According to personal finance, saving represents conserving of cash for future application. Usually, it is done with the help of depositing it. This has some differences with investment where a risk factor is always involved.
Saving is a function of depositing money for any particular purpose or future application and on the other hand, savings indicates towards the money, which has been saved. For instance, an individual may determine to begin saving 10% of his earnings simply due to the reason that he is targeting his savings to increase to such an amount so that it is adequate for purchasing a car.
According to the classical economists, the interest rates conform for matching investment and savings. In this way, the accumulation of inventories or common overrun in manufacturing can be prevented. An increase in savings results in a drop of rates of interest and this encourages investment.
Nevertheless, John Maynard Keynes debated that neither investment nor savings are really amenable to rates of interest (both are inflexible to interest) and therefore, substantial variations in interest rates are necessary. In addition, it is the supply of and demand for money, which ascertain the rates of interest in the short term. Hence, savings may surpass investment for a substantial period of time and this results in a decline in the economy (decline in Gross Domestic Product and employment) and a general glut.
The real interest rate is that interest rate where tax is withheld subtracting the inflation rate. In a number of cases, the real interest rate may become negative and that is termed as inflation risk.