The role of fiscal policy on poverty reduction in South Africa

This paper presents the results of ridge regression analysis of the relationship between government spending in emancipation programmes and multidimensional poverty, focusing on South Africa. Through the Principal Component analysis, we retained three variables of this relationship, affected by a range of factors, to determine the size and direction of the relationship. Besides health, we find no clear evidence that government spending on housing and social security significantly reduces multidimensional poverty. Co-production in housing, healthcare delivery, and social security should be encouraged.


Introduction
The United Nations (2021) posit that poverty lacks resources necessary for long-term survival, such as food, health, and education.Hunger and malnutrition are examples of poverty, including social prejudice, marginalisation, and a lack of involvement in decision-making.Around 11 million South Africans (18.9%) live on less than US$1.90 (R27.66)daily or R800 per month.Of this population, about 4 million live in multidimensional poverty, which includes poor health, hunger, a lack of clean water, insufficient access to healthcare, and substandard housing [49,50].
According to [5] p. 6, "Poverty is a challenge that developing countries can overcome through, among others, good economic and social policies, innovative and efficient use of resources, investments in technological advancement, good governance, and visionary leadership with the political will to prioritise the needs of the poor".These factors enable providing schools, clinics, roads, power, and drinking water, which are essential for human dignity, good health, and economic prosperity ( [5] p. 6 and Sachs [41]).Heshmati et al. [18] found that targeted transfers to low-income, vulnerable, and disadvantaged populations were effective for inclusive growth and poverty reduction in OECD nations.
Structural fiscal reforms can help the poor by promoting the efficient and focused use of government resources in areas like budgeting and treasury management, governance, transparency, accountability, and public administration (World Bank 2022, [31] p. 4).Of prominence is fiscal policy, which is the focus of this study [11,19,21,26,42,51,52].Farayibi et al. [15] p. 4 define fiscal policy administration as the mechanisms of government expenditure to alleviate poverty, increase per capita income, and ultimately result in economic growth and development.
Musgrave's [30] theory of public expenditure growth centres on government spending patterns.It postulates that economic growth and development are due to substantial public sector investment.The public sector oversees road construction, transportation, sanitation, law and order, health, education, and housing.This spending is necessary to grow, sustain, and reduce poverty.As the economy grows, public spending will shift from infrastructure to education, health, and welfare.Thus, government spending will rise to provide equal opportunities for all.
The Peacock and Wiseman [38] model predicts that during times of war or other economic shocks, there will be an increase in government spending offset by higher taxes.The government will spend more on health care, education, safe drinking water, and sanitation due to more tax money.This will help people get out of poverty and reach other development goals.
Fiscal policy affects poverty by increasing revenue through progressive taxes, targeted transfers and programs, and quality spending to support the poor.Both personal and corporate income taxes, fairly and equitably, benefit the rich, while public expenditure is reallocated to help the poor and marginalised groups towards alleviating poverty [34] p. 8. Public spending can help fight poverty by increasing the disposable income of lowincome households and indirectly improving their nutrition, health, and education [2].
Public spending on education, health, safety nets, subsidies, grants, social benefits, infrastructure development, economic affairs, and agricultural expenditures might significantly alleviate poverty [7,4,25] posits that the share of total income committed to social spending reflects the government's commitment to aligning opportunities and alleviating poverty and social exclusion.Enami, Lustig, and Aranda [14] postulate that a country's redistributive potential is determined by the scales, content, and financing of government spending and the progressivity of all taxes and spending combined.
According to the Department of Social Development (DSD) [12], in terms of social services, the government has created a comprehensive social protection system that includes unconditional cash transfers, the bulk of which are intended to reduce the high rate of poverty afflicting vulnerable low-income groups.The South African government enacted a programme of action to improve public services, expenditures, and poverty.The programme focuses on infrastructure development, the allocation of resources to rural areas, housing subsidies, social protection, economic affairs, health, education, and safety and security.These programmes contribute to the battle against poverty in South Africa [7].
Stats SA (2021) [45] reported an increased distribution of money to other organisations, most notably in the form of cash transfers (social grants) to provincial governments, extra-budgetary accounts and funds, as well as capital transfers to public businesses, which drove a 12 percent increase in government spending.Social benefits were estimated to account for 11% of total national government spending.A 17% increase over 2018/19 was primarily attributed to increased social grant payments to households.According to the estimates, safety and security spending dominated government wage expenditures, followed by the defence sector with 18 percent."The public service, economic, and community development programmes are the fastest-growing over the medium term, and most spending will be distributed to education and culture (R402.9 billion), social development (R335.2 billion), and health (R248.8 billion) in the 2021/22 financial year" [31].Although the government spends large amounts on social services to reduce poverty, the rate of poverty remains high in South Africa at 55.5% [45].Furthermore, the trend has been on a trajectory since 2011-2021.
Moreover, despite government expenditure on targeted policy interventions for poverty reduction, most South Africans live in poverty.These conditions are worsened by COVID-19 and corruption, which is rife in all government sectors.Government officials and stakeholders must practise the principles of good governance in disseminating their duties and administering social assistance programmes geared towards poverty reduction.
Therefore, this study analyses the relationship between fiscal policy and poverty reduction in South Africa on the hypothesis that government expenditure has a negative effect on poverty reduction in South Africa-this drawing from high incidences of poverty is mirrored by governance challenges in the administration of fiscal instruments.
Binger [6] p. 2 posits that it is only through economic growth that widespread poverty can be reduced because "in generalised poverty (as in most developing nations), available resources in the economy, even if fairly divided, are hardly sufficient to supply the fundamental requirements of the people on a sustainable basis".According to the ILO (2021) [20], the poorest in developing countries, particularly in Sub-Saharan Africa, Asian countries, and some Latin American countries, lacks access to necessities and socioeconomic services.Poverty reduction strategies are vital to improving access to essential services.
The relationship between government expenditure and income poverty is subjective and varies for various reasons.First, the type of spending is likely to be determined.Government transfers and subsidies can directly decrease poverty by raising impoverished households' actual disposable ("post-fiscal") income [3 , 36].It can also indirectly improve poor households' nutrition, health, and education, leading to "pre-fiscal" income.Government expenditure on essential health and education services, as well as some types of infrastructure (e.g.rural roads, water and sanitation, and housing), is usually thought to relieve poverty by raising impoverished households' productivity and earning capacity [37], Nuru and Gereziher [32].These forms of government spending are most likely to alleviate income poverty and are frequently called "pro-poor".Heitger [17].
The paper makes methodological contributions utilising the principal components analysis and ridge regression against the multidimensional poverty index and government-expenditure on health, housing, social protection, and education.
The rest of the paper is presented as follows: After the introduction, the literature review is followed by the materials and methods, discussion conclusions, and policy recommendations.

