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....

Output-based payments are an important tool of government policy. Sometimes governments offer "output-based aid" to subsidize services sold to households. Because output-based payments are tied to the delivery of outputs, they have an obvious advantage over input-based payments. In agreeing to...

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...

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...

Accounting devices that artificially reduce the measured fiscal deficit can be analyzed as transactions involving unrecognized assets and liabilities. Different accounting systems recognize different sets of assets and liabilities and are thus vulnerable to different sets of devices. Some...