Inclusive growth in Africa: Do fiscal measures matter?
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Mamman, Suleiman O.; Kazi Sohag; Abubakar, Attahir Babaji Article Inclusive growth in Africa: Do fiscal measures matter? Cogent Economics & Finance Provided in Cooperation with: Taylor & Francis Group Suggested Citation: Mamman, Suleiman O.; Kazi Sohag; Abubakar, Attahir Babaji (2023) : Inclusive growth in Africa: Do fiscal measures matter?, Cogent Economics & Finance, ISSN 2332-2039, Taylor & Francis, Abingdon, Vol. 11, Iss. 2, pp. 1-14, https://doi.org/10.1080/23322039.2023.2273604 This Version is available at: https://hdl.handle.net/10419/304254 Standard-Nutzungsbedingungen: Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden. Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen. Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Terms of use: Documents in EconStor may be saved and copied for your personal and scholarly purposes. You are not to copy documents for public or commercial purposes, to exhibit the documents publicly, to make them publicly available on the internet, or to distribute or otherwise use the documents in public. If the documents have been made available under an Open Content Licence (especially Creative Commons Licences), you may exercise further usage rights as specified in the indicated licence. https://creativecommons.org/licenses/by/4.0/
Cogent Economics & Finance ISSN: (Print) (Online) Journal homepage: www.tandfonline.com/journals/oaef20 Inclusive growth in Africa: Do fiscal measures matter? Suleiman O. Mamman, Kazi Sohag & Attahir B. Abubakar To cite this article: Suleiman O. Mamman, Kazi Sohag & Attahir B. Abubakar (2023) Inclusive growth in Africa: Do fiscal measures matter?, Cogent Economics & Finance, 11:2, 2273604, DOI: 10.1080/23322039.2023.2273604 To link to this article: https://doi.org/10.1080/23322039.2023.2273604 © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. Published online: 02 Nov 2023. Submit your article to this journal Article views: 847 View related articles View Crossmark data Citing articles: 1 View citing articles Full Terms & Conditions of access and use can be found at https://www.tandfonline.com/action/journalInformation?journalCode=oaef20
DEVELOPMENT ECONOMICS | REVIEW ARTICLE Inclusive growth in Africa: Do fiscal measures matter? Suleiman O. Mamman 1 , Kazi Sohag 1 and Attahir B. Abubakar 2 * Abstract: In recent times, Africa has experienced remarkable economic growth; nonetheless, this advancement remains far from being considered inclusive, given the persistently high levels of poverty and income inequality across the continent. To this end, this study investigates the role of fiscal policy measures on inclusive growth using absolute and relative pro-poor measures of growth. The study utilizes panel data from 48 African countries spanning the period 1996 to 2020 and employs the Panel System Generalized Method of Moments (GMM) technique for analysis. Estimation results reveal a concerning trend where public debt service exacerbates both poverty and income inequality, underscoring the adverse consequences of mounting public debt pressures in the region. Interestingly, while government expenditure reduces inequality and worsens poverty, an increase in taxation reduces poverty but worsens income inequality. Further, an increase in taxation negatively affects the income shares of the bottom and middle-income groups while the top-income groups benefit. The findings of this study have significant policy implications for improving inclusive growth in the continent. Subjects: Development Studies; Development Policy; Economics and Development; Regional Development; Sustainable Development; Political Economy; Economics Keywords: inclusive growth; poverty; income inequality; debt service; government expenditure; taxation; Africa; fiscal policy; sustainable growth JEL classification: E25; E62; H24; H25; I32 1. Introduction The concept of inclusive growth has gained attention due to the central place it holds in the economic development of countries (Aoyagi & Ganelli, 2015; Ngepah, 2017; Ranieri & Ramos, 2013; Sen, 2014). Several countries pursue inclusive growth policies to eradicate poverty and income inequality while also fostering long-term development. This becomes critical in a country’s development pattern as it entails a sustainable, broad-based, and paced growth process. This study is motivated by the increased misalignment between economic growth and inclusive growth (in this case proxied by income inequality and poverty) in Africa. The study also aligns with some of the Sustainable Development Goals (SDG) of the United Nations that aim to eradicate poverty and other deprivations. Specifically, the goals are as follows: 1 - “End poverty in all its forms everywhere” and 10 - “Reduce inequality within and among countries”. According to UNSDG (2021, 2022), COVID-19 has reversed more than four years of progress against poverty. In addition, the Mamman et al., Cogent Economics & Finance (2023), 11: 2273604 https://doi.org/10.1080/23322039.2023.2273604 Page 1 of 14 Received: 10 June 2023 Accepted: 17 October 2023 *Corresponding author : Attahir B. Abubakar, School of Business and Creative Industries, University of the West of Scotland, Paisley PA1 2BE, UK E-mail: [email protected] Reviewing editor: Goodness Aye, Agricultural Economics, University of Agriculture, Makurdi Benue State, Nigeria Additional information is available at the end of the article © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.
