Do US Stocks Need to Be Reported for Taxes? — Schwab Guide
2026-05-09
Tax season hit — do US stock gains actually need to be reported in Taiwan?
Key points:
- What counts as overseas income: capital gains, dividends, US bond interest, etc.
- If total overseas gains exceed TWD 1 million, you need to file — but that doesn't necessarily mean you owe tax
- Under AML regulations: transfers above TWD 500K may trigger bank inquiries; above TWD 1M, keep your original remittance records as proof of principal
If you plan to repatriate funds that include gains exceeding TWD 1 million, you'll need to document what is "principal" (tax-exempt) and what is profit.
Reference: pocket.tw tax guide
1. Check Your Annual Gain
Accounts → Realized Gain/Loss → Set date range to last year (1/1–12/31)
Look at the Net Gain figure in the bottom right.
Below USD 32,108 = no filing needed (TWD 1,000,000 ÷ 31.1445 exchange rate ≈ USD 32,108)
Did gains exceed TWD 1 million?
→ No: No filing needed. Keep the report on hand — it's useful if your bank asks about incoming funds later.
→ Yes: Enter the amount in the tax system and follow the steps below.
2. Download Tax Documents
Accounts → Statements & Tax Forms → Set date to last year
Tax documents are compiled each year between February and March:
- Year-End Summary: Summarizes total annual realized gains and losses
- Form 1042-S: Records all dividend income received and the 30% US withholding tax already deducted
3. Save Your Records
- As gains approach the TWD 1M mark, start saving documents — recommended retention: at least 7 years
- You don't need to upload brokerage statements when filing, but the tax authority has the right to audit retroactively
- When filing, simply enter the calculated total in the "Overseas Income" field yourself
Find "Realized Gain or (Loss)" in the bottom right of the last few pages of your Year-End Summary:
| English | Chinese | What it means |
|---|---|---|
| Total Proceeds | 總出售金額 | Total cash received from selling stocks this year |
| Cost Basis | 成本基礎 | Original purchase price of those stocks |
| Wash Sale Loss Disallowed | 虛賣損失限制 | Losses from selling then rebuying within 30 days that can't be deducted (not relevant for Taiwan filings — just look at the final number) |
| Realized Gain or (Loss) | 已實現損益（淨利） | Net profit: total proceeds minus total cost |
The tax authority may request documents if:
- Repatriation: Bringing TWD 1M+ back to Taiwan triggers a bank report that may be cross-checked against your filing
- Random audit: The tax office audits filers with larger overseas income declarations
Documents to prepare:
- Realized gains summary = Year-End Summary
- Annual dividend details = Form 1042-S
- Remittance proof (original wire from Taiwan to your brokerage), showing what was principal
So Do You Actually Need to File?
What counts as "overseas income":
- Capital gains: Realized gains from selling stocks
- Dividends: US stock or ETF distributions
Taiwan uses an Alternative Minimum Tax (AMT) framework:
| Overseas income | Filing required? |
|---|---|
| ≤ TWD 1 million | No (ignore entirely) |
| > TWD 1 million | Yes, but don't panic |
| > TWD 7.5 million | Yes — 20% tax on the portion above 7.5M |
Common Misconceptions
❌ Only need to report if I bring money back to Taiwan
✔ Repatriation has no effect on your filing obligation
❌ I didn't sell anything, so I don't need to worry
✔ Dividends still count as overseas income
Is US Stock Trading Still Worth It?
As a Taiwan-based investor, the US taxes foreign investors very differently from US residents.
You may have seen rules like:
- Short-term (< 1 year): 10%–37%
- Long-term (≥ 1 year): 0% / 15% / 20%
These apply to US tax residents (citizens, green card holders). If you're a Taiwan resident and have submitted a W-8BEN, the rules are typically:
| Item | US Tax |
|---|---|
| Capital gains (buy/sell spread) | Usually not taxed |
| Stock dividends | 30% withheld |
| Bond interest | Usually not taxed |
| ETF distributions | Depends on source |
| Estate tax | May apply above USD 60,000 |
Capital gains example:
100 shares of AAPL, bought at $100, sold at $150:
(150 - 100) × 100 = 5,000 USD
As a Taiwan investor, no US tax is withheld, so you'll see:
Realized Gain: +5,000 USD
Tax Withheld: 0 USD
Dividend example:
Apple pays $100 in dividends — the US withholds 30% first, so you receive:
100 × (1 - 30%) = 70 USD
This is why you may feel "only my dividends are taxed" — that's correct and expected.
Quick reference:
| Investor type | Capital gains tax | Dividends |
|---|---|---|
| US resident | Short-term 10%–37%, long-term 0%/15%/20% | Taxed at income rate |
| Taiwan resident (W-8BEN) | Usually 0% | 30% US withholding |
Summary
For Taiwan investors, US stock trading is tax-friendly: capital gains are generally not taxed by the US — only dividends face a 30% withholding.
The main cost to watch is wire transfer fees for moving money in and out. LINE Bank currently offers competitive rates that can significantly reduce this: