DUI Probation in California: Rules, Costs, and Violations

DUI probation in California lasts three to five years and replaces most of a jail sentence with a long list of conditions you have to meet: no driving with any measurable alcohol in your system, mandatory chemical testing if you’re stopped again, no new criminal convictions, completion of a state-licensed DUI education program, payment of fines and any restitution, and, in most cases, an ignition interlock device on your car. Break any of those, and the judge can send you to jail for the sentence you originally avoided.

How Long Probation Lasts and Which Kind You Get

Every DUI probation term in California falls between three and five years, whether it’s your first conviction or your fourth.¹ Where the court sets the term inside that range depends on your BAC, whether anyone was hurt, and your prior record. First offenses often land at three years. Second and third offenses within ten years frequently draw the full five.

Most misdemeanor DUI cases result in summary probation, sometimes called informal or court probation. You don’t check in with a probation officer. You complete each condition on your own and prove compliance to the court at review hearings. Miss a payment, skip DUI classes, or pick up a new arrest, and the court finds out at the next hearing or through a records check.

Formal probation is reserved for felony DUI cases, typically a fourth conviction within ten years or a DUI that caused injury. You report to a county probation officer who can require testing, visit your home, and file a violation report if you fall out of compliance. You also need permission before leaving the state.

The Rules You Must Follow

California law sets four baseline conditions that apply to every DUI probation term. The court can add more, but these four are non-negotiable:¹

Zero-tolerance driving. You cannot drive with a BAC of 0.01% or higher, far below the standard 0.08% limit.
Chemical testing on demand. If you’re arrested on suspicion of a new DUI, you must submit to a blood, breath, or urine test. Refusing is itself a violation.
No new criminal offenses. Any criminal conviction during probation counts, not just another DUI.
A minimum term of three years.

The zero-tolerance rule is the one that catches people off guard. At 0.01%, a single drink can put you over. If an officer lawfully detains you on suspicion of violating it, California law treats you as having already consented to a preliminary alcohol screening test.² Refusing that roadside test triggers a separate one-to-three-year license suspension on top of everything else.

What You’ll Pay

The base court fine for a DUI conviction is $390 to $1,000.³ That number is misleading because California adds a stack of penalty assessments and fees on top of it, roughly quadrupling the bill. A $390 base fine typically balloons to around $1,800 to $2,000. A $1,000 base fine can push past $4,000.⁴ The same base range applies to second, third, and fourth offenses.

The court also orders restitution to anyone harmed by the offense — the actual cost of any damaged car, injured pedestrian, or property loss. On top of that, the judge may impose a suspended probation-revocation fine of $100 to $1,000 that only comes due if you violate probation.⁴

Before the DMV will give your license back, you’ll also need to file an SR-22 certificate of financial responsibility, which is your insurer’s proof that you carry at least the state-minimum liability coverage.⁵ You have to keep it in place for three years. If the policy lapses even briefly, the insurer tells the DMV and your license is suspended again. Premiums usually jump because carriers treat the SR-22 as a high-risk flag.

The DUI Education Program

Every DUI probationer has to enroll in and complete a state-licensed alcohol and drug education program. Length depends on your offense and BAC:⁶

First offense with a BAC under 0.20%: a three-month program of at least 30 hours.⁷
First offense with a BAC of 0.20% or higher, or a test refusal: a nine-month program of at least 60 hours.⁷
Second offense: an 18-month or 30-month multiple-offender program.⁸
Third or later offense: at least 18 months, with a 30-month option in counties that offer it.⁶

You pay for the program yourself; fees vary by provider and county. Programs must accommodate lower-income participants. Don’t drag your feet on enrollment — the DMV will not reinstate your license until it receives proof the program is finished, so any delay extends the time you can’t legally drive.

Driving During Probation

A DUI triggers two separate license actions on overlapping tracks: an administrative suspension from the DMV and a conviction-based suspension from the court. For a first offense, the DMV imposes a four-month administrative suspension if your chemical test showed a BAC of 0.08% or higher. You have ten days from the arrest date to request a DMV hearing to challenge it. Miss that window and the suspension takes effect automatically.⁹

The court adds a six-month suspension on conviction for a first offense, or ten months if your BAC was above 0.20%.⁵ You don’t have to sit out the whole period. Two paths to a restricted license exist. If you install an ignition interlock device, you can apply immediately for a restricted license that lets you drive anywhere, anytime, with proof of SR-22 insurance, DUI program enrollment, and IID installation. Without an IID, you can apply after 30 days for a restricted license limited to driving to and from work and your DUI program, and that restriction lasts 12 months.

