The paper develops a model in which a number of charities (or other no
nprofit firms) provide various bundles of public goods or services thr
ough private donations. The motivation for individuals to found and op
erate such firms is that it allows them to influence the mix of public
goods. It is their decisions regarding the allocation of donations ac
ross uses that matter in the end. Donors to these firms take into acco
unt the allocation decisions that will be made by the organizations to
which they contribute. We find a propensity for such organizations to
specialize in the provision of services, and further find that divers
ification by such firms diminishes the equilibrium level of contributi
ons they will collect. We demonstrate the possibility that a commitmen
t by a monopoly charity to an allocation rule that is, ex-post, privat
ely sub-optimal can eliminate this effect, and may therefore be advant
ageous, ex-ante. The allocation rule which accomplishes this involves
honouring donor designations of their contributions to specific uses.
This is a policy that is frequently adopted by local chapters of the U
nited Way. (C) 1997 Elsevier Science S.A.