There is no such thing as "the" under-21 alcohol limit. There are fifty of them, they are written in incompatible units, and the difference between two neighbouring states is not a rounding error — it is the difference between a thirty-day suspension and a year off the road for the same reading.
Most pages on this subject open with a definition of zero tolerance and then hand you a national average. This one opens with the statutes, because the statutes are where the disagreement is. Six of them are set out below in their own words, with the sanction each one attaches, and at least one of them ends somewhere no commercial page will tell you it ends: with no filing requirement at all.
If the filing itself is new to you, start with what an SR-22 actually is — it is a certificate an insurer files with a state agency, not a kind of policy, and whether one follows a teenage alcohol case is a question of state law rather than of insurance.
Six states, six different numbers for the same act
Every figure and every phrase in this table was read in the cited source on 2 September 2026. Where a cell says the source does not settle something, that is what it means.
| State |
What the statute prohibits, in its words |
Sanction the same law attaches |
Source |
| Minnesota |
Driving "while consuming alcoholic beverages, or after having consumed alcoholic beverages while there is physical evidence of the consumption present in the person's body" — no number at all |
"the commissioner shall suspend the person's driver's license or operating privileges for 30 days", or 180 days on a repeat |
Minn. Stat. § 169A.33, subds. 2 and 4 |
| California |
Driving with 0.01 percent or greater, "as measured by a preliminary alcohol screening test", and separately 0.05 percent as a criminal offence |
Administrative suspension is triggered by § 13353.2(a)(2); the length is set elsewhere and is not verified on this page |
Cal. Veh. Code § 23136, § 23140, § 13353.2 |
| Iowa |
Operating "while having an alcohol concentration, as defined under section 321J.1, of .02 or more" |
60 days' revocation with no previous revocation, 90 days with one |
Iowa Code §§ 321J.2A(1), 321J.12(5) |
| Florida |
"it is unlawful for a person under the age of 21 who has a blood-alcohol or breath-alcohol level of 0.02 or higher to drive" |
6 months first time, 1 year on a second; at 0.05 the suspension runs until a licensed substance abuse course is completed |
Fla. Stat. § 322.2616 |
| New York |
".02 of one per centum or more but not more than .07 of one per centum by weight of alcohol" |
"Six months" suspension for a first finding; one year or until 21, "whichever is the greater period of time", after a prior finding |
N.Y. Veh. & Traf. Law §§ 1192-a, 1193(2)(a)(2), 1193(2)(b)(7) |
| Virginia |
"0.02 percent or more by weight by volume or 0.02 grams or more per 210 liters of breath but less than 0.08" |
Class 1 misdemeanour; licence forfeited "one year from the date of conviction", plus a $500 minimum fine or 50 hours of community service |
Va. Code § 18.2-266.1 |
Built by us on 2026-09-02 from the linked statutory text. No comparison-site figures were used.
Two things come out of that table that none of the six sources says on its own.
The spread in sanction is much wider than the spread in threshold. Five of the six states cluster at .02 or below; the punishment for crossing it runs from 30 days in Minnesota to a full year in Virginia — a twelvefold difference for what is, on the numbers, close to the same conduct. Anyone reasoning from "my state has zero tolerance, so I know what happens next" has the wrong half of the rule.
Only two of the six express the threshold as a criminal offence in the same breath. Virginia's § 18.2-266.1 is a Class 1 misdemeanour and Washington's RCW 46.61.503, which prohibits "an alcohol concentration of at least 0.02 but less than the concentration specified in RCW 46.61.502", says flatly that a violation "is a misdemeanor". Minnesota's § 169A.33 is a misdemeanour too. Elsewhere the primary consequence is administrative. That distinction decides whether a defence lawyer is the right first call, and it is not visible from the BAC number.
New York writes the clearest ladder — and has no filing to hang it on
New York is worth reading even if you do not live there, because it is the state that separates the concepts most carefully. VTL § 1192 sets out five distinct adult offences in five subdivisions: driving while ability impaired by alcohol (subd. 1), the .08 per se offence (subd. 2), aggravated DWI at .18 (subd. 2-a), driving while intoxicated (subd. 3), and ability impaired by drugs (subd. 4). Most states blur several of those into one charge.
Then, separately, VTL § 1192-a builds an entirely different regime for people under 21. It sets the window at ".02 of one per centum or more but not more than .07 of one per centum by weight of alcohol" — deliberately stopping below the adult per se line — and it says something that no summary of "underage DUI" ever repeats:
"a finding that a person under the age of twenty-one operated a motor vehicle after having consumed alcohol in violation of this section is not a judgment of conviction for a crime or any other offense."
