Auto dialers are legal. What the law regulates is which calls you make with them — and with whose consent.
TCPA Autodialer Rules: When Auto Dialers Are Legal — and When They Aren’t
Are auto dialers illegal? No. The TCPA does not ban dialing software — it regulates conduct: what plays when someone answers (a live agent versus an artificial, prerecorded, or AI voice), whether the call is marketing or informational, and whether the number is a cell or a landline. Get those three variables right and auto dialing is lawful; get them wrong and each call carries $500 to $1,500 in statutory exposure under 47 U.S.C. § 227(b)(3). Here is the consent matrix by call type, the autodialer definition courts actually apply, and the state wrinkles — as of July 2026.
This page is education, not legal advice. The dialer itself is compliant software — compliance depends on how you use it: your lists, your consent records, your call types. Enzo does not scrub against national or state DNC registries — run every list through a third-party scrubbing service before uploading. Consult a TCPA attorney about your specific program.
What the TCPA Actually Restricts
The TCPA never says “auto dialers are prohibited.” It restricts conduct: ATDS or artificial/prerecorded-voice calls to wireless numbers without the required consent, prerecorded telemarketing to residential lines without written consent, solicitations to numbers on the National Do-Not-Call Registry without an exemption, and solicitations outside 8 a.m.–9 p.m. at the called party’s location.
Everything else — a live, manually dialed, non-prerecorded sales call to a number not on the DNC registry, inside legal hours — requires no prior consent under federal law. The stakes sit in the private right of action: $500 per call under 47 U.S.C. § 227(b)(3), up to $1,500 for willful or knowing violations, no proof of injury required, with courts applying the federal four-year catch-all limitations period under 28 U.S.C. § 1658(a). The full penalty picture lives in TCPA for cold callers.
What Counts as an Autodialer After Facebook v. Duguid
In Facebook v. Duguid (2021), a unanimous Supreme Court held that equipment is an ATDS only if it has the capacity to store or produce telephone numbers using a random or sequential number generator. Dialing automatically from a stored lead list, by itself, does not satisfy the definition in most courts’ post-Duguid reading.
That “most courts” matters: the area remains unsettled — the Second Circuit has read the definition more broadly for stored numbers — so whether a given predictive or power dialer is an ATDS depends on the court, as of July 2026; ask a TCPA attorney before relying on it. The full breakdown, including the circuit split, is in what an ATDS is.
Two constants survive the definitional fight. Artificial and prerecorded-voice restrictions apply separately, whatever dialer places the call. And the FCC’s unanimous February 8, 2024 declaratory ruling (FCC 24-17) holds that AI-generated and cloned voices are “artificial” voices under the TCPA — AI-voice telemarketing needs prior express written consent, same as a recording.
The Consent Matrix: What Each Call Type Requires
Federal consent runs in tiers (47 C.F.R. § 64.1200(a)(1)–(3)). Match the row to your campaign before anyone dials:
| Call type | Number called | Federal consent required | Cite |
|---|---|---|---|
| Marketing call using an ATDS or artificial/prerecorded/AI voice | Cell phone | Prior express written consent (PEWC) | 47 C.F.R. § 64.1200(a)(2) |
| Artificial/prerecorded/AI-voice marketing call | Residential landline | Prior express written consent (PEWC) | 47 C.F.R. § 64.1200(a)(3) |
| Informational (non-marketing) autodialed or prerecorded call | Cell phone | Prior express consent — need not be written | 47 C.F.R. § 64.1200(a)(1) |
| Live agent, manually launched, no prerecorded voice | Cell or landline not on the DNC registry | No prior consent under federal law; quiet hours and caller ID rules still apply | 47 C.F.R. § 64.1200(c)(1), (d)(4) |
| Telephone solicitation, any dialing method | Number on the National DNC Registry | Off-limits without an exemption — an established business relationship (purchase within 18 months or inquiry within 3 months) or the person’s prior express invitation or permission, evidenced by a signed written agreement (47 C.F.R. § 64.1200(c)(2)(ii)) | 47 C.F.R. § 64.1200(c)(2), (f)(5) |
Three notes on reading the matrix. PEWC (47 C.F.R. § 64.1200(f)(9)) is a written agreement, bearing the signature of the person called, clearly authorizing marketing by ATDS or artificial/prerecorded voice to a designated number — capturing it cleanly is covered in the express written consent guide. The established business relationship is a DNC exemption only — it never substitutes for PEWC on autodialed or prerecorded marketing to a cell. And the FCC’s one-to-one consent rule never took effect — vacated January 24, 2025 in Insurance Marketing Coalition v. FCC, deleted from the CFR effective August 29, 2025 — so bundled multi-seller lead-gen consent is again permissible federally, though state mini-TCPA laws may impose stricter consent rules of their own.
