Ignition Interlock Cost in Rhode Island: What You Pay Month by Month

The ignition interlock cost in Rhode Island is not one number, because the state does not set the price. The device is leased from a private vendor the DMV certifies, and under R.I. Gen. Laws § 31-27-2.8(g)(3) the court orders you to pay "the reasonable cost of leasing or buying, monitoring, and maintenance" of the system. That means an installation charge, a monthly lease, calibration visits, a removal charge, and a flat $100 DMV fee to add the restriction to your license.

A typical 6 month first offense order lands somewhere between $600 and $1,000 all in. A 1 year order runs roughly $900 to $1,600. A 2 year order can pass $2,500. Those are estimates built from typical vendor ranges, not statutory figures. The only fixed numbers here are the ones the DMV publishes.

When Rhode Island Requires an Ignition Interlock

Section 31-27-2.8(a) covers anyone convicted of DUI under § 31-27-2(d)(1), (d)(2), or (d)(3), and anyone suspended for a chemical test refusal under § 31-27-2.1.

Whether it is optional or mandatory depends on the tier. For a first offense with a BAC of 0.08 to under 0.15, § 31-27-2 says the judge "may" order it. For a first offense at 0.15 or above, or one involving drugs, the judge "shall" order it. Every second and third offense carries the mandatory "shall." Among the BAC tiers, 0.15 is the line that turns the interlock from a judgment call into a requirement.

How Long You Keep the Device

Section 31-27-2.8(b) sets the ranges. The judge or magistrate picks a period inside the range at sentencing:

• First offense DUI, § 31-27-2(d)(1): minimum 30 day suspension, interlock 3 months to 1 year
• First refusal, § 31-27-2.1(c)(1): minimum 30 day suspension, interlock 6 months to 2 years
• Second offense DUI, § 31-27-2(d)(2): minimum 45 day suspension, interlock 6 months to 2 years
• Second refusal, § 31-27-2.1(c)(2): minimum 60 day suspension, interlock 1 to 4 years
• Third offense DUI, § 31-27-2(d)(3): minimum 60 day suspension, interlock 1 to 4 years
• Third refusal, § 31-27-2.1(c)(3): minimum 90 day suspension, interlock 2 to 10 years

Subsection (d) adds 1 to 5 years for DUI resulting in death or serious bodily injury, and subsection (e) adds 6 months for driving on a license suspended for DUI or refusal. Notice that a refusal carries a longer range than the DUI at the same tier, which is why I treat the refusal side of a case at the Traffic Tribunal as its own fight.

The Cost Components, One at a Time

The DMV page listing certified providers says each company "has their own fees and policies." What follows are typical vendor ranges, not figures set by statute or the DMV.

Installation. A one-time charge to wire the unit into your ignition, typically $70 to $150.

Monthly lease. The number that matters most, because it repeats. Typical range: $60 to $100 a month, with camera and GPS units at the high end. Over 12 months the lease alone is usually $700 to $1,200.

Calibration and monitoring. Section 31-27-2.8(g)(2) requires monitoring by a DMV-approved firm at least once every 6 months, "or more frequently as the circumstances may require." Most vendors calibrate every 30 to 60 days. Some bundle it into the lease; others bill $25 to $50 per visit. A missed appointment, a failed test, or a missed rolling retest can trigger a lockout that costs money to clear.

Removal. A one-time charge, typically $50 to $150.

State fees. The only part with fixed numbers. The DMV adjudication fee table lists an Ignition Interlock Device transaction at $100.00. When the period ends, you return to the DMV to remove the restriction, pay the DUI license reinstatement fee of $353.50, and pay for a duplicate license without the restriction printed on it. The DMV does not offer payment plans.

A Month by Month Picture

On a 6 month first offense order, month 1 is the expensive one: installation, the first lease payment, and the $100 DMV fee, so roughly $230 to $350 before you drive a mile. Months 2 through 6 are the lease with calibration folded in or billed separately, roughly $60 to $150 each. The final month adds removal, then the reinstatement fee and duplicate license at the DMV. Total: roughly $600 to $1,000 on the device side, plus state reinstatement costs.

A 12 month order runs roughly $900 to $1,600. A 2 year second offense order is roughly $1,700 to $2,800. A 4 year order can exceed $5,000 in lease payments alone. The length of the order is the single biggest cost variable, and it is set at a sentencing hearing.

Who Is Certified to Install One in Rhode Island

The DMV publishes the list of companies certified to lease, sell, and install interlock systems here. As of the current list, those are LifeSafer of Rhode Island, Smart Start, Alcohol Detection Systems, Guardian Interlock, Intoxalock, Low Cost Interlock, and Sens-O-Lock of America. Each device model carries a certification expiration date.

