The New Singapore-Taiwan Tax Agreement (2026): What It Means for Cross-Border Businesses

For decades, Singapore companies trading with, investing into, or borrowing from Taiwan have worked around an awkward gap. Singapore and Taiwan have no formal diplomatic relations, so the two sides could never sign a conventional double tax agreement in the way Singapore has done with more than 100 other jurisdictions. Instead, cross-border income flows between the two territories were governed by a thin 1982 arrangement that, notably, said nothing at all about interest.

Raffles Corporate Services works with a panel of experienced Singapore law firms who offer cost-effective and efficient legal service and advice. This article is general information only and is not legal advice.

That changed on 13 February 2026. A new tax agreement between the Singapore Trade Office in Taipei and the Taipei Representative Office in Singapore entered into force, replacing the 1982 arrangement with a modern treaty-style instrument that lowers withholding tax on dividends, interest and royalties, and for the first time gives interest income a treaty-capped rate at all. For a Singapore director with a Taiwan subsidiary, a Taiwan investor, a Taiwan-based customer paying royalties, or a Taiwan lender, this changes the arithmetic on cross-border payments and creates a fresh compliance step many companies have not had to think about before.

This article sets out what changed, why the agreement takes the unusual form of a “trade office” arrangement rather than a state-to-state treaty, the old and new withholding tax rates side by side, and the practical steps a Singapore company should take now.

What Changed on 13 February 2026

The agreement was signed on 31 December 2025 by the Trade Representative of the Singapore Trade Office in Taipei and the Representative of the Taipei Representative Office in Singapore, and it entered into force on 13 February 2026 once both sides notified each other that their domestic procedures had been completed. On the Singapore side, this was given legal effect through a subsidiary order made under the Income Tax Act 1947. IRAS confirmed the entry into force in its own newsroom announcement.

The new agreement replaces the Exchange of Letters signed on 30 December 1981 and its annexed Agreement for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income, which had governed Singapore-Taiwan cross-border tax matters since 1982. That older arrangement was narrower than most of Singapore’s other tax treaties. Most notably, it contained no dedicated interest article, meaning cross-border interest payments between Singapore and Taiwan were taxed purely under each side’s domestic law, with no treaty ceiling.

From the 1982 Arrangement to a Modern Treaty

The new agreement follows the structure of a standard OECD-style double tax treaty: it covers business profits, permanent establishment, dividends, interest, royalties, capital gains, a mutual agreement procedure, exchange of information, and a modern principal purpose test that denies treaty benefits where obtaining them was one of the main reasons for a transaction. This last point matters. Companies should not assume the lower rates apply automatically; the agreement expects genuine commercial substance behind the arrangement being relied upon.

Why a “Tax Agreement” and Not a Formal Double Tax Agreement

Singapore and Taiwan do not maintain normal diplomatic relations, so the two sides cannot conclude a treaty government to government in the conventional sense. Singapore’s interests in Taiwan are represented by the Singapore Trade Office in Taipei, while Taiwan’s interests in Singapore are represented by the Taipei Representative Office in Singapore. The new agreement is therefore concluded between these two representative offices rather than between the Singapore and Taiwan governments directly.

In practical terms, this rarely matters to a business. The agreement defines “a territory” by reference to the tax administered by the Inland Revenue Authority of Singapore on one side, and the tax administered by Taiwan’s Taxation Administration, Ministry of Finance, on the other, and it operates for withholding tax relief, tax credit relief and double taxation elimination purposes exactly as a conventional double tax agreement would. IRAS treats it as Singapore’s operative instrument for relief from double taxation with Taiwan under the arrangements power in section 49 of the Income Tax Act 1947.

The New Withholding Tax Rates: Old Rates Compared With New Rates

The headline change is a broad reduction in the withholding tax ceilings that apply when income flows from one territory to a resident of the other. The table below sets out the position under the old 1982 arrangement compared with the new agreement, based on the treaty text published by IRAS.

Dividends

Dividends paid by a company resident in one territory to a beneficial owner resident in the other are now capped at 10 per cent, a straightforward improvement on the imputation-linked formula in the old arrangement, which offered little predictable relief once Taiwan moved away from its imputation credit system.

Interest

This is the most significant change for treasury and lending arrangements. Because the 1982 arrangement had no interest article, a Singapore company receiving interest from Taiwan, or vice versa, previously had no treaty protection at all. The new agreement caps interest withholding tax at 10 per cent for beneficial owners, and fully exempts interest paid bank to bank, and interest paid to government bodies, statutory authorities and certain reserve or investment funds.

