27. Are there provisions requiring donations to go through the banking system?

Art. 15. 2., Art. 16  Political Parties Law, 2005.  Political Parties Law, 2005. https://constitutionnet.org/sites/default/files/political_parties_law_et.pdf   

Art 15 (2)Political parties... "Political parties shall register all its income and deposit it in a bank account."

Art. 16 (2) In order to carry out its financial affairs, the leadership of the political party shall appoint one or more authorized representatives and introduce their signatures to the relevant bank.