Croatia - 2006 Party Finance Law

Title Article 3
Chapter II. FUNDS FOR THE WORK OF POLITICAL PARTIES
Section Membership fee and voluntary contributions
Article

3

Within the meaning of this Act, a membership fee is a regular financial amount paid by a member of a political party in the manner and under the conditions stipulated by the statute or another legal act of a political party.
Within the meaning of this Act, voluntary contributions (donations) are temporary or regular inpayments provided by natural or legal persons to a political party on a voluntary basis and exceeding the membership fee, as well as the provision of services or products to a political
party without compensation.
Natural and legal persons shall make out an invoice for voluntary contributions (donations) provided to a political party in the form of products or services, containing the market value of the product or service provided and an indication that it is made out to a political party and is not subject to payment.
Political parties shall keep records of the membership fees and voluntary contributions (donations) received and shall issue receipts thereof.
Services referred to in paragraph 3 of this Article do not include voluntary work rendered by party volunteers.

Categories - Party finance (Private funding)
Source http://aceproject.org/ero-en/regions/europe/HR/the-act-on-the-financing-of-political-parties/view