Not a conviction. Not an offence. A finding, made administratively under VTL § 1194-a, which nonetheless carries a civil penalty: a person suspended or revoked under that section "shall also be liable for a civil penalty in the amount of one hundred twenty-five dollars" (§ 1194-a(2)). The licence consequences sit in VTL § 1193 — "Six months" under § 1193(2)(a)(2) for a first finding, and under § 1193(2)(b)(7) "One year or until the holder reaches the age of twenty-one, whichever is the greater period of time" where there was a previous one. That last clause is the sharpest thing in the whole subject: for a 17-year-old, "until you turn 21" is not a sentence, it is four years.
And here is the part that makes New York the useful counter-example rather than the template. New York does not use SR-22 filings at all — it abolished proof of financial responsibility in 1957 and replaced it with a per-day lapse penalty. So the state with the most carefully drafted under-21 alcohol statute in the country attaches no certificate to it. A page that tells you an underage DUI "means an SR-22" has not checked which state it is talking about; the states that do not use the filing are more numerous than the marketing suggests.
Iowa: where the zero-tolerance revocation carries no filing
Iowa is the case that can be traced end to end in one statute book, and the ending is not what the industry says.
Iowa Code § 321J.2A(1) sets the rule: "A person who is under the age of twenty-one shall not operate a motor vehicle while having an alcohol concentration, as defined under section 321J.1, of .02 or more." The revocation length is in § 321J.12(5) — "sixty days if the person has had no previous revocation under this chapter, and for a period of ninety days if the person has had a previous revocation under this chapter". For scale, the adult test-result revocation in § 321J.12(1)(a) is 180 days. Iowa punishes the lower threshold with the shorter revocation, which is the opposite of the intuition that underage cases are treated more harshly.
Now the filing. Iowa Code § 321A.17 is the section that makes proof of financial responsibility follow a revocation. Its subsection 4 carves out a list of exceptions, and one of the entries is this:
"following a period of revocation pursuant to a court order issued under section 321J.2A, is not required to maintain proof of financial responsibility under this section."
Read that against § 321J.2A(1), which also says that if the driver is convicted of the criminal offence in § 321J.2, "the revocation imposed under this section shall be superseded by any revocation imposed as a result of the conviction." Those two sentences together describe a fork that decides whether a filing exists: the zero-tolerance route named in § 321A.17(4) is exempt, and the criminal OWI route that supersedes it is not. We have not found a commercial page that mentions the exemption at all. If your case is in Iowa, that subsection number — § 321A.17(4) — is the one to put in front of whoever tells you a filing is required, and the Iowa page sets out the rest of that state's mechanics.
The caution that goes with it: the exemption as written is tied to a revocation "pursuant to a court order issued under section 321J.2A", while § 321J.2A(1) describes revocation by the department. Whether an administrative revocation reaches the exemption is a question for the Iowa DOT, not for this page, and it is listed below as unverified.
Two doors that close quietly: graduated licensing and hardship licences
The suspension is the visible consequence. Two others are not, and both hit under-21 drivers specifically.
The graduated licence clock restarts. Iowa's § 321.180B governs licences for 14- to 17-year-olds, and its subsection 3(a) says a person holding an intermediate licence who is convicted of a moving traffic violation "shall not be issued a full driver's license until the person has completed the remedial driver improvement action and has been accident and violation free continuously for the twelve-month period immediately preceding the application for a full driver's license." A twelve-month clean stretch, restarting from the violation — which for a 16-year-old can outlast the 60-day revocation by ten months. The revocation ends and the restriction does not.
The hardship licence, where one exists, is closed to exactly this group. Alabama runs the clearest example. Its hardship driver licence is a limited privilege for people who cannot otherwise get to work, church, school or medical appointments. ALEA's own hardship licence FAQ states the exclusion without qualification:
"A person who has been adjudicated or convicted of DUI under Alabama Code Section 32-5A-191 is not eligible to apply for a hardship license."
Alabama's under-21 rule sits at § 32-5A-191(b) — inside the very section the exclusion names. So on the face of the two documents, the relief designed for people who have lost their licence and cannot get to school is unavailable to the teenager who lost it under the state's own underage subsection. That reading is ours, and it is the one we would want tested before relying on it; whether ALEA treats a first § 32-5A-191(b) disposition as a "conviction of DUI" for this purpose is not settled by the FAQ. The same FAQ notes a hardship licence "shall have an initial validity period of one year", renewable for up to three more. The wider Alabama picture is on its own page.
Which policy actually carries the filing
Where a filing does follow, the family question arrives immediately, and it has a technical answer that is easy to get wrong.
