25 per visit as a separate line item. Guardian Interlock charges $30 for calibration and requires appointments every 30 days regardless of violation history. Missed calibration appointments extend your IID term. If you miss two consecutive calibration windows, Washington DOL treats it as a program violation and can add 30-180 days to your required IID duration depending on the violation that triggered the original order. That's 1-6 additional months of $125-$175/month monitoring cost, plus the risk of restricted license revocation if DOL interprets the missed appointments as noncompliance with your ignition interlock driver's license conditions.

Washington requires SR-22 filing for all ignition interlock driver's licenses. The IID order and SR-22 filing run concurrently — both typically for 1 year minimum after a first-offense DUI, 5 years for repeat offenses or refusal cases, and 10 years for felony DUI. Your SR-22 premium and IID monthly cost stack, not replace each other. SR-22 premiums for restricted license holders average $150-$300 per month through non-standard carriers. Washington SR-22 carriers who write policies with active IID restrictions include Dairyland, Bristol West, The General, GAINSCO, and Progressive's non-standard division. State Farm, Allstate, and GEICO typically non-renew or cancel policies when an IID requirement appears, forcing you into the non-standard market where premiums run 70-140% higher than standard auto rates. Total monthly cost for IID and SR-22 combined: $275-$475 for most restricted license holders. That's $100-$175 for IID monitoring and calibration, plus $150-$300 for SR-22 liability insurance. Over a 12-month minimum term, you're budgeting $3,300-$5,700 total. If your IID term is 5 years due to a second DUI or refusal, total cost climbs to $16,500-$28,500 across the full compliance period. Washington does not offer IID cost waivers or SR-22 fee reductions for financial hardship — payment plans exist through some providers, but the total cost remains the same.

A failed breath test — registering 0.025% BAC or higher — triggers a violation report to Washington DOL and adds $50-$100 in provider fees depending on the severity. First failed test usually incurs a $50 administrative fee and a mandatory service center visit within 48 hours. Second failed test within 6 months costs $75-$100 and extends your IID term by 30-90 days at DOL discretion. Third failed test results in restricted license revocation in most cases. Lockout mode resets cost $75-$125. If you miss a calibration appointment or accumulate multiple failed rolling retests, the device enters lockout and won't allow the vehicle to start. You must schedule an emergency service appointment, pay the lockout reset fee, and calibrate the device before driving again. Most providers charge $75 for lockout resets during business hours, $100-$125 for after-hours or weekend emergency resets. Circumvention attempts — having someone else blow into the device, disconnecting the IID, or tampering with wiring — result in immediate restricted license revocation, IID term extension of 1-5 years, and potential criminal charges under RCW 46.20.750. The IID logs every breath sample with a photo, every failed rolling retest, and every power interruption. Washington DOL reviews this data at every calibration download. One circumvention violation typically ends your restricted license and sends you back to full suspension with no early reinstatement eligibility.

Shop all four Washington-certified IID providers before installation. Prices vary by $20-$40/month for equivalent service levels, and some providers offer violation-free completion discounts that reduce your final 3-6 months of monitoring fees by 10-15%. Smart Start and Intoxalock both offer completion incentives if you maintain zero failed tests and zero missed calibrations. Move to 60-day calibration intervals as soon as eligible. Washington allows 60-day calibration spacing after your first 4 months if you have no violations. That cuts calibration visit costs in half — from 12 visits per year at $25 each ($300 total) to 6 visits per year ($150 total). The $150 annual savings matters across a multi-year IID term. Bundle IID and SR-22 quotes through the same non-standard carrier when possible. Dairyland and Bristol West both offer small premium reductions (5-8%) if you place your SR-22 policy and provide proof of IID installation through their preferred vendors. The savings are modest — $10-$20/month — but compound to $120-$240 annually. Not all carriers participate, and some providers like GAINSCO require you to use their contracted IID vendor to qualify for the bundled rate.

Washington offers IID cost assistance through the Ignition Interlock Device Revolving Account for drivers below 200% of federal poverty level. The program caps your monthly IID cost at $20-$50 depending on income, with the state subsidy covering the remainder. You apply through Washington DOL using form ADM-1032 and must provide income documentation for all household members. Approval takes 15-30 days, and subsidies apply retroactively to your installation date if approved. Most IID providers offer payment plans for installation and monthly monitoring. Smart Start allows installation cost split across the first 3 months of monitoring with no interest. Intoxalock offers bi-weekly payment scheduling aligned to paychecks. LifeSafer requires first and last month upfront but allows monthly monitoring billed in two installments per month for drivers with irregular income. None of these plans reduce total cost — they restructure timing only. SR-22 premiums for restricted license holders do not qualify for state assistance, but some non-standard carriers allow monthly payment with no down payment if you set up automatic bank draft. GAINSCO, The General, and Acceptance all offer $0-down SR-22 policies for Washington IID drivers, though monthly premiums run 8-12% higher than 6-month-paid-in-full rates. Over a 12-month term, the convenience of $0 upfront costs you an additional $150-$250 in total premium.