The Rules That Apply No Matter What Dialer You Run
Winning the ATDS argument does not exempt a calling program from the rest of the federal rulebook:
- Quiet hours. No telephone solicitation before 8 a.m. or after 9 p.m., local time at the called party’s location — the caller bears the burden of determining that time, with no weekend or holiday exception (47 C.F.R. § 64.1200(c)(1)).
- The 31-day DNC scrub. The safe harbor requires registry data obtained no more than 31 days before any call, plus documented written procedures and training (47 C.F.R. § 64.1200(c)(2)(i)(D)).
- Revocation. Effective April 11, 2025, consumers may revoke consent in any reasonable manner — “stop,” “quit,” “end,” “revoke,” “opt out,” “cancel,” and “unsubscribe” all count — and callers must honor it within ten business days (47 C.F.R. § 64.1200(a)(10)). The related “revoke-all” provision is waived until January 31, 2027 and under active FCC reconsideration — it could change again; check FCC.gov.
- Internal DNC. A written policy, trained personnel, requests recorded when made and honored within ten business days, each kept for five years (47 C.F.R. § 64.1200(d)).
- Identification. State the caller’s name, the company, and a contact number or address on telemarketing calls (47 C.F.R. § 64.1200(d)(4)).
- No blanket B2B pass. Autodialed and prerecorded-voice restrictions attach to any wireless number regardless of business use — a decision-maker’s personal cell is covered.
State Auto Dialer Laws: Broader Triggers Than the Federal Test
A handful of states wrote their own autodialer definitions — several deliberately skipped the random-or-sequential-generator element that narrowed the federal test:
- Florida requires prior express written consent for sales calls involving “an automated system for the selection and dialing of telephone numbers” or a recorded message (Fla. Stat. § 501.059(8)(a)), with a private right of action at $500 per violation, trebled up to $1,500 for willful or knowing conduct.
- Oklahoma triggers on an automated system for the selection or dialing of numbers (15 O.S. § 775C.3(A)) — the broader, disjunctive standard.
- Maryland’s Stop the Spam Calls Act (effective January 1, 2024) uses the same “selection or dialing” formulation (Md. Com. Law § 14-4502(a)(3)).
The disjunctive statutes may cover list-based dialers that are not federal autodialers — no appellate court has settled how far “automated system” reaches, so ask counsel before treating a Duguid win as a fifty-state pass. Florida and Oklahoma add a rebuttable presumption that a call to one of their area codes reaches someone in the state — your list’s area codes, not your office location, decide which statutes apply. The full picture is in state mini-TCPA laws.
The Operator’s Checklist Before an Autodialed Campaign
- Classify the campaign — marketing or informational. If any part of the call pitches a product, treat it all as marketing.
- Map the numbers — cells versus landlines, and which states the area codes put in play.
- Match consent to the matrix — PEWC records for anything automated-plus-marketing, retrievable per number.
- Scrub inside 31 days — national registry, state lists, and your internal DNC file — third-party scrub before the list touches a dialer.
- Schedule by the prospect’s location — 8 a.m.–9 p.m. where they are, tighter where state law says so.
- Honor opt-outs within ten business days — and log the date each request came in.
Where Enzo Fits — and Where It Doesn’t
Enzo runs power, predictive, preview, single-line, and multi-line dialing — all agent-driven: live calls for human agents, no prerecorded messages played at anyone. Its compliance role is deliberately narrow: campaign-level internal DNC. Mark a contact DNC and they stay excluded from that campaign — but marks do not carry across campaigns, so keep your master suppression list outside the dialer and re-apply it to every new campaign. Enzo does not scrub against national or state DNC registries: third-party scrub first, then import the clean file. No dialer makes your calling lawful — compliance depends on your lists, your consent records, and your habits.
Auto dialers are legal; undisciplined calling programs get sued. Classify each campaign, hold the consent records the matrix requires, scrub on the 31-day clock, dial inside the window, honor opt-outs on time — then have a TCPA attorney check the result against the states you call. See how agent-driven dialing and campaign-level DNC work in practice — book a free discovery call.
Not legal advice. This guide is general information for outbound calling teams, not legal advice. Rules change and apply differently by state, industry, and call type — confirm your program with qualified telemarketing compliance counsel.
Sources: 47 U.S.C. § 227; 47 C.F.R. § 64.1200; 28 U.S.C. § 1658(a); Facebook, Inc. v. Duguid, 593 U.S. 395 (2021); Insurance Marketing Coalition Ltd. v. FCC (11th Cir. 2025); FCC 24-17 and FCC 24-24; Fla. Stat. § 501.059; 15 O.S. § 775C; Md. Com. Law § 14-4502 — as of July 2026. Educational only, not legal advice.