Compliance · Sri Lanka
Voice Call Compliance in Sri Lanka
A practical overview of the rules that affect voice call messaging and marketing in Sri Lanka, with a checklist before you launch.
Key Rules for Voice Calls in Sri Lanka
Voice campaigns in Sri Lanka run through licensed operators and should be consent-based, scheduled at reasonable hours and in line with TRCSL requirements.
Voice campaigns should use locally permitted numbers and respect the regulator's rules on unsolicited calls.
Data Protection
Sri Lanka's Personal Data Protection Act No. 9 of 2022 is being brought into force in phases and sets requirements for lawful processing, consent and data subject rights, including the right to object to 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 +94 country code, remove duplicates and invalid numbers, and keep consent records linked to each number.
Timing and Language
Sri Lanka follows the Asia/Colombo time zone (UTC+05:30 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 Colombo, customers commonly use Sinhala, Tamil 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).
Digital Habits and Channels in Sri Lanka
Sri Lanka has high mobile use, and WhatsApp, Facebook and Viber are central to customer communication. Business SMS sender masks are arranged through the operators Dialog, Mobitel (SLT-Mobitel) and Hutch.
Cards, bank transfers and the LANKAQR standard are used, and cash on delivery remains common. The Sinhala and Tamil New Year in April, Vesak, Christmas and the tourism season from December to April shape demand. The Personal Data Protection Act No. 9 of 2022 introduces consent requirements.
Sri Lanka's economy relies on tea, garments, tourism and remittances, and it has been recovering since the 2022 economic crisis with support from an IMF programme. VAT is 18%, and prices are in Sri Lankan rupees. The Telecommunications Regulatory Commission (TRCSL) regulates operators and bulk messaging, and marketing usually needs Sinhala, Tamil and English versions.
Regulators, Registers and Practical Rules in Sri Lanka
Sri Lanka's Telecommunications Regulatory Commission (TRCSL) regulates telecoms and bulk SMS, and the Personal Data Protection Act No. 9 of 2022 is being brought into force in stages, with a Data Protection Authority set up to supervise it. Dialog, SLT-Mobitel, Hutch and Airtel are the operators (Airtel's local business has merged into Dialog).
Sinhala, Tamil and English are all used.
Alphanumeric sender masks for bulk SMS are registered through operators, and TRCSL has issued guidelines against unsolicited and fraudulent messages. Marketing should be sent only to opted-in contacts, with an easy opt-out. The Sinhala and Tamil New Year in April and the Christmas season are busy periods. Many customers prefer Sinhala or Tamil for service messages, with English common for banking and B2B.
General guidance, not legal advice. Check current rules with the regulator or a local adviser before launch.
Advertising Alongside Messaging
Advertising should follow Sri Lankan consumer protection law and platform policies, with sensitivity to cultural and religious norms.
This guide is general information, not legal advice, and reflects our understanding as of October 2026. Rules change, so we check current requirements for Sri Lanka before every launch.
Planning voice call campaigns for Sri Lanka?
We check the rules, set up sender requirements and run compliant campaigns.
Voice Call in Sri Lanka: FAQs
Do I need consent to send marketing voice call messages in Sri Lanka?
In most cases, yes, or at least an existing customer relationship and a clear opt-out. Voice campaigns in Sri Lanka run through licensed operators and should be consent-based, scheduled at reasonable hours and in line with TRCSL requirements.
Are automated voice calls allowed in Sri Lanka?
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 Sri Lanka?
Yes. We are based in Bhopal, India, and run campaigns for international markets remotely, after checking the current rules, sender requirements and coverage for Sri Lanka.
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 Sri Lanka
Voice Call rules in nearby markets
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