A major debate exists on whether expanding tax--favoured savings accounts such as Individual Retirement Accounts (IRAs) will increase national savings. Much of the empirical debate has centred on whether IRA contributions before the Tax Reform Act of 1986 represented new savings or merely...

This paper studies some empirical implications of models with limited risk sharing due to the imperfect enforceability of contracts. We test whether the amount by which public transfers reduce private transfers is affected by features of the economy, such as the variance of income and its...