Compliance guides
Messaging Compliance in Sri Lanka
SMS, WhatsApp, voice and RCS rules for businesses messaging customers in Sri Lanka.
Overview
Telecom services in Sri Lanka are regulated by the Telecommunications Regulatory Commission of Sri Lanka (TRCSL). Bulk SMS sender masks are registered through the mobile operators, and promotional messages should be consent-based with an opt-out.
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.
Search in Sri Lanka uses English, Sinhala and Tamil, and Facebook and WhatsApp are central to how customers discover and contact businesses.
WhatsApp is widely used for business across South Asia, and Meta's opt-in and template rules apply in every country.
Voice campaigns should use locally permitted numbers and respect the regulator's rules on unsolicited calls.
Advertising Rules
Advertising should follow Sri Lankan consumer protection law and platform policies, with sensitivity to cultural and religious norms.
Guides by Channel
SMS in Sri Lanka
Telecom services in Sri Lanka are regulated by the Telecommunications Regulatory Commission of Sri Lanka (TRCSL).
Read the guide →WhatsApp in Sri Lanka
WhatsApp and Viber are widely used in Sri Lanka.
Read the guide →Voice Call 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..
Read the guide →RCS in Sri Lanka
RCS business messaging availability in Sri Lanka depends on operator and device support, so we confirm coverage before planning campaigns and keep SMS as a fallback; the same consent rules that apply to SMS apply to RCS..
Read the guide →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.
Compliance in Sri Lanka: FAQs
Which messaging channels need registration in Sri Lanka?
It depends on the channel. Sender IDs for SMS often need registration with operators or the regulator, WhatsApp requires a verified business account and approved templates, and RCS needs brand verification. Each channel guide explains the details.
Does data protection law apply to messaging in Sri Lanka?
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.
Is this legal advice?
No. These guides are general information. For significant campaigns, take advice from a local lawyer.
Plan Compliant Campaigns in Sri Lanka
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