Withholding Tax in Singapore: When It Applies & How to Comply (2026)

Singapore is known for its low and competitive tax regime — but one area where many businesses are caught off guard is withholding tax (WHT). If your company pays certain types of income to a non-resident person or entity, you may be legally required to withhold a portion of that payment and remit it directly to the Inland Revenue Authority of Singapore (IRAS). Failure to do so exposes the paying company — not the foreign recipient — to penalties and interest.

This guide covers the 2026 rules: which payments trigger WHT, the applicable rates, how to file, treaty relief, and the most common compliance mistakes.

What Is Withholding Tax and Who Bears It?

Withholding tax is a mechanism by which Singapore companies (“payers”) deduct tax at source when making certain income payments to non-residents. The legal framework is principally found in Section 45 of the Income Tax Act 1947. The WHT is remitted to IRAS by the payer — the non-resident receives their payment net of the tax.

Critically, it is the payer’s obligation to withhold and remit. If a Singapore company fails to withhold when required, IRAS will recover the tax from the payer, not from the foreign recipient. The payer is therefore fully exposed to the WHT liability on top of whatever amount they have already paid to the foreign party.

Which Payments Trigger Withholding Tax?

Not all payments to foreigners attract WHT. The obligation is limited to specific categories of income specified in the Income Tax Act. The following table sets out the primary payment types and their applicable rates:

Full rates and payment-type definitions are available on the IRAS Withholding Tax rates page.

The Technical / Management Fee Question: Singapore vs Offshore

One of the most commonly misunderstood aspects of WHT relates to technical and management fees paid to foreign consultants or related companies. WHT at 17% applies only to fees for services physically performed in Singapore by the non-resident. If the services are entirely performed outside Singapore (e.g., a foreign HQ providing regional management services from its home country), WHT may not apply.

However, determining where services are “performed” can be complex in a group structure — particularly where offshore personnel visit Singapore for meetings, oversight, or implementation work. IRAS has published guidance on this, and businesses with frequent cross-border service arrangements should document the physical location of service delivery carefully.

When Must You Remit Withholding Tax?

Withholding tax must be remitted to IRAS by the 15th of the second month following the date of payment (or the date of crediting, if earlier). For example, if you pay a royalty to a non-resident licensor on 20 March 2026, the WHT must be remitted to IRAS by 15 May 2026.

This deadline applies regardless of whether you have received an invoice or whether the payment is in dispute. The obligation arises at the point of payment or crediting — whichever is earlier.

Late remittance attracts a penalty of 5% of the outstanding WHT per month (or part thereof), subject to a maximum of 20% of the outstanding tax. This is in addition to the underlying WHT itself, which IRAS will still collect from the payer.

How to File: Form IR37 and the myTax Portal

WHT is filed electronically through the IRAS myTax Portal using the relevant form:

• Form IR37: Used for most withholding tax payments (interest, royalties, technical fees, etc.)
• Form IR37A: Used where a Double Taxation Agreement (DTA) rate applies
• Form IR37B: For payments under certain trust arrangements

The filing process requires you to provide: the recipient’s name, tax identification number and jurisdiction, the nature and amount of the payment, the applicable WHT rate, and any DTA claim details if a reduced rate applies. Upon submission, IRAS generates a payment notice that must be settled by the due date.

Double Tax Agreement Relief: Reducing the Rate

Singapore has an extensive network of over 90 Double Taxation Agreements (DTAs), which often provide for reduced WHT rates on interest, royalties, and other specified payments. For example, under Singapore’s DTA with India, the WHT rate on royalties may be reduced from 10% to 8% or 10% depending on the specific treaty provisions. Under the DTA with the United Kingdom, interest payments may be reduced from 15% to 5%.

To claim DTA relief, the non-resident recipient must generally provide a certificate of residence from their home country’s tax authority. This certificate must be submitted to IRAS along with the WHT filing (via Form IR37A). The payer must retain a copy of the certificate as part of their records.

It is worth noting that DTA relief is not automatic — it must be actively claimed. Many Singapore businesses inadvertently over-withhold by applying the domestic rate when a lower treaty rate applies, resulting in an overpayment that can be refunded but is administratively burdensome to recover.

Common Withholding Tax Mistakes

• Paying first, withholding later: WHT must be deducted at source. You cannot gross-up the payment and then remit WHT separately — IRAS will treat the gross-up as additional income subject to WHT.
• Assuming WHT does not apply to digital services: Royalties and licensing fees for software, cloud platforms, and digital IP are subject to WHT if paid to non-residents. Many companies overlook this on SaaS subscriptions where IP licensing elements are embedded.
• Forgetting related-party payments: Intra-group charges for services, royalties, and management fees are fully subject to WHT — there is no intra-group exemption.
• Not tracking DTA expiry dates: Certificates of residence from foreign tax authorities typically expire annually. Using an expired certificate invalidates the DTA claim.
• Overlooking branch remittances: Remittances from a Singapore branch to its overseas head office may attract WHT on certain components (e.g., royalties embedded in the remittance).

Withholding Tax and Corporate Tax Planning

WHT interacts with Singapore’s broader corporate tax framework. Input tax and other credits are not available to offset WHT liabilities — the WHT is computed separately from income tax and GST. See our guide to Singapore Corporate Tax 2026 for the full corporate tax picture, and our Singapore Company Compliance Calendar 2026 to track all tax deadlines. Also relevant if you have payroll obligations to international staff is our Singapore Payroll and CPF Guide 2026.

Conclusion

Withholding tax is a straightforward concept with complex execution. The rates are clearly defined, the filing system is digital and well-organised, and IRAS’s guidance is thorough — but the obligation falls entirely on the payer, and the financial exposure from non-compliance is significant. For businesses with cross-border payment arrangements, a periodic WHT review is one of the most cost-effective compliance checks available.

If your company needs a withholding tax review, assistance with treaty relief claims, or support with IRAS filing, Raffles Corporate Services provides comprehensive Singapore tax advisory and compliance services. Our tax team can help ensure you are withholding at the right rates and filing accurately and on time.

— The Editorial Team, Raffles Corporate Services