• (a) Prohibited Uses. Evidence of the following is not admissible — on behalf of any party — either to prove or disprove the validity or amount of a disputed claim or to impeach by a prior inconsistent statement or a contradiction:
    • (1) furnishing, promising, or offering — or accepting, promising to accept, or offering to accept — a valuable consideration in compromising or attempting to compromise the claim; and
    • (2) conduct or a statement made during compromise negotiations about the claim — except when offered in a criminal case and when the negotiations related to a claim by a public office in the exercise of its regulatory, investigative, or enforcement authority.
  • (b) Exceptions. The court may admit this evidence for another purpose, such as proving a witness’s bias or prejudice, negating a contention of undue delay, or proving an effort to obstruct a criminal investigation or prosecution.


(Pub. L. 93–595, §1, Jan. 2, 1975, 88 Stat. 1933; Apr. 12, 2006, eff. Dec. 1, 2006; Apr. 26, 2011, eff. Dec. 1, 2011.)

Notes of Advisory Committee on Proposed Rules

As a matter of general agreement, evidence of an offer-to compromise a claim is not receivable in evidence as an admission of, as the case may be, the validity or invalidity of the claim. As with evidence of subsequent remedial measures, dealt with in Rule 407, exclusion may be based on two grounds. (1) The evidence is irrelevant, since the offer may be motivated by a desire for peace rather than from any concession of weakness of position. The validity of this position will vary as the amount of the offer varies in relation to the size of the claim and may also be influenced by other circumstances. (2) a more consistently impressive ground is promotion of the public policy favoring the compromise and settlement of disputes. McCormick §§76, 251. While the rule is ordinarily phrased in terms of offers of compromise, it is apparent that a similar attitude must be taken with respect to completed compromises when offered against a party thereto. This latter situation will not, of course, ordinarily occur except when a party to the present litigation has compromised with a third person.

The same policy underlies the provision of Rule 68 of the Federal Rules of Civil Procedure that evidence of an unaccepted offer of judgment is not admissible except in a proceeding to determine costs.

The practical value of the common law rule has been greatly diminished by its inapplicability to admissions of fact, even though made in the course of compromise negotiations, unless hypothetical, stated to be “without prejudice,” or so connected with the offer as to be inseparable from it. McCormick §251, pp. 540–541. An inevitable effect is to inhibit freedom of communication with respect to compromise, even among lawyers. Another effect is the generation of controversy over whether a given statement falls within or without the protected area. These considerations account for the expansion of the rule herewith to include evidence of conduct or statements made in compromise negotiations, as well as the offer or completed compromise itself. For similar provisions see California Evidence Code §§1152, 1154.

The policy considerations which underlie the rule do not come into play when the effort is to induce a creditor to settle an admittedly due amount for a lessor sum. McCormick §251, p. 540. Hence the rule requires that the claim be disputed as to either validity or amount.

The final sentence of the rule serves to point out some limitations upon its applicability. Since the rule excludes only when the purpose is proving the validity or invalidity of the claim or its amount, an offer for another purpose is not within the rule. The illustrative situations mentioned in the rule are supported by the authorities. As to proving bias or prejudice of a witness, see Annot., 161 A.L.R. 395, contra, Fenberg v. Rosenthal, 348 Ill. App. 510, 109 N.E.2d 402 (1952), and negativing a contention of lack of due diligence in presenting a claim, 4 Wigmore §1061. An effort to “buy off” the prosecution or a prosecuting witness in a criminal case is not within the policy of the rule of exclusion. McCormick §251, p. 542.

For other rules of similar import, see Uniform Rules 52 and 53; California Evidence Code §1152, 1154; Kansas Code of Civil Procedure §§60–452, 60–453; New Jersey Evidence Rules 52 and 53.

