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Wyoming DUI penalties breakdown: every component, line by line

Our Wyoming DUI costs page gives the state overview. This page does the narrower job: it prices each component of Wyo. Stat. § 31-5-233 by tier within the ten-year window, the 0.15 interlock ladder, and the child-passenger subsection — with no added-up total.

The first offence, component by component

A first DUI within ten years in Wyoming is a misdemeanour under § 31-5-233 carrying up to six months in jail and up to $750 in fines in the published summaries of the statute, with a ninety-day licence suspension under §§ 31-7-128 in those summaries. No mandatory minimum jail term attaches at this tier, so the custody component is exposure rather than a floor — the same honest distinction this site draws for Vermont and South Dakota. Every offender is required to undergo a substance abuse assessment, the results of which the court takes into account in sentencing, in the published guidance: the assessment is therefore a component of every Wyoming case, ordered by the court's process and billed by the assessing provider, not priced as a fee in § 31-5-233 itself.

The high-concentration component at the first tier is an interlock duration, not a higher fine. Where the driver's concentration is at least 0.15, the first offence carries a six-month ignition interlock requirement in the published summaries of § 31-5-233(f) — the first step of an interlock ladder that lengthens to one year at the second offence, two years at the third, and a lifetime requirement with a reduction route at the felony tier. The device itself, its installation, monthly lease and calibration are provider charges in Wyoming as elsewhere; what the statute prices is the duration for which those charges must be carried, and that duration is what the table records.

Second, third and fourth offences, and what escalates

A second offence within ten years remains a misdemeanour but gains mandatory floors: seven days to six months in jail and fines of $200 to $750 in the published summaries, with a one-year licence suspension and a one-year interlock requirement at the 0.15 tier. A third offence within ten years carries thirty days to six months, fines of $750 to $3,000, and a three-year licence revocation under § 31-7-127 in those summaries, with a two-year interlock requirement. Note the drafting pattern: Wyoming's fine ceiling stays at $750 through the second tier and only jumps at the third, while the custody floors and licence periods escalate at every step — a driver comparing states on fine figures alone would badly underprice a Wyoming repeat case, because the escalation lives in time and revocation rather than in the fine band.

The felony line is crossed at the fourth offence within ten years: up to seven years' imprisonment and a fine of up to $10,000 in the published summaries, with a lifetime interlock requirement at the high-concentration tier subject to the statute's reduction provision. The court may also require participation in the 24/7 Sobriety Program established under the 24/7 Sobriety Program Act, W.S. §§ 7-13-1701 et seq., as an alternative or in addition to the interlock restriction, with a restricted licence available on enrolment and compliance — a programme component whose testing charges are programme charges, described here rather than priced as a § 31-5-233 tariff.

The child-passenger subsection and refusal

Wyoming prices a child passenger in its own subsection, § 31-5-233(m). A driver eighteen or older convicted with a child passenger in the vehicle during the violation faces, on a first conviction under that subsection, imprisonment of not more than one year, a fine of not more than $750, or both — doubling the ordinary first-offence custody ceiling without raising the fine ceiling. A driver previously convicted and sentenced under the child-passenger subsection, or a substantially conforming law, faces imprisonment of not more than five years on the next such conviction. Those figures are quoted from the subsection text and tabled separately, because they replace the ordinary tier's custody frame for the cases they cover rather than adding a surcharge to it.

Refusal interacts with Wyoming's implied-consent system in §§ 31-6-102 and related provisions: a driver who refuses testing faces administrative licence action — a six-month suspension for a first refusal in the published summaries — and law enforcement may seek a search warrant for a test, so refusal does not reliably avoid the concentration evidence the interlock ladder depends on. The driver has a short statutory window, twenty days in the published guidance, to request a contested-case hearing on a licence suspension through the Office of Administrative Hearings. Reinstatement after any Wyoming suspension or revocation requires the period to be served and the assessment, interlock and programme conditions to be satisfied; Wyoming does not publish a single DUI-specific reinstatement total in § 31-5-233, so none is tabled here.

Sources: Wyo. Stat. § 31-5-233 (offence tiers and the child-passenger subsection (m), quoted from the statute text); Wyo. Stat. §§ 31-7-127, 31-7-128 and 31-6-102; 24/7 Sobriety Program Act, W.S. §§ 7-13-1701 et seq.; published Wyoming penalty summaries for the tier fine and custody bands, attributed as such. Last verified: October 2026.

What this state does not publish as a single figure

Wyoming court costs are set by the court where the case is heard, not by § 31-5-233, and no single published DUI amount covers them. The substance abuse assessment and any treatment it leads to, probation supervision, 24/7 programme testing charges, and an interlock provider's installation, monthly lease and calibration charges are billed outside the statute's fine figures. Those components are described as requirements on this page rather than priced as state charges. There is no published Wyoming figure for the effect of a DUI on car insurance prices, and none is estimated here — insurance is mentioned only where a filing requirement is itself a reinstatement component.

Read the fine bands with the licence bands, not instead of them: Wyoming holds its fine ceiling at $750 through two tiers while tripling and then multiplying the licence period, so the honest price of a Wyoming repeat case is mostly time — custody floors, revocation years and interlock durations — and the table is built to show exactly that.

There is no added-up statewide total on this page for the same reason: the published components above are the figures the statute, the licensing agency or the court schedule actually sets, and the remaining components are billed case by case. Adding them together would produce a number no authority in this state has published. Use the table to price the components that apply to a specific case, and compare the national pattern in our first-offense cost guide, second-offense guide and third-offense guide.

Common questions

What is the maximum fine for a first Wyoming DUI?

$750, with up to six months in jail and a ninety-day suspension. At 0.15 or above, a six-month interlock requirement is added.

When does a Wyoming DUI become a felony?

At the fourth offence within ten years: up to seven years and a fine of up to $10,000 in the published summaries.

What does a child passenger change in Wyoming?

Under § 31-5-233(m), a first child-passenger conviction raises the custody ceiling to one year at the same $750 fine ceiling, and a repeat child-passenger conviction carries up to five years.

Sources: Wyo. Stat. § 31-5-233 (offence tiers and the child-passenger subsection (m), quoted from the statute text); Wyo. Stat. §§ 31-7-127, 31-7-128 and 31-6-102; 24/7 Sobriety Program Act, W.S. §§ 7-13-1701 et seq.; published Wyoming penalty summaries for the tier fine and custody bands, attributed as such. Last verified: October 2026. This page is educational information about costs only — not legal advice. Laws and fees change; confirm current figures with your court and your state's driver-licensing agency.