Family law
What Does 'Under Penalty of Perjury' Mean When You Sign Court Forms?
Quick answer
Many family law forms end with a statement saying you are signing under penalty of perjury. This page explains in plain English what that phrase means and why it matters when you represent yourself.
Researched by Dan Martin, Legal Researcher · Published by Onbello Legal · Last updated June 2026
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What 'under penalty of perjury' means when you sign court forms
The plain-English meaning
When you sign a form under penalty of perjury, you are making a sworn statement. You are telling the court that everything you wrote on that form is true and correct to the best of your knowledge, and you are accepting legal responsibility if it is not. It carries the same seriousness as raising your hand and swearing to tell the truth in a courtroom.
You usually do not need a notary for these forms. The perjury language itself is what makes your signature a sworn statement. That is exactly why courts use it, because it lets you submit sworn information on paper without appearing in person to say it out loud.
Why courts require it
Judges make real decisions based on court forms, including decisions about custody schedules, parenting time, support, and property. The judge usually cannot independently verify every fact you write down, so the system depends on people telling the truth. The perjury statement is the court's way of making your paperwork trustworthy enough to rely on.
In family law cases, many of these forms describe things only you know well, such as your income, your expenses, or what happens during exchanges with the other parent. Because the court treats your signed forms as evidence, accuracy matters just as much on paper as it would on the witness stand.
What can happen if you sign something false
Knowingly putting false information on a sworn form is perjury, which is a crime. Beyond criminal exposure, there are practical consequences that show up far more often. If the other side or the judge catches an inaccuracy, your credibility takes a hit, and credibility is one of the most valuable things a self-represented parent has. A judge who doubts one part of your paperwork may doubt all of it.
False or incomplete financial disclosures can also lead the court to set aside orders, order sanctions, or rule against you on the issue involved. The exact penalties and procedures vary by state, so check your state's guide for specifics. The safe rule everywhere is the same, only sign what you know to be true.
How to fill out sworn forms carefully
Being honest does not mean being perfect. If you do not know an exact figure, many forms let you say a number is an estimate, and it is better to label an estimate than to present a guess as fact. Answer every question you can, avoid exaggerating even when you feel strongly about your case, and keep documents like pay stubs and bank statements that back up what you wrote.
If you realize after filing that something on your form was wrong, do not ignore it. Courts generally have a way to correct or update a filed form, though the process varies by state. Fixing an honest mistake promptly looks very different to a judge than leaving false information in the record. This page is general information, not legal advice, and Onbello is not a law firm. For anything you are unsure about, consider talking to a lawyer in your state.
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Where to check this
Forms, deadlines, and local rules change. Verify anything on this page against the official self-help resources for your state before you rely on it.
This page is general legal information, not legal advice, and does not create an attorney–client relationship. Laws and local rules vary and change. For advice about your situation, consult a licensed family-law attorney in your state.