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PDPA and Telemarketing in Singapore: DNC Compliance and Best Practices for 2026

Telemarketing remains a viable channel for businesses in Singapore, particularly in B2B sales, financial services, insurance, real estate and telecommunications — industries where personal engagement and consultative selling drive conversions. However, telemarketing is also the most regulated marketing channel under Singapore’s Personal Data Protection Act (PDPA), subject to the Do Not Call (DNC) registry provisions, strict consent requirements, calling hour restrictions and substantial penalties for non-compliance. In 2026, running a successful telemarketing operation in Singapore requires an equal commitment to compliance and commercial effectiveness.

The DNC provisions of the PDPA were introduced specifically in response to consumer complaints about unwanted telemarketing calls — and the Personal Data Protection Commission (PDPC) has been consistently active in enforcing these provisions since their introduction. The DNC registry now contains millions of registered Singapore telephone numbers across its three registers, making compliance not just a legal obligation but a practical necessity. Calling a DNC-registered number without valid exemption is a violation that can result in financial penalties of up to S$1 million, and the PDPC publishes enforcement decisions that can cause reputational damage beyond the financial penalty itself.

This guide covers everything you need to run a PDPA-compliant telemarketing operation in Singapore — from the three types of DNC registers and how to check them, to the exemptions that may apply, calling hour restrictions, consent requirements, penalty exposure, and the operational framework that ensures your digital marketing and telemarketing activities remain compliant.

DNC Registry Types Explained

Singapore’s DNC registry comprises three separate registers, each covering a different communication channel. Understanding which register applies to your telemarketing activities is the first step toward compliance. The three registers are: the No Voice Call register, the No Text Message register, and the No Fax Message register. Each register operates independently — a number may be registered on one, two, or all three registers, and you must check the specific register relevant to your intended communication method.

The No Voice Call register is the primary register relevant to traditional telemarketing. Numbers registered on this list must not be called for the purpose of making or sending marketing voice calls, including both live agent calls and pre-recorded or automated voice messages. The No Text Message register covers SMS and MMS marketing messages — relevant if your telemarketing operation includes an SMS component. The No Fax Message register covers marketing faxes, which, while less common in 2026, remains relevant for certain B2B communications.

Individuals can register their Singapore telephone numbers on any or all three registers through the DNC registry website or by calling the DNC hotline. Registration is free and takes effect within the timeframe specified by the PDPC. Once registered, the number remains on the register until the individual actively removes it. For marketers, the practical implication is straightforward: before making any marketing voice call, check the No Voice Call register; before sending any marketing SMS, check the No Text Message register; before sending any marketing fax, check the No Fax Message register. Failure to check — or failure to act on the results of a check — constitutes a violation of the PDPA.

Checking the DNC Registry

The PDPC provides an online checking service through the DNC registry website that allows organisations to verify whether specific telephone numbers are registered on any of the three DNC registers. The service supports both individual number checks and bulk checks for organisations processing larger volumes. To use the service, organisations must first register for an account on the DNC registry portal.

The checking process is straightforward but must be performed within the correct timeframe. A DNC check is valid for 30 days from the date it is performed. This means that if you check a number on 1 March, you may contact that number (if it is not registered) at any point up to 31 March, but not beyond. For organisations running regular telemarketing campaigns, this requires a disciplined checking schedule — either checking your entire call list before each campaign or maintaining a rolling check process that ensures no number is called outside its 30-day validity window.

For bulk checking, the PDPC’s service allows organisations to upload lists of telephone numbers and receive results indicating the DNC registration status of each number across the relevant registers. This service is essential for advertising and telemarketing operations working with large contact databases. Integrate DNC checking into your campaign workflow as a mandatory pre-campaign step — your call list should only be released to agents or autodialler systems after DNC-registered numbers have been removed. Document every DNC check performed, including the date, the register(s) checked, the number of records submitted, and the results. These records are your primary evidence of compliance in the event of a complaint or PDPC investigation.

DNC Exemptions for Telemarketing

The PDPA provides several exemptions from the DNC provisions that may apply to telemarketing activities. The most important exemption for marketers is the clear and unambiguous consent exemption. If an individual has given your organisation specific, documented consent to receive telemarketing calls, you may call them regardless of whether their number is on the DNC register. However, the consent must be given directly to your organisation (not to a third party on your behalf), must be clear and unambiguous (not buried in terms and conditions), and must specifically cover telemarketing calls.

The ongoing relationship exemption allows organisations to contact individuals with whom they have an existing relationship, provided the call relates to the subject matter of that relationship. For example, a bank may call an existing customer about a new financial product related to their existing accounts, or an insurance company may call a policyholder about renewal or additional coverage options. The key requirement is that the call must be related to the existing relationship — a call about an unrelated product or service would not qualify for this exemption.

