Key legal question
Whether the rental value for federal direct tax was assessed too high
Extracted holding
The assessed rental value of CHF 14,000 was sustainable and did not violate federal tax law.
Extracted reasoning
The tax authority could rely on the official property valuation and the 5% guideline; the specific features invoked by the taxpayers had already been sufficiently considered in the official valuation, and temporary underuse due to the husband's weekday absence did not justify a reduction.