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

Law on Financing Political Entities and Election Campaigns (2014, last amended 2019), Article 30(1) & 24(1)

Presidential elections - For the purpose of acquiring financial resources to finance the election campaign costs, the candidate shall open a separate giro account with an institution authorised for payment operations, on the following day from the day of his candidacy being registered and/or verification of the candidate list, of which they shall inform the Agency within three days from the day of opening the separate giro account, and that account shall not be used for any other purpose.

Parliamentary and local elections - For the purpose of acquiring financial resources to finance the election campaign costs, the political entity shall open a separate giro account with an institution authorised for payment operations, on the following day from the day of verification of the candidate list at the latest, of which it shall inform the Agency within three days from the day of opening the separate giro account, and that account shall not be used for any other purpose.