Other exemptions include calls made for the purpose of market surveys or research (provided the call does not include any marketing message), calls made by or on behalf of a public agency, and calls where the recipient has published their number in a business or professional directory for the purpose of being contacted about the subject matter of the directory listing. It is important to note that exemptions are interpreted strictly by the PDPC — if you rely on an exemption, be prepared to demonstrate that your specific circumstances fall within its scope. When in doubt, perform the DNC check and obtain express consent, as the cost of compliance is far lower than the cost of an enforcement action. Your social media and digital channels can support consent collection by driving opt-ins through online forms.

Calling Hour Restrictions

While the PDPA itself does not prescribe specific calling hours for telemarketing, industry best practices and the PDPC’s guidance establish clear expectations about when marketing calls should and should not be made. Calling outside reasonable hours increases the likelihood of complaints, which can trigger PDPC investigations and enforcement action. The generally accepted calling hours for telemarketing in Singapore are between 9:00 AM and 9:00 PM on weekdays and Saturdays, with particular caution around public holidays and Sundays.

Beyond regulatory considerations, calling hour management directly affects campaign effectiveness. Calls made during working hours (9:00 AM to 6:00 PM) may be more suitable for B2B telemarketing, when decision-makers are at their desks and in a business mindset. Calls to consumers are often more effective in the early evening (6:00 PM to 8:30 PM), when people are at home and more receptive to non-work conversations. Avoid calling during meal times — particularly around 12:00 PM to 1:00 PM and 6:00 PM to 7:00 PM — as interrupting meals generates disproportionate frustration and complaint rates.

Configure your telemarketing systems to enforce calling hour restrictions automatically. Autodialler systems and call centre software should be programmed with time-of-day rules that prevent calls outside your designated calling windows. If you are outsourcing telemarketing to a third-party call centre, specify calling hour restrictions in your service agreement and monitor compliance. For organisations calling across different time zones (such as Singapore-based operations calling Malaysian numbers), ensure that calling hours are calculated based on the recipient’s local time, not the caller’s. Document your calling hour policy and ensure all telemarketing agents are trained on it.

The PDPA’s consent obligation applies to telemarketing just as it does to all other marketing channels. Before making a marketing call, you need a lawful basis to use the individual’s phone number for that purpose. In most cases, this means either consent (express or deemed) or a valid DNC exemption. For telemarketing specifically, the quality and documentation of your consent is particularly important because the PDPC receives more complaints about telemarketing than almost any other marketing channel.

When collecting consent for telemarketing, be specific about what the individual is agreeing to. A consent that says “I agree to be contacted by [Organisation Name] by telephone for marketing purposes” is clear and defensible. A consent that says “I agree to receive communications” is vague and may not be sufficient to cover telemarketing calls specifically. If you collect consent through a 웹사이트 form, include a specific checkbox for telephone marketing — separate from email and SMS consent — so that the individual can choose which channels they are comfortable with.

Maintain comprehensive records for every telemarketing contact. For each call made, record: the date and time, the number called, the agent who made the call, the DNC check date and result, the consent basis (express consent, deemed consent, or specific exemption), and the outcome of the call. For consent records, retain: the date consent was given, the method (online form, written form, verbal consent during a call), the specific consent language, and any conditions or limitations. For opt-out records, document: the date the opt-out was requested, the method, when it was processed, and confirmation that the number was added to your suppression list. These records collectively form your compliance evidence and should be retained for at least five years to cover the PDPC’s investigation timeframes.

Setting Up Compliant Telemarketing

Building a compliant telemarketing operation requires investing in processes, training and technology before making your first call. Start with your data foundation: audit your contact database to verify the consent basis for every number, remove any numbers for which consent cannot be verified, and establish a clean baseline from which to operate.

Implement a pre-campaign compliance checklist. Before every telemarketing campaign: define the target audience and verify that your consent basis covers the campaign’s purpose; perform a DNC registry check (or verify that a valid check exists within the 30-day window); cross-reference your call list against your suppression list of opted-out contacts; prepare a compliant call script that includes your organisation’s identification, the purpose of the call, and an opt-out option; brief agents on the campaign objectives, compliance requirements, and escalation procedures for difficult calls.

Train your telemarketing agents thoroughly on PDPA compliance. Agents should understand: the obligation to identify themselves and the organisation they represent at the beginning of every call; the requirement to respect opt-out requests immediately and not attempt to persuade individuals to remain on the list; the prohibition on making misleading or deceptive claims during calls; the importance of documenting call outcomes accurately; and the procedure for handling data access or correction requests that may arise during calls. Monitor call quality regularly through call recording (with appropriate notice to callers) and review a sample of calls for compliance with your scripts and procedures. Consider integrating your telemarketing efforts with your email marketing and SEO campaigns to create a multi-channel approach where telemarketing follows up on digitally generated leads who have already expressed interest and provided consent.

