DWI / DUI
The penalties for underage DUI in New Jersey
For drivers under 21, the legal limit isn't 0.08. It's effectively zero: a single drink can put a young driver over New Jersey's 0.01% underage threshold. Here's how the "baby DUI" statute works, and where the real exposure starts.
The Statute
The under-21 offense: N.J.S.A. 39:4-50.14
A driver under 21 with a BAC of 0.01% or more, but under 0.08%, commits the underage DWI offense. A conviction carries:
- License forfeiture or postponement of 30 to 90 days. For a young driver who doesn't yet have a basic license, the "postponement" side matters: the waiting period pushes back when they can get one.
- 15 to 30 days of community service.
- Alcohol education and highway safety program requirements, satisfied through the Intoxicated Driver Resource Center or an approved program, with the associated fees.
For a standalone first or later violation of 39:4-50.14, that section itself specifies no jail, fine or ignition-interlock term. That does not eliminate consequences imposed by another applicable law, because subsection .14 expressly makes its penalties additional. The State still must prove the required age, operation and BAC elements.
The 30-to-90-day period begins on the conviction date or the date the person becomes eligible to obtain a license, whichever is later. A 0.01% reading is included; 0.08% is excluded from this particular BAC range and falls within the adult per-se theory.
The under-21 remedy is additive. N.J.S.A. 39:4-50.14 does not replace another applicable DWI charge. An under-21 driver may also face N.J.S.A. 39:4-50 when the State claims observational impairment, even with a reading below 0.08%, or when another adult-DWI theory applies. A breath number below 0.08% is therefore not an automatic defense to observational DWI.
Permit and probationary consequences are different systems. For an examination-permit holder, N.J.S.A. 39:3-13(h) directs MVC to suspend the permit for 90 days and permits restoration after the holder satisfactorily completes a remedial training course of at least four hours; a qualifying later conviction after that course triggers a 90-day postponement of basic-license eligibility. N.J.S.A. 39:3-13.4(d) and (e) govern probationary licenses: subsection (d) requires the same minimum four-hour remedial course for a first listed event, while subsection (e) requires MVC, without discretion or a hearing, to suspend the probationary license for three months and postpone basic-license eligibility for an equivalent period after a second or subsequent listed violation. These are MVC licensing consequences in addition to the court sentence, and the credential held on the offense date matters.
The Cliff
At 0.08%, the training wheels come off
N.J.S.A. 39:4-50.14 covers a BAC of 0.01% or more but below 0.08%. At 0.08% or higher, N.J.S.A. 39:4-50 may apply, but the licensing consequence depends on the adult tier and theory. For a first alcohol offense from 0.08% to under 0.15%, forfeiture lasts until IID installation, while lawful operation also requires MVC notation and licensing or restoration eligibility. At 0.15% or higher, the statute imposes a fixed three-month forfeiture following installation, with the IID required during that period and for 12 to 15 months after restoration. P.L.2025, c.41 separately allows qualifying offenses occurring on or after April 3, 2025 and before January 1, 2029 to earn one forfeiture day for every two compliant IID days after conviction; serious-bodily-injury incidents, drug DWI and commercial-motor-vehicle controlled-substance DWI are excluded, and other sentencing and post-restoration obligations remain. For the complete adult framework, see the DWI defense page and interlock guide.
A reading below 0.08% can support the specific under-21 per-se charge, and it does not foreclose a separate observational DWI theory. Review therefore starts with the stop, age and operation evidence, the test foundation and timing, and the observations supporting each charge; no outcome follows automatically from a low reading.
What Changed in 2021
The "underage drinking charge" mostly doesn't exist anymore
Under N.J.S.A. 2C:33-15, underage possession or consumption now uses graduated written warnings rather than the former criminal penalty. If the person is under 18, the statute requires parent or guardian notification even for the first violation. Later violations add the statute’s assessment or service-referral steps. That separate warning process does not replace a driving charge under 39:4-50.14 or 39:4-50.
So for an under-21 driver stopped after drinking, the driving offense is the case. Passengers' open containers, fake IDs, and providing alcohol to minors remain separate issues with real consequences, but the reflexive stacking of "DUI plus underage drinking" is history.
One more note for parents: if the matter somehow involves juvenile delinquency charges beyond the traffic case, that's a different court and a different process; see our juvenile defense page.
Common Questions
Underage DUI questions, answered
My kid blew under 0.08. How is that still a DUI?
N.J.S.A. 39:4-50.14 covers a driver under the legal drinking age with a BAC of 0.01% or more but less than 0.08%. It requires 30 to 90 days of driving-privilege forfeiture or licensing postponement, 15 to 30 days of community service, and IDRC or prescribed alcohol-education and highway-safety requirements. The 30-to-90-day period begins on the conviction date or the date the person becomes eligible for a license, whichever is later.
What if an underage driver blows 0.08 or higher?
N.J.S.A. 39:4-50 may then apply, with the adult tier determined by the BAC or other charged theory. A first alcohol DWI at 0.15% or higher has a fixed three-month forfeiture following IID installation, unlike the lower alcohol tiers. Operation also requires MVC notation and licensing eligibility. Temporary P.L.2025, c.41 credit may alter an eligible baseline forfeiture, but it has offense-date, sunset and exclusion rules and does not erase the remaining sentence.
Will this give my child a criminal record?
No. Like adult DWI, the underage offense is a motor-vehicle violation, not a crime, so there is no criminal record. It does go on the driving record, and insurers see it, which is its own long-tail expense for a young driver.
Can they also be charged for underage drinking on top of the DUI?
Not the way it used to work. Since the 2021 marijuana-reform laws amended N.J.S.A. 2C:33-15, underage possession or consumption of alcohol draws a graduated written warning, not a charge — no fine and no license loss. The driving offense is the real legal exposure now.
A young driver's record is worth protecting early.
The applicable charge depends on the exact BAC range, observational evidence, age and credential held. Call with the summons and test information so those separate consequences can be reviewed.
Sources checked September 5, 2026: New Jersey Legislature statute archive; P.L.2003, c.314; P.L.2023, c.335; Current New Jersey MVC underage-DUI and remedial-program information. Laws and court instructions can change; this page is general information, not legal advice for a specific case.