Wize AP Macroeconomics Textbook > Monetary Policy
Monetary Policy, Open Market Operations and Overnight Rate

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Monetary Policy, Open Market Operations and Overnight Rate
Monetary policy is the setting of the money supply and interest rates by the central bank.
- In a recession (or recessionary gap), the central bank should useexpansionarymonetary policy which meansincreasethe money supply anddecreasethe interest rate so that it ischeaperto take loans and spending increases.
- In an economic boom (inflationary gap), the central bank should usecontractionarymonetary policy which meansdecreasethe money supply andincreasethe interest rate so it is more expensive to take loans and spending decreases.
Open Market Operations
Open-market operations are the purchase or sale of government bonds (securities/Treasuries) by the central bank.
- Open Market Purchase - this is when the central bank purchases government bonds (Treasuries) from the public. It would cause money supply toincreaseand interest rate todecrease. It is normally used in arecession (recessionary gap).
- Open Market Sale - this is when the central bank sells government bonds (Treasuries) to the public. It would cause money supply todecreaseand interest rate toincrease. It is normally used in aboom (inflationary gap).
Other Central Bank Tools
- Quantitative easing - a purchase by the central bank of government or non-government securities (like bonds) with long maturity terms. It causes the money supply toincrease
- Foreign Exchange Market Operations - the purchase or sale of foreign money by the central bank. Example: If the Canadian central bank buys 100 million Euros in the foreign exchange market in exchange for 130 million Canadian dollars it means the Canadian money supply willincrease. If the central bank sells Euros in the foreign exchange market it means the Canadian money supply willdecrease.
- Sterilization - the process of offsetting foreign exchange market operations with open-market operations, so that the effect on the money supply is cancelled out. Example: If the Canadian central bank sells 100 million Euros in the foreign exchange market in exchange for 130 million dollars and does not want the Canadian money supply to decrease, it could conduct an open marketpurchase.
- Reserve Requirements - regulations on the minimum amount of reserves that commercial banks must hold against deposits (not commonly used). Example: In a recession the central bank canlowerthe reserve requirements the commercial banks have to keep so that they can loan outmore.
Overnight Rate
- Overnight Rate - the interest rate on very short-term loans between commercial banks. In a recession the central bank woulddecreasethe overnight rate.
- Bank Rate (Discount Rate) - the interest rate charged by the central bank on loans to the commercial banks (also called discount loans). In a recession the central bank wouldlowerthe bank rate.
- Deposit Rate - the interest rate the central bank gives commercial banks on their deposits at the central bank.
- Operating Band - this is the gap between the overnight rate, bank rate and deposit rate. In most countries it is around +/- 0.25% Example: If the deposit rate is 0.5%, then the overnight rate is0.75%and the bank rate is1%