The age of consent in Louisiana is 17. Anyone 17 or older can legally agree to sexual activity under state law; anyone younger generally cannot consent to sex with someone significantly older. Louisiana then splits violations into a misdemeanor and a felony based on how large the age gap is between the two people, with penalties running from a short jail stint and a fine up to ten years in state prison. Separate rules cover sex between school staff and students, images of anyone under 18, and conduct that crosses state lines.
How the Age Gap Decides the Charge
Two statutes do the work. RS 14:80 covers felony carnal knowledge of a juvenile. RS 14:80.1 covers the misdemeanor version. Both apply when someone 17 or older has consensual intercourse with someone aged 13 through 16. What determines which statute you fall under is the age difference.
Under RS 14:80, the offense is a felony when the age difference is four years or greater. A 21-year-old with a 16-year-old is a felony case because the five-year gap clears the four-year line.1Louisiana State Legislature. Louisiana Code RS 14:80 – Felony Carnal Knowledge of a Juvenile
Under RS 14:80.1, the offense is a misdemeanor when the age difference is greater than two years but less than four. A 19-year-old with a 16-year-old sits inside that band.2Louisiana State Legislature. Louisiana Code RS 14:80.1 – Misdemeanor Carnal Knowledge of a Juvenile
The Narrow Window With No Charge
Because the felony statute needs a gap of four years or more and the misdemeanor needs a gap greater than two years, consensual activity with a gap of two years or less falls outside both. A 17-year-old and a 15-year-old, for example, are not covered by either statute.2Louisiana State Legislature. Louisiana Code RS 14:80.1 – Misdemeanor Carnal Knowledge of a Juvenile This is not a formal “Romeo and Juliet” exemption. It is simply the gap neither statute reaches.
Both statutes also exclude married couples, specifying that the conduct applies only when the victim is not the spouse of the offender.1Louisiana State Legislature. Louisiana Code RS 14:80 – Felony Carnal Knowledge of a Juvenile This exception has little practical reach now that Louisiana’s minimum marriage age is 18 with no exceptions. In nearly all current cases, no one under 17 is lawfully married to begin with.
Penalties for a Carnal Knowledge Conviction
- Misdemeanor carnal knowledge under RS 14:80.1 carries a fine of up to $1,000, up to six months in jail, or both.2Louisiana State Legislature. Louisiana Code RS 14:80.1 – Misdemeanor Carnal Knowledge of a Juvenile
- Felony carnal knowledge under RS 14:80 carries up to ten years in prison, with or without hard labor, plus fines.3Justia. Louisiana Revised Statutes Title 14 RS 14:80 – Felony Carnal Knowledge of a Juvenile
- A second or subsequent misdemeanor offense, or a first offense committed by someone already required to register as a sex offender, is reclassified as a felony under RS 14:80.1Louisiana State Legislature. Louisiana Code RS 14:80 – Felony Carnal Knowledge of a Juvenile
The repeat-offender rule matters. Someone convicted of the misdemeanor who commits the same offense again does not get the misdemeanor penalty a second time. The charge escalates automatically.
Sex Between Educators and Students
Being over 17 does not clear the way if the older person works at the student’s school. RS 14:81.4 criminalizes sexual conduct between an educator and a student aged 17 through 20 enrolled at a school where the educator works, provided the age difference exceeds four years.4Louisiana State Legislature. Louisiana Code RS 14:81.4 – Prohibited Sexual Conduct Between Educator and Student
The statute defines “educator” broadly: administrators, coaches, instructional aides, paraprofessionals, and student aides at both public and private schools. The educator does not need to be the student’s own teacher or coach. Working at the same school is enough. Two defenses that people often reach for are closed off by the statute itself: the student’s consent is not a defense, and not knowing the student’s age is not a defense.4Louisiana State Legislature. Louisiana Code RS 14:81.4 – Prohibited Sexual Conduct Between Educator and Student
“I Thought They Were Older” Is Not a Defense
RS 14:80 and RS 14:80.1 do not contain a statutory mistake-of-age defense, and the educator-student statute expressly rules one out. A person who genuinely believed a 16-year-old was 18 still faces full criminal liability. A fake ID, a dating-app profile that lies about age, or how old someone looks will not shield the older person. Louisiana puts the burden of knowing on the adult.
When a Partner Over 17 Still Cannot Consent
Age is only one part of valid consent. Someone above the age of consent still cannot legally agree to sex if they are incapacitated by alcohol, drugs, or any other substance. Incapacitation is more than ordinary intoxication. It looks like inability to speak coherently, confusion about basic facts, inability to walk without help, or losing consciousness. If the other person cannot make and communicate a clear, voluntary decision, proceeding creates serious criminal exposure. The person initiating sex carries that responsibility even if they have been drinking too.
Sex Offender Registration After a Conviction
A felony carnal knowledge conviction, along with other qualifying sex offenses, triggers mandatory registration under RS 15:542. Adults convicted of a sex offense defined by the statute must register and provide notification in the jurisdiction where they live.5Justia. Louisiana Revised Statutes Title 15 RS 15:542 – Registration of Sex Offenders and Child Predators
Registration is ongoing. Registrants pay an annual fee of $60 to each law enforcement agency where they are required to register.6Louisiana State Legislature. Louisiana Code RS 15:542 – Registration of Sex Offenders and Child Predators Under federal standards in the Sex Offender Registration and Notification Act, registration periods run from 15 years for the lowest tier to life for the most serious offenders.7Federal Register. Registration Requirements Under the Sex Offender Registration and Notification Act
The downstream effects reach beyond the registry itself. Federal law bars anyone subject to a lifetime state sex offender registration requirement from admission to federally assisted housing.8Office of the Law Revision Counsel. 42 USC 13663 – Ineligibility of Dangerous Sex Offenders for Admission to Public Housing Employment options narrow sharply because background checks disclose the registration, and jobs involving children, vulnerable adults, or government clearance are generally closed off.
Images and Interstate Conduct Trigger Federal Law
Louisiana’s statutes are not the only exposure. Federal law treats sexually explicit images of anyone under 18 as serious felonies, even when the person in the image sent it voluntarily. Distributing such images carries a starting penalty of five years and up to 20 years for a first offense. Simple possession carries up to 10 years, doubling to 20 if the image depicts a child under 12. A second possession offense carries a 10-year mandatory minimum.9Office of the Law Revision Counsel. 18 U.S. Code 2252 – Certain Activities Relating to Material Involving the Sexual Exploitation of Minors These rules apply regardless of the relationship between sender and receiver. Two 16-year-olds exchanging images of each other can technically be charged, though prosecutors use discretion in teen-to-teen cases.
Crossing state lines adds another federal layer. Under 18 U.S.C. ยง 2423, transporting anyone under 18 across state lines with intent to engage in sexual activity carries a 10-year mandatory minimum and a maximum of life. Traveling in interstate commerce with intent to engage in sexual conduct with a minor carries up to 30 years, as does traveling abroad as a U.S. citizen for the same purpose or arranging such travel for someone else. Attempt and conspiracy carry the same penalties as a completed offense.10Office of the Law Revision Counsel. 18 U.S. Code 2423 – Transportation of Minors These federal charges can be filed alongside Louisiana state charges, with sentences potentially running consecutively.