Royalties

Royalties, covering copyright, patents, trademarks, designs, secret processes and industrial or scientific equipment, move from a 15 per cent ceiling to 10 per cent. Singapore companies licensing technology or brand rights into Taiwan, or paying Taiwan licensors, should see a direct reduction in withholding tax leakage once the new rate applies.

When Do the Lower Rates Actually Apply

This is the detail that catches companies out. The agreement entered into force on 13 February 2026, but entry into force is not the same as the withholding tax rates taking effect. Under the agreement’s entry into force provisions, the new withholding tax rates apply only to amounts liable to be paid, deemed paid, or actually paid, on or after 1 January of the calendar year following the year the agreement enters into force. Because the agreement entered into force during 2026, the new rates take effect for amounts paid on or after 1 January 2027.

In other words, a Taiwan dividend, interest or royalty payment made in 2026 is still governed by whatever rate applied under the old arrangement or domestic law, not the new 10 per cent ceiling. Companies should plan payment timing and documentation with 1 January 2027 firmly in mind, and should not assume the new rate can be claimed retroactively for 2026 payments.

How to Claim Treaty Benefits: The Certificate of Residence

To rely on the reduced rates, a Singapore company must generally be able to demonstrate to the Taiwan payer, and to Taiwan’s tax authority, that it is a Singapore tax resident entitled to treaty benefits. IRAS issues a Certificate of Residence for this purpose, and companies should not wait until a payment is due before applying, since processing takes time and Taiwan counterparties will typically want the certificate in hand before applying the reduced withholding rate at source.

Our detailed walkthrough of the Certificate of Residence application process, treaty benefits and withholding tax relief covers the documentation IRAS typically asks for and common reasons applications are delayed or rejected.

Practical Steps for Singapore Companies With Taiwan Exposure

Directors and finance teams with Taiwan operations, investors or customers should treat this as an action item for the remainder of 2026, ahead of the 1 January 2027 effective date for the new rates.

Review existing Taiwan contracts, particularly loan agreements, licensing agreements and shareholder loan arrangements, to check whether the counterparty and payment structure will qualify for the lower rates, and whether contract wording needs updating to reflect the new withholding tax treatment. Apply for a fresh Certificate of Residence well ahead of the first payment date expected to fall under the new rates, rather than waiting until a payment is imminent.

Check whether existing Taiwan arrangements were structured around the absence of a treaty interest article, for example by routing lending through a different jurisdiction, since that structure may no longer be necessary once the direct 10 per cent interest rate is available. Also confirm beneficial ownership and substance: the agreement’s entitlement to benefits provision is a principal purpose test similar to those in Singapore’s more recently updated treaties, so treaty shopping or purely conduit arrangements are unlikely to qualify.

Where a Taiwan tax authority and IRAS disagree on how the agreement applies to a specific payment, the agreement’s mutual agreement procedure gives both sides a formal channel to resolve the dispute. Our guide to Mutual Agreement Procedure in Singapore explains how that process works and when it is worth invoking.

For a broader refresher on how Singapore’s withholding tax regime interacts with treaty relief generally, see our guide to withholding tax in Singapore, when it applies and how to comply, and if your Taiwan operations also involve staff working across both territories, our article on hiring remote and overseas employees from a Singapore company covers the related payroll and permanent establishment risks.

Anti-Abuse Safeguards and Dispute Resolution

Alongside the lower rates, the new agreement brings Singapore-Taiwan tax relations up to modern anti-avoidance standards. A benefit will not be granted where obtaining it was one of the principal purposes of an arrangement, unless granting it remains consistent with the object and purpose of the relevant provision, and a full exchange of information article lets both sides share tax information relevant to enforcing their domestic laws and the agreement itself.

Companies that structured Taiwan-linked lending or licensing around the gaps in the 1982 arrangement should revisit those structures now, both to check they still make commercial sense and to confirm the company remains genuinely Singapore tax resident under the control and management test that IRAS applies.

Conclusion

The new Singapore-Taiwan tax agreement modernises a relationship governed by a narrow 1982 arrangement for over four decades. For the first time, cross-border interest between Singapore and Taiwan has a treaty-capped rate, and dividends and royalties both move to a cleaner, lower 10 per cent ceiling. The catch is timing: the agreement is already in force, but the new rates only apply to payments made on or after 1 January 2027. Singapore companies with Taiwan operations, investors, customers or lenders should use the months ahead to review contracts, apply for a fresh Certificate of Residence, and confirm their structures have the substance to withstand the agreement’s principal purpose test, so the lower rates are available from day one rather than missed through a late application.

The Editorial Team, Raffles Corporate Services