This article presents a rule-utilitarian theory which lies much closer to the social contract tradition than most other forms of consequentialism do: calculated-rates rule preference utilitarianism. Being preference-utilitarian allows the theory to be grounded in instrumental rationality and the equality of agents, as opposed to teleological assumptions about impartial goodness. The calculated-rates approach, judging rules’ consequences by what would happen if they were accepted by whatever number of people is realistic rather than by what would happen if they were accepted (...) universally or by exactly 90% of the population, allows it to select rules based not just on their ability to give good advice to their followers but also on their ability to attract followers in the first place. The result is a theory that, although fully utilitarian and not at all pluralistic or intuitionist, nevertheless offers a principled justification for giving some weight to seemingly non-utilitarian considerations: Lockean natural rights, Kantian respect for autonomy, and Scanlonian distributive justice. (shrink)