US Expat Taxes in Hong Kong: FEIE, FTC, and No Tax Treaty

Americans who relocate to Hong Kong for a banking, finance, or trading role often assume the low local tax rates solve their tax problem, but the Inland Revenue Department and the IRS are two separate systems with no treaty connecting them. Hong Kong taxes residents and non-residents alike on income arising in or derived from Hong Kong under its salaries tax, while the United States taxes its citizens and green card holders on worldwide income no matter where they live or work. Unlike most other expat destinations, there is no comprehensive US-Hong Kong income tax treaty and no totalization agreement, so an American in Hong Kong relies entirely on the domestic Foreign Earned Income Exclusion and Foreign Tax Credit, not a treaty, to avoid double taxation. Because Hong Kong salaries tax is often lower than the comparable US tax on the same income, the planning analysis frequently runs in the opposite direction from higher-tax countries, the exclusion, not the credit, tends to do the heavy lifting.

Do US Citizens Living in Hong Kong Have to File Both Hong Kong and US Tax Returns?

Yes, in nearly every case an American living and working in Hong Kong owes a filing to both governments. Hong Kong's Inland Revenue Department taxes salaries income from an employment or office where the services are rendered in Hong Kong, a territorial approach based on source rather than worldwide reach. The United States separately taxes its citizens and green card holders on worldwide income regardless of Hong Kong residency, a rule tied to US citizenship or immigration status rather than where the taxpayer actually lives.

Because Hong Kong operates on source rather than residence or citizenship, the two filing obligations do not automatically overlap the way they do between two worldwide-income countries, but for most Americans working a Hong Kong-based job both the salaries tax return and the US Form 1040 are required for the same tax year. Filing and paying Hong Kong salaries tax does not excuse the US Form 1040 obligation, and because there is no US-Hong Kong tax treaty to fall back on, the Foreign Earned Income Exclusion and Foreign Tax Credit described below are the only tools that prevent the same income from being taxed twice.

How Does Hong Kong's Territorial Tax System Treat Residents?

Hong Kong does not tax residents on worldwide income at all. Salaries tax generally reaches income from an employment or office located in Hong Kong or from services performed in Hong Kong, and income that is genuinely foreign-source, unrelated to Hong Kong work, typically falls outside the salaries tax net, a structure very different from the worldwide-income systems used by most other countries in this series.

Hong Kong salaries tax is also assessed at relatively low rates, with a progressive schedule capped by a standard rate election. Because rates and rules can change year to year, and the source analysis depends on facts such as travel days and where duties are actually performed, current-year rules should be confirmed with a Hong Kong adviser rather than assumed. What matters most for US planning is the general shape of the system: a low-rate, source-based tax that frequently produces less foreign tax than the comparable US liability.

Should You Claim the FEIE or the Foreign Tax Credit on Hong Kong Income?

For many Americans working in Hong Kong, the Foreign Earned Income Exclusion on Form 2555 is the more valuable tool, because Hong Kong's low-rate, territorial salaries tax often produces less foreign tax paid than a Foreign Tax Credit would need to fully offset the equivalent US liability. Excluding foreign earned income up to the annually indexed maximum, for example $130,000 for 2025 under IRC §911, removes that income from US taxable income before any credit calculation comes into play.

The Foreign Tax Credit on Form 1116, computed by category under IRC §§901 and 904, still has a role for income above the exclusion cap, for passive Hong Kong-source income, or for a year where Hong Kong salaries tax happens to run unusually high relative to US tax. Unused credit carries back one year and forward ten years on Schedule B, but because Hong Kong tax is frequently lower than comparable US tax, the credit alone often does not fully shelter US liability. The FEIE has real costs: it does nothing for self-employment tax, it can disqualify the refundable Additional Child Tax Credit for a family with kids, and revoking the election generally locks you out of re-electing it for five years without IRS consent. Our FEIE versus Foreign Tax Credit comparison walks through the decision in more detail, and combining the exclusion on wage income with the credit on other categories is common and often the most efficient.

What Does the US-Hong Kong Tax Treaty Do for Double Taxation?

Nothing, because no comprehensive US-Hong Kong income tax treaty exists. Hong Kong is a special administrative region with its own separate tax system, and it is not covered by the US-China income tax treaty, which by its own terms does not extend to Hong Kong. Narrow US-Hong Kong arrangements exist for limited purposes, but there is no general treaty article on double taxation, permanent establishment, residency tie-breakers, or reduced withholding rates for an American living and working in Hong Kong to rely on.

That makes the domestic mechanisms the entire story. The Foreign Earned Income Exclusion and Foreign Tax Credit described above are not a backup plan behind a treaty in Hong Kong's case, they are the only relief available, which is part of why getting the FEIE-versus-FTC decision right matters more in Hong Kong than in a country with treaty-based relief to fall back on.

