This document outlines a study on sustainable financing mechanisms for integrated water resource management in Lao PDR. It discusses the country's abundant water resources and emphasizes water's important role in social and economic development. It then examines current laws and regulations related to water resource management and fee collection. Several potential fee structures and rates for different water-using sectors like hydropower, mining, agriculture, and tourism are proposed. Challenges in implementation including lack of skilled staff and funds at local levels are also noted. The future plan is to further develop methods to calculate water resource fees across all sectors and pilot payment for ecosystem services schemes.