Types of GDP

1)Nominal GDP : which is affected by price and quantity.
2)Real GDP : which equals Nominal GDP - price.
The GDP income account
Another way of measuring GDP is to measure the total income payable in the GDP income accounts. In this situation, one will sometimes hear of Gross Domestic Income (GDI), rather than Gross Domestic Product. This should provide the same figure as the expenditure method described above. (By definition, GDI=GDP. In practice, however, measurement errors will make the two figures slightly off when reported by national statistical agencies.)
The formula for GDP measured using the income approach, called GDP(I), is:
GDP = Compensation of employees + Gross operating surplus + Gross mixed income + Taxes less subsidies on production and imports
Compensation of employees (COE) measures the total remuneration to employees for work done. It includes wages and salaries, as well as employer contributions to social security and other such programs.
Gross operating surplus (GOS) is the surplus due to owners of incorporated businesses. Often called profits, although only a subset of total costs are subtracted from gross output to calculate GOS.
Gross mixed income (GMI) is the same measure as GOS, but for unincorporated businesses. This often includes most small businesses.
The sum of COE, GOS and GMI is called total factor income, and measures the value of GDP at factor (basic) prices.The difference between basic prices and final prices (those used in the expenditure calculation) is the total taxes and subsidies that the Government has levied or paid on that production. So adding taxes less subsidies on production and imports converts GDP at factor cost to GDP(I).
Another formula can be written as this:
GDP = R + I + P + SA + W
where R = rents
I = interests
P = profits
SA = statistical adjustments (corporate income taxes, dividends, undistributed corporate profits)
W = wages