Perjury Lawyers in Bay Area (PC 118)

A false statement under oath can follow you for the rest of your career. Understanding what prosecutors actually need to prove is the first step toward protecting yourself.

Most people think of perjury as lying on the witness stand during a dramatic courtroom scene. The reality is far broader. Perjury charges in California can stem from a signed declaration in a family law case, a statement on a government application, or testimony during a deposition that turned out to be inaccurate. What makes this charge particularly serious is that it is a straight felony under California law, meaning it can never be reduced to a misdemeanor regardless of the circumstances.

For working professionals in the Bay Area, a perjury accusation threatens more than freedom. It threatens the professional license, the security clearance, the immigration status, and the reputation you have spent years building. The good news is that perjury is one of the most difficult charges for prosecutors to prove. California law builds in protections that do not exist for most other crimes, and the elements required for conviction create real opportunities for a skilled defense team.

Our attorneys at The Nieves Law Firm Criminal Defense Attorneys have defended clients across Alameda County and the greater Bay Area against charges that attack their credibility and their future. If you are facing a perjury investigation or charge, the earlier you bring a defense team into the picture, the more options you will have.

What Perjury Means Under California Law

Penal Code section 118 defines perjury as willfully making a false statement about a material fact while under oath or under penalty of perjury, when the person knows the statement is false.¹ The statute is broader than many people realize. It covers not only courtroom testimony but also written declarations, depositions, affidavits, and any document signed under penalty of perjury where California law authorizes that certification.²

The punishment for perjury is set by Penal Code section 126, which provides a sentence of two, three, or four years in state prison.³ This is not a wobbler offense. Prosecutors cannot file it as a misdemeanor, and a court cannot later reduce it to one. That makes the stakes of a perjury charge fundamentally different from many other non-violent felonies where reduction is a realistic outcome.

How Prosecutors Build a Perjury Case

Under California jury instructions, the prosecution must prove every element beyond a reasonable doubt before a jury can convict.⁴ Each element presents a distinct hurdle, and experienced defense attorneys know where these cases tend to fall apart.

The defendant was under oath or signed under penalty of perjury

The statement must have been made in a context where an oath was lawfully administered or where the person certified the document under penalty of perjury as authorized by California law.⁵ Penal Code section 119 clarifies that “oath” includes an affirmation, and section 120 states that mere irregularities in how the oath was administered do not invalidate the charge.^{6 7} However, if no oath was administered at all, or if the document was not properly certified, the prosecution’s case has a foundational problem.

The statement was willfully made

“Willfully” means the defendant acted on purpose, not by accident or inadvertence.⁸ This is where the line between a deliberate lie and an honest mistake becomes critical. A witness who misremembers a date, confuses details under the pressure of cross-examination, or misunderstands an ambiguous question has not acted willfully, even if the statement turns out to be factually wrong.

The statement was false

The prosecution must prove the statement was actually untrue. This sounds straightforward, but it often is not. Many perjury accusations involve statements that are matters of interpretation, opinion, or degree rather than clear-cut factual claims.

The defendant knew the statement was false

This is the element that makes perjury so difficult to prove. The prosecution must establish that the defendant knew, at the time the statement was made, that it was false.⁹ A genuinely mistaken belief negates this element entirely, even if the belief was unreasonable. Prosecutors cannot simply show that the statement was wrong; they must prove the defendant knew it was wrong and said it anyway.

The statement was material

The false statement must have been relevant to the proceeding and capable of influencing its outcome.¹⁰ A lie about something trivial or collateral, even if deliberate, does not constitute perjury. The statement does not need to have actually changed the outcome. It is enough that it could have.

The Corroboration Rule That Sets Perjury Apart

One of the most important protections in California perjury law is the corroboration requirement under Penal Code section 125.¹¹ This provision states that perjury cannot be proven solely by the contradictory testimony of a single witness. The prosecution must present additional evidence, whether through another witness, documentary evidence, or corroborating circumstances, to establish that the defendant’s statement was false.¹²

This rule exists because perjury accusations can easily become one person’s word against another’s, and the legislature recognized the danger of allowing a felony conviction to rest on that alone. In practice, this means that if the only evidence of falsity is a single witness who says “that’s not what happened,” the charge cannot be sustained as a matter of law.

For defense purposes, the corroboration requirement is a powerful tool. It forces prosecutors to build a case with multiple pieces of evidence, and it gives the defense a clear path to challenge the sufficiency of the evidence at every stage of the proceedings. Our team scrutinizes the prosecution’s corroborating evidence carefully because if it does not meet this statutory threshold, the charge should not survive a motion to dismiss.

Defense Strategies for Perjury Charges

Honest Mistake or Faulty Memory

The most frequently successful defense in perjury cases is that the defendant genuinely believed the statement was true. Memory is imperfect. People forget dates, confuse sequences of events, and recall conversations differently than others who were present. When a client is accused of perjury based on testimony that contradicts other evidence, the real question is whether they knew the statement was false or simply remembered it differently. A client who testifies that a meeting happened on a Tuesday when records show it was a Wednesday has not committed perjury if they honestly believed it was Tuesday.

Ambiguity of the Question

This defense is particularly effective in deposition and cross-examination contexts. If the question was vague, compound, or susceptible to more than one reasonable interpretation, the defendant’s answer may have been truthful under the interpretation they understood. Attorneys drafting deposition questions sometimes phrase them poorly, and a witness who answers based on a reasonable reading of an ambiguous question has not committed perjury. Our team analyzes the transcript carefully to identify questions that were unclear or misleading.

