An oath turns an ordinary statement into something the law takes very seriously. When a person lies under oath in New Jersey, they can be charged with perjury or false swearing — indictable crimes that carry real penalties and a lasting record. But these charges have specific elements, and not every inaccurate statement under oath is a crime. If you’ve been accused of lying in testimony, an affidavit, or a sworn document, understanding the difference between the two statutes — and the defenses built into them — is the first step.
What the two statutes cover, in plain English
New Jersey doesn’t have one “lying under oath” crime — it has two, and they’re graded differently. N.J.S.A. 2C:28-1 (perjury) is the serious one: a knowingly false statement, made under oath, in an official proceeding, about something that mattered to that proceeding. N.J.S.A. 2C:28-2 (false swearing) is the catch-all: a knowingly false statement under oath that doesn’t meet perjury’s full requirements — the oath is there, but the official-proceeding or materiality piece is missing.
Both statutes share the same core demand: the State must prove the statement was knowingly false. Being wrong under oath is not a crime. Misremembering is not a crime. Interpreting a question differently than the questioner intended is not a crime. The oath raises the stakes of a statement — it doesn’t turn every inaccuracy into a prosecution.
Perjury vs. false swearing
New Jersey separates two related offenses:
- Perjury (N.J.S.A. 2C:28-1) — making a false statement under oath in an official proceeding, where the statement is material to that proceeding. Perjury is generally a third-degree crime.
- False swearing (N.J.S.A. 2C:28-2) — making a false statement under oath outside the materiality-and-official-proceeding requirements of perjury — for example, in certain sworn statements or certifications. False swearing is generally a fourth-degree crime.
The practical difference between the two charges
Think of it this way: perjury protects proceedings — trials, hearings, grand juries — from lies that could change their outcome. False swearing protects the oath itself — the sworn certifications and affidavits that courts and agencies rely on every day, even when no live proceeding is at stake.
That’s why the grading differs. A material lie in an official proceeding can send a case in the wrong direction, which is why perjury is graded third-degree. A false statement in a sworn document that never affected any proceeding is still a crime, but a lesser one — fourth-degree false swearing. In practice, this means the fight in many of these cases is over which statute applies: if the State can’t establish materiality or an official proceeding, a perjury charge shouldn’t stand, and the exposure changes significantly.
Where these charges arise
- Testimony in court, depositions, or hearings.
- Sworn affidavits and certifications filed with a court or government agency.
- Official applications and documents signed under penalty of perjury.
- Grand jury testimony.
They often arise out of other proceedings — a family case, a civil suit, a criminal matter — where a party is later accused of having lied in their testimony or paperwork. A contested divorce certification, conflicting accounts in a simple assault case, an affidavit in a landlord dispute — when the underlying fight turns bitter, one side sometimes accuses the other of lying under oath. That’s why these charges rarely arrive alone: there’s almost always a first case, and the perjury allegation is the second act.
How the State tries to prove a perjury case
A perjury prosecution is built on comparison. The State lines up what you said under oath against something else — other testimony, documents, an earlier statement — and argues the sworn version was knowingly false. That method has built-in weaknesses the defense can attack: the exact wording of the question, the exact wording of the answer, and what you actually knew and believed at the moment you spoke.
Transcripts flatten everything. They don’t capture a confusing compound question, a witness answering the question they thought was asked, or an honest reconstruction of events that later proved wrong. A careful defense goes back to the precise words — because in a perjury case, the precise words are the whole case.
Defenses built into the statute
Perjury and false swearing have specific defenses and limitations the law recognizes:
- Lack of materiality — for perjury, that the statement couldn’t have affected the proceeding.
- No knowing falsehood — that the statement was a mistake, a matter of interpretation, or honest belief.
- Retraction — New Jersey law recognizes a defense where the person retracts the false statement in the course of the same proceeding before it substantially affects things.
- Ambiguity — where the question or answer was genuinely unclear.
The retraction defense deserves emphasis, because it reflects what the law actually cares about: protecting proceedings from being corrupted, not punishing every human failure under pressure. A witness who corrects a false statement in the same proceeding, before it does real damage, has undone the harm the statute exists to prevent — and the law recognizes that.
Why these cases need careful defense
Perjury charges often layer on top of another case and can carry outsized consequences for professionals and anyone whose record matters. As an indictable offense, the stakes mirror those in disorderly persons vs. indictable matters, and for eligible defendants, diversion like Pretrial Intervention may be available. These charges also frequently appear alongside false reports and forgery where documents are involved.
One important distinction: a false statement to a police officer, without an oath, is not perjury — that conduct falls under the separate false-reports statute. If your case involves both unsworn statements to investigators and sworn testimony or documents, you may be facing charges under more than one statute, and the defense has to be coordinated across all of them.
Accused of lying under oath? Don’t assume it’s open-and-shut
Materiality, knowledge, and the precise wording all matter, and the defenses are real. These are hard cases to prove — which is exactly why the worst thing you can do is try to explain your way out of it before you’ve talked to a New Jersey criminal defense lawyer. If you’re facing a perjury or false-swearing charge anywhere in New Jersey, it’s worth a free, confidential call to talk it through: 908-692-7745, 24/7. We’ll go through the exact statements at issue, what the State can actually prove, and every defense the statute gives you.