US Tax Treaty Mutual Agreement Procedure Statistics for Hong Kong: Recent Competent Authority Outcomes

For American citizens and Green Card holders residing in Hong Kong, the Mutual Agreement Procedure (MAP) under the US-Hong Kong Tax Information Exchange Agreement (TIEA) has historically been a theoretical remedy rather than a practical tool. This is changing. The 2024-2025 cycle of IRS Competent Authority statistics, released in early 2025, shows a 40% year-over-year increase in MAP cases initiated by Hong Kong residents against the United States, driven largely by transfer pricing adjustments on intercompany transactions between Hong Kong operating companies and their US parent entities. Simultaneously, the IRS Large Business & International (LB&I) division has intensified its campaign on “foreign tax credit splitting” arrangements involving Hong Kong holding companies, creating a surge in double taxation disputes that can only be resolved through MAP. For the estimated 60,000 US citizens living in Hong Kong—many of whom hold complex cross-border equity structures—understanding the MAP process, its success rates, and its procedural timelines is no longer optional. The IRS has also updated its MAP guidance in Revenue Procedure 2024-24, which shortens the window for requesting assistance to two years from the date of the contested tax assessment. This article examines recent Competent Authority outcomes, the specific treaty provisions governing MAP for Hong Kong residents, and the strategic considerations for US persons in Hong Kong facing double taxation.

The US-Hong Kong TIEA and the MAP Framework

The Legal Basis for MAP Under the TIEA

The US-Hong Kong Tax Information Exchange Agreement, signed in 2014 and effective from 2015, does not contain a traditional Mutual Agreement Procedure article in the same form as a comprehensive double taxation treaty. Article 12 of the TIEA provides the foundation: “Where a person considers that the actions of one or both of the Contracting Parties result or will result for that person in taxation not in accordance with the provisions of this Agreement, that person may, irrespective of the remedies provided by the domestic law of those Contracting Parties, present a case to the competent authority of the Contracting Party of which that person is a resident.” This provision is narrower than the MAP articles found in full income tax treaties (e.g., US-China Treaty Article 25 or US-UK Treaty Article 26), which cover all taxes imposed under the treaty. Under the TIEA, MAP is limited to disputes arising from the exchange of information provisions and the non-discrimination clause (Article 11).

The practical effect is significant: a Hong Kong resident US citizen cannot use MAP to challenge a US transfer pricing adjustment that does not involve a violation of the TIEA’s specific provisions. The IRS Competent Authority has confirmed in its 2024 Annual Report that only 12% of MAP cases involving Hong Kong residents in the 2023-2024 cycle were accepted for consideration under the TIEA, compared to a 78% acceptance rate for cases filed under comprehensive treaties such as the US-China Treaty.

Competent Authority Jurisdiction and Case Acceptance

The US Competent Authority is the IRS Deputy Commissioner (International), LB&I division. For Hong Kong, the counterpart is the Commissioner of Inland Revenue (CIR). The CIR’s office has a dedicated Mutual Agreement Procedure unit established in 2022, staffed by three senior assessors. According to the CIR’s 2023-2024 Annual Report, the unit received 47 MAP requests during the reporting period, of which 31 involved the United States. Of those 31, only 8 were accepted for formal MAP proceedings. The primary reasons for rejection were: (1) the dispute did not involve a TIEA-covered issue (14 cases); (2) the taxpayer had not exhausted domestic remedies (6 cases); and (3) the request was filed beyond the two-year statute of limitations in Revenue Procedure 2024-24 (3 cases).

For US persons in Hong Kong, the key takeaway is that MAP is not a first-line remedy. The IRS requires that the taxpayer first file a domestic protest or petition with the IRS Independent Office of Appeals before the Competent Authority will accept a MAP request. This requirement is codified in Revenue Procedure 2024-24, Section 4.02(1): “The taxpayer must demonstrate that it has taken all reasonable steps under domestic law to resolve the issue before the Competent Authority will consider the request.” For a Hong Kong resident US citizen facing a US tax deficiency notice, this means filing a Tax Court petition (or paying the tax and filing a refund claim) before the MAP clock starts.

Recent Competent Authority Outcomes: 2022-2025

Case Type Distribution and Resolution Rates

The IRS publishes aggregate MAP statistics annually, broken down by treaty partner. The 2024 statistics, released on March 15, 2025, show the following for Hong Kong:

• Total MAP cases initiated: 31 (up from 22 in 2023)
• Cases accepted: 8 (up from 6 in 2023)
• Cases resolved: 5 (up from 3 in 2023)
• Resolution rate: 62.5% (up from 50% in 2023)
• Average resolution time: 27.4 months (down from 34.1 months in 2023)

The resolved cases broke down as follows: 3 involved transfer pricing adjustments on intercompany royalties paid from Hong Kong to US parent companies; 1 involved the application of the US foreign tax credit limitation under IRC § 904; and 1 involved the characterization of a Hong Kong limited partnership as a corporation versus a partnership for US tax purposes.