pandemic also widened income inequality between nations in a generation. This is anticipated to reverse the decline in inequality since the global financial crisis of 2007–2009. According to the World Economic Forum (2018), countries such as Norway, Iceland, Luxembourg, and Switzerland have been identified as the leading countries in terms of inclusive growth (see also Samans et al., 2015, 2017). On the other hand, developing countries such as Zimbabwe, Malawi, Lesotho, and Mozambique are among the countries with the least inclusive growth. Most of these countries are in the African continent. Although most African countries have enjoyed stable economic growth in the decade before COVID-19, this has not translated into a significant improvement in the economic well-being of the populace, with poverty and inequality still being a key challenge (see Figure 1). Effectively addressing the state of poverty in the region has remained challenging because the sectors responsible for inclusive economic growth are impeded by wage disparities and insufficient skilled labour (Mutiiria et al., 2020). Heshmati et al. (2019) noted that the growing income disparity between the rich and the poor, both between and within countries, has heightened the need to better understand the underlying causes of inequality and develop policy initiatives capable of effectively addressing the income gap. In addition, unchecked income disparities can erode a country’s comparative advantage, causing political and social unrest (Stiglitz, 2012, 2016). Furthermore, widening inequality can weaken consumption levels in a way that sees those at the top spend a smaller percentage of their income than poorer segments of society Stiglitz (2016). Income inequality could constrain the poor and vulnerable from accessing opportunities that drive growth. Concerning this, Nolan et al. (2012) echoed that income inequality is not healthy and could inhibit long-term growth. In addition, a significant income gap between the rich and the poor can make it difficult for the poor to access adequate educational and medical opportunities (Neckerman & Torche, 2007). Improved education and medical services are key to achieving more productivity, therefore, any Figure 1. Poverty and income inequality in selected African countries. Source: World Bank PovcalNet & World Inequality Database. Mamman et al., Cogent Economics & Finance (2023), 11: 2273604 https://doi.org/10.1080/23322039.2023.2273604 Page 2 of 14
distortion to aggregate productivity may limit the long-term economic progress of a country. Fiscal policy tools in the form of expenditures and taxes can be employed to address income inequality. For instance, Stiglitz (2016) demonstrates that based on a country’s growth pattern, welfare system, and level of fiscal constraint, the government can use a variety of fiscal policies, including tax and benefit systems, to reduce inequality and the negative consequences of that inequality. Given the foregoing, this study sets out to determine the impact of fiscal measures on inclusive growth in Africa. More specifically, the study examines the impact across the socio-economic indicators of poverty and inequality. Given that inclusive growth is thought to be pro-poor, previous studies on inclusive growth looked at the use of economic indicators in determining inclusive growth. These include per capita GDP (Amponsah et al., 2021; Anand et al., 2013; Oyinlola & Adedeji, 2021; Oyinlola et al., 2020; Tella & Alimi, 2016), and employment growth (Ianchovichina & Lundström, 2009). In contrast to prior studies (Aslam & Farooq, 2019; Aslam & Shabbir, 2019; Aslam et al., 2021; Ghouse et al., 2022; Nchake & Shuaibu, 2022; Oyinlola & Adedeji, 2021; Oyinlola et al., 2020; Zulfiqar et al., 2016), this study employs a disaggregated measure of inclusive growth. This approach is adopted for two primary reasons: firstly, to mitigate the potential bias that may arise from aggregating variables, and secondly, to assess the individual responsiveness of each component of inclusive growth to fiscal measures. This disaggregated measure is particularly useful in cases where the government aims to address issues sequentially. The study further considered the use of various fiscal policy measures not relying only on tax but also on government domestic spending and debt servicing. In addition, the dynamic effect of these fiscal measures on the distribution of income was examined. The findings of the study indicate that government expenditure has the effect of reducing inequality and impairing poverty. Conversely, a rise in taxation has the consequence of reducing poverty but exacerbating income inequality. In the prior scenario, it is posited that government expenditure tends to exhibit an inclination for unproductive or regressive distribution such as debt service. Additionally, it is suggested that this expenditure may potentially contribute to inflationary pressures, thereby limiting its ability to enhance the living conditions of poor people or fulfil their fundamental requirements. However, in the latter scenario, the observed effect could be attributed to the increased tax-to-GDP ratio, particularly when it surpasses the threshold level of 15% set by the World Bank. This phenomenon is commonly observed in many African countries and is believed to have a positive impact on welfare by providing additional resources for social development. Considering the income group model, the study observed that debt servicing increases the income of the top earners while decreasing the income of the lowest earners. This could be attributed to the fact that all income groups are taxed, but in some cases, the top class receive a rebate because they are often the government’s fund lenders. In addition, it was observed that government expenditure has a positive impact on the Top 1% and Top 10% income groups, but a negative impact on the middle 40 and bottom 50 income groups. It is however important to state that these findings are limited to the observed relationship for African countries; consequently, generalization of the findings should be pursued with caution. 