Article 66

1. Without prejudice to the provisions of Article 67, the most favoured- nation treatment granted in accordance with this Decision shall not apply to tax advantages which the Member States or OCTs authorities are providing or may provide in the future on the basis of agreements to avoid double taxation or other tax arrangements, or domestic tax legislation in force. 2. Nothing in this Decision may be construed so as to prevent the adoption or enforcement of any measure aimed at preventing tax fraud or avoidance or evasion of taxes pursuant to the tax provisions of agreements to avoid double taxation or other tax arrangements, or domestic tax legislation in force. 3. Nothing in this Decision shall be construed so as to prevent the respective competent authorities from distinguishing, in the application of the relevant provisions of their tax legislation, between taxpayers who are not in the same situation, in particular with regard to their place of residence, or with regard to the place where their capital is invested.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-02 · Text as adopted (Official Journal); later amendments are not incorporated in this text.