How Much Does a Second DUI Cost in California?

A second DUI in California realistically costs about $13,000 to $28,000 or more — noticeably higher than a first offense. The fine is nearly identical to the first; what drives the jump is everything the law now makes mandatory: a 12-month ignition interlock, an 18- or 30-month program instead of a three-month one, and an insurance surcharge that a second offense hits far harder. Here is the honest, statute-verified breakdown.

Key takeaways

• A second DUI in California realistically costs about $13,000–$28,000+, and most of it comes due after court is over.
• The fine barely changes from a first offense. The jump comes from a mandatory 12-month ignition interlock, an 18- or 30-month program, and a steeper multi-year insurance surcharge.
• A prior DUI or wet reckless within ten years is what makes this a “second.” The license suspension is two years — or a restricted license if you install the interlock.
• Reducing the charge or winning the DMV hearing — both decided in the first 10 days — is where the real money is saved.

Why a second DUI costs so much more than the first

Under California Vehicle Code § 23540, a second DUI within ten years carries the same $390–$1,000 base fine as a first. The extra cost is not the fine — it is that the discretionary parts of a first offense become mandatory on a second: the ignition interlock is now required, not optional; the DUI program is six to ten times longer; the license suspension doubles to two years; and insurers treat a second offense as a far higher risk. Those four items, not the courtroom fine, are what a second DUI really costs.

What counts as a prior: the 10-year lookback

California counts prior DUIs on a ten-year lookback. A DUI — or a wet reckless, which is a reduced DUI plea — within ten years of your new offense makes this a second, even if the first was in a different county or state. The window is measured from offense date to offense date, not conviction date, so cases near the ten-year line are worth fighting: if the prior falls outside the window, the whole case drops back to first-offense treatment and most of the added cost disappears with it.

What a second DUI actually costs

Every piece is a range, shown here on one scale. As with a first offense, the two bars that stretch furthest are the ones people never see coming — the multi-year insurance surcharge and the cost of a defense.

The interlock and the longer program are new line items a first offender may never pay. But the insurance surcharge and the defense still decide the total. The rest of this breakdown takes each in turn.

Why a $390 fine turns into nearly $2,000

The number the judge reads out is only the base fine — $390 to $1,000. What you actually pay is that figure plus a stack of mandatory add-ons the law attaches to every conviction: a state penalty assessment under Penal Code § 1464 that nearly matches the fine dollar for dollar, a county assessment, a 20% state surcharge, a court-operations fee, a conviction assessment, and DUI-specific fees. Together they roughly quadruple the base — which is how a $390 fine becomes about $1,900, and a $1,000 fine can top $3,600. The exact multiplier varies by county, and Los Angeles sits at the higher end, so treat these as ranges rather than fixed amounts.

Jail time and the 10-year lookback

A second DUI is a “second” only because a prior DUI or wet reckless falls within a ten-year lookback. On paper the sentence is 90 days to a year, but almost every case is resolved on probation under Vehicle Code § 23542, which sets a mandatory minimum of 96 hours (served as two 48-hour stretches) or 10 days. In Los Angeles, the practical exposure is often served through work-release or electronic monitoring rather than county jail — one of the first things a defense negotiates.

In practice, that mandatory minimum is rarely served in a county-jail cell. Los Angeles courts routinely allow it to be satisfied through Caltrans or community-labor crews, electronic home monitoring, or a SCRAM alcohol-monitoring bracelet — and sometimes weekend or “flex” custody so you keep your job. Which alternative is on the table depends on the courthouse and the judge, and negotiating the least disruptive option is a core part of a second-offense defense.

Your license: a two-year suspension — or an interlock

A second conviction suspends your license for two years under Vehicle Code § 13352(a)(3). The practical alternative is the ignition interlock: installing one lets you keep driving on a restricted license instead of sitting out the suspension. For a second offense the interlock is required for 12 months regardless — so most people install it and drive rather than lose the car entirely. Budget roughly $1,000–$1,800 over the year for installation, the monthly lease, and calibrations.

The device is straightforward — a breath sensor wired to the ignition that requires a clean sample to start the car and occasional rolling retests as you drive. Installation runs roughly $70–$150 and the monthly lease and calibration $60–$100 across the 12-month term. California requires providers to offer income-based discounts — up to about 90% off for CalFresh or Medi-Cal recipients — so the real cost for a low-income driver can be far below the sticker.

The 18- or 30-month DUI program

This is where a second offense quietly gets expensive. A first offender takes a three-month course; a second offender is ordered into the 18-month multiple-offender program — or the 30-month program if the blood-alcohol level was 0.20% or higher, or a chemical test was refused. The longer duration means more sessions, more monthly fees, and more time, typically $1,800–$3,000 in tuition depending on the county-licensed provider.

SR-22 and insurance: the cost that outlasts the case

As with a first DUI, the SR-22 form itself is trivial — a filing your insurer makes to prove you carry coverage. The cost is what happens to the premium, and a second offense is rated as a much higher risk than a first. Expect a steeper increase, carried for the three years the SR-22 is required, commonly totaling $4,500–$9,000 in added premium. For many people it is the single most expensive consequence of the entire case, and it arrives long after court is over.