Notes of Committee on the Judiciary, House Report No. 93–650

Under existing federal law evidence of conduct and statements made in compromise negotiations is admissible in subsequent litigation between the parties. The second sentence of Rule 408 as submitted by the Supreme Court proposed to reverse that doctrine in the interest of further promoting non-judicial settlement of disputes. Some agencies of government expressed the view that the Court formulation was likely to impede rather than assist efforts to achieve settlement of disputes. For one thing, it is not always easy to tell when compromise negotiations begin, and informal dealings end. Also, parties dealing with government agencies would be reluctant to furnish factual information at preliminary meetings; they would wait until “compromise negotiations” began and thus hopefully effect an immunity for themselves with respect to the evidence supplied. In light of these considerations, the Committee recast the Rule so that admissions of liability or opinions given during compromise negotiations continue inadmissible, but evidence of unqualified factual assertions is admissible. The latter aspect of the Rule is drafted, however, so as to preserve other possible objections to the introduction of such evidence. The Committee intends no modification of current law whereby a party may protect himself from future use of his statements by couching them in hypothetical conditional form.

Notes of Committee on the Judiciary, Senate Report No. 93–1277

This rule as reported makes evidence of settlement or attempted settlement of a disputed claim inadmissible when offered as an admission of liability or the amount of liability. The purpose of this rule is to encourage settlements which would be discouraged if such evidence were admissible.

Under present law, in most jurisdictions, statements of fact made during settlement negotiations, however, are excepted from this ban and are admissible. The only escape from admissibility of statements of fact made in a settlement negotiation is if the declarant or his representative expressly states that the statement is hypothetical in nature or is made without prejudice. Rule 408 as submitted by the Court reversed the traditional rule. It would have brought statements of fact within the ban and made them, as well as an offer of settlement, inadmissible.

The House amended the rule and would continue to make evidence of facts disclosed during compromise negotiations admissible. It thus reverted to the traditional rule. The House committee report states that the committee intends to preserve current law under which a party may protect himself by couching his statements in hypothetical form [See House Report No. 93–650 above]. The real impact of this amendment, however, is to deprive the rule of much of its salutary effect. The exception for factual admissions was believed by the Advisory Committee to hamper free communication between parties and thus to constitute an unjustifiable restraint upon efforts to negotiate settlements—the encouragement of which is the purpose of the rule. Further, by protecting hypothetically phrased statements, it constituted a preference for the sophisticated, and a trap for the unwary.

Three States which had adopted rules of evidence patterned after the proposed rules prescribed by the Supreme Court opted for versions of rule 408 identical with the Supreme Court draft with respect to the inadmissibility of conduct or statements made in compromise negotiations. [Nev. Rev. Stats. §48.105; N. Mex. Stats. Anno. (1973 Supp.) §20–4–408; West’s Wis. Stats. Anno. (1973 Supp.) §904.08].

For these reasons, the committee has deleted the House amendment and restored the rule to the version submitted by the Supreme Court with one additional amendment. This amendment adds a sentence to insure that evidence, such as documents, is not rendered inadmissible merely because it is presented in the course of compromise negotiations if the evidence is otherwise discoverable. A party should not be able to immunize from admissibility documents otherwise discoverable merely by offering them in a compromise negotiation.

Notes of Conference Committee, House Report No. 93–1597

The House bill provides that evidence of admissions of liability or opinions given during compromise negotiations is not admissible, but that evidence of facts disclosed during compromise negotiations is not inadmissible by virtue of having been first disclosed in the compromise negotiations. The Senate amendment provides that evidence of conduct or statements made in compromise negotiations is not admissible. The Senate amendment also provides that the rule does not require the exclusion of any evidence otherwise discoverable merely because it is presented in the course of compromise negotiations.

The House bill was drafted to meet the objection of executive agencies that under the rule as proposed by the Supreme Court, a party could present a fact during compromise negotiations and thereby prevent an opposing party from offering evidence of that fact at trial even though such evidence was obtained from independent sources. The Senate amendment expressly precludes this result.

The Conference adopts the Senate amendment.

