18. Is there a limit on the amount a donor can contribute to a candidate?

Art 11,
The total amount of donations made by a natural person to a political party, independent deputy, national minority deputy, member of the representative body of a local and regional governmental unit, independent slate or candidate shall not exceed HRK 30,000.00 (thirty thousand Croatian kuna) within a single calendar year.

'The total amount of donations made by a legal person within a single calendar year shall not exceed (ii) HRK 100,000.00 (one hundred thousand Croatian kuna) when such donations are made to an independent deputy, a national minority deputy, and an independent slate or a candidate for national minority deputy in the election of deputies to the Croatian Parliament and the election of members of the European Parliament; and HRK 30,000.00 (thirty thousand Croatian kuna) when such donations are made to an independent member of the representative body of a local and regional governmental unit and an independent slate or a candidate in elections at the local or regional level.' 

(Source: Political Activity and Electoral Campaign Financing Act, 2011)