Key legal question
Whether the mixed-use property qualified as business assets so that depreciation was deductible for direct federal tax.
Extracted holding
Because the business use was only 7.6%, the property had to be allocated entirely to private assets; depreciation was therefore not deductible.
Extracted reasoning
Under the preponderance method, a mixed-use asset is business property only if it serves the self-employed activity to more than 50%. The cantonal findings on use were binding and the taxpayers did not undermine the authority's figures; the claim that the spouse worked in the business did not change the asset classification.