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Cal. Rules of Prof. Conduct, rule 4.1 · Chapter 4. Transactions with Persons Other than Clients

Truthfulness in Statements to Others

Verbatim from the official edition

Text — 2026 edition, as the State Bar of California publishes it (read October 22, 2026)

In the course of representing a client a lawyer shall not knowingly:*

(a) make a false statement of material fact or law to a third person;* or

(b) fail to disclose a material fact to a third person* when disclosure is necessary to avoid assisting a criminal or fraudulent* act by a client, unless disclosure is prohibited by Business and Professions Code section 6068, subdivision (e)(1) or rule 1.6.

Notes and commentary — not rule text

Comment

[1] A lawyer is required to be truthful when dealing with others on a client’s behalf, but generally has no affirmative duty to inform an opposing party of relevant facts. A misrepresentation can occur if the lawyer incorporates or affirms the truth of a statement of another person* that the lawyer knows* is false. However, in drafting an agreement or other document on behalf of a client, a lawyer does not necessarily affirm or vouch for the truthfulness of representations made by the client in the agreement or document. A nondisclosure can be the equivalent of a false statement of material fact or law under paragraph (a) where a lawyer makes a partially true but misleading material statement or material omission. In addition to this rule, lawyers remain bound by Business and Professions Code section 6106 and rule 8.4.

[2] This rule refers to statements of fact. Whether a particular statement should be regarded as one of fact can depend on the circumstances. For example, in negotiation, certain types of statements ordinarily are not taken as statements of material fact. Estimates of price or value placed on the subject of a transaction and a party’s intentions as to an acceptable settlement of a claim are ordinarily in this category, and so is the existence of an undisclosed principal except where nondisclosure of the principal would constitute fraud.*

[3] Under rule 1.2.1, a lawyer is prohibited from counseling or assisting a client in conduct that the lawyer knows* is criminal or fraudulent.* See rule 1.4(a)(4) regarding a lawyer’s obligation to consult with the client about limitations on the lawyer’s conduct. In some circumstances, a lawyer can avoid assisting a client’s crime or fraud* by withdrawing from the representation in compliance with rule 1.16.

[4] Regarding a lawyer’s involvement in lawful covert activity in the investigation of violations of law, see rule 8.4, Comment [5].

Source of truth

Edition
2026 edition, as the State Bar of California publishes it (read October 22, 2026)
Official file
https://www.calbar.ca.gov/sites/default/files/portals/0/documents/rules/Rules-of-Professional-Conduct.pdf (PDF pages 52)
Text hash
sha256 8f8a33efbe6ec522c1b471063d846f3a15975ac6054ea452416f27fd36309087
Composed by
rpc/build 2026-10-22: the State Bar's 2026 PDF (pages 12-71) read by two readers, PyMuPDF glyph positions and pdfminer with the PDF's tagged structure, agreeing on 834 of 843 paragraphs character for character, the other nine (paragraph boundaries only) resolved against the rendered page; 205,485 printed glyphs accounted for; the State Bar's chapter pages a third reading

This rule cites

Provisions in this library that the text above cites, as it prints each citation. A range cited as “ss. 61.13-61.16” links its first and last provisions.

Business and Professions Code

California Rules of Professional Conduct

Cited by 1 provision

Provisions in this library whose text cites Cal. Rules of Prof. Conduct, rule 4.1. Each shows the citation as that text prints it.

California Rules of Professional Conduct

Procedural information only. Not legal advice and not a substitute for the advice of an attorney. Confirm the current text with the official publisher before relying on it.