is the branch of economics which analyses the functions of money. Storage of value is one of the three generally accepted functions of money. The other functions are the medium of exchange, which is used as an intermediary to avoid the inconveniences of the coincidence of wants, and the unit of account, which allows the value of various goods, services, assets and liabilities to be rendered in multiples of the same unit. Money is well-suited to storing value because of its purchasing power. It is also useful because of its durability. Because of its function as a store of value, large quantities of money are hoarded. Money's usefulness as a store of value declines if there are significant changes in the general level of prices. So if inflation rises, purchasing power declines and a cost is placed on those holding money. Workers who are paid in a currency which is experiencing high-inflation will prefer to spend their income quickly instead of saving it. When a currency loses its store of value, or more accurately when a currency is perceived to lose its future purchasing power, it fails to function as money. This causes people to use currencies from other countries as a substitute. According to the Cambridge cash-balance theory, which is represented by the Cambridge equation, money's ability to store value is more important than its function as a medium of exchange. Cambridge claims that the demand for money is derived from its ability to store value. This is contrary to Fisher economists' belief that demand arises because money is needed for exchange.
Other stores of value
Examples for stores of value other than money are:
Collectibles, e.g. original art by a famous artist or antiques such as ancient artifacts or ancient coinage
Gemstones
Gift economy relationships – value is stored as social reputation
Labor notes
Livestock ownership and control
Fine wine
Precious metals – ownership in gold, silver, platinum, and palladium
Real estate – ownership in actual deeds in protectable controllable land
Stored-value cards – value is physically stored on the cards in the form of binary coded data
While these items may be inconvenient to trade daily or store, and may vary in value quite significantly, they rarely lose all value. It need not be a capital asset at all, merely have economic value that is not known to disappear even in the worst situation. The disadvantage for land, houses and property as a store for value is that it may take time to find a buyer for those assets. In principle, this could be true of any industrial commodity, but gold and precious metals are generally favored, because of their demand and rarity in nature, which reduces the risk of devaluation associated with increased production and supply.
Speculative investments
Insofar as an investment is speculative, it should not be considered a store of value because it lacks stability. An asset should only be considered a store of value if it is stable against future purchasing power. At various times throughout history, people and nations have famously made the mistake of believing that they could "store value" in speculative instruments, misunderstanding that ones personal choice to invest in a speculative asset does not automatically convert that asset into a proper and predictable store of value. Examples of assets that are not traditionally considered stores of value:
