The age of consent in California is 18. Any sexual intercourse with someone under that age is a crime under Penal Code 261.5, no matter how willing the minor was, how old they looked, or what they said about their age.1California Legislative Information. California Penal Code PEN 261.5 – Unlawful Sexual Intercourse The penalties climb with the age gap between the two people, from a misdemeanor with up to six months in county jail to a felony carrying multiple years of incarceration, and as of January 1, 2026, some convictions now require sex offender registration.
What the Law Actually Says
Penal Code 261.5 defines a “minor” as anyone under 18 and an “adult” as anyone 18 or older, and it makes intercourse with a minor a crime whether the other person is an adult or another minor. A 17-year-old who has sex with a 15-year-old has committed the offense just as a 30-year-old would, though the penalties are very different.
California’s general definition of consent, in Penal Code 261.6, describes voluntary cooperation through free will.2California Legislative Information. California Penal Code 261.6 – Definition of Consent That definition does not apply here. Under 261.5, anyone under 18 is treated as legally incapable of consenting to intercourse. The minor’s willingness is not a defense.
Penalties by Age Gap
The statute sorts offenses into three tiers based on the difference in age between the two people.
Three Years or Less Apart
When the two people are within three years of each other, the offense is always a misdemeanor. The statute does not set a specific term, so the default misdemeanor punishment applies: up to six months in county jail, a fine of up to $1,000, or both.3California Legislative Information. California Penal Code PEN 19 – Misdemeanor Punishment A conviction still creates a criminal record that can affect jobs, housing, and school.
More Than Three Years Apart
Once the age gap passes three years, the charge becomes a “wobbler,” meaning prosecutors can file it as either a misdemeanor or a felony. As a misdemeanor, the maximum is one year in county jail. As a felony, sentencing is 16 months, two years, or three years in county jail under Penal Code 1170(h).4California Legislative Information. California Penal Code PEN 1170 – Determinate Sentencing The prior record and the facts of the case usually drive which way it gets charged.
Offender 21 or Older, Minor Under 16
This is the harshest tier. It is still a wobbler, but the felony sentencing range increases to two, three, or four years, while the misdemeanor option remains up to one year in county jail.
Civil Penalties the District Attorney Can Add
Separate from any criminal case, Penal Code 261.5 authorizes the district attorney to pursue civil fines against adult offenders. The amounts scale with the age difference:
- Less than two years older: up to $2,000
- At least two years older: up to $5,000
- At least three years older: up to $10,000
- Offender 21 or older with a minor under 16: up to $25,000
These civil penalties apply only when the offender is 18 or older, and they can be imposed on top of a criminal sentence. A judge can also add a separate fine of up to $70.
Sex Offender Registration After the 2026 Change
A significant shift took effect on January 1, 2026. Under the updated Penal Code 290, felony-level convictions under subdivision (c) or (d) of Section 261.5 now require sex offender registration when the offense occurred on or after that date.5California Legislative Information. California Penal Code 290 – Sex Offender Registration These are the cases where the age gap exceeds three years.
There is an exception. Registration is not required if the offender is no more than 10 years older than the minor, measured by their actual birth dates, and the 261.5 conviction is the person’s only registrable offense. Even then, a court can still order registration under Penal Code 290.006 based on the facts. The close-in-age misdemeanor under subdivision (b) does not trigger registration.
Registration reaches well past the criminal sentence. Registrants face public listing of home and work addresses, residency restrictions during probation or parole, and closed doors in any job involving children or vulnerable people.
The Reasonable Mistake of Age Defense
California is one of the few states that allows a defendant to argue they honestly and reasonably believed the minor was 18 or older. The California Supreme Court recognized this defense in People v. Hernandez, holding that a person who genuinely and reasonably believed their partner was an adult lacks the criminal intent the statute requires.6Justia Law. People v. Hernandez
The defense is narrower than it sounds. The belief has to be both sincere and objectively reasonable, meaning an ordinary person in the same situation would have reached the same conclusion. Courts look at the minor’s appearance, what the minor said about their age, and whether the defendant did anything to check when there was reason to doubt. Taking someone at their word in a situation that called for more is usually not enough. The defense also does not stop charges from being filed; it is an argument for trial.
What People Assume Protects Them, But Doesn’t
There Is No Romeo and Juliet Law in California
Plenty of states have “Romeo and Juliet” laws that carve out close-in-age teen relationships from criminal liability. California does not. Every act of intercourse with a minor is a crime under 261.5, even when both people are teenagers. The statute reduces the charge to a misdemeanor when the two are within three years, and prosecutors often use discretion in teen relationship cases, but no provision grants immunity.
Emancipation Does Not Grant Sexual Consent
Emancipated minors gain a specific list of rights under Family Code 7050: consenting to their own medical care, signing contracts, enrolling in school, and living independently, among others.7California Legislative Information. California Family Code 7050 – Emancipation Effects Sexual consent is not on that list. The California Courts self-help resources say so directly: someone who has sex with an emancipated minor can still be arrested for statutory rape unless the two are legally married.8California Courts Self Help Guide. Emancipation in California
The Spousal Exception
Penal Code 261.5 applies only to intercourse with someone “who is not the spouse of the perpetrator.” Married couples are exempt from this statute. That exception is narrow in practice because California heavily restricts marriage involving minors, requiring both court approval and parental consent for anyone under 18.
Other Sexual Acts Are Covered by Separate Statutes
Section 261.5 covers intercourse only. Other sexual acts with minors fall under different statutes with their own, often harsher, penalties. Oral copulation with a minor is prosecuted under Penal Code 287; when the offender is 21 or older and the minor is under 16 it is always a felony, and when the minor is under 14 and the offender is more than 10 years older the sentence is three, six, or eight years in state prison.9California Legislative Information. California Penal Code PEN 287 – Oral Copulation Lewd acts with a child under 14 fall under Penal Code 288, which is always a felony carrying three, six, or eight years in state prison, rising to five, eight, or ten years if force or fear is involved.10California Legislative Information. California Penal Code PEN 288 – Lewd or Lascivious Act A 288 conviction also triggers sex offender registration without the 10-year age gap exception that 261.5 offers.
Crossing State Lines Can Bring Federal Charges
Transporting a minor across state lines with intent to engage in sexual activity is a separate federal offense under 18 U.S.C. ยง 2423. The federal penalties dwarf the state ones: a mandatory minimum of 10 years in federal prison and a maximum of life.11Office of the Law Revision Counsel. 18 USC 2423 – Transportation of Minors It does not matter what the age of consent is in the destination state. Driving from California to Nevada, where the age of consent is 16, is not a workaround if the person being transported is under 18.
How These Cases Often Come to Light
California’s Child Abuse and Neglect Reporting Act requires a long list of professionals to report suspected child abuse, including sexual abuse. Teachers, school administrators, doctors, nurses, therapists, social workers, law enforcement, childcare workers, and clergy are all mandated reporters.12California Legislative Information. California Penal Code – Child Abuse and Neglect Reporting Act When one of them learns or reasonably suspects that a minor is involved in sexual activity that violates the law, a report is mandatory. Failing to report is itself a crime.
The practical effect is that a minor who confides in a school counselor, a doctor, or a therapist about a sexual relationship can trigger a report, even if the minor sees the relationship as consensual. Confidentiality does not apply in that situation, and the reporting professional cannot agree to keep it quiet.