Tax Treaty Relief in Hong Kong Confirm the cited source.

01How many CDTAs does Hong Kong have, and why does the territorial tax basis matter?

As of March 2026, Hong Kong has signed Comprehensive Double Taxation Agreements (CDTAs) with 57 jurisdictions that are in force, plus several more signed but awaiting ratification (including Barbados, Jordan, Kyrgyzstan, Maldives, and Norway).[1] The network is administered by the Inland Revenue Department (IRD) under the Inland Revenue Ordinance (Cap 112, Section 49), which gives domestic-law effect to each CDTA through a subsidiary Order in Council.

Because Hong Kong taxes only income or profits sourced within Hong Kong -- not worldwide income -- a Hong Kong-resident company or individual typically does not face Hong Kong profits tax on foreign-sourced dividends, interest, or royalties in the first place. This territorial basis means that the classic bilateral double-taxation risk (both the source state and the residence state taxing the same income) is structurally limited. Where Hong Kong CDTAs remain practically important is on the outbound side: a Hong Kong resident receiving dividends, interest, or royalties from a treaty partner can use the CDTA to claim a reduced withholding rate from that partner jurisdiction, and present a Certificate of Resident Status (CoR) issued by IRD as proof of Hong Kong tax residence.[2]

Hong Kong imposes no domestic withholding tax on dividends or on most interest paid outbound by Hong Kong-resident payers. Royalties paid to non-residents are subject to withholding at an effective rate of 4.95% (where the non-resident is not a related party carrying on a trade involving the IP) or 16.5% (other categories) under IRO Section 21A. Treaty partners can therefore use the CDTA to cap what Hong Kong charges on royalty outflows -- though the domestic rates are already comparatively moderate.

02What withholding rates do key Hong Kong CDTAs set?

Hong Kong CDTAs establish maximum withholding rates that the source (treaty-partner) state may impose on payments made to Hong Kong-resident beneficial owners. The table below draws on IRD's published rate schedule.[3]

All rates are subject to the beneficial-owner condition: the Hong Kong resident must be the beneficial owner of the payment, not merely an agent or nominee. The Mainland China rates in particular require a 25% direct shareholding to access the reduced 5% dividend rate.

03How does the FSIE regime interact with treaty relief?

Since 1 January 2023, the Foreign-Sourced Income Exemption (FSIE) regime -- introduced by the Inland Revenue (Amendment) (Taxation on Specified Foreign-sourced Income) Ordinance 2022 -- requires members of multinational enterprise (MNE) groups to satisfy economic-substance, participation, or nexus requirements when bringing foreign-sourced dividends, interest, IP income, or disposal gains into Hong Kong.[4] The 2023 Amendment Ordinance (effective 1 January 2024) expanded the disposal-gains category to cover all property types, not just equity interests.

Where an in-scope MNE entity receives foreign-sourced passive income in Hong Kong and that income is chargeable to Hong Kong profits tax because the FSIE exemption conditions are not met, the entity can claim relief for foreign tax already paid abroad:

• CDTA territories: a bilateral tax credit under Section 50A of the IRO -- the credit is capped at the lower of foreign tax paid or Hong Kong profits tax payable on the same income.
• Non-CDTA territories: a unilateral tax credit applies for Hong Kong-resident MNE entities; a foreign-tax deduction under Section 16(1)(ca) applies for non-resident entities (effective from YA 2021/22).

The FSIE regime does not override Hong Kong's territorial source principle. Source determination and the economic-substance test operate in distinct and separate contexts.[4] But the regime effectively closes the prior gap where HK-incorporated groups could receive offshore passive income in Hong Kong free of both foreign and Hong Kong tax.

04How does the Mainland China-Hong Kong arrangement work?

The Mainland China-Hong Kong CDTA (signed 21 August 2006, with subsequent protocols) is the most commercially significant bilateral arrangement in Hong Kong's CDTA network. Hong Kong serves as the principal conduit for Mainland China inbound and outbound foreign direct investment.

Key withholding rates under the arrangement: dividends 5% where the beneficial owner is a company holding directly at least 25% of the payer's capital (10% otherwise); interest 7%; royalties 7% (reduced to 5% for aircraft and ship leasing income).[5] To access these rates, a Hong Kong company must present a Certificate of Resident Status issued by IRD. From 10 November 2025, IRD issues only digital e-CoRs for Mainland DTA applications, delivered as PDF files to the applicant's Business Tax Portal (BTP) or Individual Tax Portal (ITP) account; Mainland tax authorities authenticate e-CoRs via the eproof.gov.hk verification portal.[2]

The arrangement also defines "resident of Hong Kong" broadly for treaty purposes: a company is a Hong Kong resident if incorporated in Hong Kong, or if normally managed or controlled in Hong Kong -- the "managed or controlled" limb does not require both management and control to be exercised in Hong Kong; management of daily business operations in Hong Kong suffices.[6]

05How do you obtain a Certificate of Resident Status to claim treaty benefits?

The Certificate of Resident Status (CoR) is the formal proof of Hong Kong tax residence that foreign withholding agents in treaty-partner jurisdictions require before applying a reduced treaty rate. IRD issues CoRs under the following framework:[2]

Individuals qualify if they: (a) ordinarily reside in Hong Kong (permanent home where the individual or family lives, with continuity); (b) stay in Hong Kong for more than 180 days during a year of assessment; or (c) stay in Hong Kong for more than 300 days across two consecutive years of assessment.

Companies and other entities qualify if they are: (a) incorporated or constituted under Hong Kong law; or (b) incorporated elsewhere but managed or controlled in Hong Kong; or (c) re-domiciled to Hong Kong.

Application forms (updated July 2025): IR1313A (entities, Mainland China DTA); IR1313B (entities, all other jurisdictions); IR1314A (individuals, Mainland China DTA); IR1314B (individuals, all other jurisdictions). Applications may be submitted through the IRD eTAX portal (ITP or BTP) or by post to the Tax Treaty Section, 17/F Inland Revenue Centre, 5 Concorde Road, Kai Tak, Kowloon. IRD targets issuance within 21 working days of a properly completed application. A CoR does not guarantee treaty relief -- the final determination rests with the treaty-partner authority -- but it is the required first step for claiming reduced withholding rates.[2]

For year-round HK tax matters see the Hong Kong country overview. For guidance on how the territorial basis affects HK-resident investors' cross-border dividend reporting, see the Hong Kong dividend and investment tax crossover.

The material above describes the legal framework as published by IRD and does not constitute the work product of a qualified tax professional. Circumstances differ across entities and transactions; consult a qualified tax professional with cross-border Hong Kong experience before relying on any CDTA position.