The Neutrality of the Resource Rent Tax

Although less distorting than conventional royalties and income tax, the resource rent tax is strictly neutral only if the interest rate at which losses are carried forward relates correctly to the discount rate employed by investors in project evaluation. Thus it is possible in principle to design a resource rent tax that is strictly neutral only if parameters are set independently for each minerals investment. Such attempts to tailor parameters to each investment would make great demands on information and would increase business uncertainty. The paper suggests expedients to reduce the costs of non-neutrality when resource rent tax is applied with parameters that are of general application and discusses their use in Australia.     

Progressive taxation and the intensity and timing of investment

This paper examines the effect of progressive taxation on a firm's investment intensity and timing decisions using a real options approach. The firm possesses a perpetual option to invest in a project at any instant by incurring an irreversible investment cost at that time. The amount of the irreversible investment cost determines the intensity of investment that augments the value of the project. Tax progression is specified in a particular case of a constant marginal tax rate with an exogenously given tax exemption threshold that makes the average tax rate increase with the tax base. We show that the firm's investment decisions are neutral to tax progression only when the exogenously given tax exemption threshold is sufficiently large. When tax neutrality does not hold, we show that progressive taxation has a perverse effect on investment intensity. Finally, we show that progressive taxation induces the firm to invest earlier as compared to the case under proportional taxation (i.e., in the absence of any tax exemption).     

Progressive taxation,tax exemption,and corporate liquidation policy

This paper develops a real options model of a firm that operates in continuous time with an infinite horizon. The firm receives stochastic profit flows that are subject to progressive taxation. Tax progression arises from an exogenously given tax exemption threshold that makes the average tax rate increase with the tax base. The firm possesses an option to liquidate its operation, which is optimally exercised when the firm's profit flow reaches an endogenously determined threshold level (the liquidation trigger) from above. We show that the firm's liquidation trigger under progressive taxation increases with either a reduction in the tax exemption threshold or an increase in the corporate income tax rate. Corporate income taxes are thus not neutral when tax schedules are progressive.     

PROGRESSIVITY AND REDISTRIBUTION IN NON‐REVENUE NEUTRAL TAX REFORMS: THE LEVEL AND DISTANCE EFFECTS

Kakwani and Reynolds–Smolensky indices are used in the literature to measure the progressivity and redistributive capacity of taxes. These indices may, however, show some limits when used to make normative assessments about non‐revenue neutral tax reforms. Two approaches have traditionally been taken to overcome this problem. The first of these consists of comparing after‐tax income distributions through generalized Lorenz (concentration) curves. The second approach is based on the decomposition of changes in the Reynolds–Smolensky index into changes in the average tax rate and variations in progressivity. Nonetheless, this decomposition between the average tax rate and progressivity may be further exploited to obtain some information that can be relevant to assess tax reforms. The main aim of this study is to draw up some indicators that can be useful to quantify the effects of non‐revenue neutral tax reforms. These indicators are used to investigate the last personal income tax reforms that have taken place in Spain.     

On Corporate Tax Asymmetries and Neutrality

This article discusses the effects of corporate tax asymmetries under investment irreversibility. We introduce a tax scheme where the tax base is given by the firm's return net of a rate of relief. When the firm's return is less than the imputation rate, however, no tax refunds are allowed. Unlike symmetric tax systems, the scheme proposed is neutral with respect not only to income uncertainty but also to policy uncertainty.     

A general proposition on the design of a neutral business tax

A simple and general means of levying a business tax that is ‘neutral’ in the sense that it does not affect the firm's decisions at the margin is discussed. In particular, we analyze the effect of a business tax of our design on the investment decision of the firm. The well-known ‘imputed income’ and ‘immediate write-off’ methods of levying a neutral business tax are found to be special cases of our general tax design. The implication of our results is that a neutral ‘pure profits’ tax can be levied without the informational difficulties of the imputed income method or the cash flow disadvantages of the immediate write-off method.     

Changing the Tax Mix

A tax mix change, including a component of the Australian tax reforms, involves a net increase in taxation of consumption and a net decrease in income taxation. If the tax mix change is approximately aggregate revenue neutral and retains current vertical equity, the new income tax rate schedule must be more progressive than the current schedule. The Australian proposal involves a revenue shortfall and some erosion of vertical progressivity. For the large proportion of households who save very little, the tax mix change has negligible effects on incentives and efficiency, and on total tax paid.     

