Family law
How Do I Write a Declaration for Family Court?
Quick answer
A declaration is a written statement of facts that you sign and submit to the court, and in family court it is often the main way a judge hears your side of the story before a hearing. This guide explains what to include and how to write one clearly.
Researched by Dan Martin, Legal Researcher · Published by Onbello Legal · Last updated June 2026
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How to write a declaration for family court
What a declaration is and why it matters
A declaration is your written testimony. It tells the judge, in your own words, the facts that support what you are asking the court to do, such as a custody schedule, child support, or another order. You sign it under penalty of perjury, which means you are swearing that everything in it is true, the same as if you said it out loud on the witness stand.
The exact name and format vary by state. Some courts call this document a declaration, others call it an affidavit, and some states require it to be notarized while others only require your signature. Check your state's court forms and rules, or your state's guide, to confirm what your court expects.
What to include, and what to leave out
Stick to facts you personally know: things you saw, heard, said, or did, with dates and specifics wherever you can provide them. 'On the first weekend of last month, the other parent arrived two hours late for the exchange' is far more useful to a judge than 'they are always late.' Concrete, dated examples are what make a declaration persuasive.
Leave out insults, speculation about the other parent's motives, and long recitations of the entire history of your relationship. Judges read many declarations and tend to discount ones that read as angry or vague. If you have documents that back up a fact, such as messages or records, you can often attach them as exhibits and refer to them in the declaration, but the rules for exhibits vary by state and by court.
How to structure and format it
A clear structure helps the judge follow your story. A common approach is to open with a sentence identifying who you are and your relationship to the case, then present your facts in numbered paragraphs, usually in time order, with one main fact or event per paragraph. End by stating what you are asking the court to order and sign under penalty of perjury.
Keep it as short as you can while still covering the important facts. Many courts limit how long a declaration can be, and those limits vary by state and by the type of hearing, so check your court's rules before you write. Plain language beats legal-sounding language every time. Write the way you would explain the situation to a reasonable stranger, not the way you think a lawyer sounds.
Common mistakes self-represented parents make
The most common mistakes are writing about feelings instead of facts, arguing with the other parent's version of events instead of stating your own, and burying the important points in pages of background. Another frequent problem is including facts you only heard from someone else. Courts have rules about secondhand information, and those rules vary, so focus on what you personally witnessed whenever possible.
Finally, never exaggerate or guess. If one statement in your declaration turns out to be false or inflated, the judge may doubt everything else you wrote. If you are not sure of a date or detail, say so honestly, for example 'in approximately early spring.' This is general information, not legal advice. Onbello is not a law firm, and for advice about your specific situation you should talk to a licensed attorney in your state.
Specifics by state
Family law is state-specific. The general idea is similar everywhere, but the forms, rules, and deadlines vary by state. Here is this topic in the states we cover in detail.
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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.