The Toolkit for Ecosystem Service Site-based Assessment (TESSA) is a rapid, low-cost, participatory valuation tool designed to be used by non-experts for assessing the benefits that people get from nature (ecosystem services). It was created to make ecosystem service assessment more accessible and straightforward. It aims to promote better land use planning decisions by providing guidance and methods to value ecosystem services at the site level under different management alternatives. Although initially developed for conservation practitioners, there has been increasing interest in TESSA from other sectors including consultancy, business, and governments for natural capital assessments.