Utah takes drunk driving seriously. More seriously than almost any other state in the country. If you drive in Utah, you need to know these rules.
This guide breaks down Utah’s DUI laws in plain English. You’ll learn the legal limits, the penalties, and the big new changes that kicked in on January 1, 2026.
What Is a DUI in Utah?
DUI stands for “Driving Under the Influence.” In Utah, it means driving a vehicle while impaired by alcohol, drugs, or both.
Here’s where Utah is different from most states. Utah’s legal blood alcohol concentration (BAC) limit is 0.05%. That’s the percentage of alcohol in your blood. Most other states use 0.08%. Utah’s limit is the lowest in the entire country.
So simple. So strict. Right?
BAC is measured by a breath test, blood test, or urine test. If you blow a 0.05% or above, you can be arrested for DUI. Even one or two drinks could put you over that limit.
Utah’s DUI Laws: The Basics
The Legal Limit
Utah enforces a 0.05% BAC limit, the lowest in the US. This applies to most drivers 21 and older. But other limits exist for certain groups.
Commercial driver’s license (CDL) holders operating a commercial vehicle are legally impaired at a BAC of 0.04% or higher. Think truck drivers, bus drivers, and similar professionals.
For drivers under 21, Utah has a zero-tolerance policy. Any measurable alcohol in their system can lead to serious consequences. More on that below.
What Counts as a DUI?
Utah also prohibits being in “actual physical control” of a vehicle while under the influence. Utah courts apply a “totality of circumstances” test to decide whether a particular driver is in actual physical control.
Wondering what that means? It basically means you can get a DUI even if the car isn’t moving. Sitting in the driver’s seat with the keys in the ignition? That could count. Utah courts look at the full picture.
Drugs count too. Prescription medications, marijuana, and illegal substances can all lead to a DUI charge. You don’t have to be drunk to get a DUI in Utah.
First Offense DUI Penalties
Okay, this part is important.
A first-time DUI offense within 10 years may result in 2 to 180 days in jail, fines of $700 to $1,000, along with a 120-day driver’s license suspension.
Let’s break that down:
A first offense minimum penalty includes not less than 48 consecutive hours in jail, OR 48 hours of compensatory service work, OR electronically monitored house arrest. The fine is a minimum of $700 plus surcharges. The license is suspended for 120 days. The driver also becomes an alcohol-restricted driver for 2 years, meaning driving with any measurable amount of alcohol in their system becomes a separate offense.
Pretty straightforward. But it gets more serious fast.
Utah law mandates ignition interlock devices for all DUI convictions. First-time offenders must install an ignition interlock device for a minimum of 18 months after regaining driving privileges. An ignition interlock device (IID) is a breathalyzer installed in your car. The car won’t start if it detects alcohol.
The initial installation cost is approximately $150, with monthly maintenance fees up to $150. That adds up fast.
Second Offense DUI Penalties
A second DUI within 10 years hits much harder.
If convicted of a second DUI offense within a 10-year window, the penalties include 10 to 180 days in jail, fines from $800 to $2,500, and a two-year license revocation.
For a second offense, the convicted driver faces a mandatory minimum of 10 days in jail, or five days with an additional 30 days of electronic monitoring.
Think of it like this: the second offense is not just a bigger fine. It’s a fundamentally different situation. You now face a Class A misdemeanor. That stays on your record.
Repeat offenders face mandatory ignition interlock requirements that increase substantially with each conviction, from 2 years for a second offense up to 10 years for felony convictions.
Third Offense: Now It’s a Felony
Hold on, this part is really important.
A third DUI offense within 10 years is a third-degree felony. Felony convictions carry a prison sentence of up to five years.
For a third DUI offense, mandatory incarceration is required, with a minimum of 62 days in jail. Given the felony status, the court also has the option to sentence the offender to prison, with potential sentences ranging up to 5 years. The driver’s license is suspended for two years following a third DUI conviction.
A third and subsequent felony offense requires a minimum $1,500 fine plus surcharge, mandatory 240 hours of inpatient treatment and aftercare, and the driver becomes an alcohol-restricted driver for 10 years.
A felony conviction can impact housing, employment, and firearm ownership. This isn’t just a traffic ticket. It follows you for life.
Extreme DUI: Utah’s Harshest Category
Here’s where things get serious.
Under Utah law, extreme DUI is defined as driving with a blood alcohol concentration of 0.16% or higher, exactly double Utah’s standard limit. This classification also applies when alcohol is combined with other illegal substances.
An extreme DUI conviction carries a minimum of five days in jail, or alternatively two days in jail combined with 30 days of home confinement. These minimums are not subject to judicial discretion. The court cannot reduce them.
Yep, that’s all the flexibility a judge has. Zero. If you hit 0.16%, those mandatory minimums kick in automatically.
The New 2026 Interdicted Person Rule
Wait, it gets bigger. A major new law took effect on January 1, 2026.
HB 437, known as the Interdicted Person Amendments, introduces a system that directly limits access to alcohol for individuals convicted of extreme DUI offenses, adding a visible, ongoing consequence that follows a person well beyond their court date.
