Public-private partnerships (PPPs) operate at the boundary of the public and private sectors, being neither fully public nor fully private. PPPs are defined in this paper as privately financed infrastructure projects in which a private firm either: (i) sells its services to the government; or...

When governments seek private investment in infrastructure projects, they usually find themselves asked to provide grants, guarantees, or other forms of fiscal support. Often they prefer to provide support in ways that limit immediate cash expenditure but sometimes generate large costs later....

Long-term commitments to make output-based payments for infrastructure can encourage private investors to provide socially valuable services. Making good decisions about such commitments is difficult, however, unless the government understands the fiscal costs and risks of possible commitments....

Contingent liabilities create management problems for governments. They have a cost, but judging what the cost is and whether it is worth incurring is difficult. Except in the case of contingent liabilities created by simple guarantees of debt, governments usually can incur contingent...

Most government-owned utilities in developing countries perform poorly when judged as providers of electricity, in part because politicians and officials use their power, not to encourage the utilities to increase sales, improve the collection of bills, and cut costs, but to transfer resources...

Public-private partnerships (PPPs) can appeal to governments because they offer a new way of providing public services that is possibly more efficient than traditional public finance. But they can also appeal to governments because they allow new investments to be undertaken without any...

The problem of climate change seems to be a tragedy of the commons: despite the global benefits of reducing green-house gas emissions, no individual has any incentive to reduce his or her own emissions. Yet many people are making efforts to reduce emissions and putting pressure on businesses and...

Fiscal adjustment becomes like walking up the down escalator when growth-promoting spending is cut so much as to lower growth and thus the present value of future tax revenues to a degree that more than offsets the improvement in the cash deficit. Although short-term cash flows matter, a...