Methods
This section presents the materials and methods of the study.First, a discussion of the data and variables used, followed by the operationalisation of the empirical models used in estimation.

Data
The South African government spends an estimated R2 trillion annually, most of which is allocated to government expenditure [31].Government expenditure for the period 2010-2021 was used, with a focus on social protection, education, health, housing, and community amenities as variables to be tested to determine whether these measures have been effective in poverty reduction in South Africa [45], Quantec Easy View data, 2021.
The Global Multidimensional Poverty Index (MPI), Headcount Ratio, and Intensity of Deprivation comprise various elements that contribute to a poor person's experience of deprivation, such as poor health, a lack of education, and poor living standards.The MPI is composed of two components: The headcount ratio (H) (% of people) and the intensity or rate of poverty (A).The headcount ratio is the proportion of the poor population based on the weights and the poverty cutoff.The intensity of poverty is defined as the proportion of weighted deprivation indicators; it is measured in percentage values [35].The level of deprivation among people experiencing poverty can change over time.This is called "dimensional monotonicity", and it means that if a low-income family is deprived in another way, the intensity of their poverty goes up (Ismail et al. 2015:7).This study's poverty data are drawn from the OPHI Global MPI from 1995 to 2021.

Empirical model
For this study, a quantitative correlational design based on the PCA, a data reduction technique and ridge regression were used to determine the impact of fiscal policy (Government expenditure) on poverty reduction in South Africa.

