Sustainable national income

Sustainable national income, (SNI) is an indicator for environmental sustainability, which gives an estimate of the production level at which - with the technology in the year of calculation - environmental functions remain available ‘for ever’. Sustainable national income, (SNI) is an indicator for environmental sustainability, which gives an estimate of the production level at which - with the technology in the year of calculation - environmental functions remain available ‘for ever’. The national income of a country is an estimate of the yearly production of goods and services. The loss of possible uses of the non-human made physical surroundings, named environmental functions, on which humanity is dependent in all its doings remains outside the estimate. Also the present and future production is dependent on these environmental functions.