Petroleum fiscal systems are arrangements for sharing the economic value from petroleum extraction between the host nation and the companies engaged in the extraction. In most countries, oil and gas resources are under the control of the national Government. The activities of exploiting the resources are undertaken by firms, some of which are owned by the state. Petroleum resource management therefore is an interaction of two key parties: The enterprises which carry out operations of finding and extracting petroleum from the ground, and the Government as custodian of the resources on behalf of the host nation which ultimately owns them. The book reviews the various instruments which may form the petroleum fiscal system of a jurisdiction, with numerous examples from countries having configured their systems very differently. It also reviews fiscal valuation and control, related cross-border issues, and the economic analysis and design of fiscal systems related to a variety of development scenarios found in modern petroleum operations.