How to record a verbal agreement

What a verbal agreement actually is

In many countries a spoken agreement can be a real contract. There is nothing magic about a signature. Common law courts generally look for a clear offer, acceptance of it, something of value moving both ways (lawyers call that consideration), an intention to be legally bound, and terms definite enough that a stranger could tell what each side promised. Civil law systems, including Quebec's, approach this differently and do not require that exchange of value in the same way.

Definiteness is where casual deals fall apart. "I'll help you move and you'll sort me out" is the kind of promise a court may find too uncertain to enforce, because "sort me out" has no content. "I'll help you move on Saturday the 14th at 9am, and you'll pay me $200 cash that day" at least gives someone reading it later something definite to work with.

Some agreements will not be enforced unless they are in writing, however clearly they were spoken. Categories vary by place but commonly include real estate, agreements that cannot be performed within a year, promises to answer for someone else's debt, and, in the United States, sales of goods above a threshold set by the Uniform Commercial Code. Common law jurisdictions often group these under the Statute of Frauds, though several Canadian provinces have repealed or narrowed it and Quebec's civil law handles the question differently. A recording is not a writing, so on its own it generally will not satisfy a rule of that kind. There are exceptions in some places and circumstances, which is exactly why this is a question for a lawyer rather than a web page.

Memory is the weak point, not honesty

Many disputes over spoken agreements are not fraud. Two people leave the same conversation holding different versions of it, both sincerely. One remembers "by the end of the month" and the other "by the end of next month", and six weeks later neither has anything to check against. So the real job of a recording is not to catch someone lying. It is to remove the need for anyone to remember. It also improves the conversation as it happens, because people tend to be more precise about dates and amounts when they know the words are being kept.

Before you press record: the consent question

This is the part most guides skim past, and the part most likely to hurt you. Recording a conversation is regulated almost everywhere, and the rules are not intuitive. What follows is the shape of those rules, not a ruling about your situation. Published lists disagree with one another, some statutes are ambiguous and courts have read them differently, and a summary on a website is not a legal opinion. That includes this one.

Broadly, the rules come in two shapes.

• One-party consent. In some places, if you are part of the conversation your own participation can satisfy the criminal rule. Canada's section 184 of the Criminal Code makes intercepting a private communication an offence, with an exception where a party to it consents. But the criminal rule is not the whole rule: several provinces have their own privacy statutes and torts, Quebec's Civil Code and Charter protect privacy separately, and privacy law applies on top once a recording is commercial rather than personal. Clearing the criminal bar does not mean you are clear. The US federal wiretap statute takes a similar participant-consent approach, with an important carve-out: it does not protect a recording made for the purpose of committing a crime or a tort. State law sits on top of it and can be stricter, and the stricter rule is the one that binds you.
• All-party consent. Everyone has to agree before the conversation can be recorded. About a dozen US states are commonly described this way, but the published lists disagree with each other and some of the underlying statutes have been struck down and rewritten. This page deliberately does not name them, because naming five and omitting the sixth is how people get caught. Look up your own state, province or country from a source that cites the statute. The common label "two-party consent" is misleading either way: on a five-person call, all five have to agree.

Then there are the edges, which is where people actually get caught.

• Some places split the rule by medium, treating an in-person conversation differently from a phone call. Whether yours does is not something you can infer from how the rule works elsewhere.
• A call that crosses a border raises the question of whose law applies. The stricter rule is the safer assumption.
• In the EU and the UK, wiretap rules are only half the picture. The GDPR and UK GDPR apply to recordings of identifiable people as well. There is an exemption for purely personal or household activity, but it is read narrowly and falls away once anything commercial is involved.
• Workplaces, tenancies, medical settings and family matters often carry further rules of their own.

An unlawful recording can expose you to criminal liability or a civil claim, and it can also be excluded as evidence, so you can take the risk and still end up with nothing you can use.

