This table shows the various measures of national income and how they are derived. The income (GDP(I)) and expenditure (GDP(E)) measures of gross domestic product (GDP) are different views of domestic production. In practice GDP is derived from the gross national expenditure (GNE) within New Zealand, adding exports and subtracting imports to obtain expenditure on goods and services actually produced within the country. Gross national income (GNI) takes into account the investment income flowing into New Zealand and the earnings going to foreign residents – a consistently negative figure. GNI is then adjusted further to take account of foreign aid and personal remittances, to produce the gross national disposable income (GNDI). The depreciation of buildings and machinery is costed to provide the net national disposable income (NNDI). The NNDI represents the amount of money that the residents of New Zealand have to spend.

The national accounts are frequently revised as more up to date data is received. The 2007 figures given in this table were correct as at April 2008.