The PCA model
The PCA was used as a data reduction technique in selecting variables for the multiple linear regression techniques.According to Li et al. [24], principal component analysis is an estimate that transforms data into a new coordinate system based upon orthogonal linear transformation to minimise variance.The PCA process converts observations of potentially correlated variables into a set of linearly uncorrelated variables called principal components using an orthogonal transformation [23:191].
In the standard exploratory data analysis tool context, PCA requires a dataset with observations on p numerical variables for each n dataset.These data values define an n × p data matrixX , whose jth column represents the vector xj of observations on the jth variable, is defined by these data value p n-dimensional vectors x1, ..., xp [22].These linear combinations can be expressed as follows: Equation ( 1) indicates how to maximise variance stepby-step while considering uncorrelation with earlier linear combinations.Since the covariance in two such combinations is zero, these are uncorrelated, X a k and X a k ′ , is given by a k′ ′S a k = k a k′ ′a k = 0ifk′ � = k .X a k This is given by the principal components represented in linear combinations.
Using Eq. ( 2), the Eigen composition of the covariance matrix S can be linked to the singular value decompo- sition of the data matrix X * and any actual matrix Y of dimension n × p and rank r (necessarily, r ≤ min{n, p}) can be written as [22]  A matrix Y of rank r size n × p , is that matrix Y q of the same size and rank q < r , minimise the sum of squared (1) differences with the corresponding elements of Y .Lq = q × q diagonal matrix with the first q and diagonal ele- ments of L and Uq , Aq are presented by n × q and p × q matrices, by retaining columns U and A , which corre- sponds to q .A scatterplot of n points in an r-dimensional subspace is determined by the number of rows-n rows, rank r and column-centred data matrix X * [22] p. 3.
The PCA allows for translating government expenditure on education, social protection, education, health, and housing into new predictor variables known as principal components (PCs), while retaining as much precision as possible.

Ridge regression model
This section presents the ridge regression model.The ridge regression modelling (RRM) technique was utilised in analysing the relationship between MPI and government expenditure in housing, health, and social protection.The RRM technique is a statistical method used to analyse a single response variable with two or more multicollinear variables [46].This would likely be the case with the governance indicators, which are all related.
Ridge regression lowers conventional faults by adding a degree of bias to the regression estimates.Ridge regression estimations are based on standardised variables.Standardisation is done by subtracting the means of variables (both dependent and independent, and dividing by their standard deviations) [28,46].The ridge regression is drawn from the estimated ordinary least squares regression coefficients, shown as: The analysis assumes standardisation of variables; as such, X'X = R, where R is the correlation matrix of the independent variables.The estimates are unbiased and could relate to the population.
The RRM implicit model function is presented as follows: where Yt = MPI, β1 = Parameter estimate, X1 = Government Expenditure (Housing, Education, Health, and Social Security).

Results
This section presents the study's findings.First, the principal component analysis (PCA), a data reduction technique for multicollinear variables, is discussed, followed by a multiple linear regression analysis to infer the relationship between the study variables.

Principle component-analysis
This subsection presents the PCA findings, the diagnostic tests, and the results.

Diagnostic tests
Bartlett's test of sphericity was conducted to determine the suitability of the data for PCA analysis.Bartlett's test of sphericity compares an observed correlation matrix to the identity matrix.The test's null hypothesis is that the variables are orthogonal, i.e. not correlated, and is a prerequisite for factor analysis [48].Table 1 below presents Bartlett's test results.
The PCA results from Bartlett's test of sphericity indicate that the variables are correlated (29) = 112.50p < 0.001).This implies that the PCA analysis can be used.

Estimated PCA findings
This section presents the results obtained using PCA as a data reduction technique.The PCA method extracted three components with eigenvalues greater than 1.Eigenvalues are the coefficients linked to eigenvectors (principal components) sorted in descending order of their eigenvalues to determine the components' importance.The eigenvalues measure the covariance of the data [53].
The eigenvalues after varimax rotation retained four components with two components with a total variation of 97.51, as shown in Table 2.This implies that the The recommended threshold for meaningful interpretation of loadings on chosen components' analysis is 0.4 [47].Using this, Factor 2 successfully loaded on housing, health, and social protection (0.974, 0.453, and 0.086, respectively; see Table 3), and these variables were utilised in the ridge regression.

Ridge regression
This section presents the ridge regression findings based on the NCSS software.The first section presents the diagnostic tests, followed by the ridge regression findings in the second section.

Diagnostic tests
The diagnostic tests are significant at 5%.An F static of 4.953, and an R squared of 0.4977, show that model is robust.Table 4 shows the diagnostic tests.

