Distinguish between capital controls and free capital mobility; how do each affect a country's macro policy autonomy?

• A. Capital controls remove monetary autonomy
• B. Capital controls restrict flows, allowing more monetary autonomy
• C. Free mobility increases monetary policy autonomy
• D. Capital controls have no effect on efficiency

Answer: (B)

Capital controls limit how much money can move across borders, which reduces the external pressures on a country’s exchange rate and interest-rate decisions. When flows are restricted, the central bank can set domestic interest rates and use monetary policy to respond to domestic conditions with less risk that sudden inflows or outflows force destabilizing currency moves. That gives a country more room to pursue its own monetary stance, especially if it wants to maintain a particular exchange-rate regime or smooth the business cycle without being pulled by capital movements. By contrast, free capital mobility means capital can move freely, which often limits monetary policy independence under a fixed exchange rate (you’d have to adjust policy to defend the rate) and only allows autonomy to a degree if the exchange rate is flexible. So capital controls preserving some flow restrictions do indeed provide more monetary autonomy.