We study experimentally how taxpayers choose between two taxregimes to fund a public good. The first-best tax regime imposes ageneral, distortion-free income tax. However, this tax cannot be enforced.The second-best alternative supplements the income tax by a specificcommodity tax. This tax...

We consider a society composed of two regions. Each of them pro-vides a public good whose benefits reach beyond local boundaries.In case of decentralization, taxes collected by members of a regionare spent only on that region's public good. In case of centralization, tax receipts from the two...