Nobody should tell you that recording is legal where you live, because the answer turns on where you are, who is present, and what is being recorded. What can be said is that asking everyone, out loud, on the recording, before you discuss anything is the most cautious approach available to you, and it is the version you would rather have a judge hear. It is not a universal permission slip. Some settings restrict recording whatever anyone consents to, and anyone who joins later has not agreed to anything yet, so ask again.

To check your own rule, go to the statute rather than to a blog. In Canada that is section 184 of the Criminal Code, plus your province's privacy legislation. In the United States it is 18 U.S.C. § 2511 federally, plus your own state's wiretapping or eavesdropping statute, and the Reporters Committee for Freedom of the Press publishes a free state-by-state recording guide that cites the section numbers so you can read the law itself. In the UK, the Information Commissioner's Office covers the data protection side. If money or a job depends on the answer, pay a lawyer for an hour.

Recording it in practice

In person, the recorder already on your phone is fine: Voice Memos on iPhone, Recorder or its equivalent on Android. Put the phone flat on the table between you rather than in a pocket, and test it by recording ten seconds and playing them back before the conversation starts.

Phone calls are deliberately harder. Google's Play policy has blocked third-party apps from recording calls through the accessibility APIs since May 2022, and Apple's own call recording, added in iOS 18.1, plays an announcement to everyone on the line before it starts. Treat that announcement as a feature: it is your consent step, and it is on the recording. An app offering to record a call silently is telling you something about the app, and possibly about the law where you are.

On a video call, use the platform's own recording button. Zoom, Google Meet and Microsoft Teams each notify participants when recording starts and save the file with the platform's own timestamp, which is worth more later than a phone pointed at a laptop speaker. Availability, and how the notice appears, depend on your plan and the host's settings, so test before the call rather than during it.

How to record a verbal agreement, step by step

1. Ask first, on the recording

Start recording, then say what you are doing and why, and ask each person by name whether they agree. Wait for an audible answer from each. "Is everyone okay with me recording this so we both have the same version later?" is a clear way to ask. Do not move on until you have the yes. If someone says no, stop.

2. Fix the moment

Say the date, the time, and where you are or which platform you are on. That makes the file self-describing a year later, when its own timestamp is what is being argued about.

3. Name everyone

Have each person say their own full name. A voice that identifies itself is far easier to attribute later.

4. State the terms in full, slowly

Who does what, how much, by when, and how payment happens. Use calendar dates rather than "next week", numbers rather than "the usual rate", and name the currency. If something is conditional, say the condition out loud rather than leaving it understood.

5. Cover the parts people skip

Agreements often cover price and deadline and stop there, and the disputes come from the gaps. Say out loud what happens if either side cancels, who pays for materials and shipping, whether the price includes tax, what counts as finished in a way you could check, and who owns the result if the work produces something that can be owned.

6. Say what each side is giving

In common law systems contracts generally need value moving both ways, so make it explicit: "In exchange for the $200, you're giving me the trailer and the spare wheel." It takes five seconds and closes off the argument that one side was making a gift.

7. Get agreement in their own words

Do not settle for a grunt or a silence. Ask directly: "Have I got that right, and do you agree to it?" Let the other person answer in full sentences, and let them correct you. A correction captured on the recording is worth more than a clean recording of the wrong terms.

8. Close it deliberately

Repeat the headline terms once, ask whether anything has been missed, then say you are ending the recording. The same day, send a short written summary and ask the other person to confirm it. A recording plus a written "yes, that's right" is usually more useful than either alone.

What to do with the file afterwards

A recording that no longer exists, or that has obviously been through an editor, is not much use.

