A declaration form is a written statement of facts that the signer affirms to be true under penalty of perjury, and under federal law it carries the same legal weight as a sworn affidavit. You sign it yourself, with no notary and no oath before a judge. The perjury clause built into the document does the work that a notary’s stamp would otherwise do, which is why declarations show up in federal courts, immigration files, customs lines, and tax returns.
What Makes a Declaration Legally Binding
The authority comes from a single federal statute, 28 U.S.C. ยง 1746, which allows an unsworn written declaration to replace almost any sworn written statement required by federal law. The statute reaches verifications, certificates, and affidavits, with narrow carve-outs for depositions, oaths of office, and oaths that must be administered by a specific official other than a notary.1United States Department of Justice. Criminal Resource Manual 1760 – Perjury Cases 28 USC 1746 Unsworn Declarations Under Penalty of Perjury
Once the signer writes the statutory perjury language and signs, the document has the same force and effect as a traditional sworn affidavit.2Office of the Law Revision Counsel. 28 USC 1746 – Unsworn Declarations Under Penalty of Perjury No witness is required. The signature under the perjury clause is enough.
The Required Closing Language
A declaration form is not just a letter you sign. The statute prescribes specific closing wording, and getting it wrong can render the document ineffective. The wording also changes depending on where you sign.
Signed inside the United States, its territories, or commonwealths, the closing must read substantially: “I declare under penalty of perjury that the foregoing is true and correct. Executed on [date]. [Signature].”
Signed outside the United States, the closing adds a reference to U.S. law: “I declare under penalty of perjury under the laws of the United States of America that the foregoing is true and correct. Executed on [date]. [Signature].”2Office of the Law Revision Counsel. 28 USC 1746 – Unsworn Declarations Under Penalty of Perjury
A declaration signed abroad without the “under the laws of the United States of America” phrase can be challenged as defective. Beyond that closing, a well-drafted declaration typically includes the signer’s full name and address, numbered paragraphs stating the facts, and the date of execution.3Office of the Law Revision Counsel. 28 USC 1746 – Unsworn Declarations Under Penalty of Perjury
Declaration or Affidavit: Which Do You Need
Declarations and affidavits do the same job: they put facts in writing under a legal guarantee of truthfulness. The practical difference is notarization. An affidavit requires the signer to swear an oath before a notary public or another authorized officer, who then stamps and signs. A declaration skips that step, and the perjury clause inside the document stands in for the notary.4Legal Information Institute. Declaration Under Penalty of Perjury
For most federal proceedings, the two are interchangeable. Courts treat a properly worded declaration as the functional equivalent of a notarized affidavit.1United States Department of Justice. Criminal Resource Manual 1760 – Perjury Cases 28 USC 1746 Unsworn Declarations Under Penalty of Perjury Some situations still require a notarized affidavit, though. Real estate transactions usually do, because county recording offices won’t accept unnotarized filings. State courts sometimes have their own rules about when a notarized affidavit is required, so local requirements are worth checking before filing.
If reaching a notary is difficult, whether because you’re overseas, on a tight deadline, or simply trying to save a step, a declaration under penalty of perjury will work in most federal contexts.
Where You’ll Encounter a Declaration Form
Court Filings
Federal courts use declarations constantly. When a party files a motion such as one for summary judgment, the supporting facts can come in through declarations signed under penalty of perjury, alongside depositions, documents, and other evidence.5United States Court of International Trade. Rule 56 – Summary Judgment The declaration must be based on personal knowledge and state facts that would be admissible as evidence. Rumor and speculation don’t belong in one.
When a motion rests on facts outside the court record, judges can consider those facts through affidavits or declarations instead of requiring live witnesses.6Legal Information Institute. Federal Rules of Civil Procedure – Rule 43 Taking Testimony In bankruptcy courts, written declarations under penalty of perjury are a standard way to present evidence in contested matters and adversary proceedings.7United States Bankruptcy Court Central District of California. Evidence – Declarations vs. Live Witnesses – Exhibits
Immigration
U.S. Citizenship and Immigration Services uses declaration forms throughout its processes. Form I-134, Declaration of Financial Support, is a common one: a sponsor signs it to confirm they will provide financial support to someone applying for certain immigration benefits during a temporary stay in the United States.8U.S. Citizenship and Immigration Services. I-134, Declaration of Financial Support In immigration court, written declarations can be central evidence for establishing a consistent and credible account of an applicant’s circumstances.
Customs
Anyone entering the United States, citizen or visitor, completes a customs declaration. CBP Form 6059B asks travelers to declare agricultural products, commercial merchandise, and monetary instruments exceeding $10,000.9U.S. Customs and Border Protection. When Entering the United States, What Items Must I Declare A false answer on that form is a false declaration to a federal agency, with the penalties that follow.
Tax Returns
Every federal tax return carries a perjury declaration. When you sign a Form 1040, you sign under penalties of perjury. The language is required by the Internal Revenue Code, and altering or striking it can cause a court to treat the return as invalid.
Penalties for a False Declaration
The consequences for lying on a declaration form are serious. Under federal perjury law, anyone who knowingly makes a false material statement in a declaration under penalty of perjury faces up to five years in prison, a fine, or both.10Office of the Law Revision Counsel. 18 USC 1621 – Perjury Generally “Material” matters here: the statement has to be one that could affect the proceeding or decision, and the signer must have known it was false.
A separate federal statute covers false statements made on government forms and in dealings with federal agencies. That offense also carries up to five years in prison, rising to eight years if the matter involves terrorism or certain other serious offenses.11Office of the Law Revision Counsel. 18 USC 1001 – Statements or Entries Generally A false customs declaration or a fabricated statement on an immigration form can trigger prosecution under either statute, or both.
The civil fallout can be just as damaging. Courts can strike a declaration found to be false, sanction the filer, or enter judgment against them. In immigration cases, a false statement can mean denial of benefits or removal. The legal system treats a signed declaration exactly like sworn testimony.4Legal Information Institute. Declaration Under Penalty of Perjury
How to Complete a Declaration Form That Holds Up
Writing a declaration sounds simple. State the facts and sign. A few practical points separate an effective one from a defective one.
- Stick to personal knowledge. Every fact should be something you witnessed, experienced, or know firsthand. Hearsay and speculation can be disregarded.
- Use numbered paragraphs, one factual point per paragraph. This makes it easier for a judge or attorney to reference specific statements.
- Be specific. “We met on March 12, 2024, at her office in Denver” carries more weight than “We met in early 2024.” Dates, locations, and names add credibility.
- Copy the statutory perjury clause word-for-word. Don’t paraphrase it, don’t shorten it, and don’t modify it. The wrong wording can make the whole document legally defective.
- Sign and date it. An unsigned declaration is just a letter. Both the signature and the execution date are required.2Office of the Law Revision Counsel. 28 USC 1746 – Unsworn Declarations Under Penalty of Perjury
- Redact personal identifiers before filing in court. Federal courts require filers to redact all but the last four digits of Social Security and financial account numbers, remove the month and day from birth dates, and replace minors’ names with initials. In criminal cases, home addresses must be reduced to city and state. The redaction duty falls on the filer, not the court.12Eastern District of Washington. Reminder – Redaction Requirements for Personal Information in Court Filings
Electronic signatures are generally accepted on federal documents under the E-SIGN Act, but individual courts and agencies set their own rules on whether an e-signed declaration qualifies. Before filing electronically, check the court’s local rules or the agency’s instructions.