Budget deficits and real interest rates: Updated empirical evidence on causality

Using error-correction model (ECM) estimation, the paper empirically examines the causality relationship between the federal government budget deficit and the ex ante real interest rate yield on high grade long term tax free municipal bonds in the U.S. To clarify this deficit or interest rate relationship, the budget deficit is measured by the primary budget deficit, which excludes net interest payments by the Treasury. In a model that includes federal personal income tax rates and net international capital flows, as well as money supply growth, the ECM estimates strongly suggest a bi-directional relationship between the primary budget deficit and the ex ante real interest rate yield. Budget deficits apparently do matter! William Simon's concerns were justified.The author is indebted to P. A. V. B. Swamy for ideas and helpful suggestions and Will Perry for data assembly and processing.     

The dynamic linkages between current account deficit and budget balance deficit in the South Asian region

The issue of twin imbalances is at the forefront of fiscal policy concerns in the South Asian region, fuelled by an ever-going budget deficit and current account deficit over the last five decades. A standard approach is to assume a model in which budget balance influences the current account. We relax this assumption by using a panel data vector autoregression model comprising five South Asian countries. The results show that both budget deficit and current account deficit are mutually causative, which contrasts the unidirectional causality running from fiscal deficit to current account deficit found in prior studies. Further, this bi-causality relationship is also demonstrated in the impulse response analyses. Budget balance in South Asian economies responds positively to a one standard deviation positive shock in the current account balance. Likewise, external balance increases to a one standard deviation positive shock in internal balance. Higher fiscal debt impedes economic growth, which in turn impacts negatively on the budget balance. Our findings lead us to reject 'fiscal policy only' recommendations to address the twin deficits.     

THE ROLE OF COMMODITY PRICES IN MACROECONOMIC POLICY IN SOUTH AFRICA

This paper examines whether commodity prices can be used as signal for informing macroeconomic policy in South Africa using the new approach for testing Granger causality developed by Toda and Yamamoto (1995 ). Evidence of causality from average gold price to interest rate, money, exchange rate and the consumer price index was observed. Again, evidence of causality was observed from metals price index to interest rate, money and exchange rate. The results suggest there is merit in using South Africa's average gold price and the metals price index of the International Monetary Fund as informational variables in setting monetary policy.     

Exchange Rate Policy and Currency Substitution: The Case of Africa's Emerging Economies

This paper examines the dynamic of currency substitution (CS) in Egypt and South Africa. The study also assesses the causal relationships of this phenomenon. There are three main CS‐related differences between the two countries. These are (1) the orientation of economic policy, (2) the degree and level of CS, and (3) the trend of CS. During the study period 1991‐2001, Egypt used the exchange rate as an anchor to its economic programme. While in the case of South Africa, the authorities directly targeted inflation. During this period, CS in Egypt started at a substantial level and experienced a steady decline. Conversely, CS in South Africa started at an insignificant level, but observed an uninterrupted increase. The results suggest that the elasticity of CS, with respect to exchange rate, of South Africa is 2.3 times that of Egypt, and that the speed of adjustment in South Africa is 5 times faster than in Egypt. Granger‐causality tests indicate a unidirectional relationship from the exchange rate to CS, in both Egypt and South Africa. The test for the interest rate differential and CS indicate that causality runs from the former to the latter in South Africa, but it runs in the opposite direction in Egypt. The study suggests that despite the cost of the exchange rate anchoring policy, it is more suitable to a high CS environment. Inflation targeting policy can be effective in achieving its objective as long as the CS is insignificant.     

THE RELATIONSHIP BETWEEN TOURISM AND TRADE IN SOUTH AFRICA

This article explores the relationship between tourist arrivals and trade in South Africa. Two analyses were conducted – a panel data analysis, which included tourism and trade data of 40 countries with South Africa, and a time‐series analysis that involved South Africa's main tourism and trade partners. Cointegration tests, Granger causality and Block exogeneity tests were used to investigate the nature of the relationship. The results of the panel data analysis show that for South Africa as a whole, there is indeed a long‐term relationship between tourist arrivals and trade, and that bidirectional causality exists. The results for the country case studies are mixed, although the evidence is stronger for the hypothesis that tourism causes trade.     

Have large budget deficits caused increasing trade deficits? Evidence from a developing country

This paper investigates the relationship between budget and trade deficits on the basis of previous empirical work. Within the framework of cointegration analysis, error-correction modeling and Granger causality, the paper evaluates the validity of the Keynesian proposition (conventional view) and the Ricardian equivalence hypothesis. The error-correction modeling approach supports the Keynesian proposition in the short and long run. The empirical evidence reveals one-way causality from budget deficit to trade deficit.     

Government budget deficits,nominal andex ante real long-term interest rates in the U.K., 1960:1–1990:2

This paper explores the impact of government budget deficits on the U.K. nominal and ex ante real long-term interest rates over the period from 1960:1 to 1990:2 utilizing an open and closed economy IS-LM model. An open economy IS-LM model indicates that nominal and ex ante real long-term interest rates are affected by the expected rate of inflation, the real money stock, the real government budget deficit, the real government spending, and the real balance of trade.The evidence presented suggests that increases in the U.K. budget deficits do contribute significantly to increases in nominal and ex ante real long-term interest rates. This implies that rising nominal and ex ante real long-term interest rates, as a result of high government budget deficits, would crowd out private investment and deter capital formation and long-term economic growth.     

