What Is Spousal Privilege? Types, Waivers, and Exceptions

Spousal privilege is a legal protection that keeps courts from forcing a husband or wife to testify against the other or to reveal private conversations from the marriage. It is not one rule but two: a testimonial privilege that lets a spouse refuse to take the stand in a criminal case, and a marital communications privilege that shields confidential conversations between spouses in both civil and criminal cases. The two work independently, belong to different people in different states, and end at different points, so the one that matters in any given situation depends on what a court is actually trying to get at.

Testimonial Privilege: Refusing to Take the Stand

Testimonial privilege, sometimes called spousal immunity, lets a spouse refuse to testify against their husband or wife in a criminal case. In federal court, the U.S. Supreme Court held in Trammel v. United States that this privilege belongs to the witness-spouse alone. The person called to the stand decides whether to testify, and the defendant-spouse cannot block that choice.¹ Most states follow that approach. A minority flip it and let the defendant-spouse keep the witness-spouse off the stand even when the witness is willing to talk.²

One feature that surprises people: this privilege is not limited to things that happened inside the marriage. A witness-spouse can refuse to testify about events from before the couple married as well as during the marriage.² It also applies in grand jury proceedings, not just at trial.

Testimonial privilege depends on a currently valid marriage. Once the couple divorces, it is gone, and a former spouse can be compelled to testify about anything, including events from the marriage itself.³ Death of either spouse ends it for the same reason.

Marital Communications Privilege: Protecting Private Conversations

The marital communications privilege is narrower in what it covers but far more durable. It protects the content of confidential communications made between spouses during a valid marriage, and it applies in both civil and criminal cases.³ Where testimonial privilege lets a spouse avoid the witness stand entirely, this one targets specific conversations. A spouse can be called to testify on other matters and still block questions about what was said privately between the two of them.

In most jurisdictions, both spouses hold the privilege, so either one can prevent disclosure of the communication.² Some states give the privilege only to the spouse who originally made the communication. The practical difference matters: in a state where both hold it, a husband could stop his wife from voluntarily revealing something he told her, even if she wants to share it. In a state where only the speaker holds it, she could disclose what he said but could not be forced to reveal what she told him.

What Counts as a Protected Communication

The privilege covers communications that were intended to be private and made in reliance on the trust of the marriage.² That includes spoken conversations, written notes, and private acts meant to convey something between spouses. The burden of showing a communication was not intended to be private falls on the party trying to get it into evidence.

Timing is strict. Only communications made during the marriage qualify. Something one partner said while the couple was dating or engaged gets no protection, even if they later marry. Conversations after a divorce are also unprotected.³ This is where the two privileges diverge sharply: testimonial privilege reaches back before the marriage, the communications privilege does not.

Confidentiality is the other hard requirement. If a third party was present when the communication happened, the privilege disappears for that communication. Courts have interpreted this strictly. Even a child in the room can destroy the confidentiality the privilege depends on. Telling a friend afterward what your spouse said in private can also waive the protection, because the communication is no longer confidential once it has left the marriage.

Who Counts as a Spouse

Both privileges require a legally valid marriage.² Couples who live together without marrying cannot invoke either privilege, no matter how long they have been together.

Common-law marriages qualify in states that recognize them, because those states treat them as legally valid marriages. The couple has to meet all of that state’s requirements, though. Simply calling each other spouses is not enough in most places.

Since Obergefell v. Hodges in 2015, same-sex married couples have the same spousal privileges as any other married couple.⁴ Civil unions and domestic partnerships are a murkier picture, and the legal landscape for those arrangements remains uncertain.

When Spousal Privilege Does Not Apply

Both privileges have exceptions, and this is where cases are actually won and lost. The privilege exists to protect marital harmony, but courts refuse to let it stand in the way when the marriage itself is the site of harm or when spouses are using it to shield criminal activity.

Crimes Against a Spouse or Child

The most commonly invoked exception applies when one spouse is charged with a crime against the other spouse or against a child of either spouse. In domestic violence and child abuse cases, the privilege does not apply.² There is no marital harmony to preserve when one spouse is victimizing the other or their children.

Joint Criminal Activity

When spouses are committing a crime together, communications made to plan or carry out that crime are not privileged. Communications made to aid a future or continuing crime fall outside the privilege for the same reason. A spouse cannot use the marital relationship as a safe harbor for plotting criminal activity.

Lawsuits Between Spouses

When one spouse sues the other, the privilege does not apply. This comes up most often in divorce, where both sides need access to information about the marriage to resolve property, support, and custody questions.² Letting one spouse block relevant testimony would defeat the point of the proceeding.

Third-Party Presence

A communication made in front of anyone other than the two spouses loses its confidential character and is not protected. Children, friends, anyone within earshot. The privilege only shields communications the spouses intended to keep between themselves.

How the Privilege Is Waived

Spousal privilege can be lost, sometimes on purpose and sometimes by mistake.

For testimonial privilege in federal court, the witness-spouse holds it and can waive it simply by agreeing to testify. The defendant-spouse has no power to stop that.¹ Prosecutors sometimes offer a cooperating spouse immunity or a plea deal, and the decision to take it and testify belongs entirely to that spouse.

For the marital communications privilege, the most common way to lose protection is by sharing the communication with someone outside the marriage. Once either spouse reveals a private conversation to a third party, the confidentiality the privilege depends on is destroyed, and the privilege is lost for that specific communication. Courts do not require formal or deliberate disclosure for the waiver to take effect; a casual mention to a friend or family member can be enough.

A witness-spouse’s decision to testify about non-privileged matters does not automatically waive the separate marital communications privilege. The two privileges operate independently. Agreeing to take the stand and answer questions about events you personally observed does not open the door to questions about confidential conversations with your spouse.

What Divorce and Death Do

The two privileges respond very differently to the end of a marriage, and this is where the distinction between them has the most practical impact.

Testimonial privilege disappears entirely once the couple divorces. A former spouse can be compelled to testify about anything, including events from during the marriage.³ Death of either spouse ends it for the same reason.

The marital communications privilege survives both divorce and death.² Confidential communications made during the marriage stay protected indefinitely, even decades after the marriage ends. Only communications made after the divorce or after the marriage otherwise ended fall outside the privilege.³

This asymmetry catches people off guard. After a divorce, an ex-spouse can be forced to take the stand and testify about what they saw you do. But a confession whispered one night during the marriage can still be kept out of court.

Federal and State Courts Handle It Differently

How spousal privilege works also depends on which court system you are in. Federal courts apply privilege rules based on federal common law under Federal Rule of Evidence 501.⁵ There is no single federal statute that spells the privilege out. Judges follow the principles developed through decisions like Trammel.

State courts follow their own rules of evidence, and those rules vary. Who holds the testimonial privilege, whether the communications privilege covers acts as well as words, and which exceptions apply can all differ depending on where the case is filed. In a federal civil case where state law supplies the rule of decision, the court applies the state’s privilege rules rather than federal common law.⁵ If a specific case matters to you, the governing law is the law of the court hearing it.

1
Justia. Trammel v. United States, 445 U.S. 40 (1980)
2
Cornell Law School Legal Information Institute (LII). Marital Privilege
3
Cornell Law School Legal Information Institute (LII). Spousal Privilege
4
Justia. Obergefell v. Hodges, 576 U.S. 644 (2015)
5
Cornell Law School Legal Information Institute (LII). Federal Rules of Evidence Rule 501 – Privilege in General