# Green accounting

Green accounting is a type of accounting that attempts to factor environmental costs into the financial results of operations. It has been argued that gross domestic product ignores the environment and therefore policymakers need a revised model that incorporates green accounting. The major purpose of green accounting is to help businesses understand and manage the potential quid pro quo between traditional economics goals and environmental goals. It also increases the important information available for analyzing policy issues, especially when those vital pieces of information are often overlooked. Green accounting is said to only ensure weak sustainability, which should be considered as a step toward ultimately a strong sustainability.
It is a controversial practice however, since depletion may be already factored into accounting for the extraction industries and the accounting for externalities may be arbitrary. It is obvious therefore that a standard practice would need to be established in order for it to gain both credibility and use. Depletion is not the whole of environmental accounting however, with pollution being but one factor of business that is almost never accounted for specifically. Julian Lincoln Simon, a professor of business administration at the University of Maryland and a Senior Fellow at the Cato Institute, argued that use of natural resources results in greater wealth, as evidenced by the falling prices over time of virtually all nonrenewable resources.

## Etymology

The term was first brought into common usage by economist and professor Peter Wood in the 1980s.

## Practice

Environmental responsibility is a potent issue among businesses in this modern age. It has become necessary for corporation to formulate methods of promoting green causes for the present and the future. Green accounting helps promote a sustainable future for businesses as it brings green public procurement and green research and development into the big picture. Penalties for polluters and incentives (such as tax breaks, polluting permits, etc.) are also a crucial part of this type of accounting.
The System of National Accounts (SNA) defines Net Domestic Product (NDP) as:
   NDP = Net Exports + Final Consumption (C) + Net Investment (I)
This is also a typical formula found in articles and texts about accounting.
Green Accounting, however, uses the System of Environmental Economic Accounting (SEEA), which focuses on the depletion of scarce natural resources and measures the costs of environmental degradation along with its prevention.
Thus, the NDP is newly defined as Green NDP, or also known as EDP. The green accounting formula is:
   EDP = Net Exports + C + NAp. ec + (NAnp.ec - NAnp.n)
Where:
EDP = Environmental Domestic Product,
C = Final Consumption,
NApec = Net Accumulation of Produced Economic Assets,
NAnp.ec = Net Accumulation of Non-produced Economic Assets,
NAnp.n = Net Accumulation of Non-produced Natural Assets.

## Challenges
### Environmental protection and economic growth

The effect of environmental policies on the economy has always been a controversial topic. Many economists argue that sanctioned limits on pollution curtail economic growth. For instance, between 1973 and 1982, the United States imposed stricter regulations on pollution, which led to a 0.09% decrease per year in the national output growth. A study conducted in 1990 also analyzed the economic growth with during the time period between 1973 and 1980s. The result indicated that the government regulation reduced the annual GNP by 0.19% per year. Other researchers argue that those number is insignificant compared to protecting and sustaining the priceless environment.

### Distributional impacts of environmental and natural resource policies

Not all industries pollute the same amount; chemical and paper manufacturing industries, for example, tend to pollute more than others. It is difficult to accurately measure the pollution level of each industry in order to categorize and to set up a fair set of policies. In particular, improved water quality might highly favor the higher income groups due to the fact that most improvements are done in the urban areas.

### Links between trade and environmental and natural resource policies

During the time of globalization and the rapid expansion of the international market, the US policymakers have come to realize the importance of what is happening in other countries. Before making any decision and submitting the final draft to Congress, the policymakers were concerned about the effects of the North American Free Trade Agreement on the environment. National accounting systems that include environmental and natural resources could provide useful information during negotiations over the nations' commitments to restore or maintain natural capital.
Trade restrictions have not been used when a country's production and processing methods result in excessive discharges of pollutants (carbon, sulfur, nitrogen oxides, chlorofluorocarbons) across national boundaries. The difficulty comes in when determining the effects of trans-boundary pollutants on industry costs.