The impact of net international capital inflows on nominal long-term interest rates in France

Previous research on the impact of net international capital inflows on domestic interest rates has been almost exclusively founded in regression analysis and has yielded mixed results. Some studies find that net capital inflows reduce domestic interest rates, whereas others find no such impact. The present study, which applies cointegration techniques to quarterly data over the 1973–93 period, finds that such capital inflows to a major industrialized nation, France, may not only reduce longer term interest rates in that nation but may also offset a large portion of the longer term interest rate impact of that nation's central government budget deficit. The author expresses his appreciation for helpful referee comments that improved the paper.     

SHOULD SOUTH AFRICA HAVE A FISCAL RULE?

Over the past three decades many countries have struggled to find solutions to their persistent public sector deficits. For some the solution to this problem seemingly became the adoption of fiscal rules. This paper considers the applicability of one such rule, namely the output‐sensitive deficit rule of Taylor, and in particular its applicability to South Africa. The paper shows that its applicability in developing countries such as South Africa might be limited due to higher output volatility that may cause output‐sensitive deficit rules such as the Taylor rule to become more volatile. Such volatility in the deficit/GDP ratio may cause fears that government may not be able to maintain the stability of the debt/GDP ratio, thereby again introducing fiscal unsustainability. To address this problem the paper augments the Taylor rule to reduce the volatility in the public debt/GDP ratio and demonstrates how these rules would have performed in South Africa. It concludes that the augmented fiscal rule might contribute to both fiscal sustainability and economic stability in South Africa.     

WAGNER'S LAW REVISITED: A NOTE FROM SOUTH AFRICA

The aim of this note is to reassess the validity of Wagner's law for South Africa for the period 1950‐2007 using cointegration and causality tests. The evidence shows causality running from income to government expenditure, thus supporting the Wagnerian proposition of an expanding public sector. Using five different long‐run estimators, we found that the size of South Africa's public sector was positively and significantly related to South Africa's national income. The elasticity ranges from 1.12 to 1.57, implying that a 1% increase in income leads to a 1.12‐1.57% increase in government expenditure.     

WAGNER'S LAW: AN ECONOMETRIC TEST FOR SOUTH AFRICA, 1960‐2006

The main objective for this paper is to test Wagner's law by analysing the causal relationships between real government expenditure and real income for South Africa for the period 1960‐2006. The paper tests the long‐run relationship between the two variables using the autoregressive distributive lag approach to cointegration suggested by Pesaran et al. We use the Granger non‐causality test procedure developed by Toda and Yamamoto, which uses a vector autoregression model to test for the causal link between the two. Evidence of cointegration is sufficient to establish a long‐run relationship between government expenditure and income. However, support for Wagner's law would require unidirectional causality from income to government expenditure. Therefore, cointegration should be seen as a necessary condition for Wagner's law, but not sufficient. This research does find a long‐run relationship between real per capita government expenditure and real per capita income. Results for the short‐run causality find bidirectional causality. On the basis of empirical results in this paper, one may tentatively conclude that Wagner's law finds no support in South Africa.     

Financial-market effects of Federal Government budget deficits

Conclusion This paper finds that, for the 30-year period 1955–1984, the federal government budget deficit in the United States had a positive and significant effect on the longer-term nominal interest rate. This finding is at odds with most of the existing literature, which finds federal budget deficits to have no measurable impact upon interest rates in the United States [cf. Evans, 1985; 1987; Hoelscher, 1983; Makin, 1983; Motley, 1983; McMillin, 1986; and Mascaro and Meltzer, 1983]. The difference between the findings here and the findings in these other studies can be traced at least in part to the way in which we specify the deficit variable. That is, we distinguish between thestructural deficit, which approximates theexogenous component of the total deficit, and thecyclical deficit, which represents theendogenous component of the total deficit. By contrast, these other related studies measure the deficit in more aggregated ways, which combine the cyclical deficit with the structural deficit into one variable.     

ESTIMATING MONETARY POLICY RULES FOR SOUTH AFRICA

The paper combines the estimation of the Monetary Conditions Index (MCI) with the theoretic modelling of optimal monetary policy in South Africa. The idea that monetary policy is not only interested in optimal monetary conditions but also in external stability, provides the basis for the analysis. The paper introduces the concept of the MCI and estimates the relative influence of interest rates and exchange rates on the output gap. The estimated weights are 1.9:1. This estimation results is used to specify operating target rules for South African monetary policy.     

