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Set out what central banks do and the goals they pursue

CFA® Level I · Economics · Monetary Policy · EC.7.a

The idea

Central banks issue currency, act as banker to the government and to the banking system, supervise payment systems, and in most cases regulate banks. Their defining modern role is the conduct of monetary policy, usually around an explicit inflation target, sometimes alongside an employment objective. Independence from the government of the day is what makes a target credible: a central bank that can be instructed to cut rates before an election cannot anchor expectations. Credibility is the real asset, because expectations of future inflation feed into wages and prices set today.

A practice question

From the question bank, with the reason each wrong option is wrong.

What is the most common primary objective of a modern central bank?

  1. Maximising government revenueWhy not: That would put the bank at the service of the treasury, which is what independence is designed to prevent.
  2. Price stability, often via an inflation target — correct
  3. Maintaining a fixed exchange rateWhy not: A real objective under some regimes, but it is the alternative to an inflation target rather than the common case.

Most central banks target low, stable inflation, sometimes alongside an employment mandate. A fixed exchange rate is a regime choice rather than a universal objective.

A harder one

Why does central bank independence matter for inflation control?

  1. It allows the bank to set fiscal policy as wellWhy not: Independence separates the two; it does not hand the bank the budget.
  2. It removes the need for an inflation targetWhy not: Independence is what makes a target credible, so it strengthens the case for having one.
  3. It makes the commitment to the target credible, which anchors expectations — correct

If policy can be overridden for political convenience, no promise about future inflation is believable. Expectations then drift, and they feed directly into today's wage and price setting.

The hardest tier

Why are inflation expectations themselves a target of central bank communication?

  1. Because wages and prices set today embed what people expect tomorrow — correct
  2. Because expectations are included in the price indexWhy not: The index measures prices actually paid. Expectations act on it through the decisions people make, not as a component.
  3. Because expectations determine the exchange rate regimeWhy not: The regime is a policy choice. Expectations influence the rate within it, not the choice of it.

Inflation is partly self-fulfilling: wage demands and pricing decisions are made on expected future inflation. Anchoring expectations therefore does much of the work before any rate change takes effect.

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