As the U.S. population ages, the growing retiree-worker ratio increases the burden of public retirement systems. Is it efficient to maintain a defined benefit social security system? Should PAYGO benefits be reduced and private retirement savings be encouraged? The paper examines these questions...

In a model where most taxpayers hold debt and face intermediation costs, returns on pension assets are less than taxpayers' cost of borrowing. Pension funding is costly and hence zero funding is optimal. The model also implies that unfunded pension promises are properly discounted at a rate...

Martin Feldstein's recent article on U.S. capital income taxes perpetuates the myth that capital gains are taxed at 15 percent: yet once the AMT, child tax credits and state taxes are taken into account, the top effective rate is at least 35.8 percent.

The rapidly growing federal government debt has become a concern for policy makers and the public. Yet the U.S. government has seemingly unbounded access to credit at low interest rates. Historically, Treasury yields have been below the growth rate of the economy. The paper examines the...

A cap on greenhouse gas emissions makes total emissions a fixed common-property resource. Population increases under a cap are therefore self-limiting: a population increase raises labor and reduces emissions per unit of labor, which lowers incomes and fertility. Because a marginal birth under a...

This paper examines a static voting model for public pensions. The key premise is that families can internalize the cost and benefits of pay-as-you-go programs. A family realizes a net gain if its members collectively receive more in benefits in the current period than they pay in payroll taxes....

This paper analyzes government commitments to ongoing spending programs that require future outlays. Spending commitments are important for understanding partisan politics because they constrain future governments. In a model with one government good, a 'stubborn liberal' policy maker can use...