Foreign dividends arrive net of withholding tax. A 4% pre-tax yield from a Swiss stock can become 2.6% in your account before you do anything else. The headline yield published by every screener is the gross number; your effective yield depends on the country, your residency, and the tax treaty in force. A short reference to the rates that matter most.

Common Withholding Rates (For Non-Resident Investors)

UK 0%
United Kingdom
Standard withholding on UK dividends paid to non-residents: zero. Reason London-listed dividend names (BP.L, GSK.L, ULVR.L) are often the cleanest international income source for cross-border investors.
US 30→15%
United States
Default 30% non-resident withholding. Reduced to 15% for residents of treaty countries who file W-8BEN with the broker. Most large brokers handle the form once at account opening — but verify that your broker is actually applying the treaty rate.
CH 35→15%
Switzerland
35% withheld at source. Treaty residents can typically reclaim the difference down to 15% — but reclaiming is a paperwork process that takes months and a fee, and many investors never bother. Net effect: assume 35% unless you are willing to file.
DE 26.4%
Germany
26.375% standard withholding. Reduced to 15% for treaty countries via reclaim. Same process problem as Switzerland — the reduction is theoretical for many retail investors.
KR 22%
Korea
22% withholding (15.4% income tax + 6.6% local surtax). Treaty reductions exist for some jurisdictions; verify with your broker.
HK 0%
Hong Kong
No dividend withholding tax on Hong Kong-listed stocks. (Mainland China dividends paid through Stock Connect are a separate story — typically 10% withheld.)

The Effective Yield Adjustment

Always compute the effective yield after the withholding rate that actually applies to you:

Effective Yield ≈ Gross Yield × (1 − Withholding Rate)

Then add back any portion you can reclaim through your tax return (varies by your home jurisdiction's foreign tax credit rules). This adjustment can flip a comparison: a 5% Swiss yield (3.25% net at 35%) is less attractive than a 4% UK yield (4% net at 0%) for many cross-border investors, even though the headline favours Switzerland.

The most expensive mistake in international dividend investing is comparing gross yields across jurisdictions as if they were apples-to-apples. They are not — and the gap can be 10 percentage points of net income on the same nominal payout. Always do the after-withholding math before the comparison.

Practical Workflow

  1. Confirm your broker's applied treaty rate on each foreign-listed holding. The first dividend payment is the proof — read the cash receipt against the declared dividend.
  2. For high-withholding jurisdictions (CH, DE), decide upfront whether you will reclaim. If not, treat the standard rate as your real rate when comparing.
  3. For US dividends, ensure W-8BEN is on file. Many international brokers default to the higher rate if the form is missing or expired.
  4. Track residency carefully. Moving countries can change every withholding rate on your portfolio overnight.

Headline yield is gross · your real yield = gross × (1 − withholding)
UK / HK = 0% · US 15% with W-8BEN · CH / DE 35-26% if you don't reclaim
Always do the after-tax math before comparing dividend stocks across jurisdictions

See per-stock yield in the dividend pool →