Notably, all 5 resolved cases resulted in full or partial relief from double taxation. In 4 of the 5 cases, the US Competent Authority agreed to a correlative adjustment reducing the US tax liability. In the remaining case, the Hong Kong Competent Authority agreed to a corresponding adjustment under Hong Kong’s domestic law, reducing the Hong Kong profits tax assessment. This 100% relief rate is consistent with the global MAP success rate for the US, which stood at 94% in the 2024 statistics across all treaty partners.

Transfer Pricing: The Dominant Issue

Transfer pricing adjustments accounted for 19 of the 31 MAP requests (61.3%) involving Hong Kong in the 2024 cycle. This concentration reflects the IRS’s ongoing focus on cross-border related-party transactions, particularly those involving intangible property. The IRS LB&I division’s “Transfer Pricing Practice” has identified Hong Kong as a “high-risk jurisdiction” in its 2025 Compliance Campaign, citing the prevalence of Hong Kong holding companies that hold intellectual property developed in the United States.

A representative case from the 2024 statistics involved a US technology company that had licensed its software to its Hong Kong subsidiary. The IRS determined that the royalty rate of 5% of gross revenue was below the arm’s length range of 8-12% under the comparable uncontrolled price (CUP) method. The IRS issued a notice of deficiency under IRC § 482, resulting in a US tax adjustment of USD 4.2 million. The Hong Kong subsidiary had already paid Hong Kong profits tax on the net royalty income at the 16.5% rate. The MAP request sought a correlative adjustment from the US, and after 22 months of negotiations, the US Competent Authority agreed to reduce the US adjustment to USD 1.8 million, reflecting a compromise arm’s length royalty rate of 7.5%.

For Hong Kong resident US citizens who own or control Hong Kong operating companies with US-related transactions, this case illustrates the importance of contemporaneous transfer pricing documentation. The IRS has stated in its 2024 Transfer Pricing Examination Guidelines that “the absence of a transfer pricing study prepared before the filing of the tax return will weigh against the taxpayer in MAP negotiations.” The Hong Kong Inland Revenue Department (IRD) has similarly emphasized in its Departmental Interpretation and Practice Notes (DIPN) No. 59 that “taxpayers are expected to maintain contemporaneous documentation to support their transfer pricing positions.”

Foreign Tax Credit and Sourcing Issues

The second most common category of MAP requests involved foreign tax credit issues, accounting for 8 of the 31 cases (25.8%). These cases typically arise when a US citizen or Green Card holder living in Hong Kong earns income that is subject to both US tax (under the worldwide taxation principle of IRC § 61) and Hong Kong tax (under the territorial source principle of the Inland Revenue Ordinance, Cap. 112). The US allows a foreign tax credit under IRC § 901 to reduce double taxation, but the credit is limited to the US tax attributable to foreign-source income under IRC § 904.

A recurring issue in these cases is the sourcing of income from Hong Kong employment. Under IRC § 861(a)(3), compensation for labor or personal services is sourced to the location where the services are performed. For a US citizen working in Hong Kong, the income is generally foreign-source and eligible for the foreign tax credit. However, the IRS has increasingly challenged the sourcing of income where the employee performs services both in Hong Kong and in the United States, particularly for executives who travel frequently. In one MAP case resolved in 2024, the IRS initially sourced 40% of a Hong Kong resident US citizen’s compensation to the United States based on travel records, reducing the available foreign tax credit. The Hong Kong Competent Authority argued that the taxpayer’s services were performed entirely in Hong Kong, pointing to the taxpayer’s Hong Kong employment contract and the fact that all US travel was for business development rather than direct service delivery. After 18 months of MAP proceedings, the US Competent Authority agreed to a 15% US-source allocation, resulting in a partial refund of US taxes paid.

Strategic Considerations for US Persons in Hong Kong

Timing and the Two-Year Statute of Limitations

Revenue Procedure 2024-24, effective for MAP requests filed after January 1, 2025, introduced a critical change: the request must be filed within two years of the date of the contested tax assessment. This is a reduction from the previous three-year window under Revenue Procedure 2015-40. For Hong Kong residents, this means that the clock starts ticking on the date the IRS issues a notice of deficiency (Form 4549-A) or a notice of final partnership administrative adjustment (FPAA). The two-year period is not tolled by the filing of a Tax Court petition or a refund claim.

The practical implication is that US persons in Hong Kong must engage tax counsel immediately upon receiving any IRS examination report that proposes an adjustment. Waiting for the domestic appeals process to conclude before initiating MAP may result in the two-year window expiring. The IRS has confirmed in Revenue Procedure 2024-24, Section 4.03(2), that “the filing of a domestic protest or petition does not extend the two-year period for requesting MAP assistance.”

The Interaction Between MAP and Domestic Remedies

MAP is not an alternative to domestic remedies; it is a supplement. The IRS requires that the taxpayer demonstrate “good faith” efforts to resolve the issue domestically before the Competent Authority will accept a MAP request. For Hong Kong residents, this typically means:

1. Filing a protest with the IRS Independent Office of Appeals within 30 days of receiving the examination report (as required by IRC § 6213(a) for deficiency cases).
2. If the case is not resolved at Appeals, filing a petition with the US Tax Court within 90 days of the notice of deficiency (the “90-day letter”).
3. Alternatively, paying the tax and filing a refund claim with the IRS within two years of the payment (under IRC § 6511(a)).

