Inflation Above the Band with a Pegged Currency
Inflation is 6.9%, above the 3-6% target band. Food and fuel make up 40% of the CPI basket, and their import prices rose 14% in the past year. The currency is pegged one-for-one to the rand. The repo rate is 7.25% and the prime lending rate 11.5%. Private sector credit grew 12.4% over the year, GDP grew 2.8%, and unemployment is 33%, with youth unemployment near 46%. The government deficit is 5.8% of GDP and public debt is 68% of GDP. Reserves cover four months of imports. The central bank's mandate is price stability. The finance minister argues that a rate rise will kill the recovery, and a union demands a 9% wage increase to restore real wages. The monetary policy committee must decide whether to raise the repo rate by 25, 50 or 100 basis points.
1. Explain the channels through which a rise in the repo rate is expected to reduce inflation, and assess how the peg limits the central bank.
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The real repo rate is 7.25 - 6.9 = 0.35%, which is very low; raising the repo rate to 8.25% would give a real rate of 1.35%.
Channels: (1) Credit: a higher repo raises the prime rate above 11.5%, increasing loan repayments and reducing credit growth from 12.4%, curbing spending on durables and investment. (2) Asset prices: higher discount rates lower house and share prices, reducing wealth and collateral, so consumption and lending fall. (3) Exchange rate: higher rates attract capital inflows and tend to appreciate the currency, reducing import prices; this is the most direct route to lower food and fuel prices. (4) Expectations: a credible hike signals that inflation will be brought back to the band, moderating the 9% wage demand and reducing second-round effects. (5) Cash flow: borrowers with variable-rate debt cut spending.
The peg constrains all of this. If the central bank raises rates well above those in the anchor currency, arbitrage inflows put upward pressure on the currency, which the bank must resist by buying foreign exchange. That increases reserves but also domestic liquidity, partially offsetting the tightening unless sterilised. If the anchor central bank is cutting, the peg forces the domestic rate down, importing looser policy. If markets doubt the peg, the bank may spend its four months of reserves defending it. This is the impossible trinity: a fixed exchange rate, free capital movement and independent monetary policy cannot all be maintained. The bank's room for manoeuvre is therefore modest.
2. Discuss the conflict between tightening monetary policy and the government's growth and employment objectives.
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Higher rates reduce aggregate demand and investment, so GDP growth of 2.8% may slow and unemployment of 33%, already very high, may rise. The short-run Phillips curve implies a trade-off: lower inflation is bought with higher unemployment. If the sacrifice ratio is two, reducing inflation from 6.9% to 6% might cost about 1.8% of GDP, with significant job losses in construction and retail.
Much of the inflation is a supply shock. Food and fuel are 40% of the basket and import prices rose 14%, contributing roughly 0.4 x 14 = 5.6 percentage points to inflation. Monetary policy cannot reduce world fuel prices; it works by reducing domestic demand, so the inflation fall is achieved mainly through lower output, which is costly and slow.
There is also a distributional conflict. Raising rates helps savers and hurts borrowers, small firms and mortgage holders. The union's 9% claim is a response to falling real wages; if granted, it risks a wage-price spiral that makes inflation persistent and forces an even larger tightening later.
Judgement: ignoring the shock risks de-anchoring expectations and losing credibility, which would ultimately be more costly. But a large hike into a 33% unemployment economy risks a deep contraction. A modest 25-50 basis point rise, clearly explained as protecting the inflation target rather than fighting the imported shock, plus fiscal measures to cushion food and fuel costs for the poorest, balances the objectives better than a 100 basis point rise.
3. Evaluate whether fiscal consolidation or supply-side policy would be a better complement to monetary policy.
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Fiscal policy affects demand directly. With a deficit of 5.8% of GDP and debt at 68%, consolidation reduces aggregate demand and import spending, easing inflation and the external position, and lowers the risk premium. But tax rises or spending cuts may fall on capital projects and social programmes, reducing long-run growth, and may be politically difficult with unemployment at 33%. Well-targeted consolidation, such as cutting untargeted fuel subsidies and raising revenue from consumption rather than income, is less damaging than across-the-board cuts.
Supply-side policy works on the cost and capacity side. Measures to raise agricultural productivity, improve transport and electricity reliability, and reduce port delays lower unit costs and ease cost-push inflation without suppressing demand. These take years to work and require funding, so they are complements rather than substitutes for short-run policy.
Judgement: the best package is sequenced. A modest rate rise protects credibility; fiscal consolidation should be gradual and protect capital and social spending; supply-side reform should be accelerated to relax the constraints that make inflation persistent. Relying on monetary policy alone would put too much of the adjustment on a narrow interest-rate channel, while fiscal tightening alone might be slower and more politically contentious.