The aim and purpose of the thesis is to present the conceptual definition of crowdfunding - how it helps entrepreneurs in financing entrepreneurial ventures and how it is applied in the practical part of business. The paper presents the advantages and disadvantages of crowdfunding, which can improve or worsen the business, which depends on the entrepreneur and his knowledge of crowdfunding, as well as the analysis of the success of the project, which the entrepreneur must do before entering crowdfunding. Crowdfunding is a movement that has been developed in the world for years, and in Croatia it has experienced its rise in recent years. It is an alternative way of financing various entrepreneurial ventures that helps the entrepreneur in the success of his business, and is mostly used in the modern age of business. Crowdfunding brings to the entrepreneur a financial and marketing advantage that actually attracts participants, more precisely investors for the crowdfunding campaign and later good promotion of the organization. The paper analyzes the theoretical concepts that represent the basis for the implementation of a successful crowdfunding campaign. The theoretical approach in the work explains the terms: crowdfunding, crowdfunding platforms, types of crowdfunding, advantages and elements that make a successful crowdfunding campaign. The research in the paper is based on successful examples of crowdfunding in Croatia and the world. The examples given show how to develop campaigns and use crowdfunding in the best possible way. The work is based on the relevant literature that was used for the theoretical part of the work, while the practical part of the work is based on researched examples that represent the success of crowdfunding.