Committee Notes on Rules—2006 Amendment

Rule 408 has been amended to settle some questions in the courts about the scope of the Rule, and to make it easier to read. First, the amendment provides that Rule 408 does not prohibit the introduction in a criminal case of statements or conduct during compromise negotiations regarding a civil dispute by a government regulatory, investigative, or enforcement agency. See, e.g., United States v. Prewitt, 34 F.3d 436, 439 (7th Cir. 1994) (admissions of fault made in compromise of a civil securities enforcement action were admissible against the accused in a subsequent criminal action for mail fraud). Where an individual makes a statement in the presence of government agents, its subsequent admission in a criminal case should not be unexpected. The individual can seek to protect against subsequent disclosure through negotiation and agreement with the civil regulator or an attorney for the government.

Statements made in compromise negotiations of a claim by a government agency may be excluded in criminal cases where the circumstances so warrant under Rule 403. For example, if an individual was unrepresented at the time the statement was made in a civil enforcement proceeding, its probative value in a subsequent criminal case may be minimal. But there is no absolute exclusion imposed by Rule 408.

In contrast, statements made during compromise negotiations of other disputed claims are not admissible in subsequent criminal litigation, when offered to prove liability for, invalidity of, or amount of those claims. When private parties enter into compromise negotiations they cannot protect against the subsequent use of statements in criminal cases by way of private ordering. The inability to guarantee protection against subsequent use could lead to parties refusing to admit fault, even if by doing so they could favorably settle the private matter. Such a chill on settlement negotiations would be contrary to the policy of Rule 408.

The amendment distinguishes statements and conduct (such as a direct admission of fault) made in compromise negotiations of a civil claim by a government agency from an offer or acceptance of a compromise of such a claim. An offer or acceptance of a compromise of any civil claim is excluded under the Rule if offered against the defendant as an admission of fault. In that case, the predicate for the evidence would be that the defendant, by compromising with the government agency, has admitted the validity and amount of the civil claim, and that this admission has sufficient probative value to be considered as evidence of guilt. But unlike a direct statement of fault, an offer or acceptance of a compromise is not very probative of the defendant’s guilt. Moreover, admitting such an offer or acceptance could deter a defendant from settling a civil regulatory action, for fear of evidentiary use in a subsequent criminal action. See, e.g., Fishman, Jones on Evidence, Civil and Criminal, §22:16 at 199, n.83 (7th ed. 2000) (“A target of a potential criminal investigation may be unwilling to settle civil claims against him if by doing so he increases the risk of prosecution and conviction.”).

The amendment retains the language of the original rule that bars compromise evidence only when offered as evidence of the “validity,” “invalidity,” or “amount” of the disputed claim. The intent is to retain the extensive case law finding Rule 408 inapplicable when compromise evidence is offered for a purpose other than to prove the validity, invalidity, or amount of a disputed claim. See, e.g., Athey v. Farmers Ins. Exchange, 234 F.3d 357 (8th Cir. 2000) (evidence of settlement offer by insurer was properly admitted to prove insurer’s bad faith); Coakley & Williams v. Structural Concrete Equip., 973 F.2d 349 (4th Cir. 1992) (evidence of settlement is not precluded by Rule 408 where offered to prove a party’s intent with respect to the scope of a release); Cates v. Morgan Portable Bldg. Corp., 708 F.2d 683 (7th Cir. 1985) (Rule 408 does not bar evidence of a settlement when offered to prove a breach of the settlement agreement, as the purpose of the evidence is to prove the fact of settlement as opposed to the validity or amount of the underlying claim); Uforma/Shelby Bus. Forms, Inc. v. NLRB, 111 F.3d 1284 (6th Cir. 1997) (threats made in settlement negotiations were admissible; Rule 408 is inapplicable when the claim is based upon a wrong that is committed during the course of settlement negotiations). So for example, Rule 408 is inapplicable if offered to show that a party made fraudulent statements in order to settle a litigation.

