3. Is there a ban on corporate donations to political parties?

Article 26, para. 5  and para 6, letter e) of the Law on Political Parties  nr. 294, of 21.12.2007

There is no ban but there's a ceiling on donations from legal persons (businesses, corporates) to political persons of 400 average salaries in a fiscal year or 120 000 EUR. 1 average salary in Moldova for 2018 is  6 150 MDL = 300 EUR. 

In the same time, legal persons who, at the date of the donation, have outstanding debts older than 60 days to the state budget, to the state social insurance budget or the mandatory health insurance fund is prohibited from donating to political parties.