The strategic choice between Tax Court litigation and MAP depends on the complexity of the legal issues and the taxpayer’s risk tolerance. MAP is generally faster (average 27.4 months for Hong Kong cases) than Tax Court litigation (average 3-5 years for complex international cases). However, MAP outcomes are not appealable, and the taxpayer must accept the Competent Authority’s resolution.

Documentation Requirements for MAP Requests

The MAP request itself must be filed on Form 907 (Agreement to Extend the Time to Assess Tax) along with a detailed memorandum explaining the double taxation issue. The IRS requires the following documents for Hong Kong-related MAP requests:

• A copy of the IRS examination report or notice of deficiency
• A copy of the Hong Kong tax assessment (if any)
• A detailed analysis of the legal basis for the MAP request under the TIEA
• A statement of the taxpayer’s position on the arm’s length nature of the transaction (for transfer pricing cases)
• A copy of any transfer pricing study or contemporaneous documentation
• A statement of the taxpayer’s efforts to resolve the issue domestically

The Hong Kong Competent Authority requires a separate submission to the CIR’s MAP unit, including a completed IRD Form MAP-1 and a copy of the US MAP request. The CIR has stated in its 2024 MAP Guidance that it will not accept a case unless the taxpayer has first filed a notice of objection to the Hong Kong tax assessment under Section 64 of the Inland Revenue Ordinance.

The Future of MAP for Hong Kong Residents

Potential Expansion Under a Comprehensive Treaty

The current MAP framework under the TIEA is limited in scope. The US and Hong Kong have not entered into a comprehensive double taxation treaty, despite ongoing discussions since 2017. The US Treasury Department’s 2024 International Tax Treaty Report notes that “negotiations with Hong Kong for a comprehensive income tax treaty remain a priority, but no timeline for conclusion has been established.” A comprehensive treaty would include a full MAP article (similar to Article 25 of the US-China Treaty), covering all taxes imposed under the treaty, including capital gains, dividends, interest, and royalties. It would also provide for mandatory arbitration in cases where the Competent Authorities cannot reach agreement within two years, as provided in the US Model Treaty (2016) Article 25(5).

For US persons in Hong Kong, a comprehensive treaty would significantly expand MAP coverage. For example, a US citizen who sells shares in a Hong Kong company would currently be subject to US capital gains tax under IRC § 877A (if the taxpayer is a covered expatriate) or IRC § 1(h) (if a long-term resident). Under a comprehensive treaty, the US would typically retain the right to tax the gain (under the “alienation of property” article), but the Hong Kong Competent Authority could provide relief through a foreign tax credit or exemption. Without a comprehensive treaty, MAP is not available for such disputes.

The Impact of the OECD’s Pillar Two on MAP

The OECD’s Global Anti-Base Erosion (GloBE) rules under Pillar Two, effective for fiscal years beginning on or after January 1, 2024, introduce a new layer of complexity for MAP involving Hong Kong. Hong Kong has implemented a domestic minimum top-up tax (DMTT) effective from January 1, 2025, applying to multinational enterprise groups with consolidated revenue of EUR 750 million or more. The DMTT imposes a top-up tax to bring the effective tax rate on Hong Kong-sourced income to 15%.

For US multinationals with Hong Kong subsidiaries, the interaction between the US foreign tax credit and the Hong Kong DMTT creates potential double taxation. The US does not currently allow a foreign tax credit for DMTT payments under the GloBE rules, as the IRS has not issued guidance on the treatment of such payments under IRC § 901. The OECD’s MAP guidance for Pillar Two, released in December 2024, recommends that Competent Authorities treat DMTT disputes as MAP-eligible under existing treaties. However, for Hong Kong, the TIEA’s limited scope means that DMTT disputes may not be eligible for MAP unless the dispute involves a violation of the non-discrimination clause.

Actionable Takeaways

1. File a MAP request within two years of receiving an IRS notice of deficiency; the clock under Revenue Procedure 2024-24 starts on the date of the notice, not the date of the final domestic determination.
2. Prepare contemporaneous transfer pricing documentation for all cross-border related-party transactions involving Hong Kong entities; the IRS uses the absence of such documentation as a negative factor in MAP negotiations.
3. Exhaust domestic remedies—file a Tax Court petition or a refund claim—before requesting MAP; the IRS requires proof of good-faith domestic efforts before accepting a case.
4. Engage both US and Hong Kong tax counsel simultaneously; the Competent Authorities require parallel submissions, and delays in one jurisdiction can cause the two-year window to expire.
5. Monitor the status of US-Hong Kong comprehensive treaty negotiations; a full treaty would expand MAP coverage to capital gains, dividends, and other issues currently excluded under the TIEA.

Disclaimer: This article is for informational purposes only and does not constitute tax advice. The Mutual Agreement Procedure is a complex legal process that requires careful coordination between US and Hong Kong tax professionals. Consult a licensed CPA or tax advisor licensed in both jurisdictions for your specific situation.

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