Abstract
The paper explores the potential effect of intergovernmental grants (IGG) on sub-national (local) environmental policy in a federal structure. In the model, a politically-inclined local government receives campaign contributions from the polluters’ lobby in return for lower pollution taxes. A benevolent federal government uses IGG as an incentive to reduce the resulting distortion in the local pollution tax. IGG are formulaic transfers that are conditional on pollution levels—lower pollution in a sub-national jurisdiction relative to others translates into a higher share of the grant and vice versa. In equilibrium, the grant effect reduces the distortion created in the pollution tax by the lobby effect, and may even lead to a higher than Pigouvian tax when the local government assigns a large enough weight on social welfare and/or when the grant is large enough. Further, IGG result in the tax levels of jurisdictions becoming interdependent in an interesting way. Environmental policies in two jurisdictions may become strategic complements or substitutes depending on their relative pollution levels. The possibility of strategic substitution implies that federal welfare may not increase even when environmental policy becomes stricter in one state.
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Notes
The “race-to-the bottom” hypothesis argues that the principle of decentralization can be undermined if sub-national governments choose less stringent environmental policy, as compared to a centralized equilibrium, in order to attract new industry, capital or jobs. No consensus, however, has emerged in the empirical or theoretical literature on the hypothesis. For instance Oates and Schwab (1988) show that inter-jurisdictional competition can be efficiency-enhancing under certain assumptions. Other papers show that policy distortions depend on a number of other factors, such as the choice of the policy instrument and distribution of ‘pollution rents’ (Wellisch 1995), number of homogenous jurisdictions (Kunce and Shogren 2002), use of capital taxation for the provision of non-environmental public goods (Oates and Schwab 1988; Kunce and Shogren 2005), and presence of imperfect competition in the polluting industry (Markusen et al. 1995; Levinson 1997). See Oates (2001) for a discussion on the topic.
The grant covers the period 2010–2015 and equals Rs. 150 billion (roughly 2.5 billion USD), constituting about 4.7 % of total grants-in-aid to states. As an example of the allocation formula, the share of each state in the forest sub-grant depends on (1) its share in the country’s total forest area; (2) percentage of forested area in its total geographical area relative to the national average; and (3) a weight reflecting the quality of forests. The formula used is:
$$\begin{aligned} G_i= \frac{\left( \frac{F_i}{\sum F_i} +R_i\right) * \left( 1 + \frac{M_i +2H_i}{A_i}\right) }{\sum _{i=i}^n \left[ \left( \frac{F_i}{\sum F_i}+R_i\right) * \left( 1 + \frac{M_i +2H_i}{A_i}\right) \right] }, \end{aligned}$$where, for the \(i{th}\) state, Gi: share in grant, Fi: total forest area, Mi: moderately dense forest area, Hi: highly dense forest area, Ai: geographical area, and Ri: \(max[0,\left[ \frac{F_i}{A_i}-\frac{\sum F_i}{\sum A_i}\right] /100]\).
The model can be extended to the use of IGG to correct other forms of local distortions such as those arising due to inter-jurisdictional pollution spill-overs. An extension of the model along these lines has been characterized and is available with the authors.
In another context, Curtis Eaton (2004) analyzes the taxonomy of social dilemmas defined in terms of plain and strategic complementarity or substitution in the pay-off functions of firms in the provision of both private and public goods, when firms behave as Cournot or Bertrand duopolists. Plain complementarity (substitution) refers to the cross-effects in the pay-off functions being positive (negative), while strategic complementarity (substitution) implies that cross-effects in marginal pay-off functions are positive (negative). In comparison, our paper derives the possibility of joint strategic substitution and complementarity in policy responses (here, pollution taxes) of the state governments. The best-response functions in Curtis Eaton (2004) are assumed to be linear (through a specific choice of pay-off functions), while they turn out to be non-linear in general in our paper.
Demand for \(x\) is independent of \(t\). A change in \(t\) affects the local production of \(x\) and there is a proportional change in imports to meet the final demand for \(x\). In order to avoid any inter-jurisdictional interactions due to import/export, we assume that imports are sourced from a third jurisdiction or another nation.
It is assumed here that the share of industrialists in the total population is insignificant and hence their share in the pollution tax revenue is negligible.