Penalties and Enforcement Trends

Telemarketing violations are among the most commonly enforced breaches in the PDPC’s published decisions. The PDPC can impose financial penalties of up to S$1 million or 10% of annual turnover (whichever is higher) for DNC violations, and penalties of up to S$1 million or 10% of turnover for broader PDPA breaches related to consent, purpose limitation, or data protection. In practice, penalties for telemarketing violations have ranged from warnings and directions for minor or first-time breaches to financial penalties exceeding S$100,000 for systematic or repeated violations.

Common telemarketing violations in PDPC enforcement decisions include: failing to check the DNC registry before making marketing calls, relying on invalid or insufficient consent to justify calls to DNC-registered numbers, continuing to call individuals who have requested to be removed from call lists, failing to maintain adequate records of DNC checks and consent, and using personal data collected for one purpose (such as a service enquiry) to make marketing calls about unrelated products or services. The PDPC has also taken action against organisations that outsource telemarketing to third-party call centres without ensuring that those centres comply with DNC and PDPA requirements.

Enforcement trends in recent years show the PDPC taking an increasingly firm stance on repeat offenders and organisations that demonstrate a pattern of non-compliance. First-time violations with limited impact may result in warnings or directions to remedy the breach, while organisations with multiple violations or those that affect a large number of individuals face significant financial penalties. The PDPC also considers the organisation’s level of cooperation during the investigation, the measures taken to remedy the breach, and whether the organisation had compliance processes in place (even if those processes failed in the specific instance). Proactive compliance — including regular DNC checks, robust consent management, agent training, and documented procedures — positions your organisation favourably in the event of an investigation and significantly reduces the likelihood of a breach occurring in the first place.

자주 묻는 질문

Can I call a DNC-registered number if the person gave me their business card?

Receiving a business card does not automatically constitute clear and unambiguous consent to receive telemarketing calls. The business card exchange may give rise to deemed consent for follow-up communications related to the business context of the exchange, but this is unlikely to extend to general marketing calls. If the person’s number is on the DNC register, you should not make marketing calls to that number unless you have obtained specific, documented consent for telemarketing from that individual. For follow-up related to the specific business discussion, deemed consent may apply, but exercise caution and obtain express consent if you intend to make marketing calls.

Do I need to check the DNC registry for calls to mobile numbers only?

No. The DNC registry covers all Singapore telephone numbers, including both mobile and fixed-line numbers. Before making a marketing call to any Singapore telephone number — whether a mobile number, an office landline, or a home phone — you must check the relevant DNC register. The No Voice Call register covers all telephone numbers from which marketing calls must be withheld, regardless of whether the number is mobile or fixed-line.

Can I use automated or pre-recorded voice messages for telemarketing?

Yes, but automated or pre-recorded voice messages are subject to the same DNC and consent requirements as live agent calls. The recipient’s number must be checked against the No Voice Call register, and you must have valid consent or a DNC exemption. Additionally, automated messages must identify the sender organisation, state the purpose of the call, and provide a mechanism for the recipient to opt out of future calls. Some consumers find automated calls more intrusive than live calls, so be prepared for higher complaint rates and ensure your compliance processes are particularly robust for automated campaigns.

What should I do if someone asks to be removed from my call list during a call?

Process the opt-out request immediately. The agent should acknowledge the request politely, confirm that the individual will be removed from all future marketing call lists, and end the call respectfully. Add the number to your suppression list the same day and ensure it is cross-referenced against all future call lists before any campaign. Do not attempt to persuade the individual to remain on the list, offer incentives to stay, or transfer the call to a supervisor to “save” the contact. Under the PDPA, individuals have the right to withdraw consent at any time, and your obligation is to facilitate that withdrawal, not resist it.

Can I outsource telemarketing and avoid DNC responsibility?

No. If you engage a third-party call centre or telemarketing agency to make calls on your behalf, you remain responsible for ensuring DNC compliance. The PDPA holds the organisation on whose behalf the calls are made accountable for compliance, even if the actual calling is performed by a third party. You must ensure that your telemarketing vendor performs DNC checks, uses only consented contact data, follows your calling hour policy, and maintains proper records. Include DNC and PDPA compliance obligations in your vendor contract and audit your vendor’s compliance practices regularly.

Are follow-up calls to enquiries considered telemarketing?

A follow-up call to an individual who has submitted an enquiry — such as filling out a contact form on your website or requesting a quote — is generally not considered unsolicited telemarketing, because the individual has initiated the contact and expects a response. However, if the follow-up call goes beyond responding to the enquiry and includes marketing messages about unrelated products or services, it may cross into telemarketing territory. Best practice is to respond to the enquiry as requested and, during the conversation, seek explicit consent before introducing marketing content about other offerings.