Monetary Economics
Monetary economics is the branch of economics that studies the role of money in the economy, including the money supply, interest rates, inflation, and the conduct of monetary policy. It examines how the supply and demand for money interact with the rest of the economy, and how central banks influence economic activity.[1]
Subject matter
Monetary economics addresses several central questions:
- What is the nature and function of money?
- How does the money supply affect prices, output, and employment?
- How do interest rates transmit monetary policy to the real economy?
- What is the optimal design and conduct of monetary policy?
- How do banks and financial institutions create money?
Key concepts
| Concept | Description |
|---|---|
| Money supply | The total amount of money in circulation in an economy. |
| Monetary base | Currency in circulation plus reserves held by banks at the central bank. |
| Quantity theory of money | The proposition that changes in the money supply are the primary cause of price changes. |
| Inflation | A sustained increase in the general price level. |
| Interest rate | The cost of borrowing money, a key channel of monetary policy. |
Theoretical perspectives
Monetary economics encompasses a range of theoretical traditions, including the quantity theory, monetarism, Keynesian economics, and new Keynesian economics. These differ in their assessment of the relative importance of money, the neutrality of monetary changes, and the scope for activist monetary policy.[1]