Measuring potential output for the South African economy: Embedding information about the financial cycle
Stellenbosch Working Paper Series No. WP03/2014Publication date: 2014
Author(s):
In a recent paper, Borio et al (2013a) show that information embedded in the financial cycle can serve to improve measures of potential output and output gaps. It is argued that output may be on an unsustainable path despite low and stable inflation if financial imbalances are accumulating. Borio et al (2013a) show that incorporating information on the financial cycle yields measures of potential output and output gaps for the US, UK and Spain that are estimated more precisely and are more robust in real time. With its well-developed financial markets and relatively open capital markets, the South African economy is potentially susceptible to the build-up of the sort of financial imbalances that characterised the recent financial crisis. However, existing measures of the output gap for South Africa do not generally incorporate information on the financial cycle. Using the framework developed in Borio et al (2013a), a finance-neutral measure of the output gap is estimated for South Africa. The traditional HP-filter is extended to incorporate information on credit and property prices. Including financial cycle proxies result in output gaps that are estimated more precisely and are more robust to data revisions and the arrival of new data points (i.e. estimated output gaps are more robust in real time), while also reflecting the impact of financial variables on economic activity. As such, the estimated finance-neutral output gap seems to represent a more appropriate measure on which to base monetary policy decisions than the traditional inflation-neutral measures prevalent in the literature.
JEL Classification:E10, E40, E44, E47, E52
Keywords:Potential output, output gap, financial cycle, monetary policy
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Monday 28 July 202512:00-13:00
Dr Neil Rankin: Ceo Of Predictive Insights & Stellenbosch University
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Prof Willem Boshoff: Stellenbosch University
Topic: "Two competing approaches in South African competition policy: merger control and anti-cartel enforcement over the past 30 years"
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Professor Johan Fourie: Stellenbosch University
Topic: "Economic History: TBC"
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18 Jul 2025 Encouraging data, but messy politics while US tariff deadline loomsThe big global data prints of the week came on Tuesday, with better-than-expected Chinese GDP growth for Q2 and US core CPI coming in lower than expected, but still (finally) reflecting some signs of tariffs being passed on to consumers. Locally, the uptick in mining production and retail sales was positive for Q2 GDP dynamics. In addition to the data,...
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