Family court proceedings on the South Shore, whether in Hingham, Plymouth, Norwell, or elsewhere in Plymouth County, bring strong emotions and high stakes. Custody fights or securing your financial future in a divorce can feel overwhelming.
Lying under oath in the Massachusetts family court is not only unethical; it is a serious crime that can ruin your case, lead to prison, and cost you everything at stake.
We've represented clients for years in South Shore, Massachusetts Probate and Family Court, and we've seen how even minor dishonesty can undo a case. Let's examine what happens when someone lies under oath in family court and why honesty is always your best legal strategy.
Understanding Perjury Laws in South Shore, Massachusetts (M.G.L. c. 268 § 1)
In Massachusetts, perjury—meaning knowingly making a false statement under oath—is defined and criminalized under Massachusetts General Laws Chapter 268, Section 1. This statute applies to all court proceedings in the Commonwealth, including family court matters handled in Probate and Family Court (the special court that handles family law issues such as divorce or custody).
Here's what the law requires to prove perjury:
- You made a statement while under oath (during testimony, in an affidavit, or in sworn financial statements)
- The statement was materially false, meaning it related to an important issue in your case.
- You made the statement willfully and knowingly; you knew it was false when you said it.
- The false statement was made with the intent to mislead the court.
Why this matters: Not every mistake or misstatement is perjury. If you forgot a detail, made an honest error about dates, or misunderstood a question, that's different from deliberately fabricating information. But the line between "mistake" and "lie" can be subjective. Judges in Plymouth County and across the South Shore take dishonesty very seriously.
Criminal Penalties for Lying Under Oath in Probate and Family Court
A perjury conviction in Massachusetts under M.G.L. c. 268 § 1 carries harsh penalties:
- Up to 20 years in state prison, OR
- A fine of up to $1,000, OR
- Up to 2.5 years in jail, OR
- Both a fine and imprisonment
While perjury prosecutions are relatively rare, prosecutors must prove beyond a reasonable doubt that you intentionally lied rather than simply being confused or mistaken. They absolutely do happen, notably in situations involving:
- Hidden assets or income during divorce proceedings
- False abuse allegations were made to gain a custody advantage.
- Fabricated evidence about a parent's fitness or substance abuse
- Contradictory sworn statements made in multiple court filings
Why this matters: Even without criminal charges, perjury accusations threaten your case. Opposing counsel will highlight differences in your testimony to damage your credibility. South Shore judges, experienced and perceptive, have little tolerance for dishonesty.
How Dishonesty Impacts Child Custody and Divorce Outcomes
Lying under oath leads to immediate, severe consequences for your case in Massachusetts Probate and Family Court, beyond potential criminal charges.
Destroyed Credibility
Once a judge concludes you've lied about one thing, everything you say becomes suspect. Even your truthful statements will be viewed through the lens of your dishonesty. Judges in Hingham, Plymouth, and across Plymouth County handle hundreds of family law cases; they've heard it all, and they have little patience for liars.
Child Custody Consequences
Massachusetts courts decide custody based on the best interests of the child. When you lie under oath in a custody dispute, you're demonstrating to the judge that you:
- Cannot be trusted to tell the truth
- Are willing to manipulate the court system
- Maybe you are willing to manipulate your children.
- Don't respect the legal process.
We've seen judges in South Shore family courts explicitly warn parents that lying under oath could result in loss of physical custody. Courts have changed custody arrangements specifically because a parent's dishonesty demonstrated they weren't fit to make decisions in their child's best interest.
Financial Implications in Divorce
If you hide assets, underreport income, or lie about finances during divorce, you risk long-term legal exposure. Massachusetts law allows your ex-spouse to return to court for up to five years to challenge the original court order if you concealed assets or lied.
This means:
- You must maintain the deception for years while continuing to face ongoing risk.
- You could be ordered to pay your ex-spouse's attorney fees for bringing the motion.
- The court can modify the property division, often far more unfavorably than if you'd been honest initially.
- You may face contempt charges on top of perjury exposure.
Why this matters: Any short-term advantage from lying is vastly outweighed by the lasting legal, financial, and emotional costs. We help clients in Norwell, Duxbury, and across the South Shore see that transparency, even if uncomfortable, is always the stronger legal strategy.
Identifying and Proving Lies in Massachusetts Family Law Proceedings
You might wonder how lies get discovered in family court. Attorneys and judges across the South Shore have several tools to uncover dishonesty:
Document Discovery
- Bank statements and financial records
- Tax returns and W-2s
- Social media posts and electronic communications
- Employment records and pay stubs
- Medical and school records
Depositions and Cross-Examination
- Detailed questioning under oath before trial
- Opportunities to catch inconsistencies in your story
- Comparison of deposition testimony with trial testimony
Third-Party Witnesses
- Teachers, neighbors, family members, and friends who contradict your claims
- Expert witnesses (forensic accountants, custody evaluators, therapists)
- Court-appointed guardians ad litem investigating custody disputes
Opposing Party Evidence
- Your ex-spouse often knows details about your life that contradict false statements.
- Videos, recordings, and photographs that disprove your claims
- Documentation proving you weren't where you claimed to be or didn't do what you said you did
Why this matters: Modern family law offers little room for deception. Digital trails, discovery tools, and experienced attorneys usually expose lies—often at critical moments. Consequences go far beyond a single hearing.
