How do double tax treaties work between Switzerland and Germany or the UK?

Switzerland has double tax treaties (DTAs) with over 100 countries, including Germany and the UK, to prevent the same income from being taxed twice. The treaties allocate taxing rights: employment income is generally taxed where you work, pensions where you reside, dividends shared between source and residence countries.

Under the Switzerland-Germany DTA, Swiss employment income of German residents is taxed in Switzerland via Quellensteuer (plus 4.5% at source), with Germany applying an exemption method or credit. Swiss-source dividends paid to German residents are subject to 15% withholding (reduced from the standard 35% Verrechnungssteuer via treaty claim). The Switzerland-UK DTA works similarly for dividends (15% treaty rate) and generally exempts UK pension payments from Swiss tax if the recipient is UK-resident.

To benefit from reduced treaty rates, you typically need to submit a reclaim form to the FTA or use a Form W-8BEN equivalent. Treaty relief is not automatic — you must apply. If you are resident in Switzerland and earn income from Germany or the UK, the respective treaties define which country can tax it and whether a credit is available.

This is general information only, not professional tax advice. Consult a qualified tax professional for your specific situation.