The amendment does not affect the case law providing that Rule 408 is inapplicable when evidence of the compromise is offered to prove notice. See, e.g., United States v. Austin, 54 F.3d 394 (7th Cir. 1995) (no error to admit evidence of the defendant’s settlement with the FTC, because it was offered to prove that the defendant was on notice that subsequent similar conduct was wrongful); Spell v. McDaniel, 824 F.2d 1380 (4th Cir. 1987) (in a civil rights action alleging that an officer used excessive force, a prior settlement by the City of another brutality claim was properly admitted to prove that the City was on notice of aggressive behavior by police officers).

The amendment prohibits the use of statements made in settlement negotiations when offered to impeach by prior inconsistent statement or through contradiction. Such broad impeachment would tend to swallow the exclusionary rule and would impair the public policy of promoting settlements. See McCormick on Evidence at 186 (5th ed. 1999) (“Use of statements made in compromise negotiations to impeach the testimony of a party, which is not specifically treated in Rule 408, is fraught with danger of misuse of the statements to prove liability, threatens frank interchange of information during negotiations, and generally should not be permitted.”). See also EEOC v. Gear Petroleum, Inc., 948 F.2d 1542 (10th Cir. 1991) (letter sent as part of settlement negotiation cannot be used to impeach defense witnesses by way of contradiction or prior inconsistent statement; such broad impeachment would undermine the policy of encouraging uninhibited settlement negotiations).

The amendment makes clear that Rule 408 excludes compromise evidence even when a party seeks to admit its own settlement offer or statements made in settlement negotiations. If a party were to reveal its own statement or offer, this could itself reveal the fact that the adversary entered into settlement negotiations. The protections of Rule 408 cannot be waived unilaterally because the Rule, by definition, protects both parties from having the fact of negotiation disclosed to the jury. Moreover, proof of statements and offers made in settlement would often have to be made through the testimony of attorneys, leading to the risks and costs of disqualification. See generally Pierce v. F.R. Tripler & Co., 955 F.2d 820, 828 (2d Cir. 1992) (settlement offers are excluded under Rule 408 even if it is the offeror who seeks to admit them; noting that the “widespread admissibility of the substance of settlement offers could bring with it a rash of motions for disqualification of a party’s chosen counsel who would likely become a witness at trial”).

The sentence of the Rule referring to evidence “otherwise discoverable” has been deleted as superfluous. See, e.g., Advisory Committee Note to Maine Rule of Evidence 408 (refusing to include the sentence in the Maine version of Rule 408 and noting that the sentence “seems to state what the law would be if it were omitted”); Advisory Committee Note to Wyoming Rule of Evidence 408 (refusing to include the sentence in Wyoming Rule 408 on the ground that it was “superfluous”). The intent of the sentence was to prevent a party from trying to immunize admissible information, such as a pre-existing document, through the pretense of disclosing it during compromise negotiations. See Ramada Development Co. v. Rauch, 644 F.2d 1097 (5th Cir. 1981). But even without the sentence, the Rule cannot be read to protect pre-existing information simply because it was presented to the adversary in compromise negotiations.

Changes Made After Publication and Comments. In response to public comment, the proposed amendment was changed to provide that statements and conduct during settlement negotiations are to be admissible in subsequent criminal litigation only when made during settlement discussions of a claim brought by a government regulatory agency. Stylistic changes were made in accordance with suggestions from the Style Subcommittee of the Standing Committee. The Committee Note was altered to accord with the change in the text, and also to clarify that fraudulent statements made during settlement negotiations are not protected by the Rule.

Committee Notes on Rules—2011 Amendment

The language of Rule 408 has been amended as part of the general restyling of the Evidence Rules to make them more easily understood and to make style and terminology consistent throughout the rules. These changes are intended to be stylistic only. There is no intent to change any result in any ruling on evidence admissibility.

Rule 408 previously provided that evidence was not excluded if offered for a purpose not explicitly prohibited by the Rule. To improve the language of the Rule, it now provides that the court may admit evidence if offered for a permissible purpose. There is no intent to change the process for admitting evidence covered by the Rule. It remains the case that if offered for an impermissible purpose, it must be excluded, and if offered for a purpose not barred by the Rule, its admissibility remains governed by the general principles of Rules 402, 403, 801, etc.

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