This chapter explores the terms of letters patent for internal colonial government. It observes that every patent to a private colonizer prescribed a balanced colonial constitution: Some type of independent legislature in the colony, separate from the colonial executive, was to consult on laws and taxes. The chapter presents a strategic model to explain why this served the crown’s interest: An independent colonial legislature could restrain excessive extraction from colonists by colonial executives, which the crown itself – given the distance and its limited capacity – could not do.