Can I record my co-parent in Montana?

Knowledge, not permission

Montana's test is knowledge. Everyone in the conversation must know it is being recorded. They do not have to agree to it.

That makes Montana stricter than one-party states and simpler than consent states. The question is whether anyone was kept in the dark.

The statute's wording

MCA 45-8-213 covers a person who "records or causes to be recorded a conversation by use of a hidden electronic or mechanical device". The recording must reproduce a human conversation "without the knowledge of all parties to the conversation".

Both parts matter. The device is hidden, and someone does not know.

The warning exception

Subsection (2)(a)(iii) takes "persons given warning of the transcription or recording" outside the rule. It adds: "If one person provides the warning, either party may record."

So a parent can start a call with a clear warning that it is being recorded. Keep a note of the exact words and the time. That note may matter later.

What sits outside the warning

A phone recording silently in your pocket at a handover is a hidden device. A recorder slipped into the other parent's car is too.

Neither comes with a warning. A conviction under the hidden-recording subsection can bring up to six months in county jail, a $500 fine, or both. Federal law may also apply to recordings made where you are not a party.

Your child's calls

A call between your child and the other parent is one you are not part of. Recording it secretly would fail Montana's knowledge test.

Some courts let a parent consent for a young child under Pollock v. Pollock. Montana's rule is about knowledge, not consent, so that doctrine fits awkwardly. Take advice before recording anything involving your child.

Public places

The rule covers hidden devices in any conversation, not only private ones. It does exempt people speaking at public meetings.

A handover in a car park is not a public meeting. A hidden device there can still fall inside the rule. An open warning is the simple fix.

What a Montana court is weighing

Montana builds parenting plans around the child's best interests. Judges look at how each parent cooperates and communicates.

A warned, open recording can be defended. Hidden ones can suggest the opposite of cooperation. Clear written notes avoid that question.

What to keep instead

Write events down the same day, with the clock time, the words in quotation marks and who was present. Written notes are not hidden devices.

A call log for custody records keeps calls in order. A factual incident report covers single events. Take both to a Montana family lawyer.

A Montana parenting note, with any warning written down

Montana turns on whether everyone knew. A written note keeps that clear. Write it the same day.

Print checklist

• Time it to the minuteNote the date and clock time you are writing, and the date and clock time of the event itself.
• Quote, don't summarisePut the words you actually heard inside quotation marks. Mark anything you are paraphrasing as a paraphrase.
• Name who else was thereList every adult and child present, and anyone within earshot who is not part of the family.
• Separate what your child saidRecord a child's words as reported speech, and never question a child again to sharpen a quote.
• Record the warningIf you warned the other parent you were recording, write the exact words and the time you said them.
• Point at the corroborationName the message, receipt, school note or third party that supports the entry, and say where it is kept.

Is Montana a one-party or two-party consent state?

Montana uses a knowledge test. MCA 45-8-213 bars recording with a hidden device without the knowledge of all parties, so it works like an all-party rule for secret recordings.

Can I record my co-parent if I warn them in Montana?

Yes. The rule does not apply to persons given warning, and if one person provides the warning, either party may record.

What is the penalty for secret recording in Montana?

Violating privacy in communications is a misdemeanor under MCA 45-8-213, with higher penalties for repeat convictions.

Can I secretly record a handover in public in Montana?

The rule covers hidden devices without the knowledge of all parties, and only exempts people speaking at public meetings. Give a warning instead.

Can I record my child's calls with their other parent in Montana?

That is a conversation you are not part of. A secret recording would fail the knowledge test, so take advice first.

Sources

This page quotes Montana Code Annotated 45-8-213 from the Montana Legislature's official site. It explains the law and is not legal advice.

• MCA 45-8-213 — privacy in communications, hidden devices and the warning exception checked September 2026
• Reporters Committee for Freedom of the Press — Montana recording guide and penalties checked September 2026
• Pollock v. Pollock, 154 F.3d 601 (6th Cir. 1998) — the vicarious consent doctrine checked September 2026
• 18 U.S.C. 2511(2)(d) — the federal one-party consent floor and its criminal-or-tortious-purpose proviso checked September 2026

Keep reading

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