What Are the Legal Quiet Hours for SMS Marketing Texts in the US?

The compliance standard for SMS marketing in the US is 8am to 9pm in the recipient's local time zone — not the sender's. That window comes from the TCPA's quiet-hour rule at 47 C.F.R. § 64.1200(c)(1), which bars "telephone solicitations" outside those hours, and it's the baseline nearly every major SMS marketing platform builds into its send scheduling by default.

Where the Rule Actually Comes From

The 8am-9pm window isn't an SMS-specific statute — it's a long-standing telemarketing regulation under the Telephone Consumer Protection Act that predates text messaging. The FCC and courts have extended "telephone solicitation" to cover marketing text messages, which is why SMS platforms treat the same window as binding on texts. Transactional and informational messages — appointment reminders, shipping updates, two-factor authentication codes — are generally treated differently from marketing solicitations and typically fall outside this restriction, since they aren't trying to sell something.

The Legal Basis Is Being Actively Tested

This is worth being direct about: whether the quiet-hour rule cleanly applies to opt-in marketing texts is currently contested in litigation, not settled beyond dispute. A Florida-based plaintiff's firm has filed more than 100 putative class actions since 2024 alleging that marketing texts sent outside 8am-9pm violate the TCPA. At least one legal analysis argues that the regulation's definition of "telephone solicitation" excludes messages sent with the recipient's prior express invitation or permission — meaning texts to an opted-in list might fall outside the rule entirely. That defense hasn't been fully tested through the courts yet.

Some States Set Tighter Windows

A handful of states layer stricter hours on top of the federal baseline. Vendor compliance guides report that Florida, Connecticut, Maryland, Oklahoma, and Washington limit texts to 8am-8pm local time — an hour tighter at the end of the day than the federal rule. Texas is reported to run a different schedule entirely: 9am-9pm Monday through Saturday, and noon-9pm on Sundays. Because state rules change and vary by source, verify the current requirement for any state you're texting into rather than assuming the federal window covers you everywhere.

What This Means for Your Send Schedule

Because the restriction is based on the recipient's local time zone, not yours, a national list sending at a single fixed time will violate the window for recipients in earlier time zones unless your platform segments sends by recipient location. Most dedicated SMS marketing platforms (Attentive, Postscript, Klaviyo SMS) handle this time-zone segmentation automatically, but a message sent manually or through a generic messaging API needs that logic built in explicitly.

Bottom Line

Schedule every marketing text for delivery between 8am and 9pm in the recipient's own time zone, check for stricter state-level windows if you're texting into Florida, Connecticut, Maryland, Oklahoma, Washington, or Texas, and don't treat opt-in consent as a settled defense against the quiet-hour rule until the current class-action litigation resolves.

Sources: 47 C.F.R. § 64.1200(c)(1), the FCC's telephone solicitation quiet-hour rule; Buchalter legal analysis, "One Florida Firm is Targeting Ecommerce Brands With TCPA Class Actions..." (buchalter.com); Privacy World legal blog, "New Class Action Threat: TCPA Quiet Hours and Marketing Messages" (privacyworld.blog).