Key legal question
Whether foreign property losses on a French secondary home must reduce the direct federal tax base in Switzerland.
Extracted holding
No; under Art. 6 para. 3 LIFD such foreign losses are taken into account in Switzerland only for the tax rate, not for the taxable base.
Extracted reasoning
The statutory rule expressly reserves foreign losses for rate determination, and the Switzerland-France treaty does not allocate the deduction of mortgage interest or maintenance overruns to Switzerland.