Abstract: Web-based royalty system and user interface is described. In one embodiment, for example, a Web-based royalty system of the present invention is described that comprises: an interface for receiving product information comprising products subject to royalties; an interface for receiving sales data comprising sales records for the products; an interface for receiving royalty terms for the products; a calculation engine for calculating royalties due for the sales data, by matching each sales record with a given product listed in the product information, and determining for each matched product royalties due based on royalty terms applicable to sales of that product; and a statement generator for generating royalty reports of the calculated royalties.