1. Is there a ban on donations from foreign interests to political parties?

Article 12, Political Parties Act, the amended version of law in force from 23.03.2015, No. RT I 1994, 40, 654.

12.3 (8) donations by aliens are prohibited, except for donations by persons holding the permanent right of residence or the status of a long-term resident in Estonia.

§ 12.1.(2) A political party may receive income only from the following sources:
1) membership fees established on the basis of the articles of association of the political party;
2) allocations from the state budget under this Act;
3) donations made on the terms and conditions laid down in this Act (donation can be voluntarily given by a natural person who is a citizen of the Republic of Estonia or has the permanent right of residence or the status of a long-term resident in Estonia out of their assets to a political party or a member thereof for the purpose of supporting the activities of the political party)
4) transactions with the property of the political party.