Does a US-Hong Kong Totalization Agreement Cover Social Security?

No. There is no totalization agreement between the United States and Hong Kong, so no treaty mechanism assigns social security coverage to a single system or protects a worker from being subject to both systems on the same earnings. Hong Kong does not operate a government social security contribution system the way most totalization-agreement countries do. Its Mandatory Provident Fund, described below, is a mandatory retirement savings requirement rather than a pay-as-you-go social security tax, so the totalization framework that resolves double social security taxation in treaty countries simply does not apply here.

For a US citizen or green card holder who is self-employed while based in Hong Kong, that means no certificate of coverage process exists to exempt Hong Kong self-employment income from US self-employment tax, which applies on its own terms. Our guide to totalization agreements and self-employment tax abroad explains how the certificate process works in countries where an agreement exists, and by contrast why Hong Kong-based self-employment income gets no such relief.

How Are Hong Kong Pensions and Retirement Accounts Taxed by the US?

Not automatically tax-deferred. Hong Kong's primary retirement vehicle is the Mandatory Provident Fund, a defined-contribution scheme that requires most employers and employees to make regular contributions into MPF accounts invested through approved constituent funds. Being mandatory and tax-favored under Hong Kong law does not, by itself, make the MPF tax-deferred for US purposes.

The general US rule under IRC §§401(a) and 402(b) treats income accruing inside a foreign retirement plan as currently taxable unless a specific treaty provision defers it, and because there is no US-Hong Kong tax treaty, that deferral is not available for the MPF, so growth inside an MPF account can be currently taxable for US purposes even though it is untaxed under Hong Kong law, and the underlying constituent funds may themselves raise the PFIC issues discussed next. Because the analysis is the same regardless of which country's plan is involved, our foreign pension US tax treatment guide walks through the four questions that determine the answer for any foreign retirement plan: whether growth is taxed as it accrues, whether a treaty defers it, what has to be reported, and how distributions are taxed.

Are Hong Kong Investment Funds Taxed as PFICs?

Usually, yes, including many of the constituent funds held inside an MPF account. A Hong Kong-domiciled mutual fund, unit trust, or ETF, and most foreign-domiciled pooled funds available through a Hong Kong brokerage, typically meet the definition of a passive foreign investment company under IRC Section 1297, with Sections 1291 and 1298 governing the tax treatment. That classification is a matter of US tax law and has nothing to do with how the fund is taxed under Hong Kong law.

Once a fund is a PFIC, the default US tax treatment is punitive: absent a timely election, gains and certain distributions are spread over the holding period, taxed at the highest rate in effect for each of those years, and hit with an interest charge on top. Each PFIC generally requires its own Form 8621 filing, and the reporting obligation applies even in a year where no US tax is actually due. This is one of the clearest reasons Americans in Hong Kong are usually steered toward US-domiciled brokerage accounts and US-based index funds for new investing outside the mandatory MPF, rather than opening additional local unit trusts through a Hong Kong bank.

What Else Do You Have to Report to the IRS?

Beyond the income tax return itself, Hong Kong financial accounts and investments carry separate information-reporting obligations that apply whether or not any US tax is owed. These filings are enforced on their own terms, and penalties for missing them are typically far larger than any tax that would have been due.

Whether you even count as a US tax resident in the first place, if your situation is more complicated than straightforward citizenship, such as a long assignment before a move becomes permanent, is a separate question governed by the substantial presence test.

Bottom Line

Living in Hong Kong does not simplify your US tax picture, it removes the treaty and totalization safety net that exists in most other expat destinations. The Inland Revenue Department and the IRS operate on entirely different bases, territorial source versus worldwide citizenship, and with no treaty or totalization agreement between the two governments, the Foreign Earned Income Exclusion and Foreign Tax Credit have to do all the double-tax planning, with the exclusion frequently the stronger choice given Hong Kong's relatively low rates. The Mandatory Provident Fund, Hong Kong investment funds, and foreign accounts each carry their own reporting rules on top of the income tax analysis, and getting any one wrong tends to cost more in penalties than the underlying tax ever would have.

Have questions about US expat taxes in Hong Kong? Contact TS CPA for a free consultation. We respond within the same day.

Official IRS and Government Sources

• IRS, Foreign Earned Income Exclusion
• IRS, Foreign Tax Credit
• IRS, US Citizens and Resident Aliens Abroad
• IRS, United States Income Tax Treaties A to Z
• Social Security Administration, Totalization Agreements
• FinCEN, Report of Foreign Bank and Financial Accounts (FBAR)
• IRS, About Form 8621
• IRC Section 911, Citizens or Residents Living Abroad