Estimated ridge regression findings
Following Singh et al. [43], recommendations, principal components and ridge regression can improve the robustness of the model.Consequently, Anderson et al. [3] meta-analysis on education, social services, and health, against poverty lines, as a proxy for poverty.
In this study, the dependent variable MPI is regressed against the independent variables, housing, health, and social protection.
Table 5 shows the ridge regression findings.There is a negative relationship between housing expenditure and poverty.A 1-unit change in housing expenditure worsens the poverty status of households by 25%.
There is a positive relationship between health expenditure and poverty.A 1-unit change in health expenditure will cause a 38% reduction in poverty.
There is a negative relationship between social services expenditure and poverty.A 1-unit change in social services expenditure worsens poverty by 76%.
A VIF of 8 for social protection indicates a moderate correlation, while a VIF of 4 for housing, and 3 for health, indicate a low correlation with MPI.These conditions validate the use of ridge regression.

Discussion
This section discusses the results of the impact of government spending on poverty reduction in South Africa.The first section used a principal component analysis (PCA) to find the correct set of disaggregated government spending variables to put into the ridge regression model.The PCA extracted four components, with two components explaining 95% of the variance.Based on the interpretation of Tabachnick and Fidell [47] and the rotation criteria of Varimax, factor loadings were included in the ridge regression model: Housing, health, and social protection/ social security.
The findings are discussed in detail below, with references to the literature.
First, government expenditure on housing development, under the category of housing expenditure, showed a negative relationship with poverty.The findings contradict literature, which purports a positive contribution of housing and amenities expenditure towards poverty reduction.Permanent housing can relieve economic stress and reduce rates of domestic violence and alcohol dependence.For many people, having a place to call home means staying with their families and avoiding lifelong poverty [16].Nevertheless, the literature suggests poor households in developing countries do not receive government transfers and subsidies due to poor targeting [3].
In the South African context, the targeted housing development programmes, such are the Reconstruction Development Programme (RDP), provide beneficiaries with a fully built house that is free of charge by the Government.Department of Human Settlements [13], since 1994, the government has contributed R19 billion to just 1.5 million low-cost and free houses for people experiencing poverty, providing shelter, secure property, running water, sanitation, and electricity to over 6 million people [31].The contribution is minimal, citing an estimated 12 million South African households without proper housing, as slums, informal settlements, and inadequate housing remain the visible manifestations of poverty and inequality in cities [27].Corruption is pervasive within the government, where officials are not held responsible for their actions and decisions.This allows for unethical dealings with private companies, state funds, and asset embezzlement.Moreover, some employees' corrupt practices result in housing opportunities being allocated to unqualified individuals [27].
Second, health expenditure is positively related to poverty reduction.The magnitude is small, supporting the findings of [9].The results attest to the nature of public health funding, though non-exclusionary, but has been improper targeting of healthcare, with access limited on numerous grounds.These findings are supported by Pillai et al. [39], Abaeria et al. [1], Mukwena and Manyisa [29], and Nyashanu, Simbanegavi, and Gibson [33], who found that healthcare satisfaction is directly linked to healthcare facilities healthcare proximity, health care services (lack of personnel), overcrowding, lengthy waiting times, lack of medication, and infrastructure, which negatively impact health.Further highlights indicate that South Africa's health care system is viewed as highly unequal, reflecting poverty and lifestyle factors within different households [29].
Commensurate with the positive findings, government expenditure can help fight poverty by increasing the disposable income of low-income households and indirectly improving their nutrition, health, and education [2].Higher government health expenditures would suggest more health facilities, provision of necessary medical equipment, and higher standards of hospitals.Therefore, these facilities are likely to improve the health of the citizens [4].Healthcare expenditure can result in better provision of health opportunities, strengthening human capital and improving productivity, thereby contributing to economic performance.Therefore, investing carefully in various healthcare aspects would boost income, GDP, and productivity and alleviate poverty [40].
Finally, government expenditure on social protection is negatively related to poverty.As Andersen et al. posit the impact of spending on transfers and other "pro-poor" sectors varies among nations and relies on how effectively the spending reaches impoverished households.However, transfers and subsidies may also have unintended consequences, such as changes in household labour supply or private transfer receipts, which can negate their impact on poverty reduction.Therefore, even when appropriately targeted, the overall effect of transfers and subsidies on income poverty remains uncertain [8,3].These findings hold for South Africa, where the government earmarked billions for social security payments.It is now considered meagre as it falls below the upper-bound poverty income of about R1600 in an economy faced with high unemployment [27].
The social protection services sector is under the custodianship of SASSA in South Africa, which has recently been plagued by rampant corruption and service delivery issues.(SASSA) [44].Social insurance makes up 88% of the budget for the social protection services sector, with social assistance and services accounting for 8% and investments for 4%.Social security funds support older people, children, war veterans, disabled individuals, and children [13].

