What Questions Will Prosecutors Ask During a Proffer??

Last Updated on: 4th August 2026, 01:33 am

• Participants will be prepared to answer any questions that prosecutors may ask based on the information that the government is seeking to obtain in a target investigation (i.e., “what do you know?”).
• Prosecutors commonly open the proffer interview by asking a participant to provide their complete, unprompted narrative of the events at issue.
• In addition to broad, open-ended questions, prosecutors will ask specific questions to:
• Identify all of the participant’s acts, dates, times, locations, communications, and associates related to the subject matter of the investigation,
• Identify the participant’s knowledge of the conduct of others (if any) and any other information that the participant possesses that the prosecutors may consider relevant, and,
• Determine the truthfulness and completeness of the participant’s narrative, by frequently asking questions to which prosecutors already know the answers.
• All of this information will be compared to what prosecutors know from prior investigations and what prosecutors anticipate learning through the participant’s proffer.
• Depending upon the terms negotiated by defense counsel, participants may be required to respond to a limited or unlimited set of questions, or to a list of questions agreed upon by the parties prior to the proffer session.
• Most participants in federal criminal investigations will need to do so in a manner consistent with their individual agreements.
• All federal proffers may be conducted in writing (although federal prosecutors routinely insist upon interviews), and they may take place either in prosecutors’ offices or at investigating agencies.
• Although participants in federal proffers may include multiple participants, the attendee list routinely includes only (i) the participant, (ii) defense counsel, (iii) a prosecutor, and (iv) federal agents, with the latter being present for the purpose of taking notes.
• Although the prosecutor will typically initiate the proffer, the participant’s counsel may also begin the session by outlining the topics that the participant will address in the interview.

What specific questions do prosecutors ask in a federal proffer?

• Who directed, who approved, who performed, and who benefited from the conduct at issue?
• What did each person involved know? When did each person involved know the information that they knew?
• When, where, with whom, and about what did participants meet, talk, call, message, email, text, or otherwise communicate?
• When did the subject conduct occur (with specificity regarding the dates and times)?
• Where did the subject conduct occur (with specificity regarding the street addresses, apartment numbers, office numbers, cities, counties, states, and countries)?
• Who are the specific individuals and entities involved (with specificity regarding the name, address, birth date, and SSN of each individual and the name, address, state of incorporation, and federal registration number of each entity)?
• What were the means and methods used (with specificity regarding the financial tools, equipment, vehicles, weaponry, technology, and tactics involved)?
• How did the participant know these facts?
• Does the participant have the ability to substantiate the information provided (through documents, witnesses, evidence, data, etc.)?
• Does the participant know the specific location of these documents, records, devices, or other forms of evidence?
• Does the participant know the name, address, birth date, or contact information of these witnesses?
• Are there other individuals or entities to whom the participant should point?
• Are there other documents, records, devices, or other forms of evidence that the participant can help locate?
• Are there other people who could answer questions pertaining to these facts?
• Who are the known and unknown associates of each individual or entity involved?
• How is each person or entity connected to the others involved?
• When did the relationship begin? When did it end (if any)?
• What was the purpose of the relationship?
• Who has contact with whom? How is that contact initiated? How is that contact maintained?
• What is the status of each individual or entity with regard to its or his or her knowledge, involvement, and actions (if any) in the subject conduct?
• Why did the participant act as the participant did? What were the participants’ (if any) motives and intended results?
• Why did others act as they did? What were others’ (if any) motives and intended results?
• What actions did the participant or did others take to conceal the conduct at issue?
• What efforts did the participant or did others make to destroy the documents or other evidence?
• Has any contact occurred between the participant and anyone else?
• What other efforts has the participant seen or made to obstruct the investigation?
• Does the participant know anyone else who may have obstructed the investigation?
• Have you ever seen this bank statement, email, text message, voicemail, or other form of records from this source?
• Can you recognize this voice on this audio recording?
• Can you identify this person in this video or photo?
• Can you recognize this person’s handwriting?
• Do you know about this specific bank account, financial transaction, or other record?
• Are you aware of this specific piece of evidence?
• To what extent can the participant identify, authenticate, or make sense of the evidence produced by the prosecutors?

Do prosecutors ask targets, subjects, and witnesses different questions?