Asymmetric Taxation under Incremental and Sequential Investment

This paper discusses the effects of an asymmetric tax scheme on incremental and sequential investment strategies. The tax base is equal to the firm's return, net of an imputation rate. When the firm's return is less than this rate, however, no tax refunds are allowed. This scheme is neutral under both income and capital uncertainty.     

S-based taxation under default risk

This article studies the characteristics of a S-based tax system under default risk. In particular we show that its neutrality properties depend on whether debt is protected or unprotected. In the former case, this system is neutral. In the latter case, where default timing is optimally chosen by shareholders, the S-based system is neutral with respect to real decisions only if the firm's and the lender's tax rate are equal. However, the shareholders' decision to default is always distorted.     

税制、制度变迁与企业并购的关系研究

随着我国企业并购交易活动的日益活跃和不断发展壮大,我国现行并购税制的完善建设问题也日渐凸出,从理论上对企业并购与并购税制之间的关系进行解析,是探究完善我国企业并购税制的逻辑起点。通常而言,企业并购交易是效率的选择,课于该交易的税收应保持中性,并购税制的变迁及优化完善依赖于税制结构、税种、税率、税基、税收优惠政策及税收征管办法等要素的设计选择。企业并购税制安排应着重从所得税设计、免税并购及免税并购适用条件的设定和完善并购制的时机选择等三个方面考虑。     

Taxation for the 21st century: the automated payment transaction (APT) tax

This paper examines the desirability and feasibility of replacing the present system of personal and corporate income, sales, excise, capital gains, import and export duties, gift and estate taxes with a single comprehensive revenue neutral Automated Payment Transaction (APT) tax. In its simplest form, the APT tax consists of a flat tax levied on all transactions. The tax is automatically assessed and collected when transactions are settled through the electronic technology of the banking/payments system. The APT tax introduces progressivity through the tax base since the volume of final payments includes exchanges of titles to property and is therefore more highly skewed than the conventional income or consumption tax base. The wealthy carry out a disproportionate share of total transactions and therefore bear a disproportionate burden of the tax despite its flat rate structure. The automated recording of all APT tax payments by firms and individuals eliminates the need to file tax and information returns and creates a degree of transparency and perceived fairness that induces greater tax compliance. Also, the tax has lower administrative and compliance cost. Like all taxes, the APT tax creates new distortions whose costs must be weighted against the benefits obtained by replacing the current tax system.     

LONG‐RUN GROWTH AND WELFARE EFFECTS OF TAX REFORM

This paper introduces an endogenously‐determined fertility rate into a Romer‐type endogenous growth model and, accordingly, investigates the effects on fertility, economic growth and social welfare of a revenue‐neutral tax reform that involves switching from an income tax to a consumption tax. We show that, in a departure from the existing literature, tax reform could be harmful, rather than favourable, to both growth and welfare, due to an endogenous fertility rate. We also conduct a simple numerical analysis to investigate under what conditions the negative effect on growth and welfare occurs.     

Welfare Effects of National Taxes in an Economy with Regions

The present paper illustrates that changes in national commodity and income tax rates will affect the location choices of mobile factors of production within an economy with regions as well as the total supply of these factors to the economy. It is also argued that revenue (expenditure) neutral changes in the tax mix, for example, an increase in the commodity tax combined with a decrease in the income tax rate, will affect the domestic distribution of mobile factors, their supply to the economy and social welfare. In other words, revenue neutrality should not be used as a guide to the welfare effects of tax mix changes.     

中国均衡性转移支付对地方政府收入行为的激励效应评估*——基于动态空间工具变量与空间杜宾模型分析

本文基于全国县级面板数据，采用动态空间工具变量模型和空间杜宾模型，从地方政府收入行为视角对均衡性转移支付的激励效应进行评估。结果表明：均衡性转移支付对地方政府收入行为具有双重作用。在直接效应方面，其在一定程度上缓解了地方政府的财政压力，且不会对地方政府造成直接税收扭曲影响。但在间接效应方面，均衡性转移支付会引致地区间扭曲的税收竞争。其产生的税基效应和税率效应相互抵消，对地方政府的征税努力的影响不显著，对地方政府的财政收入行为呈现中性影响，并未产生正向激励效应。     

