4. Is there a ban on corporate donations to candidates?

(3) It is prohibited the financing or material support in any form of the activity of political parties,initiative groups, electoral campaigns / electoral contestants by:
a) legal persons from abroad, including those with mixed capital, by other states or international organizations, including international political organizations;[…]
d) public authorities, organizations, enterprises, public institutions, other legal entities financed from the public budget or which have state capital, except in cases where the provision of services or material support is expressly provided by law;
e) legal entities that, in the last three years before the beginning of the electoral period, have concluded public procurement contracts for works, goods or services within the meaning of Law no. 131/2015 on public procurement, as well as by legal entities with foreign or mixed capital;
Source: Art. 41(3), Electoral Code, 1997 (amended 2020)

There is no ban on corporate donations to political parties. However, the limit on the amount of the donation as well as the limitation of the types of legal entities applies.