• While targets may participate in federal criminal proffers, so may subjects and witnesses who have not yet been charged as a defendant. However, those categories are distinct, and Justice Manual § 9-11.151 defines them as follows:
• “A ‘target’ is a person as to whom the prosecutor or the grand jury has substantial evidence linking him or her to the commission of a crime and who, in the judgment of the prosecutor, is a putative defendant.”
• “A ‘subject’ of an investigation is a person whose conduct is within the scope of the grand jury’s investigation.”
• In a target proffer interview, questions will routinely emphasize:
• Your own conduct and the conduct of others involved in the federal investigation;
• Your actions that are (or appear to be) wrong and illegal;
• Your intent (or appear to be intent);
• Your exposure (or apparent exposure) to criminal charges;
• Your explanation for the conduct that appears to be illegal;
• Any potential defenses that you might be able to raise;
• And how you can cooperate with the government (if any), even though, in most cases, you don’t have any way to do so without incriminating yourself.
• The witness proffer will routinely emphasize:
• Your firsthand observations;
• Sources of corroborating information;
• Your contact with potential subjects of investigation;
• Your knowledge of potential crimes, subjects, targets, and evidence;
• The actions you took in response to your knowledge or first-hand observation of the crime in question;
• And, in many cases, your ability to testify truthfully in court.
• Prospective cooperator proffers will focus on:
• Whether the prospective cooperator has the ability to cooperate with the government against others;
• Whether the prospective cooperator is willing to cooperate with the government against others (without any benefit to the prospective cooperator, though this is very rare);
• How the prospective cooperator can cooperate;
• When the prospective cooperator can testify;
• Whether the prospective cooperator is willing to testify truthfully in court;
• And, to what extent the prospective cooperator is willing to disclose his or her own misconduct.
• 18 U.S.C. § 6002(a) prohibits the use of testimony compelled under a section 6002 immunity order in “a criminal case against the witness which could have been instituted but for the use of such testimony.”
• 18 U.S.C. § 6002 does not bar prosecution for:
• False statements made by the witness in response to questioning under a section 6002 immunity order;
• Perjury committed by the witness in a federal court proceeding;
• Contempt or noncompliance with the court order imposed in response to the witness’s invocation of a federal constitutional or statutory privilege;
• And any other criminal offense involving the witness’s conduct (i.e., provided that the prosecution for that criminal offense does not result from the use of the witness’s testimony).

How do prosecutors decide whether my proffer answers are truthful?

• Prosecutors will use the information they already have in their possession to test for discrepancies, by presenting documents, referencing witness accounts, and asking a participant to explain any contradictions.
• Prosecutors may also ask a participant about events that the participant will not have known about, to test whether the participant admits that he or she does not have knowledge of the event or facts of the event.
• Prosecutors may ask a participant whether he or she learned information at the time in question, or whether he or she learned the information in the course of the events’ aftermath or investigation.
• The witness will also be assessed for credibility. Federal prosecutors typically assess credibility based on (i) the witness’s consistency, (ii) the witness’s level of detail, (iii) the witness’s manner of communication (i.e., his or her demeanor), (iv) the witness’s corroboration of evidence previously learned by the prosecutors, (v) the witness’s willingness to disclose all relevant information, and, (vi) any prior criminal activity the witness may have been involved in.
• If a target, subject, or witness is in a position to provide useful information about others who may be involved, prosecutors will typically assess the information based on (i) novelty, (ii) significance, (iii) verifiability, and, (iv) corroboration.
• Prosecutors may also consider information derived from hearsay sources (i.e., “he said,” “she said”) even if such information will be inadmissible at trial.
• Statements that describe another person’s unspoken thoughts, beliefs, or intent will typically be deemed as a participant’s inferences, not as direct knowledge of a subject’s state of mind.
• In most cases, the participant’s statements will be summarized into notes, or a formal transcript will be generated. Depending on the situation, the summary notes may then be incorporated into a Form 302, or the summary notes will be used as the basis for a Form 302.
• Prosecutors may also take notes during the interviews and use these notes for the same purpose.

This is the point at which most people call a lawyer. Spodek Law Group takes federal criminal defense cases nationwide from its New York and Los Angeles offices.

Is signing a proffer agreement the same as snitching on others?

• Prosecutors generally use proffers to get a sense of whom is potentially eligible to become a federal witness and to determine if what that person can do is worth negotiating a cooperation agreement.
• Signing a proffer agreement primarily does not constitute informing on others, though a participant may still be required to describe certain individuals’ actions in order to get the full value out of their potential cooperation.
• Prosecutors use proffer agreements to set the rules for the interview (i.e., not only for what the person will be asked, but also for what the person’s answers will prove).
• After a proffer, prosecutors and defense counsel will evaluate the situation based on the target, subject, or witness’s responses.
• In some cases, the target, subject, or witness will enter into a formal cooperation agreement.

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• In some cases, the target, subject, or witness will only enter into a formal cooperation agreement if a certain number of charges are dropped.
• In some cases, prosecutors and defense counsel will negotiate a limited deal to which the target, subject, or witness will only have to fulfill specific (or limited) cooperation requirements.
• If the target, subject, or witness entered into a defense proffer, he or she will not have to enter into a formal cooperation agreement unless he or she chooses to do so.
• In many cases, the government will decline to bring charges if the target, subject, or witness provides sufficient (and helpful) information during the proffer.
• In many cases, the government will agree to either offer immunity or negotiate a plea agreement if the target, subject, or witness enters into a formal cooperation agreement.
• The most favorable outcomes in most cases involving a formal cooperation agreement include:
• Immunity
• Leniency in plea negotiations, reduced charges, or a no-jail time plea agreement
• Nonprosecution (even for known criminal acts)
• No deal with the government
• U.S.S.G. § 5K1.1 provides that, upon motion of the government stating that the defendant has provided substantial assistance in the investigation or prosecution of another person who has committed an offense, the court may impose a sentence below the otherwise applicable guideline range.

