Artikel 15 Overeenkomst tussen de Regering van het Koninkrijk der Nederlanden en de Regering van de Spaanse Staat tot het vermijden van dubbele belasting met betrekking tot belastingen naar het inkomen en het vermogen

Article 15 Independent personal services 1 Income derived by a resident of one of the States in respect of professional services or other independent activities of a similar character shall be taxable only in that State unless he has a fixed base regularly available to him in the other State for the purpose of performing his activities. If he has such a fixed base, the income may be taxed in the other State but only so much of it as is attributable to that fixed base. 2 The term “professional services” includes especially independent scientific, literary, artistic, educational or teaching activities as well as the independent activities of physicians, lawyers, engineers, architects, dentists and accountants.