This article argues the case for a policy of "anchored flexibility" in the form of a flexible fiscal rule that allows for the pursuit of economic stability but always anchors that pursuit in fiscal sustainability. The rule is explicitly structured to be simple and is designed in analogy to the inflation-targeting framework. The article heeds the warning that consistently forecasting the output gap with any degree of precision is quite difficult, if not impossible, and thus proposes a target band for the deficit, instead of point targets for the overall deficit and the structural budget balance. To ensure fiscal sustainability over and above the contribution of the deficit rule, the article also proposes a band for the debt/GDP ratio. This debt rule acts as a negative feedback rule that stipulates the adjustments required in the deficit, should the actual debt/GDP ratio move outside the stipulated band. Since the government needs to change revenue and expenditure in order to change the deficit, the article then explores empirically whether and with how much revenue and expenditure in South Africa changed to maintain fiscal sustainability. More specifically the article explores various models of the fiscal reaction function to illuminate government behaviour in South Africa. These models consider how the deficit, expenditure and different types of revenue reacted to the debt/GDP ratio and the output gap to ensure fiscal sustainability. Lastly, the article considers measures that could enhance the automatic stabilisers, while simultaneously allowing for the maintenance of fiscal sustainability in the medium term.

Is there a Phillips curve relationship present in South Africa and if so, what form does it take? Traditionally the method to establish whether or not there is a relationship between the output gap and the change in inflation is merely to regress the latter on the former. This yields the well-known augmented Phillips curve. However, Gordon has argued that this specification of the Phillips curve produces biased results. Instead, he puts forward and estimates successfully for several industrialised countries his so-called triangular model that tests for hysteresis and inertia in the behaviour of inflation, as well as the impact on inflation of changes in the output level. This paper considers whether or not Gordon's triangle model is applicable to South Africa, i.e. are hysteresis and inertia present in South Africa? In addition, in an attempt to find a better estimation of the output gap, the paper also experiments with alternative ways to estimate the long-run output level, including the standard HP-filter, as well as a production function approach. Copyright (c) 2006 The Authors. Journal compilation (c) 2006 Economic Society of South Africa.

Following years of fast‐rising debt levels, we show that the Covid‐19 crisis worsened an already deteriorating fiscal position in South Africa. To restore fiscal sustainability in the aftermath of the crisis some commentators argue that higher government expenditure will grow GDP sufficiently to stabilise the debt/GDP ratio. We reject this, showing that although a real increase in expenditure stimulates economic growth (a short‐run, once‐off effect), the public expenditure/GDP ratio exceeds the level at which an increase in the ratio positively impacts growth. We then explore the past efforts of government to maintain or restore fiscal sustainability by estimating a fiscal reaction function using a Markov‐switching model. Following the impact of the Covid‐19 crisis on the budget, we subsequently establish the deficit, expenditure and revenue adjustments that the government will have to make to restore fiscal sustainability. Finally, we consider the merits of introducing a debt ceiling.

How does the South African government react to changes in its debt position? In investigating this question, this paper estimates fiscal reaction functions using various methods (ordinary least squares, threshold autoregressive, state‐space modelling and vector error‐correction model). This paper finds that since 1946, the South African government has run sustainable fiscal policy by reducing the primary deficit or increasing the surplus in response to rising debt. Looking ahead, this paper considers the use of fiscal reaction functions to forecast the debt/gross domestic product (GDP) ratio and gauging the likelihood of achieving policy goals with the aid of probabilistic simulations and fan charts.

The question this paper investigates is whether or not different metropolitan areas each constitute a separate housing market or whether or not there is a single South African housing market. Theory on the Law of One Price suggests that if products or geographic areas belong in the same market, their absolute prices must converge, so that their relative prices are stationary. By using cross-sectional time series data of five metropolitan areas, the paper tests for the Law of One Price by applying the Im, Pesaran and Shin panel unit root test. The paper finds strong evidence of convergence in large middle-segment house prices and weaker support for convergence in medium middle-segment house prices. In addition, the paper finds no evidence for convergence in small middle-segment house prices. This suggests the existence of a national market for large and possibly middle-segment houses in metropolitan areas, but separate metropolitan markets for small middle-segment houses. In addition, the paper estimates the speed of convergence and finds that large middle-segment house prices converge within two to seven quarters, while the speed of convergence for medium middle-segment house prices in three of the five areas is five to eight quarters. Copyright (c) 2008 The Authors. Journal compilation (c) 2008 Economic Society of South Africa.