2. Literature review Several approaches to inclusive growth have been identified in the literature. These approaches include the World Bank approach, the Asian Development Bank’s approach, the OECD approach, and the UNDP approach among others. The World Bank approach could be identified with the work of Ianchovichina and Lundström (2009). The World Bank defines inclusive growth as growth that is paced and broad-based across all sectors of the economy, with most of the country’s labour force making substantial contributions. On the other hand, the Asian Development Bank’s approach (Ali & Son, 2007; Asian Development Bank, 2011; Rauniyar & Kanbur, 2010a, 2010b) sees inclusive growth as growth accompanied by equity and fairness as well as providing economic opportunities for all (Asian Development Bank, 2011). However, the approach is argued to render inclusive growth analytics unworkable because it requires determining how everyone contributed to such growth (Ngepah, 2017). The OECD (2014, 2016) approach is based on three broad pillars: Mamman et al., Cogent Economics & Finance (2023), 11: 2273604 https://doi.org/10.1080/23322039.2023.2273604 Page 3 of 14
multidimensionality, distributional considerations, and policy impact. The multidimensionality pillar asserts looking beyond the traditional growth measures of GDP-based, and GDP per capitabased linked welfare to include additional important dimensions of people’s well-being that promote their productive capacity in the economy and society, such as social relations and happiness. The distributional pillar also necessitates analyses of distribution that consider the distributions of multidimensional well-being beyond income (per capita). The UNDP approach (Hirvay, 2011; Kjøller-Hansen & Lindbjerg Sperling, 2020) demonstrates that growth is inclusive if it occurs in sectors that employ the vulnerable and poor it notes that increasing returns to labour is, therefore, a process that benefits the poor. Kireyev and Chen (2017) provide a framework for evaluating inclusive growth based on the decomposition of the change in poverty into growth, distribution, and decile effects, which can be obtained using distributive analysis. Similarly, Anand et al. (2013) proposed a strategy that centres on the social opportunity created by social welfare. This requires not only income redistribution but also access to resources and opportunity equity. In addition, McKinley (2010) identified three strands of measures, including poverty and inequality measures (horizontal (share of the population below the set poverty target level) and vertical (Gini coefficient and income share of the poorest 60% of the population)). This study relies on the premise of fiscal policy theory and assumes that it serves as a stability policy for achieving economic stability. For instance, the traditional Keynesian fiscal policy was designed to stimulate aggregate demand and subsequently boost aggregate output. In this regard, Tanzi and Zee (1997) points out that modern monetary and fiscal policy transcends stabilization into income redistribution as well as resource reallocation. This is supported by Gavin and Hausmann (1998) who argue that low fiscal deficits promote economic growth by lowering the likelihood of a financial crisis. Also, Gupta et al. (2002) and Li and Sarte (2004) contend that personal income tax progressivity programs could be implemented as a strategy for improving equity. A fiscal system could be in the form of government spending or a tax system, all of which have implications for inclusive growth. Studies such as Mutiu Abimbola Oyinlola and Adedeji (2021) and Whajah et al. (2019) found that the size of the government, measured by government expenditure, has a substantial effect on inclusive growth. Similarly, Kneller et al. (1999) argued that distorting tax systems can impede growth because an efficient and equitable tax system is a crucial component of a growth-promoting strategy. According to Mckay (2002), fiscal policy measures are an important tool for governments to influence income distribution and poverty, but the relationships between fiscal policy and poverty are not well understood. For instance, Gunasinghe et al. (2021) and Muinelo-Gallo and Miranda Lescano (2022) found evidence of a trade-off between efficiency and equity, noting that increasing redistributive spending reduces income inequality while slowing economic growth. According to these studies, a direct tax would be an effective means of reducing income inequality. On the other hand, reduced nonredistributive spending could promote