Ignition Interlock Device

California’s statewide IID program, which runs through December 31, 2032, sets mandatory installation periods based on prior DUI convictions within ten years:¹⁰

First offense, no injury: not mandatory, though the court can order up to six months and many drivers install one voluntarily to get an unrestricted license sooner.
First offense with injury: one year.
Second offense, no injury: one year. Second with injury: two years.
Third offense, no injury: two years. Third with injury: three years.
One or more prior felony DUI convictions: three years, or four with injury.

The device is wired to the ignition. You blow into it before starting the car, and it won’t start if it detects alcohol. It also prompts rolling retests while you drive, and failed or missed tests are logged. You pay for installation, monthly leasing, and calibration.¹⁰

What Happens If You Violate Probation

A new arrest, a missed DUI class, an unpaid fine, or a failed IID breath test can all trigger a probation violation hearing. The judge doesn’t need proof beyond a reasonable doubt. The standard is a preponderance of the evidence, meaning the judge only needs to think it’s more likely than not that you broke a condition.

If the court finds a violation, the response is up to the judge. The harshest option is revoking probation entirely and imposing the suspended jail sentence — up to six months for a first offense³ and up to a year for a second.¹¹ Short of full revocation, the judge can extend the probation term, add stricter conditions like community service or additional jail, or order a longer DUI program. What the violation was matters. A missed payment usually draws a different response than a new DUI arrest.

Getting Off Probation Early

You don’t have to serve every day of a three-to-five-year term if you’ve been fully compliant. California law lets you petition the court for early termination when your conduct justifies it.¹² In practice, most courts want to see the DUI program finished, all fines and restitution paid, any jail time served, and at least 18 months to two years of the term behind you.

The prosecutor gets notice and can oppose, and any victim who asked for notification is told. If you still owe restitution, the prosecutor will almost certainly ask the court to hold the hearing until it’s paid. There’s no guarantee, but for someone who’s checked every box, early termination is a realistic option.

Expungement After You Finish

Once probation ends, whether on schedule or through early termination, you can petition to dismiss the conviction under Penal Code 1203.4. If the judge grants it, you withdraw your guilty plea and the case is dismissed.¹³ Expungement for a DUI is discretionary, not automatic, and the judge weighs your compliance and conduct since the conviction.

The benefits are real for employment and professional licensing, but the limits matter. A dismissed DUI still counts as a prior if you’re charged with another DUI later. You still have to disclose it when applying for public office, certain state licenses, or contracts with the California State Lottery Commission.¹³ It doesn’t restore gun rights, and it doesn’t clear your DMV record.

If You Hold a Commercial Driver’s License

A DUI hits CDL holders harder than California penalties alone. Federal law imposes separate disqualification periods that apply nationwide:¹⁴ a first DUI in a commercial vehicle disqualifies you for at least one year, three years if you were hauling hazardous materials. A second DUI in any vehicle is a lifetime disqualification, though federal regulations allow reinstatement after a minimum of ten years. The federal BAC threshold for commercial drivers is 0.04%, half the standard limit, and a DUI in your personal vehicle still triggers the one-year CDL disqualification.

Traveling to Canada

Probation itself can restrict travel — on formal probation, leaving the state or country without your officer’s approval is a violation. Beyond that, the conviction itself makes Canada a common problem even for people on summary probation. Canadian immigration law treats impaired driving as a serious offense, and a single misdemeanor DUI can make you criminally inadmissible at the border.¹⁵ You may be able to enter with a Temporary Resident Permit, or apply for Criminal Rehabilitation once at least five years have passed since you finished the entire sentence, including probation and fines. Until then, the decision is up to the border officer.

1
California Legislative Information. California Vehicle Code 23600
2
California Legislative Information. California Vehicle Code 23154
3
California Legislative Information. California Vehicle Code 23536
4
Superior Court of California, County of Alameda. Misdemeanor Plea Attachment DUI Penalties
5
California DMV. DUI First Offenders Alcohol Involved Non-Injury
6
Department of Health Care Services. California Driving-Under-the-Influence Programs
7
California Legislative Information. California Vehicle Code 23538
8
California Legislative Information. California Vehicle Code 23542
9
California DMV. DUI First Offenders Alcohol Involved Non-Injury
10
California DMV. Statewide Ignition Interlock Device Pilot Program
11
California Legislative Information. California Vehicle Code 23540
12
California Legislative Information. California Penal Code 1203.3
13
California Legislative Information. California Penal Code 1203.4
14
Office of the Law Revision Counsel. 49 USC 31310
15
Government of Canada. Overcome Criminal Convictions