This paper studies the role of family size in the design of optimal income taxation. We consider a second best setting where the government observes the number of children and the income of the parents but not their productivity. With a linear tax schedule the marginal tax rate is shown to decrease with the number of children, while the relationship between the demogrant and family size appears...

The objective of this study has been to develop a typical specification of the Almost Ideal Demand System (AIDS) for Iran’s composition of imports including capital, intermediate and consumer goods. Accordingly, we first test the hypotheses that import demand is homothetic, homogeneous, symmetric, and depends on domestic prices. Then, we estimate the long-run elasticities of the composition o...

Replication-defective acute leukemia viruses E26 and myeloblastosis virus (AMV) cause distinct leukemias although they belong to the same subgroup of oncogenic avian tumor viruses based on shared transformation-specific (onc) RNA sequences. E26 causes predominantly erythroblastosis in chicken and in quail, whereas AMV induces a myeloid leukemia. However, upon cultivation in vitro for >1 month, ...

there is always a considerable difference between the corporate performance and the tax levy that is identified by the taxation authorities which has become a common practice. this fact has led to no fairness among taxpayers, a fact that influences the horizontal and vertical sides of equity. horizontal equity is created when people feel the benefits of the tax gain that is proportional to the ...

We examine exogenous changes in state corporate income taxes over the 1988-2006 period and find that tax decreases significantly boost both the quantity, measured by the number of patents, and the quality, measured by citations per patent, of innovative output, while tax increases have little impact on innovation. Most of the impact of tax changes on innovation occurs two or more years after th...

We study corporate income tax competition when firms operating in multiple jurisdictions can shift income using financial planning strategies. Several such strategies, particularly intra-corporate lending, appear to be actively pursued by companies to reduce subnational corporate taxes in Canada. A simple theoretical model shows how interjurisdictional tax planning can give rise to asymmetries ...

Is there a role for anonymous markets in which trades cannot be monitored by the government? We study an economy in which agents have private information and a benevolent government controls redistributive tax policy. While unrestricted access to anonymous markets reduces the set of policy instruments available to the government in general, it also limits the scope of inefficient redistributive...

the theoretical base of this paper is the economic growth model that completed with capital stocks (private and public) and human capital. at the first, hypothesis test about constant returns to scale is studied, and then the related variables with macroeconomic policies are added to the model. the results show that 1) the aggregate production function exhibits increasing returns to scale, 2) p...

Why do so many African governments consistently impose high tax rates and make little investment in productive public goods when alternative policies could yield greater tax revenues and higher national income? We posit and test an intertemporal political economy model in which the government sets tax and R&D levels while investors respond with production. Equilibrium policy and growth rates de...