Two things make the second-offense insurance hit worse than the first. Your prior means insurers no longer treat the DUI as a one-time lapse, and many standard carriers will non-renew you outright, pushing you into the high-risk market where base rates are higher to begin with. California does cap how much a DUI alone can move a rate — which softens the blow compared with other states — but the surcharge still compounds across the full three-year SR-22 window. Shopping the high-risk market aggressively, rather than accepting your current insurer's renewal quote, is often the single most effective way to shrink this line.

What a second-DUI lawyer costs — and why it can save you money

Defense fees for a second offense typically run $3,500 to $15,000 or more, depending on whether the case resolves in a negotiated plea or is contested at trial, and on aggravators like a high BAC or a refusal. The fee is often small next to what it can save: reducing a second DUI to a wet reckless, or winning the DMV hearing, can cut the mandatory jail, shorten the program, and blunt the multi-year insurance surcharge — savings that dwarf the fee.

Can you bring the cost down?

Two levers matter most. First, the DMV hearing — separate from court, and it must be requested within 10 days of arrest — decides the administrative suspension. Second, the criminal charge itself: a reduction to a “wet reckless” avoids the mandatory second-offense minimums, shortens the program, and softens the insurance hit. Both are decided early, which is why the cost of a second DUI is often set in the first two weeks.

Second DUIs in Los Angeles

Where the case is heard shapes the outcome. Los Angeles County DUI cases run through the Metropolitan, Van Nuys, Airport, and other branch courthouses, each with its own tendencies on jail alternatives and program placement, and the DMV side is handled through the local Driver Safety Office. A lawyer who works these courtrooms knows which forum offers work-release over custody and how each handles a second-offense plea — the difference between the low and high ends of the ranges above.

That local knowledge shapes cost in ways no statute captures. The Los Angeles City Attorney and the District Attorney charge and negotiate DUIs differently; some branch courts are more open to a wet-reckless reduction or a stayed sentence than others; and the region's Administrative Per Se hearings run out of local DMV Driver Safety Offices with their own scheduling realities. None of that appears on a competitor's statewide cost page — but it is often what separates a $13,000 outcome from a $28,000 one.

So what is the real total?

Add it up and a second DUI in California realistically runs about $13,000 on the low end — a quick plea, a modest insurance increase — and $28,000 or more when the case is contested, the BAC was high, or there are priors. The fine is a small fraction of that. The mandatory interlock, the longer program, and the insurance surcharge are the real bill, and they are exactly the parts a good defense can shrink.

Probation, bail, and the fees nobody mentions

A second DUI usually comes with three to five years of summary (informal) probation — no probation officer, but any new arrest in that window reopens your exposure. Around it sit the smaller fees that rarely make the headlines: booking and release, the license reissue fee, and the towing and impound costs from the night of the arrest. Individually they are modest; together they quietly add several hundred dollars more to the total.

The costs that outlast the case

Some costs never appear on a court invoice. A second DUI stays on your California driving record for ten years and on your criminal record until it is expunged; it can surface in employment and professional-license background checks; and it sets the baseline for a third offense — which is where felony exposure begins. Those downstream consequences are the real reason a strong defense on the second is usually the cheapest line on the whole list.

Common questions

How much does a second DUI cost in California, all-in?

Realistically about $13,000 to $28,000 or more once the fine and assessments, the mandatory 12-month interlock, the 18- or 30-month program, and the three-year insurance surcharge are added together. The exact figure depends on your BAC, your priors, and whether the case is contested.

Is an ignition interlock mandatory for a second DUI?

Yes. Unlike a first offense — where it is optional — a second DUI requires a 12-month ignition interlock under SB 1046. Installing it also lets you keep driving on a restricted license instead of serving the two-year suspension.

How long is my license suspended for a second DUI?

Two years on a second conviction within ten years, under Vehicle Code § 13352(a)(3). You can typically convert it to a restricted license by installing the required ignition interlock.

Is a second DUI a felony in California?

Not on its own. A second DUI is a misdemeanor unless someone was injured or there are other aggravating facts. A DUI generally becomes a felony at the fourth offense in ten years, on a prior felony DUI, or when it causes injury.

How much does a DUI lawyer cost for a second offense?

Typically $3,500 to $15,000 or more, depending on whether the case is pleaded or contested and on aggravators like a high BAC or a chemical-test refusal. The fee is often less than what a charge reduction saves in mandatory penalties and multi-year insurance costs.

How long will my insurance stay high after a second DUI?

The SR-22 must be maintained for three years, and the premium surcharge generally lasts about that long. The DUI itself stays on your California driving record for ten years, and some insurers rate for it longer.

Can a second DUI be reduced to a wet reckless?

Sometimes. A reduction to a wet reckless avoids the mandatory second-offense minimums, shortens the required program, and softens the insurance impact — one of the highest-value outcomes a defense can achieve, which is why it is negotiated early.