What does a proffer agreement actually protect me from?

• While a proffer agreement can protect the participant from the prosecutors’ use of the participant’s proffer statements, signing the agreement does not inherently grant immunity, nor does it necessarily prevent the government from using that information against him or her in the future.
• Many target, subject, or witness proffer agreements agree to restrict the direct use of the statements made during the proffer in the government’s case-in-chief.
• In most cases, however, target, subject, or witness proffer agreements may also agree to use the participant’s statements for the purposes of:
• Conducting investigative follow-ups and obtaining information based on the statements provided;
• Pursuing any leads resulting from the information disclosed during the proffer;
• Furthering an investigation or prosecution without relying on the proffer;
• Impeaching the participant if he or she testifies;
• The target, subject, or witness’s contact with other potential subjects of investigation;
• And prosecution for perjury or other offenses.
• Again, just because the proffer agreement does not protect you from derivative use does not mean prosecutors can necessarily use the information in your proffer to pursue your prosecution; it simply does not preclude them from pursuing your prosecution based on information obtained from others.
• Just because the agreement does not expressly forbid the government’s use of the statements is not that information obtained from the proffer cannot be independently corroborated. If prosecutors gather corroborative evidence independently of your proffer statements, then such independently-obtained evidence will not be subject to the direct-use restriction.
• Additionally, in most cases, proffer agreements include language allowing for the use of statements in a subsequent trial to impeach a target, subject, or witness if he or she testifies in a manner that contradicts statements made during a proffer interview.
• Although the terms and conditions of target, subject, and witness proffer agreements vary significantly from case to case, courts generally enforce them to the fullest extent of the negotiated terms, ensuring that participants are protected according to the scope of the agreement.
• However, just because a target, subject, or witness has signed a proffer agreement doesn’t mean that their statements are protected from use in any potential prosecution. Even if the specific terms of a proffer agreement are generally respected, a participant may still be vulnerable in situations such as these:
• To be clear, contractual proffer protections that only protect against direct use do not afford a target, subject, or witness protection that is equal to statutory protection under 18 U.S.C. § 6002, including statutory protection against the derivative use of testimony.
• No federal rule, statute, or case law prescribes a single uniform proffer agreement to be used in every federal criminal case. Most prosecutors have their own agreement on file which they present to prospective participants in their investigation, though they are amenable to altering the agreement based on the circumstances at hand.
• If you are in the process of negotiating a proffer agreement with the government, work closely with your experienced criminal defense lawyer, who can customize your proffer agreement to your needs.

What are the signs a prosecutor has a weak case?

• Generally, just because federal prosecutors ask questions during a proffer doesn’t mean that they have a strong case. On the other hand, just because they don’t ask questions during a proffer doesn’t mean that they have a weak case.
• While receiving an invitation to a proffer from the government establishes neither case strength nor a decision to pursue criminal charges, these events often signal that the prosecutors have enough evidence to present to a grand jury and that you could be the subject of a federal criminal case.
• During your proffer, if the prosecutor asks you about your knowledge or actions involving an exact date, exact amounts, exact identity of the parties involved, or the exact communications involved, then this may signal that the prosecutor has documentary evidence that can corroborate those facts and establish those facts, with or without your cooperation.
• When prosecutors ask broad, open-ended questions, this may signal that they are trying to test how much information you are willing to disclose and to test whether the information that you know can help them gather the evidence they need. In turn, this could signal either weakness in their case or their confidence that you will give them a reason to charge you.
• During most proffers, prosecutors will also inform the participants about what the government can and cannot use from the proffer. This is known as a reverse proffer, and it can give the participant insight into what prosecutors know and whether the evidence they have obtained thus far is enough to sustain a conviction against you (and what evidence they obtained from you in the prior proffer session).
• Just like a reverse proffer, a target, subject, or witness’s proffer can be used by defense counsel to help prosecutors realize their case is not as strong as they had thought. In turn, this helps the target, subject, or witness establish that their case is not as strong as the prosecutors thought.
• While the precision or breadth of the questions asked during a proffer may signal strength or weakness, alone these factors will not reliably establish prosecution strength.
• While practices may differ between federal districts, this is only apparent from the outcome of each case. It does not establish any nationwide policies regarding proffer interviews or agreements.
• Federal Rule of Evidence 602 states, “A witness may testify to a matter only if evidence is introduced sufficient to support a finding that the witness has personal knowledge of the matter.”

Contact a Federal Criminal Defense Attorney

Nothing here is legal advice, and the details of your case matter. Todd Spodek and Spodek Law Group take federal criminal and white collar cases nationwide, from offices in New York, Brooklyn, Queens and Los Angeles. You can reach the firm at 212-300-5196.