Ignition interlock cost calculator
Pick a state, enter the months the device must stay installed, and this calculator adds up what an ignition interlock program costs from installation to removal. The arithmetic runs on the ranges vendors publish on their own price pages, or on the figures from one vendor's written quote.
Where a state states its minimum interlock period as a plain number, the months field is filled in from the verified record; where the period depends on the suspension, the court or the blood-alcohol level, the state's own wording is shown instead. State fee caps and reduced-cost programs appear below the estimate for the state chosen.
Estimate
No state selected: the figures below use national ranges only.
| Item | Low | High |
|---|---|---|
| Installation | $50 | $250 |
| Set-up / enrollment | $0 | $40 |
| Monthly lease × 12 | $600 | $1,800 |
| Calibration / service × 12 | $0 | $300 |
| Removal | $50 | $150 |
| Program total | $700 | $2,540 |
| Per month, all-in | $58 | $212 |
Vendor ranges as published on the vendors' own price pages, checked 2026-08. Sources are listed on the cost page. Cost page
This is arithmetic on published ranges, not a quote. The required period is set by the statute, the court or the licensing agency; vendors charge their own prices, and a vehicle, a lockout or a missed appointment can add fees. Figures are rounded to the nearest ten dollars.
How the estimate is built
The total is installation plus any set-up or enrollment fee, plus the monthly lease multiplied by the months on the device, plus a calibration or service charge for each visit, plus removal. Service visits are commonly required every 30 days, in some programs every 60. The service interval and the number of months are the two inputs that move the total most.
The low and high columns are the lowest and highest figures published by the vendors on the cost page, checked on the date shown. They are not the cheapest and most expensive quotes a driver could receive: a vendor can charge more for a hybrid or push-button vehicle, for a lockout, for a missed appointment or for a change of vehicle, and some vendors run promotions below their published floor.
What the state sets and what it does not
The statute or the licensing agency sets the required period and, in a handful of states, caps what an approved vendor may charge or requires reduced pricing for drivers who meet a financial-hardship standard. Tennessee, Virginia and Kentucky publish fee caps; Washington reimburses part of the cost for indigent license holders; Kansas and Wisconsin cut the charge in half below an income threshold. Each rule is linked to its official page when that state is chosen.
The state does not set vendor prices anywhere else. Separate state-set program fees, such as an administrative or monitoring fee paid to the agency, are listed on each state page and are not part of the vendor arithmetic here.
Frequently asked questions
- Why is the months field empty or unchanged for some states?
- The field is prefilled only when the verified record states the minimum period as a single number, such as "6 months" or "1 year". Where the period equals the suspension, runs for the term of probation, or depends on the blood-alcohol level, the state's wording is shown and the reader enters the months from the court or agency order.
- Are the low and high figures the cheapest and most expensive vendors?
- No. They are the lowest and highest figures published on the vendors' own price pages on the date checked. Actual charges depend on the state program, the vendor, the vehicle and any lockouts or missed appointments.
- Does the estimate include the license reinstatement fee or the SR-22?
- No. The device is paid to the vendor; the reinstatement fee, any restricted-license fee and any SR-22 agency fee are paid to the state. The reinstatement cost calculator adds those up for the same state.