Immateriality

Even a deliberately false statement is not perjury if it was not material to the proceeding. If the false statement concerned a collateral matter that could not have influenced the outcome, the materiality element fails. This defense requires a careful analysis of the underlying proceeding and what issues were actually at stake.

Insufficient Corroboration

As discussed above, Penal Code section 125 requires more than one witness’s contradictory testimony to sustain a perjury charge.¹³ If the prosecution’s evidence of falsity rests primarily on a single witness without meaningful corroboration, this statutory protection can be the basis for dismissal.

Lack of Proper Oath

If the oath was never administered, or the document was not properly designated as one signed under penalty of perjury, the charge lacks a foundational element. While Penal Code section 120 prevents defendants from relying on mere irregularities in oath administration, a complete absence of an oath is a different matter entirely.¹⁴

Recantation

If the defendant corrected the false statement before it substantially affected the proceeding, and before it became apparent that the falsity would be discovered, this may provide a defense or serve as a significant mitigating factor in negotiations with prosecutors.

Duress or Coercion

In some cases, particularly those involving domestic violence situations or gang intimidation, the defendant may have made a false statement because they were afraid to tell the truth. While the proper course would have been to invoke the Fifth Amendment, the circumstances of coercion can serve as a defense or powerful mitigating factor.¹⁵

Perjury Penalties and Sentencing

A conviction under Penal Code section 118 carries a state prison sentence of two, three, or four years.¹⁶ The court has discretion to grant felony probation in appropriate cases, which may include conditions such as community service, fines, and a period of supervised release rather than prison time.

Fines of up to $10,000 may also be imposed. Because perjury is a straight felony, there is no possibility of reduction to a misdemeanor through a Penal Code section 17(b) motion, which limits post-conviction relief options compared to wobbler offenses.

Subornation of perjury, charged under Penal Code section 123 when a person procures another to commit perjury, carries the same penalty range of two, three, or four years.^{17 18}

In the rare and extreme circumstance where perjury leads to the execution of an innocent person, Penal Code section 128 provides for a sentence of life imprisonment.¹⁹

Collateral Consequences Beyond Prison

Professional Licensing

A felony perjury conviction is devastating for licensed professionals. Because perjury is classified as a crime involving moral turpitude, licensing boards for attorneys, physicians, nurses, teachers, accountants, real estate agents, and financial professionals may initiate disciplinary proceedings that can result in suspension or permanent revocation. For Bay Area professionals, where careers in law, technology, healthcare, and finance are common, this consequence often matters more than the prison sentence itself.

Immigration Consequences

Perjury is widely recognized as a crime involving moral turpitude (CIMT) under federal immigration law, which can trigger deportation proceedings, render a person inadmissible to the United States, and create bars to naturalization.²⁰ For the Bay Area’s diverse immigrant communities, this consequence requires immediate attention. Our team works closely with immigration attorneys to understand how a criminal defense strategy will affect a client’s immigration case, and we factor those consequences into every decision.

Firearm Prohibition

As a felony conviction, perjury results in a lifetime prohibition on possessing firearms under both California law (Penal Code section 29800) and federal law.^{21 22}

Credibility and Future Proceedings

Perhaps uniquely damaging for a charge of this nature, a perjury conviction permanently marks a person as someone who lied under oath. In any future legal proceeding where the person testifies, the conviction can be used to impeach their credibility. This consequence extends indefinitely and affects everything from future litigation to professional disputes.

Employment

A felony record creates barriers to employment across many sectors, particularly government positions, law enforcement, legal work, financial services, and any role requiring a background check or security clearance.

Where Perjury Cases Arise in the Bay Area

Perjury charges are relatively uncommon as standalone prosecutions. When they are filed, they typically arise from specific contexts that Bay Area residents should be aware of:

Family law proceedings are one of the most common sources of perjury allegations. False statements in custody declarations, restraining order petitions, or financial disclosures during divorce proceedings can lead to criminal referrals.

Insurance fraud investigations sometimes generate perjury charges when false statements are made under oath during examinations under oath or in signed claim documents. These cases often overlap with insurance fraud charges filed under Penal Code section 550.

Court filings and declarations submitted in civil and criminal cases can form the basis for perjury if a party or witness makes materially false statements in documents filed under penalty of perjury.

Government applications and proceedings, including statements made to immigration authorities, licensing boards, or other government agencies, can trigger perjury investigations when inconsistencies are discovered.

Cases originating in Alameda County are typically heard at the Rene C. Davidson Courthouse in Oakland. The Alameda County District Attorney’s Office may assign complex perjury cases to its fraud or white-collar crime unit, particularly when the charge arises from a broader pattern of deceptive conduct.

Related Offenses

In plea negotiations, prosecutors may agree to reduce a perjury charge to a lesser offense such as filing a false police report under Penal Code section 148.5 or misdemeanor contempt, depending on the circumstances. These reductions can make a significant difference in terms of both the immediate sentence and long-term collateral consequences, particularly for immigration purposes.

Why The Nieves Law Firm Defends Perjury Cases Differently

Perjury cases are not about violence, drugs, or theft. They are about credibility, context, and the precise meaning of words. Defending these charges requires attorneys who can dissect transcripts, challenge the prosecution’s interpretation of what a client meant, and present the full context that transforms an apparent lie into a misunderstanding.

Our team brings the resources of one of the largest criminal defense teams in the Bay Area to every perjury case we handle. We understand that for our clients, the professional and personal consequences of a perjury conviction often eclipse the prison sentence. That understanding shapes how we build every defense, from the initial investigation through resolution.

If you are under investigation for perjury or have already been charged, do not make additional statements without legal counsel. Schedule a consultation with our team today. The earlier we can evaluate the evidence, the more effectively we can protect your rights, your career, and your future.