Roughly a dozen US states require everyone on a call to agree before it is recorded. The rest, plus federal law, only require one person to agree, and that person can be you. A business that records every call and says so in the first few seconds is safe in nearly all of them. The risk comes from recording quietly, or from forgetting that the other person's state may have the stricter rule.

This is general information, not legal advice. State laws differ in the details and change, so check yours, and ask a lawyer before you build a recording habit around anything sensitive.

One-party and all-party consent

Federal law (the Wiretap Act) allows you to record a call if you are part of it, or if one person on the call has agreed. That is "one-party consent." Most states follow it.

A group of states goes further and requires "all-party consent": everybody on the call has to know and agree. Lists vary by source and by year, but the states most often named are California, Florida, Illinois, Maryland, Massachusetts, Montana, New Hampshire, Pennsylvania and Washington, with a few more depending on the type of call. Do not trust a list you found on a blog, including this one. Look up your own state's statute, and the states your callers live in.

In practice nobody agrees in writing. The standard is notice. If you tell the caller the call is recorded and they keep talking, courts have generally treated that as consent. That is why the sentence in the section after next matters more than anything else on this page.

The call that crosses a state line

This is the part most guides skip. Say Halvorsen Tile & Stone, a small installer in Columbus, Ohio, records every call. Ohio is a one-party state, so recording a call with another Ohioan is fine even without a notice. Then a homeowner phones from Pittsburgh. Pennsylvania requires all parties to consent.

Which law applies? There is no tidy answer. Courts have applied the stricter state's law when a company records calls with people in that state, and California's courts have done this to out-of-state companies. The safe habit costs nothing: assume the stricter rule applies to every call, and give the notice every time. Halvorsen does not need to track which state each caller is in. It plays or says the notice on all of them.

The sentence to say

Say it early, in plain words, before anything personal is discussed. Three versions that work:

  • A person answering: "Thanks for calling Halvorsen Tile. This call may be recorded so we get your details right. How can I help?"
  • An AI assistant answering: "You've reached Halvorsen Tile. I'm an AI assistant, and this call is recorded so we can take accurate notes for the team. How can I help?"
  • You calling out: "Hi, this is Dan from Halvorsen Tile. I'm calling you back about the kitchen floor. This call is being recorded. Is now a good time?"

Notice what the lines do not say. They do not say "for training purposes" if you never train anyone. They do not promise to delete the recording unless you will. Say the real reason, because a vague line that turns out to be false is worse than no line.

Add one more sentence if someone objects: "No problem. I'll stop the recording and take notes by hand." Only offer it if you can do it. If your system records no matter what, say instead, "I understand. If you'd rather not be recorded, you can email us at the address on our site." Then follow through.

When an AI answers the phone

Recording rules do not change because the voice is software. The caller still needs notice, and a notice from the AI is the cleanest way to give it. If an AI assistant answers your forwarded business number, set its opening line to include the recording notice, and test it by calling your own number. How the forwarding works is in forward your business number to AI, and can AI answer my business phone covers what happens on a call.

One newer wrinkle is worth knowing. In California in particular, some lawsuits have argued that an outside company whose software listens to or processes call audio is a third party eavesdropping on the call. Courts have not settled it. It does not mean you cannot use a phone vendor. It means you should read the vendor's terms on how audio is used, ask whether it is used to train their models, and make sure your notice says the call is recorded and handled by an AI service. If you are on the fence about the tradeoffs of AI answering generally, reasons not to buy an AI receptionist is a fair read, and will callers mind AI answering deals with how people react to the disclosure.

Keeping recordings safely

A recording is a copy of a stranger's voice, sometimes with a home address and a phone number in it. Treat it like a customer file. Four habits cover most of the risk:

  • Decide how long to keep recordings and delete after that. Ninety days is common for sales and scheduling calls. Keep a call longer only when it is part of a dispute or a signed job.
  • Limit who can listen. Two or three named people, not a shared password on a sticky note.
  • Do not record card numbers. Send a payment link or take payment on a separate line. If a caller starts reading digits, stop them and offer the link.
  • Delete a recording when the caller asks, unless you are required to keep it, and write down that you did.

If a transcript is stored beside the audio, the same rules apply to the text. Phone systems that email transcripts put them in inboxes you may forget about, which is another reason to pick a retention period. A practice that handles patient calls has a heavier set of obligations; answering service for a medical office lists the questions to ask a vendor.

Cases where a lawyer's hour pays off

Skip the guesswork when any of these is true. You record calls with patients, clients of a law or financial practice, or anyone about health, money or a legal matter. You record employees, which carries its own notice rules. You call or receive calls from outside the US, where Canada, the EU and the UK have different regimes. You plan to use recordings in marketing or to train AI models. Or the calls are the only evidence of a deal worth real money. A one-hour consult with a business lawyer in your state is cheap next to a lawsuit, and several states let people sue for every unlawful recording.

If you are also making outbound calls, the recording rules are only one piece; is AI cold calling legal covers consent, do-not-call lists and calling hours.

Rocketship's phone worker answers the number you already have and keeps the call as a recording and a transcript you can read, so the notice and the retention habits above apply to it like any other recorded line. Rocketship finds the buyers, emails them from your own Gmail, follows up, and books the meeting on its own. Plans that get you customers start at $24.99 a month (Launch), and both Launch and Frontier start with a 7-day free trial, card required. Answering your existing number works on Launch, with call minutes bought as you go ($15 for 50), and a dedicated line is $5 a month.