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

"(1) Natural persons and legal entities may give contributions to political parties once or several times in a calendar year. (2) The contributions shall be paid to the transaction account of the political party’s headquarters."

Source: Aricle 6, LAW ON POLITICAL PARTY FINANCING 2012 (with 2016 amendments)

Not necessarily directly, but all donations and contributions need to be deposited within 10 days to the bank account after recieving