56As regards the administrative burden on the tax authorities of the Member States of taxation that would result from taxpayers being allowed the opportunity to provide the information to demonstrate their income, it should be noted that administrative disadvantages are not alone sufficient to justify a barrier to the free movement of capital (see, to that effect, judgments in C‑334/02 Commission v France, EU:C:2004:129, paragraph 29; C‑386/04 Centro di Musicologia Walter Stauffer, EU:C:2006:568, paragraph 48, and C‑418/07 Papillon, EU:C:2008:659, paragraph 54).
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