INFLATION TARGETING AND THE FISHER EFFECT IN SOUTH AFRICA: AN EMPIRICAL INVESTIGATION

The paper analyses the relationship between expected inflation and nominal interest rates during a period of inflation targeting in South Africa, i.e. from 2000 to 2005. Specifically, it investigates the Fisher hypothesis that nominal interest rates move one‐to‐one with expected inflation, leaving the real interest rate unaffected. The analysis distinguishes between a short‐run Fisher effect and a long‐run Fisher effect. Using cointegration and error correction models (for monthly data for the period April 2000 to July 2005), it was found that the short‐run Fisher hypothesis did not hold during the relevant period under the inflation targeting monetary policy framework in South Africa. This is attributed to a combination of the South African Reserve Bank's (SARB) control over short‐term interest rates and the effects of the monetary transmission mechanism. The long‐run Fisher hypothesis could not be confirmed in its strictest form: while changes in inflation expectations move in the same direction as the nominal long‐term interest rate. This suggests that monetary policy has an influence on the real long‐term interest rate, which has positive implications for general economic activity, thus confirming the credibility of the inflation targeting framework.     

AN ANALYSIS OF INVENTORY INVESTMENT IN SOUTH AFRICA

This paper describes the evolution of inventory investment in South Africa over the past two decades, and identifies the factors influencing inventory investment over this period. An econometric model of inventory investment in South Africa, based on the production smoothing approach, is constructed. The results of the model indicate that actual sales, production, unfilled orders, price levels, interest rates and expected sales have an influence on the evolution of inventory investment. These variables are directly or indirectly influenced by macroeconomic policy decisions and through their influence on inventory investment they also influence changes in gross domestic product. Therefore, prior information on the factors that influence inventory investment contributes to explaining changes in gross domestic product and may help to prepare more accurate short‐term forecasts of overall economic activity.     

Supply‐leading versus Demand‐following Hypothesis: Empirical Evidence from Three SSA Countries

Abstract: This study investigates empirically the direction of causality between financial development and economic growth in three sub‐Saharan African countries — Kenya, South Africa and Tanzania. The study seeks to answer one critical question: Does financial development in sub‐Saharan African countries exhibit a supply‐leading or demand‐following response? Using three proxies of financial development against real GDP per capita (a proxy for economic growth), the study finds that the direction of causality between financial development and economic growth is sensitive to the choice of measurement for financial development. In addition, the strength and clarity of the causality evidence is found to vary from country to country and over time. On balance, a demand‐following response is found to be stronger in Kenya and South Africa, whilst in Tanzania a supply‐leading response is found to be dominant. The study therefore recommends that for Kenya and South Africa the real sector of the economy should be developed further in order to sustain the development of the financial sector. However, for Tanzania, there is need for further development of the financial sector in order to make the economy more monetized.     

Global Risk Factors and South African Equity Indices

South African equity is frequently portrayed as a market requiring a high degree of local expertise – to appropriately understand its many idiosyncratic features – as well as intimate knowledge of its unique drivers – to prudently invest in the same. This claim is evidenced by the amount of research and effort devoted to understanding South African‐specific economics, interest rates and risks. The aim of this research is to debunk this perception with a simple yet robust and highly replicable statistical model (best‐subsets regression) for the majority of the traded South African equity indices. We show how the South African equity market is mostly a one‐way mirror of a confluence of international factors, all arguable largely unrelated to South Africa. We discuss why these models are currently less useful than their longer‐term predictive averages and note the current relevance of including implied volatility and interest rates as predictors.     

The relationship between financial sector development and savings mobilisation in South Africa: An empirical study

This article examines the link between financial sector development and savings mobilisation in South Africa for the period 1980–2012. Taking the life-cycle hypothesis as our theoretical background and using Johansen co-integration that allows for hypothesis testing, the empirical results revealed a long-run relationship between savings, interest rates and financial sector development. We find an inverse relationship between the interest rate and savings, implying that South Africans are net borrowers because the income effect overwhelms the substitution effect. This in part explains the low level of savings in recent time. Important policy lessons for boosting the national savings rate are discussed.     

FINANCIAL AND MONETARY AUTONOMY AND INTERDEPENDENCE BETWEEN SOUTH AFRICA AND THE OTHER SACU COUNTRIES

The paper uses cointegration and error correction modelling techniques together with tests of weak exogeneity, and monthly interest rates for the period 1990 to 2005, to examine the degree of financial and monetary autonomy and interdependence between South Africa and the other Southern African Customs, Union (SACU) countries. The results reveal a high level of dependence of the other SACU countries' financial systems on South Africa's financial system, which suggests that a monetary unification with a single central bank (South African Reserve Bank) and monetary policy for the union is feasible.     

Spillovers of the Conventional and Unconventional Monetary Policy from the US to South Africa

This paper assesses the effect of US monetary policy on South Africa during the period 1990–2018. We separately analyse and compare the effect of conventional monetary policy, before the Global Financial Crisis, and unconventional monetary policy, after the US monetary policy reached the zero-lower bound. Our impulse response function results indicate that monetary policy in South Africa responds mainly to local inflation, economic activity and financial conditions. While there is strong correlation between the global and South African financial cycle, the financial cycle is not transmitted to the real economy because of the sluggish response of industrial production and domestic credit, especially after the global financial crisis. We see this as an indication of the effects of structural issues to the real economy and constrained households’ balance sheet which has prevented the local economy to take advantage of low local interest rates and the global economic recovery after the crisis.