Hong Kong taxes salaries at rates capped in the mid-teens, charges nothing on capital gains or dividends, and only taxes what is earned in Hong Kong. For an American resident in the city, every one of those advantages comes with a federal asterisk: the US return still falls due each year, on worldwide income, and there is less foreign tax to credit against it than almost anywhere else Americans live.

That combination — low local tax, full US exposure — makes Hong Kong one of the places where US tax planning matters most.

No treaty to lean on

Unlike Americans in Canada, the UK or Japan, Americans in Hong Kong have no comprehensive US income tax treaty to smooth the edges (a narrow shipping-income agreement is the only one in force). No treaty means no tie-breaker residency rules, no treaty-protected pension deferral, and no reduced withholding rates on US-source income. The planning toolkit is therefore the domestic one: the exclusion, the credit, and careful structuring.

The exclusion does the heavy lifting

Because Hong Kong salaries tax is low, the foreign tax credit alone rarely covers the US tax on employment income. The foreign earned income exclusion (Form 2555) — US$130,000 of foreign earned income for 2025, indexed annually — is therefore the workhorse for most Americans in the city, often paired with the foreign housing exclusion, which stretches further in Hong Kong than almost anywhere because of the city’s rents.

What the exclusion does not cover: investment income, bonuses and RSU income above the ceiling, and self-employment tax. High earners in finance and law routinely owe real US tax in Hong Kong — the planning question is how much of it is avoidable.

MPF: the retirement account the US ignores

The Mandatory Provident Fund has no US recognition and no treaty protection:

  • Employer contributions are generally taxable compensation on the US return when made.
  • Earnings inside the fund are generally taxable as they accrue (and the underlying funds raise PFIC questions).
  • The account is reportable on the FBAR and Form 8938.

The same analysis applies, scheme by scheme, to ORSO plans and other local retirement arrangements. None of this makes the MPF avoidable — contributions are mandatory — but it must be reported correctly, and the numbers are rarely large enough to be painful if handled from the start.

Bank accounts, insurance and investments

  • FBAR (FinCEN 114) applies once all non-US accounts together exceed US$10,000 — for a working adult in Hong Kong, essentially always. Form 8938 stacks on top at higher thresholds.
  • Hong Kong investment-linked insurance products and savings plans, widely sold in the city, frequently contain PFICs and sometimes carry foreign-trust characteristics. These deserve a US review before purchase — many are simply unsuitable for US persons.
  • Local funds and ETFs are PFICs in US hands; US-listed equivalents usually are not. Where you hold your brokerage account matters less than what is in it.

The Hong Kong limited company

Thousands of Americans in Hong Kong run businesses through a local limited company — and every one of those companies is a controlled foreign corporation if US persons own more than half of it. That brings:

  • Form 5471 every year, with an automatic US$10,000 penalty per missed filing;
  • The US anti-deferral regimes, which can tax the company’s profits to the owner personally even when nothing is distributed — Hong Kong’s low corporate rate makes this bite harder, not softer;
  • Elections (such as section 962, or disregarded-entity classification on Form 8832) that can substantially improve the result when chosen deliberately.

If you take one thing from this guide: do not let a Hong Kong company’s US reporting be an afterthought. It is the most expensive mistake we see in the region.

Behind on everything?

Hong Kong has a large population of “accidental” and long-detached Americans — US passports from birth, no US filings since arrival, sometimes none ever. The Streamlined Foreign Offshore Procedures were built for exactly this situation: three years of returns, six years of FBARs, penalty-free for those whose non-compliance was non-willful. See our streamlined procedures guide for how it works.

The shape of a clean year

A well-run US filing year for an American in Hong Kong looks like: Form 1040 with the exclusion and housing exclusion optimised against any credits; FBAR and 8938 filed consistently; MPF reported; PFICs either avoided or properly elected; and any local company’s Form 5471 prepared from real books. None of it is exotic — it simply has to be done by someone who does it constantly.