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5.5.1 Interest rates, supply and demand and market efficiency

Money is a commodity. Some people/organizations buy it and others sell it. As a very simple example we 'buy' the use of money when we take out a mortgage for a house (we commonly call this borrowing), and 'sell' when we have savings that generate interest (we call this lending). Like any commodity money has a price determined by the intersection of its demand and supply curves (as shown on a graph). Interest rates represent the price of borrowed or loaned funds.

As interest rates fall, demand for loans increases until demand exceeds supply, at which point interest rates will rise until a point is reached where demand for money decreases. The next reading discusses the elements that affect interest rates.

Reading 2

De Lucia, R.D., & Peters, J., 1998. 'Factors affecting interest rates'. In Commercial Bank Management . 4th edition. LBC Information Services, Sydney . Pages 94-102.

Reasons for different interest rates

Interest rates differ for a number of reasons apart from demand and supply. Some of these are:

Risk

Higher risk borrowers generally pay higher rates on their borrowings to compensate lenders for the risks associated with the loan.

 

Profits on re-lending

Financial institutions make their profit on the interest differential between borrowing and lending.

 

Size of loan

Deposits above a certain amount with a financial institution may attract a higher interest than smaller deposits.

 

Duration of loan

Long-term loans usually earn a higher interest rate than short-term loans

 

Nominal and real rates of interest

Nominal Interest rates are the actual rates charged or payable on securities and real rates are the nominal rates less the inflation rate. The real rate measures the increase in real wealth measured in terms of the purchasing power of the investor or lender. An example is:

Nominal rate 10%

- inflation rate 3%

= Real rate of interest 7%

Interest rates are determined by the risk free rate of interest plus a risk premium. Government securities, for example, are deemed as risk free and as a result the interest rates paid on them are also deemed to be risk free.

All ot her borrowings carry higher interest rates that include a risk prem ium. The risk premium is applied because of:

Efficiency of markets

The capital market is an intermediary between investors and borrowers and its efficiency is measured by how well it satisfies both investors and borrowers.

Companies use a number of financial instruments (pieces of paper!), such as shares, debentures and convertible notes to raise funds. These funds are used for potentially profitable projects and activities that would be abandoned if the funds are not found.

The combination of appropriate markets and a wide range of financial instruments allow surplus funds to be allocated efficiently.

The idea of an 'efficient market' implies that the market prices for all the securities marketed or traded reflect all available information and so the market is able to determine the price of financial assets (shares and securities) quickly and fairly. It also means that no single individual or company can dominate the market and that the cost of trading in financial securities is not too high. If these conditions don't exist the market will be inefficient.

Securities markets regulations

Securities are regulated in two ways. The Reserve Bank and Treasury implement government regulations that reflect economic and monetary policies, and the Australian Securities and Investment Commission (ASIC) administer Corporations Law and related regulations.

The government influences the supply of loan funds and their cost in the capital market. To stimulate the economy the government makes funds available at an interest rate that encourages investment and consumption. To dampen the economy, it restricts funds, creating tight liquidity, and interest rates are raised to discourage investment and consumption. In Australia the Reserve bank and Treasury implement these strategies.

Corporations, legislation and regulation

In Australia ASIC is solely responsible for the administration and regulation of companies and reports to the Commonwealth Attorney General and the Commonwealth Parliament. The Corporations Law includes provisions that:

As you can see, the market is tightly regulated to make it work smoothly and efficiently.

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