As explained by Grossman and Helpman (1994), \(\delta \) can also be understood as \(\frac{\delta _2}{\delta _1\,-\, \delta _2}\) with \(\delta _1\) and \(\delta _2\) representing weights that the government attaches to campaign contributions and net (of campaign contributions) welfare, where it is assumed that \(\delta _1 > \delta _2\), i.e. politicians value a dollar in their campaign coffers higher than in the hands of the public. This assumption implies no restrictions on the size of the parameter \(\delta \).
IGG have been used by governments to compensate for inter-jurisdictional benefit spillovers, influence local priorities, and create macroeconomic stability in depressed regions etc (Shah 2003).
Implicit here is that environmental quality corresponds directly with emissions in each state.
This requires that in each state, the damage due to pollution is very steeply rising (\(D''\) is large enough) or that damage due to pollution is steeply rising and the relative weight on welfare is high (\(D''\) and \(\delta \) are large). Specifically, the second condition requires that \(\delta , \delta ^* >1\), i.e. the weight on pure social welfare net of campaign contributions is greater than half the weight on campaign contributions.
If we view the grant as compensation to the state economy for the pollution tax, this result can be related to the literature that examines how the use of pollution tax revenue can itself be an instrument for creating political support for the tax. For example, Cremer et al. (2004) demonstrate the possibility of lower (higher) than Piguouvian taxes depending on who determines the refunding rule (constitutional planner or majority voters) and who benefits more from it (owners of capital or labour). Marsiliani and Renstrom (2000) find that earmarking of pollution tax revenue for abatement serves as a partial solution to the time-inconsistency problem in environmental policy. More recent work examines the influence of refunding rules on the response of the polluters’ lobby to the imposition of the tax (see for instance Aidt 2010; Fredriksson and Sterner 2005). In this paper, we assume that the grant money is redistributed to the citizens but as an extension it will be interesting to study the effect of different uses of the grant on the equilibrium level of the pollution tax.
Mathematically, it is straightforward to show that \(\frac{\partial t}{\partial \delta } >0,\,\frac{\partial t^*}{\partial \delta ^*} >0\).
Specifically, given our stylized model, the specific condition is that emissions in one state should not be more than twice the other—see Appendix 3 for detailed proof.
Their paper does not specifically go into whether a county’s strategic response (complementarity vs substitutability) to its neighbor’s policy is also shaped by its relative level of CUs, as suggested by our model.
It is easy to see using (12) and the corresponding expression for state 2 that the sum of direct welfare effects of a change in \(T\) in the two states will be given by \(\frac{\partial W^F}{\partial T} =\frac{e^*}{e\,+\,e^*} + \frac{e}{e\,+\,e^*}= 1\).
This result can also be inferred directly from (16). Given that \(\frac{dt}{dT}\) and \(\frac{dt^*}{dT}\,>0\), there is higher tax in both states following an increase in T. In turn, this has two effects on welfare. One, it leads to higher welfare in each state due to a diversion of bribes into welfare. This is captured by a decline in lobby surplus in each state (\(\frac{e}{\delta },\,\frac{e^*}{\delta ^*}\)), which we know from (7), leads to a proportional reduction in bribes. Two, lower emissions in a state lead to a reduction in the grant share of the other state, reducing the latter’s welfare (captured by the second expression within each bracket). For a large enough \(T\), the direct positive welfare effect within a jurisdiction can be outweighed by the negative cross-effect in the other jurisdiction, especially when corruption levels are low.
The normalization of grant shares by \(\frac{1}{N-1}\) is necessary to ensure that the shares add up to one.
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Acknowledgments
The authors are grateful to Krishnendu Ghosh Dastidar, Indira Rajaraman and two anonymous referees whose suggestions have helped to improve this paper considerably. Useful suggestions received at the 3rd AERE Summer Conference, 2013 and the 20th EAERE Summer Conference, 2013 on earlier versions of this paper are acknowledged. The usual disclaimers apply.