both efficiency and equity objectives, especially in countries with structural budget deficits. A handful of empirical studies have attempted to identify determinants of pro-poor growth (Kakwani et al., 2003; Ravallion, 2004; Siwar et al., 2021) and inclusive growth. Along this line, Aoyagi and Ganelli (2015) observed that redistributive fiscal policy and monetary policies are effective at fostering inclusive growth. Also, Amponsah et al. (2021) found the impact of government spending on inclusive growth varies based on informality and financial inclusion. Mutiu Abimbola Oyinlola and Adedeji (2021) point out that both aggregate and disaggregated taxes have no significant impact on inclusive growth. However, evidence suggests that all aspects of governance have an impact on inclusive growth. For instance, Satrio et al. (2019) establish that government spending on education and health has a positive and significant impact on inclusive growth, whereas RGDP has a positive but insignificant impact. Similarly, Alekhina and Ganelli Mamman et al., Cogent Economics & Finance (2023), 11: 2273604 https://doi.org/10.1080/23322039.2023.2273604 Page 4 of 14
(2020) find that fiscal redistribution, female labour force participation, productivity growth, FDI inflows, digitalization, and savings contribute significantly to inclusive growth. In line with this, Ofori and Asongu (2021) emphasize the importance of FDI and ICT diffusion in promoting inclusive growth. It was also discovered that poorer people benefit more from infrastructure than rich people, indicating that infrastructure plays an important role in income distribution (Mutiiria et al., 2020). 3. Methodology This study follows the lead of Chenery et al. (1974) and Shorrocks et al. (1976) who advocate poverty reduction through income redistribution. This aligns with Li and Sarte (2004) who suggest that the change in progressiveness has a significant impact on income inequality. Similarly, McKinley’s (2010) method identified three strands of measures of inclusive growth which include poverty and inequality measures. Likewise, this study utilizes the percentile measure of inequality to determine the fiscal sensitivity of each quartile measure of inequality. The functional model is given as. Where IG is the inclusive growth measure. FPS is the fiscal policy measure (tax to GDP ratio, debt service, and government expenditure). The model controls other factors such as GDP, Institutional quality, Remittance, and ICT. Hence, the extended empirical model takes the form of: North (1990) argues the significance of institutional quality in guaranteeing efficiency, hence its inclusion in the model. Through the efficient allocation of resources and economic liberty, the institutionalization of good governance practices stimulates economic growth, promotes income redistribution, and tackles income equality (Acemoglu et al., 2006). The role of governance in enhancing resource mobilization and inclusive growth cannot be overstated. Indeed, the SSA has made some progress in governance as evidenced by the peaceful transition of power in its member countries (Oyinlola et al., 2020). Benmamoun and Lehnert (2013) and Cazachevici et al. (2020) found evidence that international remittances boost economic growth, and this could also influence poverty. Alekhina and Ganelli (2020) and Ofori and Asongu (2021) identify information and communication technology (ICT) and digitalization as significant drivers for inclusive growth. 3.1. Estimation technique This study employs the System Generalized Method of Moments estimator for analysis due to potential endogeneity in the model. The system GMM estimator combines moment conditions for the model in first differences with moment conditions for the model in levels to deal with endogeneity. The GMM estimator accounts for the dependent variable’s persistent nature, the omitted variable problem, measurement error, reverse causality, and cross-sectional heterogeneity (Arellano & Bond, 1991; Arellano & Bover, 1995; Blundell & Bond, 1998; Roodman, 2009). When the number of cross-sections is greater than the number of periods (N > T), the GMM estimator is efficient. The Hansen test of overidentification restrictions is used to test the overall validity of the instruments and the Arellano-Bond second-order serial correlation test is used to assess the consistency of the estimated model (Roodman, 2009). The two-step system GMM was used in this study. The panel model specification of the empirical model is presented as follows: Mamman et al., Cogent Economics & Finance (2023), 11: 2273604 https://doi.org/10.1080/23322039.2023.2273604 Page 5 of 14
