An important factor driving energy policy over the past two decades has been the “energy paradox,” the perception that consumers apply unreasonably high hurdle rates to energy-saving investments. We explore one possible explanation for this apparent puzzle: that realized returns fall short of the returns promised by engineers and product manufacturers. Using a unique data set, we find that the realized return to attic insulation is statistically significant, but the median estimate (9.7%) is almost identical to a discount rate for this investment implied by a CAPM analysis. We conclude that the case for the energy paradox is weaker than has previously been believed.

Dividend Taxes and Firm Valuation: New Evidence By Alan J. Auerbach and Kevin A. Hassett * The Jobs and Growth Tax Relief Act of 2003 (JGTRA03) reduced the tax rates on dividends, with the highest statutory tax rate of 35 percent falling to 15 percent. An interesting twist on the dividend tax cut was its temporary nature; the provision as passed was effective only through 2008, and (as recent Congressional deliberations have illustrated), the extension its supporters envisioned was by no means certain. This large dividend tax reduction, along with its sunset provision, offers an unusual natural research experiment on the effects of dividend taxation. The theory of dividend taxation suggests three possible scenarios for the effects of the dividend tax reduction. Under the “tax irrelevance” view, the marginal shareholder is a tax-free entity (or a taxable investor who ignores or can offset incremental taxes), and the dividend tax reduction has no effect on equity values or firm behavior. Under the “traditional” view the marginal source of equity finance is new share issuance, and the tax reduction feeds through to the firm’s user cost and stimulates extra capital formation. Share values rise in the short run but, after full adjustment, the higher capital level reduces the marginal revenue product of capital enough to offset the dividend tax reduction, leaving equity prices the same. Under the “new” view, the marginal source of finance is retained earnings and the dividend tax cut is capitalized into the share price of the firm but has no investment effect. Understanding the economic consequences of the dividend tax reduction requires knowledge of the empirical relevance of these competing views. Our previous paper (Auerbach and Hassett 2005) performed an event-study analysis of a large panel of firms to determine how firm attributes affected the valuation response over eight key event dates leading up to the 2003 legislation. Our results, taken together, rejected outright

In this paper, we propose a new measure of horizontal equity that overcomes many of the shortcomings of previous proposed measures. Our starting point is the observation that a well-behaved social welfare function need not evaluate global' (vertical equity) differences in after-tax income using the same weights it applies to local' (horizontal equity) differences, even though this constraint has been applied in the past. Following work on the structure of individual preferences, we show that a social welfare function can imply different preferences toward horizontal and vertical equity. Adopting the general approach to the measurement of inequality developed by Atkinson (1970), we use such a social welfare function to derive measures of inequality that are decomposable into components naturally interpreted as indices of horizontal and vertical equity. In particular, the former index measures deviations from the fundamental principle that equals be treated equally. Finally, we apply our new measure to two tax-return data sets, evaluating the degree to which the horizontal equity of the US personal income tax has changed over time, and how horizontal equity would be altered by one version of recent proposals to do away with the so-called marriage penalty.'

Using data on union certification elections, we estimate the impact of unionization on firms' investment behavior. Employing both a standard q model and an “investment surprises” technique, we find that union certification significantly reduces investment in the year following the election. We find that a winning certification election has, on average, about the same effect on investment in the year following the event as would—given the elasticity measures taken from the public finance literature—a 33 percentage‐point increase in the corporate tax. The magnitude of the response in years further away from the election is less certain.

We use earnings forecasts from securities analysts to construct a new measure of the neoclassical fundamentals that drive investment spending. We find that investment responds significantly to our new measure of fundamentals but is insensitive to cash flow, even for firms typically thought to be liquidity constrained. These results have two key implications. First, fundamentals may be more important for investment spending than would be suggested by the results to date from investment-q models. Second, the positive cash-flow effects obtained in such models may reflect a failure to control properly for fundamentals rather than the presence of financial constraints.