Compliance · Thailand
Voice Call Compliance in Thailand
A practical overview of the rules that affect voice call messaging and marketing in Thailand, with a checklist before you launch.
Key Rules for Voice Calls in Thailand
Telemarketing in Thailand must comply with the Personal Data Protection Act and consumer protection rules, and operators apply anti-scam call screening.
Some Asian markets operate do-not-call registers for marketing calls and messages, so lists should be checked before voice campaigns.
Data Protection
Thailand's Personal Data Protection Act B.E. 2562 (2019), fully enforced since June 2022, requires clear privacy notices and, in most cases, consent for direct marketing.
Keep a record of how each contact was collected, what they agreed to and when, and make it easy for them to withdraw consent.
Practical Checklist
- Check whether the call is promotional or a service call, as the rules differ.
- Use permitted calling numbers and caller ID, and never hide or spoof the calling number.
- Screen numbers against any national do-not-call register before promotional campaigns.
- Call only within permitted hours in the recipient's time zone and keep recorded messages short.
- Offer an easy way to stop further calls and record call consent where required.
Contact data
Format numbers in international E.164 format with the +66 country code, remove duplicates and invalid numbers, and keep consent records linked to each number.
Timing and Language
Thailand follows the Asia/Bangkok time zone (UTC+07:00 in October 2026). The usual working week is Monday to Friday. Schedule voice call campaigns for the recipient's local daytime hours, avoid public holidays and religious observances that matter to your audience, and convert send times from IST before scheduling.
In Bangkok, customers commonly use Thai and English. Messages in the customer's preferred language usually perform better, but check how local-language text affects character counts (for SMS) and template approval (for WhatsApp).
Advertising Alongside Messaging
Advertising must follow the Consumer Protection Act and platform policies; health, food and especially alcohol advertising face strict rules.
This guide is general information, not legal advice, and reflects our understanding as of October 2026. Rules change, so we check current requirements for Thailand before every launch.
Planning voice call campaigns for Thailand?
We check the rules, set up sender requirements and run compliant campaigns.
Voice Call in Thailand: FAQs
Do I need consent to send marketing voice call messages in Thailand?
In most cases, yes, or at least an existing customer relationship and a clear opt-out. Telemarketing in Thailand must comply with the Personal Data Protection Act and consumer protection rules, and operators apply anti-scam call screening.
Are automated voice calls allowed in Thailand?
Automated and prerecorded calls are usually more tightly regulated than live calls. Check consent, calling hours and any national do-not-call register before a campaign.
Can DND Teams run voice call campaigns to Thailand?
Yes. We are based in Bhopal, India, and run campaigns for international markets remotely, after checking the current rules, sender requirements and coverage for Thailand.
Is this legal advice?
No. This guide is general information to help you plan. Regulations change and their application depends on your business, so take local legal advice for significant campaigns.
Related Guides and Services
Other channels in Thailand
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