The Optimal Monetary and Macroprudential Policies for the South African Economy

We investigate the optimal design and effectiveness of monetary and macroprudential policies in promoting macroeconomic (price) and financial stability for the South African economy. We develop a New Keynesian dynamic stochastic general equilibrium model featuring a housing market, a banking sector and the role of macroprudential and monetary policies. Based on the parameter estimates from the estimation, we conduct an optimal rule analysis and an efficient policy frontier analysis, and compare the dynamics of the model under different policy regimes. We find that a policy regime that combines a standard monetary policy rule and a macroprudential policy rule delivers a more stable economic system with price and financial stability. A policy regime that combines an augmented monetary policy (policy rate reacts to financial conditions) with macroprudential policy is better at attenuating the effects of financial shocks, but at a much higher cost of price instability. Our findings suggest that monetary policy should focus solely on its primary objective of price stability and let macroprudential policy facilitate financial stability on its own.     

Measuring the Carbon Intensity of the South African Economy

We estimate the carbon intensity of industries, products and households in South Africa using data from a high resolution supply‐use table. Direct and indirect carbon usage is measured using multiplier methods that capture inter‐industry linkages and multi‐product supply chains. Carbon intensity is found to be high for exports but low for major employing sectors. Middle‐income households are the most carbon‐intensive consumers. These results suggest that carbon pricing policies (without border tax adjustments) would adversely affect export earnings, but should not disproportionately hurt workers or poorer households. Seven percent of emissions arise through marketing margins, implying that carbon pricing should be accompanied by supporting public policies and investments.     

Capital Flows: The South African Experience

There has been a significant rise in the empirical work distinguishing between episodes of sharp slowdowns and surges in capital inflows. Much of this analysis has centred on gaining a better understanding of the cyclical behaviour of capital flows. This paper continues in this vein by identifying capital flow episodes for South Africa and analyses the nature and main drivers of cross‐border flows during these episodes. This paper makes two major contributions to the empirical work on South African capital flows. First, specific attention is given to some pertinent measurement issues in the identification of capital flow episodes for South Africa. The post capital account liberalisation period (post‐1995‐period) is delineated into a “normal” period (when capital inflows were close to historical averages) and an “abnormal” period (when capital inflows deviated significantly from the historical average). Second, the paper identifies some defining characteristics during these two periods. In this regard, the behaviour of domestic and foreign agents as drivers of capital flows and the probability of capital flow reversals across asset classes are given particular attention. Although these issues have significant policy implications, they have, to date, been given limited attention in the empirical work on South African capital flows.