In the real world, taxes and cap-and-trade systems are rarely implemented in their pure form. In this paper, we examine a related approach that has been used widely in practice—which we refer to as an “offset.” The idea behind offsets is to encourage firms or entities that may not be a...

Information markets are markets for contracts that yield payments based on the outcome of an uncertain future event, such as a presidential election. They have the potential to improve decision making and policies throughout the economy. At the same time, there are regulatory hurdles to...