I do not recommend one vendor. Call at least two, ask for the total over the full court-ordered period, and ask about lockout fees.

What a Violation Costs You

Violating the order is a separate misdemeanor under § 31-27-2.8(j), punishable by up to 1 year in jail, a fine of up to $1,000, or both. A second violation within 6 months carries a mandatory minimum of 10 days.

Subsection (k) defines a violation broadly: tampering with the device, driving any vehicle that does not have one, and asking someone else to blow into it. Under subsection (l), the friend who blows commits their own misdemeanor. The court can also revoke a hardship license and extend the interlock period.

The Interlock-Restricted Hardship License

Under § 31-27-2.8(c), a hardship license is granted only in conjunction with an interlock and/or blood and urine testing. It allows 12 continuous hours of driving a day for approved reasons: work, medical appointments, job training, school, or religious purposes.

For a first offense where the finding is alcohol only, subsection (b)(7)(i) says the magistrate "shall, upon request, immediately grant" the hardship license after a finding of need and proof of installation. Subsection (c) also lets the judge impose up to 90 days of hard loss first, so the start date is argued in the courtroom.

Subsection (i) lets the court permit you to drive an employer-owned vehicle without an interlock during work, which takes a targeted request at sentencing. My page on getting a hardship license after a Rhode Island DUI covers the affidavit and the hearing.

Can the Interlock Period Be Shortened?

The honest answer is that § 31-27-2.8 contains no early removal provision. The statute sets a range, the judge picks a point inside it, and the DMV enforces what the court ordered. Nothing in the section says the device comes off early for good behavior.

So the place to shorten the period is at sentencing. The gap between 3 and 12 months on a first offense is roughly $700 to $1,000 in lease payments, and proof of installation, proof of employment, and a clean record can move the judge toward the bottom.

Rhode Island Has No SR-22

Other states add an SR-22 line item. Rhode Island does not. The DMV eliminated the SR-22 requirement in 2018, so there is no certificate to file and no filing fee. Your insurer may still raise your premium, but that is a market decision, not a state form.

How I Handle These Cases

When someone calls my office about an interlock, the first question is whether it should be on the table at all. A first offense under 0.15 leaves it to the judge, and the surest way to avoid the cost is to challenge the stop, the field sobriety tests, the breath test, and the refusal advisement before sentencing.

If the case is heading toward a disposition, I focus on the three things that move the cost: where in the range the period lands, whether the hardship license starts immediately or after a hard-loss period, and whether an employer vehicle exemption applies. I bring proof of installation and proof of need to the hearing.

As an RI DUI lawyer, I handle the District Court charge and the Traffic Tribunal refusal together so the interlock period is set once. My interlock and hardship license defense work is described in more detail on its own page.

Frequently Asked Questions

How much does an ignition interlock cost per month in Rhode Island?

Typical vendor lease rates run about $60 to $100 a month, with camera and GPS units at the higher end. Calibration visits are sometimes bundled and sometimes billed at $25 to $50 each. These are vendor ranges, not figures set by statute.

Does the state of Rhode Island charge a fee for the interlock?

Yes. The DMV adjudication fee table lists an Ignition Interlock Device fee of $100.00. When the period ends you also pay the DUI license reinstatement fee of $353.50 and a duplicate license fee.

Is an ignition interlock mandatory for a first offense DUI in Rhode Island?

It depends on the BAC tier. Under 0.15, § 31-27-2 says the judge may order it. At 0.15 or above, or in a drug case, the judge shall order it. All second and third offenses carry mandatory language.

How long do I keep the interlock after a first refusal?

Section 31-27-2.8(b)(2) sets the range for a first refusal at 6 months to 2 years, with a minimum 30 day suspension. That is longer than the 3 month to 1 year range for a first offense DUI.

What happens if I drive a car without the interlock?

Driving any vehicle without the device is a violation under § 31-27-2.8(k). It is a separate misdemeanor punishable by up to 1 year in jail, a fine of up to $1,000, or both. A second violation within 6 months carries a mandatory 10 day minimum.

Do I need SR-22 insurance with an interlock in Rhode Island?

No. Rhode Island eliminated the SR-22 requirement in 2018. There is no certificate to file and no filing fee, though your insurer may still raise your rate.

Talk to Me Before the Interlock Period Is Set

The length of the order, the start of the hardship license, and the employer vehicle exemption are all decided at a hearing. Call 401-573-2265 for a free consultation, 24 hours a day, 7 days a week. My offices are at 127 Dorrance Street in Providence, next to the Garrahy Judicial Complex, and at 970 Main Street, Suite 2, in West Warwick.

This post is general information about Rhode Island law and is not legal advice for any specific case. Vendor costs are typical ranges that change over time.