7. Is there a ban on anonymous donations to political parties?

Slovakia
1. Donations and other free benefits may not be accepted by a party from [...]
h) a natural person or legal entity for which it is unable to provide the donor identification data or the identification data of the Contracting Party which provided the other consideration free of charge,[...]
Source: § 24(1) ,Law No. 85 on Political Parties and Movements, 2005 (amended 2019)