Hojat Izadkhasti; rahim dalali isfahani; saeed samadi
Abstract
The net effects of switching from consumption taxation to inflation taxation on resource allocation and welfare crucially depend on production externalities. With elastic labor supply, raising inflation taxation decreases leisure, but increases the levels of real consumption, capital, and output. Moreover, ...
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The net effects of switching from consumption taxation to inflation taxation on resource allocation and welfare crucially depend on production externalities. With elastic labor supply, raising inflation taxation decreases leisure, but increases the levels of real consumption, capital, and output. Moreover, this tax switch has two opposing effects on the level of real money balances: A positive effect through the rise in output caused by the faster nominal money growth and a negative one through the fall in the ratio of real money balances to output. In the absence of any production, externality the negative effect dominates the positive effect. The real effect of this tax switching on resource allocation depends on the behavior of labor supply. If there is not a trade-off between leisure and labor supply, then the real effect of switching to inflaction taxation on real consumption, capital and output would disappear. With elasticity of labor supply, the welfare effect of this tax switch is conditional on the production externality. In the absence of production externality, inflation taxation always reduces welfare. With a strong enough production externality, switching from consumption taxation to inflation taxation may raise welfare by correcting the under-investment of capital and the under-supply of labor.
Saeed Samadi; Amin Haghnejad
Abstract
This paper investigates the asymmetry in volatility of returns for the Iranian stock market using the daily closing values of the Tehran exchange price index (TEPIX) covering the period from March 25, 2001 to July 25, 2012, with a total of 2743 observations. To this end, two sets of tests have been employed: ...
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This paper investigates the asymmetry in volatility of returns for the Iranian stock market using the daily closing values of the Tehran exchange price index (TEPIX) covering the period from March 25, 2001 to July 25, 2012, with a total of 2743 observations. To this end, two sets of tests have been employed: the first set is based on the residuals derived from a symmetric GARCH (1,1) model. The second set is based on the asymmetric GARCH models, including EGARCH (1,1), GJR-GARCH(1,1), and APARCH(1,1) models. To capture the stylized fact that the returns series are fat-tailed distributed, in addition to classic Gaussian assumption, the innovations are also assumed to have t-student distribution and GED (Generalized Error Distribution). The results indicate that there is no evidence of the leverage effects in the Iranian stock market, meaning that negative and positive shocks of the same magnitude have the same impacts on the future volatility level. This result is in contrast with the results of most empirical studies, where an asymmetry in volatility of stock returns has been found. This seems to be the result of the governmental or quasi-governmental nature of many companies listed on the Tehran Stock Exchange.
