Economic Analysis
In economics, wealth in a commonly applied accounting sense is the net worth of a person, household, or nation, that is, the value of all assets owned net of all liabilities owed at a point in time. For national wealth as measured in the national accounts, the net liabilities are those owed to the rest of the world. The term may also be used more broadly as referring to the productive capacity of a society or as a contrast to poverty. Analytical emphasis may be on its determinants or distribution.
Economic terminology distinguishes between two types of variables: stock and flow. Wealth, as measurable at a date in time, is a stock, like the value of an orchard on December 31 minus debt owed on the orchard. For a given amount of wealth, say at the beginning of the year, income from that wealth, as measurable over say a year is a flow. What marks the income as a flow is its measurement per unit of time, like the value of apples yielded from the orchard per year.
In macroeconomic theory the 'wealth effect' may refer to the increase in aggregate consumption from an increase in national wealth. One measure of it is the wealth elasticity of demand. It is the percentage change in the amount demanded of consumption for each one-percent change in wealth.
Wealth may be measured in nominal or real values, that is in money value as of a given date or adjusted to net out price changes. The assets include those that are tangible (land and capital) and financial (money, bonds, etc.). Measurable wealth typically excludes intangible or nonmarketable assets such as human capital and social capital. In economics, 'wealth' corresponds to the accounting term 'net worth'. But analysis may adapt typical accounting conventions for economic purposes in social accounting (such as in national accounts). An example of the latter is generational accounting of social security systems to include the present value projected future outlays considered to be liabilities. Macroeconomic questions include whether the issuance of government bonds affects investment and consumption through the wealth effect.
Environmental assets are not usually counted in measuring wealth, in part due to the difficulty of valuation for a non-market good. Environmental or green accounting is a method of social accounting for formulating and deriving such measures on the argument that an educated valuation is superior to a value of zero (as the implied valuation of environmental assets).
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