Where Zit is a vector of control variables that includes Institution, Remittance, and ICT, εit is the white noise error term. Given that different measures of inclusive growth are adopted, IGit is given as Poverty, Gini coefficient, and Income distribution, all to be estimated in separate models. 3.2. Data and sources Table 1 presents a detailed description of the data used in the study. Based on data availability, the study covers the period 1996 to 2020. 4. Empirical results and discussion This section presents the estimated result and the discussion of the findings. Table 2 reports the descriptive statistics for the variables used in the study. Table 2 reveals that Africa has suffered from extreme poverty and income inequality. A maximum poverty level of over 95% of the population is observed, while the most extreme case of income inequality is a Gini coefficient score of 0.84. The Table further shows that the average level of income inequality score (Gini) in the region is 0.62 with an average poverty incidence of about 40% of the population. This underscores the enormity of the development challenges in Africa hence the need for quick and effective policy actions. 4.1. Fiscal measures and poverty in Africa Table 3 reports the poverty model estimates. Model 1 of the equation shows the relationship between poverty and debt servicing. Here, debt servicing increases poverty indicating a significant adverse effect on the poor across all models. This could be due to channelling Table 1. Data description Variable Description Source Pov Share of the population in extreme poverty World Bank PovcalNet Gini Gini-coefficient measure of inequality which ranges from 0 to 1. World Inequality Database Top1 Share of income of the top 1% in a country. Top10 Share of income of the top 10% in a country. Mid40 Share of income of the middle 40% in a country. Bot50 Share of income of the bottom 50% in a country. tax Tax to GDP ratio Debts Debt service on external debt (US $) World Development Indicators Gov. General government final consumption expenditure (% of GDP) IQ A Principal component of world governance indicators (includes voice & accountability, political stability, government effectiveness, rule of law, and control of corruption) remit Remittances from citizens abroad (US $) ICT Individuals using the Internet (% of the population) Mamman et al., Cogent Economics & Finance (2023), 11: 2273604 https://doi.org/10.1080/23322039.2023.2273604 Page 6 of 14
resources that could be used for social development towards debt servicing, thereby increasing the vulnerability of the poor. The effect could be compounded by the fact that Africa’s debt is largely external, hence the debt service payment is largely to creditors outside the African economies. More so, according to ONE (n.d.), African countries accumulated a total external debt of US$644.9 billion as of the year 2021. Furthermore, it is projected that these countries will be obligated to make external debt service payments amounting to about US $68.9 billion in the year 2023. The report additionally indicates that a total of 21 African countries with low-income status are currently experiencing or at risk of debt distress. This signifies that the countries encounter challenges in fulfilling their debt obligations or are anticipated to encounter such challenges in the immediate future. Fitch Ratings (2022) projected that the combined external debt service burden of countries it rates in subSaharan Africa (excluding South Africa) is expected to rise from 2023 through 2025. Furthermore, this burden is expected to remain notably higher than the average level observed from 2019 to 2021. This implies that enormous resources that could be used for poverty reduction measures could be directed towards external debt servicing. The negative effect of external debt servicing is likely to be higher than internal debt because external debt servicing transfers resources out of the economy. Consequently, the worsening effect of public debt service on poverty could be attributed to the significant external debt burden of African countries. Model 2 shows the relationship between poverty and government expenditure. Government expenditure is found to have a positive and significant impact on poverty. The worsening effect could be based on two factors. Firstly, as argued by Millsap (2021), government spending, if not properly managed could be inflationary and reduce the real purchasing power of the poor. Inflation’s transmission effect could be considered strong because it affects consumption patterns as the poor have a high marginal propensity to consume. Secondly, it is observed that government spending in Africa is largely skewed towards recurrent expenditure. Model 3 presents the impact of the tax-to-GDP ratio on poverty. The result reveals a reducing effect of taxation on poverty. Gaspar et al. (2016) and Raul and Bernard (2018) infer that the incidence of poverty in countries with low tax-to-GDP ratios is relatively higher. The studies argued that an increase in tax to GDP ratio especially above the threshold level of 15% benchmark may be welfare improvement as this will provide additional resources for social development. A cursory view of Figure 2 reveals that the average tax-toGDP ratio of the sample African countries is below the 15% threshold level. This probably explains why the reduction effect of an increase in taxation on poverty is only significant at a 10% level. Table 2. Descriptive statistics Variable Obs Mean Std. Dev. Min Max pov 1,185 40.00 25.11 0.13 95.29 gini 1,272 0.62 0.06 0.49 0.84 Top1 1,272 0.17 0.05 0.09 0.64 Top10 1,272 0.51 0.07 0.38 0.80 mid40 1,272 0.36 0.04 0.15 0.43 bot50 1,272 0.12 0.03 0.05 0.19 IQ 1,324 0.00 2.19 −6.26 5.52 debts 1,189 0.59 1.14 −7.16 4.09 remit 1,086 18.57 2.24 9.35 24.11 ICT 1,262 10.30 15.44 0.00 84.12 Source: Author’s computation from sourced data. Mamman et al., Cogent Economics & Finance (2023), 11: 2273604 https://doi.org/10.1080/23322039.2023.2273604 Page 7 of 14
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