Why You Need an Experienced South Shore Family Law Attorney
If you're facing family court proceedings in Plymouth County or anywhere across the South Shore, working with an experienced attorney isn't just helpful; it's essential to protecting your rights and avoiding the pitfalls that can destroy your case.
Here's what Sawin Law, P.C. provides to clients in Hingham, Marshfield, Scituate, and throughout the region:
Honest Case Evaluation
We clarify what the court truly needs and help present your case truthfully while strongly advocating for your interests. Clients may worry that honesty will hurt their case, but we know how to frame facts persuasively without crossing the line.
Strategic Preparation
Before you ever step into a courtroom or sign an affidavit, we thoroughly prepare you. We anticipate what questions opposing counsel will ask, what documents they might present, and how to answer truthfully while protecting your position.
Protection from Self-Incrimination
If parts of your situation could expose you to legal liability, we help you understand your rights and options. We explain when you should exercise your Fifth Amendment privilege against self-incrimination.
Damage Control
If you've already made inaccurate statements, whether in court filings, financial statements, or testimony, we can help you correct the record properly and minimize the damage. Coming forward with corrections is always better than having lies discovered by opposing counsel.
Local Court Knowledge
We practice regularly in the Massachusetts Probate and Family Court across the South Shore. We know the local judges, understand their preferences and priorities, and know how to present cases effectively in Plymouth County courtrooms.
Your children, finances, and future are too important to risk on dishonesty or weak legal counsel. Our experienced team at Sawin Law, P.C. will vigorously advocate for you and keep your case on solid legal ground.
Frequently Asked Questions About Lying Under Oath in Family Court
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What happens if I accidentally say something wrong under oath?
Honest mistakes or memory lapses aren't perjury. If you realize you misstated something, tell your attorney immediately so you can correct the record. Courts understand that people get nervous and occasionally make errors; what matters is correcting them quickly. -
Can my ex-spouse accuse me of perjury just because they disagree with my testimony?
Your ex can accuse you of anything, but perjury requires proof that you knowingly made a false statement regarding a material fact. Disagreements about interpretations, opinions, or subjective experiences typically don't constitute perjury. -
How long can I be prosecuted for perjury after lying in family court?
In Massachusetts, the statute of limitations for perjury is 6 years from the date the offense was committed. However, practical prosecution decisions are usually made much sooner if evidence of perjury comes to light during or shortly after your case. -
Will I automatically lose custody if the judge thinks I lied?
Not automatically, but lying under oath severely damages your credibility and can absolutely influence custody decisions. Judges consider many factors in determining a child's best interests, and a parent's honesty and integrity are among them. -
What if my attorney tells me to lie or stretch the truth?
Any attorney who advises you to lie is violating their ethical obligations and putting both of you at legal risk. If an attorney ever suggests this, you should find new representation immediately. Ethical attorneys like those at Sawin Law, P.C. will never ask you to lie; we win cases through strong advocacy, not dishonesty. -
Can lying in a financial affidavit come back to haunt me after the divorce is final?
Yes. Under Massachusetts law, your ex-spouse has up to five years after the divorce is finalized to challenge the property division if they discover you concealed assets or income. You could face modified orders, attorney's fees, and contempt charges. -
Is exaggerating the same as lying under oath?
Legally, yes, if you knowingly make false statements about material facts, even if you frame them as exaggerations, you could be charged with perjury. Courts don't distinguish between "lies" and "exaggerations" when you're under oath. -
What should I do if I discover my ex-spouse lied under oath?
Document everything and tell your attorney immediately. Your attorney can address the inconsistencies through cross-examination, motions, and, if necessary, requesting perjury prosecution. Never confront your ex directly or take matters into your own hands. -
Can text messages or social media posts prove I lied in court?
Absolutely. Digital evidence is routinely used in Massachusetts family court proceedings. Anything you've posted, texted, or emailed can be used to contradict sworn testimony. This is why we counsel South Shore clients to be extremely careful about their digital footprint during family law cases. -
How does the court prove I "willfully" lied rather than just being mistaken?
Prosecutors or opposing counsel typically prove willfulness through contradictory documents, prior inconsistent statements, or circumstances showing you couldn't have honestly been mistaken. For example, if you swore you had no bank account but bank records show you opened one the week before, that demonstrates willful dishonesty.
Protect Your Case, And Your Future, With Honest, Strategic Legal Representation
Family court proceedings in Massachusetts are stressful enough without adding criminal exposure and destroyed credibility to your challenges. Whether you're facing a custody dispute, divorce, or modification case anywhere in Plymouth County or across the South Shore, the attorneys at Sawin Law, P.C. are here to guide you through the process with integrity and skilled advocacy.
We help clients in Hingham, Plymouth, Marshfield, Duxbury, Norwell, Cohasset, Scituate, and throughout the region present their cases truthfully and persuasively, because we know that honesty, combined with strategic legal representation, gives you the strongest position in court.
Don't risk everything by lying under oath. And if you're concerned about statements you've already made, don't wait for the situation to get worse. Let us help you navigate your family law matter effectively.
📞 Call us today at (781) 713-1212 or contact us online for a confidential consultation. Your family's future deserves the protection that comes from honest, experienced legal counsel.
Disclaimer: This blog post is for informational purposes only and does not constitute legal advice. Massachusetts family law is complex and fact-specific. The information provided here is current as of February 2026, but laws and court interpretations can change. Reading this article does not create an attorney-client relationship with Sawin Law, P.C. For specific guidance about your situation, please consult with a qualified Massachusetts family law attorney.