Artikel 3

1. For the purposes of this Convention, unless the context otherwise requires:
a) the terms "applicant State" and "requested State" mean respectively any Party applying for administrative assistance in tax matters and any Party requested to provide such assistance;
b) the term "tax" means any tax or security contribution to which the Convention applies pursuant to Article 2;
c) the term "tax claim" means any amount of tax, as well as interest thereon, related administrative fines and costs incidental to recovery, which are owed and not yet paid;
d) the term "competent authority" means the persons and authorities listed in Annex B;
e) the term "nationals", in relation to a Party, means: i. all individuals possessing the nationality of that Party, and
ii. all legal persons, partnerships, associations and other entities deriving their status as such from the laws in force in that Party.
i. all individuals possessing the nationality of that Party, and
ii. all legal persons, partnerships, associations and other entities deriving their status as such from the laws in force in that Party.
For each Party that has made a declaration for that purpose, the terms used above will be understood as defined in Annex C.
2. As regards the application of the Convention by a Party, any term not defined therein shall, unless the context otherwise requires, have the meaning which it has under the law of that Party concerning the taxes covered by the Convention.
3. The Parties shall notify one of the Depositaries of any change to be made to Annexes B and C. Such change shall take effect on the first day of the month following the expiration of a period of three months after the date of receipt of such notification by the Depositary in question.