中国均衡性转移支付对地方政府收入行为的激励效应评估*——基于动态空间工具变量与空间杜宾模型分析

本文基于全国县级面板数据，采用动态空间工具变量模型和空间杜宾模型，从地方政府收入行为视角对均衡性转移支付的激励效应进行评估。结果表明：均衡性转移支付对地方政府收入行为具有双重作用。在直接效应方面，其在一定程度上缓解了地方政府的财政压力，且不会对地方政府造成直接税收扭曲影响。但在间接效应方面，均衡性转移支付会引致地区间扭曲的税收竞争。其产生的税基效应和税率效应相互抵消，对地方政府的征税努力的影响不显著，对地方政府的财政收入行为呈现中性影响，并未产生正向激励效应。     

Investment under Uncertainty, Debt and Taxes

It is common practice in financial derivative valuation to use a discount factor based on the riskless debt rate. But, to what extent is this discount factor appropriate for cash flows emerging in capital budgeting? To answer this question, we introduce a framework for real asset valuation that considers both personal and corporate taxation. We first discuss broad circumstances under which personal taxes do not affect valuation. We show that the appropriate discount rate for equity‐financed flows in a risk‐neutral setting is an equity rate that differs from the riskless debt rate by a tax wedge due to the presence of personal taxation. We extend this result to the valuation of the interest tax shield for exogenous debt policy with default risk. Interest tax shields, which accrue at a net rate corresponding to the difference between the corporate tax rate and a tax rate related to the personal tax rates, can have either positive or negative values. We also provide an illustrative real options application of our valuation approach to the case of an option to delay investment in a project, showing that the application of Black and Scholes formula may be incorrect in presence of personal taxes.     

Labor Taxation in Search Equilibrium with Home Production

Conventional models of equilibrium unemployment typically imply that proportional taxes on labor earnings are neutral with respect to unemployment as long as the tax does not affect the replacement rate provided by unemployment insurance, i.e. unemployment benefits relative to after–tax earnings. When home production is an option, the conventional results may no longer hold. This paper uses a search equilibrium model with home production to examine the employment and welfare implications of labor taxes. The employment effect of a rise in a proportional tax is found to be negative for sufficiently low replacement rates, whereas it is ambiguous for moderate and high replacement rates. Numerical calibrations of the model indicate that employment generally falls when labor taxes are raised.     

Progressive taxation and corporate liquidation policies with mean-reverting earnings

This paper develops a real options model of an all-equity financed firm that receives mean-reverting earnings and is subject to progressive taxation. Tax progression arises from an exogenously given tax exemption threshold such that the firm pays no corporate income taxes should its earnings be less than this threshold. The firm possesses a perpetual option to liquidate its operation for a deterministic salvage value at any time. We show that the firm optimally exercises the liquidation option at the first instant when its earnings reach an endogenously determined threshold (the liquidation trigger) from above. Using numerical analysis, we show that the liquidation trigger is higher or lower than the exogenously given tax exemption threshold, depending on whether the tax exemption is below or above a unique critical level, respectively. We further show that the liquidation trigger is strictly decreasing for all tax exemption thresholds less than the critical level, and can be hump-shaped for all tax exemption thresholds greater than the critical level, especially when the salvage value is small. Corporate income taxes as such are not neutral when tax schedules are progressive.     

Growth and Welfare Effects of Tax Cuts: The Case of a Productive Public Input with Technological Risk

This paper analyzes the dynamic impact of tax cuts within a stochastic model of endogenous growth with a congested public input. A decreasing taxation of deterministic income parts leads to the well-known positive growth effect. Nevertheless, due to the insurance effect associated with the taxation of stochastic income flows, the overall growth impact of taxation is ambiguous. It is shown that the optimal structure of financing government expenditure does not only depend on the degree of rivalry but also on the degree of risk aversion. The optimal real value of government debt decreases with a rise in congestion. We identify that in the case of proportional congestion, the base for tax cuts should be the growth neutral consumption tax. Maximizing the growth rate does not automatically coincide with maximizing welfare. Hence, the base for tax cuts gains importance to realize a welfare optimal policy.     

Tax effects on equilibrium locations

Using a Hotelling-type model with elastic demand functions and spatial discrimination, we show that, in contrast with previous results obtained with inelastic demand functions, neither ad valorem nor unit taxes are neutral for equilibrium locations. In fact, the higher is the tax rate the lower is the equilibrium distance between firms.