ARTICLE 14
Independent Personal Services
(1) Income derived by an individual who is a resident of a Contracting State in respect of professional services or other activities of an independent character shall be taxable only in that State. However, such income may also be taxed in the other Contracting State if such services or activities are performed in that other State and if:
- (a) he has a fixed base regularly available to him in that other State for the purpose of performing those services or activities; or
- (b) he is present in that other State for the purpose of performing those services or activities for a period or periods amounting in the aggregate to 183 days or more in any continuous period of 12 months.
In such circumstances, only so much of the income as is attributable to that fixed base or is derived from the services or activities performed during his presence in that other State, as the case may be, may be taxed in that other State.
(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.