• Keep the original untouched. If you want a trimmed version, export a copy and leave the original alone. Visible editing invites the claim that something was cut.
• Get it off the phone the same day. Phones get lost, dropped, wiped and traded in. Emailing the file to yourself and to the other person does two jobs at once: it puts a dated copy in a system neither of you controls, and it puts the other side on notice that the recording exists, which is harder to object to later than a recording produced for the first time mid-argument.
• Compute a checksum while the file is fresh, so you can compare the file later against the value you noted. On Windows, run certutil -hashfile recording.m4a SHA256. On macOS, shasum -a 256 recording.m4a. On Linux, sha256sum recording.m4a. On its own a hash is weak, because one you calculated and kept yourself could have been calculated after an edit. It is worth more if the value was recorded somewhere independently datable, such as an email you sent yourself the same day.
• Keep a short handling log: who has had the file, where copies went, and when. That is what people mean by chain of custody.
• Transcribe it while your memory is good, label the transcript as a transcript, and timestamp the important lines.
• Do not publish it. Sharing a recording of someone can create privacy problems of its own, separately from whether making it was lawful.

What a recording can and cannot prove

Recordings are often oversold. One can be useful evidence that a conversation took place and roughly what was said. It is much weaker on what each person understood, whether they had authority to agree, and whether the terms were varied afterwards in a call nobody captured.

Lawfulness and admissibility are also separate questions. Even a lawful recording typically has to be authenticated before a court will rely on it, which in many places means someone who was present testifying that it is complete, accurate, and unaltered. If authenticity is challenged, that can mean forensic examination and expert evidence.

Partial recordings are weak: one that starts halfway through invites the claim that the important part is the part you did not keep. Poor audio is weak too, so listen back before you count on one. And nobody can promise that a court, tribunal or arbitrator will accept a record or give it weight. Rules of evidence vary by jurisdiction and by case, and any product that guarantees otherwise is overstating what it can do.

When to stop recording and write it down

A recording is a sensible backup for a small, ordinary agreement between people who broadly trust each other. It is a poor substitute for a signed document once anything is at stake, because both sides read the same words before committing, the terms are fixed rather than reconstructed, and courts and insurers handle signed documents every day.

Move to writing when losing the money would matter, when the arrangement runs for months rather than an afternoon, when property, employment or ownership of work is involved, or when the deal might fall inside the writing requirements above. Also move to writing whenever you catch yourself thinking you would hire a lawyer if this went wrong. At that point, hire one first.

How Twerll fits

Twerll is an agreement app, free in early access, with no payments collected. What it is not: a call recorder. It captures a voice note or a video as the agreement itself, and it does not sit in the background of a conversation you are having somewhere else. It also does not handle any of the consent questions above. Twerll does not ask anyone's permission for you, and using it does not make a recording lawful where it otherwise would not be.

What it covers is the part after the conversation. You can capture an agreement as text, a voice note, or a video, with both people tapping to agree inside one shared record, or generate a signable PDF and sign by drawing or typing your name, with the signing method and time recorded. Because both sides act inside the same record, each person's agreement to the terms is captured as a step rather than reconstructed later. That is agreement to the deal, not consent to being recorded. Requests go out by link, QR code, or email, and the other side can sign as a guest without an account. Sealed files sit in the Evidence Vault, which stores them with integrity hashes and a chain-of-custody ledger, designed to help show that a file has not changed since sealing. That covers agreements made inside Twerll: a recording from your own phone still needs the hashing and handling log above. A completed document gets a certificate showing who signed, when, and how they were verified, which you can share read-only, though anyone holding its verification details can check it, so share one deliberately. It runs in a browser, so you can open the web app and try it.

What it does not do matters just as much. It does not verify government ID, so it cannot promise a signer is who they claim to be. Some documents cannot be signed electronically at all in some places, including wills, certain family and property documents, court filings, and anything needing notarization, and confirming that electronic signature is permitted for your document where you are is your responsibility rather than the app's, as the terms set out. Twerll is not a law firm, gives no legal advice, and is not a party to your agreements. Its AI features run on Anthropic's Claude models under terms that forbid training on user content, and their output is not legal advice either. The limit on court acceptance above applies here too, and how files and signing records are stored is in the privacy policy.

Where this page stops

Recording law and contract law both change, and both vary by country and by state or province. Illinois had its eavesdropping statute struck down and rewritten in 2014, and phone platforms change what recording they permit every couple of years, so check the date at the top of this page against the law today. Nothing here is legal advice. If the agreement matters, talk to a licensed lawyer where you are.