Conclusions
The study investigated the effect of fiscal policy, as proxied by government expenditure aggregates, on alleviating poverty in South Africa.A quantitative correlation design was used, which included principal component analysis (PCA) and ridge linear regression analysis, based on the Oxford, the multidimensional poverty index (MPI), and Statistics South Africa (government expenditure) time series annual data from 1995 to 2021.The retained components of the PCA explained around 97% of South African government spending variables as poverty drivers, retaining four factors (housing, social protection, and health), which entered the ridge regression model as independent variables.
The results of this study from the ridge regression showed a positive relationship between health expenditure and poverty.Consequently, a negative relationship between housing expenditure and social services spending to poverty.Justification for the findings was supported by literature and the South African economic conditions, including incidences of corruption and unemployment, which to a large extent, has implicated targeted government spending.
First, the findings emphasise the need for government involvement in social protection policies, as social assistance alone cannot alleviate multidimensional poverty.New or enlarged social assistance programmes may be introduced.Through an institutionalised social policy, NGOs, the media, political parties, and the public and commercial sectors may contribute to poverty reduction.Long-term ways to fight poverty are education, building people's skills, redistribution of land, economic growth and job creation, housing, water, sanitation, power, and schools and clinics.Independent, institutionalised, and comprehensive social policies are developed, implemented, monitored, and coordinated.All social and economic development concerns would be coordinated through social policy.

Implications of the research for practice
Efforts should be made to expand social protection programmes and ensure their effective implementation, with a particular focus on the most vulnerable populations.This includes providing financial support, social welfare services, and safety nets to assist individuals and families in overcoming poverty.
Co-production should be encouraged in health care and housing.In health, this will involve people who use health and care services, carers, and communities in equal partnership; and engages groups of people at the earliest stages of service design, development, and evaluation.A memorandum of understanding should frame dialogue between community and state actors and facilitate the co-production of housing and infrastructure in a low-income settlement.
Government subsidies and policies can help with the housing problem, including rental housing for lowerincome groups, bond subsidies for middle-income groups, and inclusionary housing policies.Through the Housing Development Agency, the government needs to engage the private sector, state-owned enterprises, provinces, and municipalities to unlock strategic parcels of land suitable for human settlements development, which provision, especially for low-income groups, should be at subsidised rates.
Improving healthcare infrastructure, increasing medical resource availability, and ensuring affordable healthcare for all are essential.Patients should not receive better treatment based on their ability to pay and access to medical schemes should not neglect public healthcare.The high remuneration of private care adversely affects public healthcare, with most doctors focusing on the private sector.These two markets are interconnected, and failure to reduce personal healthcare costs will lead to increased costs for everyone.Investing in mobile clinics and partnering with ambulatory surgical centres for low-acuity surgeries is necessary to enhance healthcare access.Investment in security should also be considered.

Limitations of the study
The paper focussed on four factors drawing from previous literature.Future studies might consider using other methodologies to capture the salient government expenditure factors with a poverty implication.More so, future studies could consider mixed methods, also exploring the views of deprived households.
p. 3: Equation (3) U , A represent matrices between n × r and p × r with orthonormal columns ( U ′ U = I r = A ′ A , where I r is the identity matrix; r × r ), and L is a diago- nal matrix r × r .The right singular vectors of Y are found in column A, and the eigenvectors p × p matrix Y ′ Y is linked to nonzero eigenvalues.Columns U will represent the left singular vectors of Y and the eigenvectors of n × n matrix Y Y ′ , , which is equivalent to the nonzero eigenval- ues.(The eigenvectors are the key components extracted from the correlation matrix calculated on standardised variables).

Table 5
Ridge Regression Source: Authors' NCSS iterations