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Appendices
Appendix 1: Firm-level Production Decisions
From Sect. 2.1, Eqs. (2) and (3) implicitly define the equilibrium values of \(x\) and \(a\) as functions of the pollution tax, \(t\). Using the implicit function rule for a simultaneous \(2\) equation case (\(F^1(x,a,t)=0\) and \(F^2(x,a,t)=0\)), for the system of equations represented by Eqs. (2) and (3), respectively, we get the following:
\(\frac{\partial x}{\partial t} = \frac{J_1}{J}\), where \(J\) is
and \(J_1\)=
Here, \(J\) is unambiguously \(>0\) from the second-order conditions for profit maximization. If the production function is sufficiently concave in abatements costs, \(J_1\) can be assumed to be \(<0\), implying \({\partial x}/{\partial t} <0\).
Likewise, \(\frac{\partial a}{\partial t} = \frac{J_2}{J}\), where \({J_2}\), is given by:
Once again, \({J_2}\,>0\) and \(\frac{\partial a}{\partial t}>0\) if the production function is sufficiently concave in production costs.
Appendix 2.1: Comparative Statics with Respect to \(T\)
By totally differentiating Eq. (13), and rearranging terms, we get:
Similarly totally differentiating Eq. (14) and rearranging terms:
Writing the resulting system of equations in matrix notation, we get:
where the value of the l.h.s determinant \(rg-hf\), is given by:
This uses the fact that the term (\(r\)) in expression (25) can also be written as \(\frac{\Delta }{\delta \frac{\partial e}{\partial t}}\) and the term (\(g\)) in expression (26) can be written as \(\frac{\Delta ^*}{\delta ^* \frac{\partial e^*}{\partial t^*}}\), where \(\Delta \) and \(\Delta ^*\) are the SOC’s of the objective functions of states \(1\) and \(2\) respectively.
In (28), \(\Delta ,\,\Delta ^*,\,\frac{\partial e}{\partial t},\,\frac{\partial e^*}{\partial t^*} <0\). Further given that \((e-e^*)\) and \((e^*-e)\) necessarily have the opposite signs, it follows that \(rg-hf >0\).
Using Cramer’s Rule, we have
Thus we have, for the case when \(e \lessgtr e^*\):
-
\(\frac{dt}{d T} > 0\)
-
\(\frac{dt^*}{d T}\) is ambivalent in sign
The r.h.s in (29) has two terms. The first term represents a (positive) direct effect of a change in \(T\). The second represents a second-order effect of \(T\) via a change in \(t\). Assuming that first-order effect dominates, we can infer that \(\frac{dt^*}{d T} >0\), though the incentive effect of the higher grant is somewhat muted for \(t^*\) due to the expected increase in \(t\).
Appendix 2.2: Comparative Statics with Respect to \(\delta \)
Totally differentiating Eqs. (13) and (14), and writing in matrix notation, we have:
Using Cramers’s rule, we can get the comparative static results with respect to \(\delta \) from (22) as follows:
Given that \(rg-fh >0\), it is easily seen that \(\frac{dt}{d\delta }>0\). However, \(\frac{dt^*}{d\delta } \gtrless 0\) according as \(e^*\lessgtr e\)
Appendix 3: Conditions for Concavity of the Best Response Functions
From Eq. (13), we can derive the slope of the best response function \(t=f(t,t^*)\) as follows: \(\frac{d^2 f(t^*)}{dt^{*^2}}= A*(K+ L + M + N)\), where
For concavity, we need \((K+L+M+N)<0\). By inspecting the above expressions closely, we can infer that for both cases, \(e<e^*\) and \(e>e^*\), concavity will require that \(D''\) be large, \(\Delta \) be large enough and \(e^* \ngtr 2e\). Similarly, from \(\frac{d^2t^*}{dt^2}\), we get the necessary condition for concavity as \(D^{*''}\) large, \(\Delta ^*\) large enough and \(e \ngtr 2e^*\). Together, the necessary conditions for the concavity of the best-response functions may be written as: \( e \ngtr 2e^*;\,e^* \ngtr 2e;\,D'',\,D^{*''}\) be large and \(\Delta ,\,\Delta ^*\) be large enough.
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Datt, D., Mehra, M.K. Environmental Policy in a Federation with Special Interest Politics and Inter-Governmental Grants. Environ Resource Econ 64, 575–595 (2016). https://doi.org/10.1007/s10640-015-9888-y
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DOI: https://doi.org/10.1007/s10640-015-9888-y
Keywords
- Endogenous environmental policy
- Environmental federalism
- Inter-governmental grants
- Lobbying
- Pollution tax