Three structures exist: adding the requirement to the household policy, excluding the young driver from the household policy, or writing a separate policy in the young driver's name. Which of them an insurer offers is the insurer's decision, and we publish no premium figures for any of them — no insurer quotes a rate for an individual record, and an average built from other people's records is not a price for yours.
The technical point is the exclusion. A named-driver exclusion removes coverage for that driver on that policy. A certificate of financial responsibility certifies that a driver is covered. Those two things cannot be true at once, so an exclusion cannot carry the filing — it has to be paired with a policy of the young driver's own. Ask the insurer to confirm in writing which policy the certificate is filed against, and ask what happens at renewal, because the structure that quotes lowest in the first week is not necessarily the one that stays lowest as the violation ages. The general age question is covered in SR-22 insurance for drivers under 25, and the mechanics that apply to any alcohol-related filing are in SR-22 after a DUI.
What I could not verify
The length of California's under-21 administrative suspension. Cal. Veh. Code § 13353.2(a)(2) states the trigger — "The person was under 21 years of age and had a blood-alcohol concentration of 0.01 percent or greater, as measured by a preliminary alcohol screening test, or other chemical test." The duration lives in § 13353.3, and leginfo returned a version-selection page rather than the text on 2 September 2026. It is left blank in the table rather than filled from a secondary source.
Whether Iowa's § 321A.17(4) exemption reaches a departmental revocation. The exemption is written for a revocation "pursuant to a court order issued under section 321J.2A"; § 321J.2A(1) describes revocation by the department. The Iowa DOT is the body that can answer this.
Whether Alabama treats a first § 32-5A-191(b) disposition as a DUI conviction for hardship purposes. The ALEA FAQ names the section, not the subsection. Alabama publishes its code through a search application with no stable per-section address, so § 32-5A-191(b) is cited here by number, not by link.
Every state not in the table. Six statutes were read. The other forty-four were not, and none of them is described here.
Frequently Asked Questions
What alcohol level triggers an underage DUI?
It depends entirely on the state, and the range is wider than most summaries admit. Minnesota sets no number at all — Minn. Stat. § 169A.33, subd. 2 makes it a crime to drive "after having consumed alcoholic beverages while there is physical evidence of the consumption present in the person's body". California uses 0.01 percent measured by a preliminary alcohol screening test (Cal. Veh. Code § 23136). Iowa, Florida, New York, Virginia and Washington all use .02, with New York capping its under-21 provision at .07 so it stops below the adult per se line. Read your own state's section and check the reading on the notice against it.
Does an underage alcohol offence always mean an SR-22?
No, and two of the states above prove it. New York abolished proof of financial responsibility in 1957 and uses a per-day lapse penalty instead, so nothing is filed there. Iowa exempts the zero-tolerance route by name: Iowa Code § 321A.17(4) says a person applying for a licence "following a period of revocation pursuant to a court order issued under section 321J.2A, is not required to maintain proof of financial responsibility under this section." A criminal OWI conviction in Iowa is a different matter, because § 321J.2A(1) makes the criminal revocation supersede the administrative one.
Is a zero-tolerance finding a criminal conviction?
Not everywhere, and New York says so in terms: VTL § 1192-a provides that a finding under it "is not a judgment of conviction for a crime or any other offense". It still costs six months of driving under VTL § 1193(2)(a)(2) and a $125 civil penalty under § 1194-a(2). Elsewhere it is criminal — Virginia's § 18.2-266.1 is a Class 1 misdemeanour, and both Washington's RCW 46.61.503 and Minnesota's § 169A.33 make it a misdemeanour. Whether a lawyer is the right first call turns on that distinction, not on the BAC figure.
How long does a teenager lose their licence?
For a first offence in the six states read here: 30 days in Minnesota, 60 days in Iowa, six months in Florida and New York, and one year from the date of conviction in Virginia. Repeats escalate sharply — New York's VTL § 1193(2)(b)(7) imposes "One year or until the holder reaches the age of twenty-one, whichever is the greater period of time", which for a 17-year-old means four years rather than one. Iowa goes from 60 to 90 days; Florida and Minnesota both go to a year and 180 days respectively.
Can a young driver get a hardship or restricted licence in the meantime?
Often not, and Alabama is the clearest case against it. ALEA's hardship licence FAQ says "A person who has been adjudicated or convicted of DUI under Alabama Code Section 32-5A-191 is not eligible to apply for a hardship license" — and § 32-5A-191(b) is Alabama's own under-21 subsection. There is also a second restriction that survives the suspension: Iowa Code § 321.180B(3)(a) blocks a full licence until the driver has been "accident and violation free continuously for the twelve-month period immediately preceding the application", which can run months past the end of the revocation itself.
