The provision of public goods often benefits a larger group than those who can actively provide the public good. This paper addresses institutional arrangements between subjects who can provide a public good (insiders) and subjects who also benefit from the public good but cannot provide it (outsiders). Using laboratory experiments, we compare a setting of passive outsiders to situations where outsiders can either make unconditional or conditional transfers to the insiders. The primary behavioral question is to what extent outsiders will use the opportunity to subsidize the contributions of insiders and how insiders respond to those subsidies. On average, whether transfers are unconditional or conditional, insiders tend to substitute transfers for their own contributions. Transfers and contributions to the public good tend to decrease across decision rounds, leaving provision levels of the public good lower than a baseline condition with no opportunities for transfers from outsiders.