The neoclassical growth model is extended to include costly intermediated borrowing and lending between households. This is an important extension as substantial resources are used to intermediate the large amount of borrowing and lending between households. In 2007, in the United States, the...

A problem that faces many countries including the United States is how to finance retirement consumption as the population ages. Proposals for switching to a saving-for-retirement system that does not rely on high payroll taxes have been challenged on the grounds that welfare would fall for some...