The new law allows Utah courts to classify certain DUI offenders as “interdicted persons,” which limits their ability to purchase alcohol and requires a specially marked driver’s license or ID.
Individuals convicted of an extreme DUI may be designated as “interdicted” and prohibited from buying alcohol for a period of time. The 100% ID Law also now requires every customer purchasing alcohol in Utah to show identification, regardless of age or appearance.
Honestly, this is a first-of-its-kind rule in the country. It means the consequences of an extreme DUI now follow you into bars and liquor stores, not just courtrooms.
Underage DUI Laws
Confused about the rules for drivers under 21? Let me break it down.
Utah has a zero-tolerance policy for underage drinking and driving. The legal limit for drivers under 21 is essentially zero.
If an underage driver has a BAC of 0.05% or higher, they face the same penalties as an adult, including possible jail time and significant fines.
For drivers aged 19 and 20, the license suspension is 1 year or until they reach 21. For drivers younger than 19, the license suspension will remain in effect until age 21.
Most people don’t realize how strict these rules are for young drivers. Don’t be caught off guard.
Refusing a DUI Test
Sound complicated? It’s actually not. If you refuse a breath test or blood test, you still face consequences.
A first refusal will result in an 18-month license suspension. That’s longer than the suspension for actually failing the test.
Refusing a test doesn’t necessarily protect a motorist from a DUI conviction. A prosecutor can use a driver’s refusal to take a chemical test as evidence at trial to prove the DUI offense.
So refusing the test doesn’t make your situation better. It often makes it worse.
DUI Causing Injury or Death
This is where penalties become severe.
Utah treats DUI-related fatalities as serious felonies. DUI causing death can carry up to 15 years in prison and substantial fines. If the driver flees the scene, the charge becomes even more severe.
Less severe than murder, but still potentially a decade-plus in prison. One bad decision can change everything.
Special Circumstances That Increase Penalties
Wondering if certain situations make your DUI charge worse? They do.
A first DUI is elevated to a Class A misdemeanor if the driver is traveling the wrong way on a highway or is carrying a passenger younger than 16 (younger than 18 if the driver is 21 or older). A driver can be charged with separate offenses for each underage passenger.
So a driver with two child passengers and a DUI could face three separate charges. That’s a lot.
A Class A misdemeanor conviction carries a maximum of 364 days in jail and up to $2,500 in fines.
The 24/7 Sobriety Program
Here’s one option that might help first-time offenders.
Utah’s 24/7 Sobriety Program offers an alternative to jail for people convicted of DUI by focusing on accountability and sobriety. When ordered into this program, you must submit to alcohol or drug testing twice a day, every day, to prove you’re staying sober.
It’s not a free pass. It’s still strict. But it can help some people avoid jail time while getting their life back on track. Personally, I think this is one of the smarter parts of Utah’s DUI laws.
How to Handle a DUI Stop in Utah
Here’s what you need to know if you’re ever pulled over.
Stay calm. Pull over safely and follow the officer’s instructions. Be polite.
If you’re arrested for a DUI in Utah, you face a complex legal process with both administrative and criminal consequences. These two processes operate independently but can overlap.
If disputing a license suspension, you must request a hearing with the Utah Driver License Division (DLD) within 10 days of your arrest.
That 10-day window is critical. Miss it and you lose the right to fight the administrative suspension. Act fast if you’ve been arrested.
Trust me, getting a lawyer involved quickly makes a real difference. DUI law in Utah is complex. An experienced attorney knows the system and your options.
Frequently Asked Questions
What is the legal BAC limit in Utah?
Utah’s BAC limit is 0.05% for most adult drivers, the lowest in the country. Commercial drivers face a stricter 0.04% limit.
Can I get a DUI without driving?
Yes. Utah law includes being in “actual physical control” of a vehicle. Even sitting in a parked car with the keys can lead to a DUI charge.
What happens to my license after a first DUI?
Your license is suspended for 120 days on a first offense. You may apply for limited driving privileges by installing an ignition interlock device.
What is the new 2026 interdicted person law?
Starting January 1, 2026, people convicted of extreme DUI can be classified as “interdicted persons.” They are prohibited from buying alcohol and receive a specially marked ID or driver’s license.
Can a DUI become a felony in Utah?
Yes. A third DUI conviction within 10 years is a third-degree felony, carrying up to 5 years in prison, fines over $2,500, and a two-year license suspension.
What if I refuse a breath test in Utah?
Refusing results in an 18-month license suspension. The refusal can also be used against you in court as evidence of guilt.
Does Utah have a DUI education program?
Yes. Courts require drug and alcohol assessment and may mandate education or treatment programs. The 24/7 Sobriety Program is also available as an alternative to jail for some offenders.
Final Thoughts
Utah’s DUI laws are among the toughest in the nation. The 0.05% BAC limit, strict penalties for first-time offenders, and the new 2026 interdicted person rule all point in one direction: Utah is serious about keeping impaired drivers off the road.
Now you know the basics. If you’re ever facing a DUI charge in Utah, get a lawyer quickly and request your DLD hearing within 10 days. When in doubt, don’t drive after drinking. It’s not worth it.
