For some people, charitable giving is not obvious territory for economists. There is a view that giving money to charity is not a rational activity and by implication not something that economists have much to say about. However, this narrowly equates being rational with acting purely in one’s self-interest and the two are not necessarily the same thing. In practice, giving to charity involves making decisions about how to allocate limited resources decisions over how much to give in total, whether to give time or money, and whether to give to one charity or another. Unless these decisions are made randomly, it must be that individuals are using some criteria to try to make the best decisions, even if they are maximising with respect to something fuzzy like “warm glow” This leads into territory where incentives are likely to matter and where economics is likely to have something to say.