Understand filing obligations
Even if you live thousands of miles from the U.S., you must still file a federal tax return on your worldwide income. If you’re wondering how to file us taxes abroad from Hong Kong, Taiwan, or Macao, here’s what you need to know:
- You must file Form 1040 to report wages, self-employment income, rental earnings, dividends, and other income sources.
- You may qualify for the foreign earned income exclusion or the foreign tax credit to reduce your U.S. tax bill.
- You must report foreign financial accounts if their combined value exceeds $10,000 at any point in the year.
For a complete overview of expat filing rules, see IRS Publication 54.
Federal income tax
Use Form 1040 to report worldwide income. Here are key deadlines and extensions:
| Return type | Regular deadline | Automatic extension | Extended deadline |
|---|---|---|---|
| Form 1040 | April 15, 2026 | June 15, 2026 | October 15, 2026¹ |
| FBAR (FinCEN Form 114) | April 15, 2026 | N/A | October 15, 2026 |
¹File Form 4868 by April 15 to secure the October 15 extension.
Report foreign accounts
If you had a financial interest in or signature authority over foreign accounts exceeding $10,000, file FinCEN Form 114 (FBAR) electronically through the FinCEN BSA E-Filing System. FBAR is separate from your tax return and carries stiff penalties for late or missing filings.
Additional forms
Depending on your situation, you might also need:
- Form 8938 to report specified foreign financial assets
- Form 3520 or 3520-A for foreign trusts and gifts
- Form 5471 if you own certain foreign corporations
Collect necessary documents
Assemble these items before you start:
Income and expense records
- W-2s and 1099s
- Invoices or receipts for self-employment earnings
- Rental income statements and property expense logs
Bank account statements
- Monthly or year-end statements for all foreign accounts
- Documentation of account balances to determine FBAR thresholds
Proof of foreign residence
- Passport copies with entry/exit stamps
- Lease agreements or utility bills showing your address
Evaluate tax benefits
You can lower your U.S. tax liability by claiming exclusions or credits.
Foreign earned income exclusion
- Exclude up to $130,000 of foreign earned income for 2025
- File Form 2555 and meet either the bona fide residence test or the physical presence test
- Use the IRS Interactive Tax Assistant to check your eligibility
Foreign tax credit
- Offset U.S. tax with taxes paid to Hong Kong, Taiwan, or Macao
- File Form 1116 to calculate your credit
- Compare scenarios with and without the exclusion to choose the best option
Need expert help choosing the right strategy? Check out our expat tax service overview or request specialized support in Hong Kong, Taiwan, or Macao.
Choose a filing method
E-file from abroad
- Many U.S. tax software providers support foreign addresses
- E-filing is secure and faster than mail, and it automatically processes your FBAR separately
Mail your return
If you prefer paper filing, send your Form 1040 to:
| Return without payment | Return with payment |
|---|---|
| Department of the Treasury | Internal Revenue Service |
| Internal Revenue Service | P.O. Box 1303 |
| Austin, TX 73301-0215 | Charlotte, NC 28201-1303 |
Be sure to allow extra mailing time when sending from Hong Kong, Taiwan, or Macao.
Ready to simplify your filing? Visit our expat tax service overview or reach out to our team for personalized guidance.
Mind common pitfalls
- Missing deadlines can lead to interest and penalties
- Forgetting to convert foreign income and expenses into U.S. dollars at the correct IRS exchange rate
- Overlooking FBAR thresholds or failing to file Form 8938 when required
- Applying the foreign earned income exclusion without meeting the bona fide residence or physical presence test
- Ignoring treaty benefits or double-taxation agreements
Frequently asked questions
Can I file taxes electronically from abroad?
Yes. Most U.S. e-file platforms accommodate foreign addresses. E-filing also separates your FBAR filing automatically.
What exchange rate should I use?
Use the yearly average or year-end exchange rate published by the IRS in Publication 54 to convert foreign income and deductions into U.S. dollars.
How do I claim the foreign earned income exclusion?
File Form 2555 with your Form 1040 and meet either the bona fide residence test or the physical presence test. The IRS Interactive Tax Assistant can help you verify eligibility.
Do I need to file an FBAR even if my foreign accounts didn’t earn income?
Yes. FBAR filing is based on account balances, not income. If the combined value exceeded $10,000 at any point, you must file.
What happens if I miss the extension?
You’ll owe interest on unpaid taxes from April 15 and potential late-filing or late-payment penalties. File as soon as possible to minimize charges.
Key takeaways for filing
- You must file Form 1040 and report all worldwide income, even while living in Hong Kong, Taiwan, or Macao
- Claim the foreign earned income exclusion and foreign tax credit to reduce your U.S. tax bill
- Report foreign accounts via FBAR by April 15, with an automatic extension to October 15
- Choose e-filing for speed and accuracy or mail your return to the correct IRS address
- Consult a professional service like American Pacific Tax to avoid mistakes and maximize benefits
