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Explainer: Singapore's unique monetary policy mechanism

Created at 27 Jul · 12:19 AM1 source↑ Market-relevant
IN SHORT

Singapore's central bank, MAS, unexpectedly tightened monetary policy by adjusting the exchange rate of the Singapore dollar against its trading partners. This method is used due to the nation's trade-reliant economy, where exchange rates significantly influence inflation.

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Key Numbers

three timesgross exports and imports relative to GDP

Who's Involved

Monetary Authority of Singapore (MAS)
Singapore's central bank managing monetary policy
Xinghui Kok
Reuters reporter

↳ Why This Matters

Singapore's unique monetary policy, focused on exchange rates rather than interest rates, highlights how small, open economies can manage inflation through currency management, offering a different approach to global monetary policy challenges.

Key facts

  • Singapore's central bank, MAS, unexpectedly tightened monetary policy.
  • MAS manages monetary policy by adjusting the exchange rate of the Singapore dollar nominal effective exchange rate (S$NEER) against its trading partners' currencies.
  • This method is used due to Singapore's high reliance on trade, where exchange rates significantly impact inflation.
  • The S$NEER policy band has three adjustable parameters: slope, level, and width.
  • MAS now announces policy quarterly, a shift from its previous twice-yearly schedule.

Singapore's central bank, the Monetary Authority of Singapore (MAS), unexpectedly tightened its monetary policy settings, citing projections for rising inflation in the coming months. Unlike many economies that adjust domestic interest rates, Singapore employs a unique strategy by managing the exchange rate of its currency, the Singapore dollar nominal effective exchange rate (S$NEER).

This approach is particularly suited to Singapore's small, trade-reliant economy, where imports constitute a significant portion of domestic spending. An appreciation of the Singapore dollar against its major trading partners' currencies directly reduces the cost of imported goods and services, thereby dampening domestic inflation. The S$NEER is a trade-weighted index that reflects the Singapore dollar's performance against the currencies of its key trading partners, which MAS believes is crucial for general price levels.

The MAS allows the S$NEER to fluctuate within an undisclosed policy band. The central bank intervenes by buying or selling Singapore dollars if the exchange rate moves outside this band. The policy band itself is defined by three adjustable parameters: the slope, which influences the pace of currency appreciation or depreciation; the level, or mid-point, used for immediate currency adjustments in severe economic situations like recessions; and the width, which determines the allowable volatility of the S$NEER.

Previously reviewed at least twice a year, typically in April and October, MAS began announcing monetary policy assessments quarterly from 2024. This change aims to provide more timely assessments of the economic outlook.

Frequently asked questions

Singapore's central bank, MAS, manages monetary policy by adjusting the exchange rate of the Singapore dollar nominal effective exchange rate (S$NEER) against its trading partners' currencies, rather than changing domestic interest rates.

Singapore is a small, trade-reliant economy where the exchange rate has a greater influence on inflation than domestic interest rates, as it directly affects the prices of imported goods and services.

The S$NEER is a trade-weighted index of the Singapore dollar against major trading partners' currencies. MAS allows it to move within an undisclosed policy band, intervening if it moves outside.

The three levers are the slope (influencing the pace of currency change), the level (for immediate adjustments), and the width (allowing for more volatility).

What Happens Next

01MAS will continue to provide monetary policy assessments quarterly.

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How It Developed

Singapore's central bank unexpectedly tightened monetary policy.
Inflation is projected to increase in the coming months.
The Monetary Authority of Singapore (MAS) manages policy by adjusting the exchange rate of the Singapore dollar (S$NEER) against its trading partners' currencies.
This approach is chosen because Singapore is a small, trade-reliant economy where exchange rates have a greater impact on inflation than domestic interest rates.
The S$NEER is a trade-weighted index of the Singapore dollar against major trading partners' currencies.
MAS allows the S$NEER to fluctuate within an undisclosed policy band, intervening if it moves outside the band.
The policy band has three adjustable parameters: slope, level, and width.
Adjusting the slope influences the pace of currency strengthening or weakening.

Sources

T1
Explainer-How Singapore's unique monetary policy worksReuters

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