Taiwan and Singapore’s revised income tax treaty introduces lower withholding tax caps, updated permanent establishment thresholds and a phased withdrawal of certain tax credit incentives, reflecting modern international tax standards and aiming to strengthen bilateral trade and investment.
Taiwan’s Ministry of Finance has announced today, 5 June 2026, of key changes introduced by the revised income tax treaty between Taiwan and Singapore, which entered into force on 13 February 2017 and applies from 1 January 2017.
The new agreement, signed on 31 December 2015, replaced the original treaty signed on 30 December 1970. Following the completion of domestic legal procedures in both jurisdictions and the exchange of notifications, the revised treaty became effective, with withholding taxes applying to income paid from 1 January 2017 and other taxes applying to income relating to tax periods beginning on or after that date.
According to the bureau, the updated treaty was negotiated to reflect the growth of bilateral trade and economic ties while aligning more closely with the principles contained in the OECD and UN model tax conventions. The revisions are intended to provide more appropriate tax relief and create a more favourable environment for cross-border investment and commerce.
Significant reduction in withholding tax rates
One of the most notable changes is the reduction of withholding tax rates on passive income.
Under the original treaty, dividends were subject to a maximum withholding tax rate of 40%, while royalties were capped at 15%. The revised treaty lowers both rates to a uniform maximum of 10%.
In addition, the new agreement introduces a maximum withholding tax rate of 10% on interest payments. Certain categories of interest received by qualifying entities may also benefit from exemption provisions.
The bureau said these changes are expected to reduce the tax burden on businesses and investors engaged in cross-border transactions between Taiwan and Singapore, making bilateral trade and investment more attractive.
Updated permanent establishment thresholds
The revised treaty also modernises the rules used to determine when a business has a taxable presence, or permanent establishment (PE), in the other jurisdiction.
For engineering and construction projects, the threshold has been changed from the previous test of more than six months cumulatively within one year, or six consecutive months aggregated over two years, to a simpler requirement of more than nine consecutive months.
The treaty also introduces a new PE threshold for services. Under the revised rules, a service PE may arise where services are performed for a period exceeding 183 days, either continuously or in aggregate, within any 12-month period.
Where an enterprise is deemed to operate through a permanent establishment, the profits attributable to that establishment may be taxed in the jurisdiction where the PE is located.
The updated provisions are intended to provide greater clarity and better reflect contemporary international tax practices governing cross-border business activities.
Three-year transition for tax credit changes
Another important aspect of the treaty concerns the elimination of certain tax credit mechanisms previously available under the original agreement.
Article 18 of the former treaty provided for indirect tax credits and deemed tax credits designed to encourage economic cooperation and investment between the two jurisdictions. However, the bureau noted that these incentives were originally developed in a different economic context and are no longer considered appropriate given the economic status of Taiwan and Singapore.
To align the treaty with Taiwan’s broader network of tax agreements and international standards, the revised agreement removes these mechanisms. However, recognising the need for businesses to adapt, the treaty provides a three-year transition period.
Under Article 23 of the new treaty, the indirect and deemed tax credit arrangements remain available in Taiwan for a limited period and will apply only to corporate income tax returns for tax years 2027 through 2029. After that period, the incentives will cease to apply.
The transition period is intended to give affected businesses sufficient time to review their structures, assess the impact of the changes and adjust their tax planning accordingly.
