Environmental Management Accounting and Sustainability in Business

A plastics company in Lagos pays a fine for discharging untreated effluent. The fine is booked in administration costs, the cost of the effluent treatment that would have avoided it is in the capital budget as a pure expense. The loss of two customers who will no longer buy from a polluter appears nowhere. The accounts say the treatment plant does not pay.

They are wrong, because they count its cost and miss its benefits. Environmental management accounting exists to put these costs and benefits in front of management.

This topic explains why environmental issues matter to business, how conventional management accounting misleads, what environmental management accounting is and where it is applied, the three pillars of sustainability and the triple bottom line, why environmental accounting is important, and the Nigerian rules that now apply. It builds on the throughput accounting topic.

The next topic covers environmental costs, the methods of accounting for them and the management accountant’s role.

The purpose of environmental management accounting

For some companies environmental issues are significant for strategy and for cost. Poor behaviour can bring fines for pollution, environmental taxes, loss of land value and the cost of law suits. It can also change customers’ attitudes, because buyers increasingly take environmental factors into account. EMA gives management information to handle these issues. Traditional techniques can:

• under-estimate or even ignore the cost of poor environmental behaviour;
• over-estimate the cost of improving environmental practice; and
• under-estimate the benefits of improving it.

EMA provides financial and non-financial information and complements conventional methods. Its main applications are:

• Estimating annual environmental costs, for example the cost of waste control.
• Budgeting. Including environmental costs and savings in operating and capital budgets.
• Product pricing. Making sure the price recovers the environmental costs a product causes.
• Investment appraisal. Including clean-up costs at the end of a project and the environmental costs and benefits of the project itself.
• Estimating savings from environmental projects, such as lower energy use or waste.

A framework for EMA

EMA can be organised by whether the information is monetary (cost accounting, budgets, relevant costing, life cycle costing, target costing) or physical (flows of materials and energy, environmental impacts), by whether it looks at the past or the future, by whether the focus is short or long term, and by whether it is routine or ad hoc.

Monetary EMA, for example, covers environmental cost accounting and the budgets; physical EMA covers material and energy flow accounting, assessment of impacts and long-term physical planning.

Sustainability and the triple bottom line

To succeed over the long term a business must be sustainable: profitable, but also mindful of non-financial aspects. Sustainability is described by performance in three areas: economic (financial), environmental and social. These are the three pillars, or the three Ps, people, planet and profit. People means fair and beneficial practice for employees, the community and customers.

Planet means sustainable practice: energy efficiency, less pollution, renewable materials and energy, less waste and more recycling. Profit is the economic value created after the cost of all inputs, including capital. A business is unlikely to survive in the long term unless it considers people and planet as well as profit.

Stakeholders now include the community at large as well as owners, employees, customers and suppliers. Society can become poorer even while companies grow rich, if the damage to the environment and society is not counted. A successful business must be financially secure, minimise its negative environmental impact and meet the expectations of society.

Public companies report financial results in annual statements, and many also report social and environmental goals in a strategic or sustainability report.

The traditional bottom line is the profit or loss at the foot of the income statement. A gold mine can show a profit while it pollutes the water supply, harming people and livestock: the statements show the profit, not the cost to society. The triple bottom line adds social and environmental bottom lines to the economic one, which brings sustainability into business decisions.

Why environmental accounting matters

• It reveals hidden costs. Pollution, deforestation and carbon emissions are not normally in the financial statements. Environmental accounting brings these externalities into view.
• It promotes sustainable decisions. When management sees the full environmental cost of its operations, it is more likely to adopt greener practice.
• It informs public policy. Governments can design better regulation and incentives if they know the true environmental effect of economic activity.
• It encourages corporate responsibility. Shareholders and consumers demand transparency, and environmental accounting supports reporting on sustainability.
• It supports long-term planning. It gives data for forecasting and planning sustainable development, balancing growth with environmental health.

Environmental accounting analyses how an organisation’s operations, products or services affect the environment and then shares that information with others, including by showing environmental costs in the financial records.

Nigerian environmental and climate rules as at November 2026

• Climate Change Act 2021, signed on 18 November 2021. It sets a framework for net-zero greenhouse gas emissions between 2050 and 2070, creates the National Council on Climate Change, and requires a carbon budget and a National Climate Change Action Plan every five years. It applies to public and private entities. Private entities with 50 or more employees must designate a climate change or environmental sustainability officer and take part in the emission reduction targets, and a private entity that fails to meet its reduction targets may be fined by the Council.
• IFRS S1 and S2. Public interest entities must report sustainability-related and climate-related information for periods beginning on or after 1 January 2028 under the Financial Reporting Council of Nigeria’s amended 2026 roadmap, with SMEs from 2030.

These rules mean that environmental data is no longer optional for many Nigerian companies, so the management accountant’s systems must capture it. Confirm current regulator notices before advising a real client.

Sources and references

• Climate Change Act 2021.
• Financial Reporting Council of Nigeria, Roadmap Report for the Adoption of IFRS Sustainability Disclosure Standards in Nigeria (amended 2026); IFRS S1 and IFRS S2.

These points are stated as at 6 November 2026.

Layouts

1. Environmental project appraisal. Net annual benefit = material or energy saved + disposal costs avoided + fines or contingent costs avoided − running costs. NPV = net benefit × annuity factor − cost. Show the appraisal with and without the contingent benefits.
2. Emissions. Quantity × emission factor (given), summed to a carbon footprint in tonnes of carbon dioxide equivalent (divide kilograms by 1,000).
3. Intensity. Tonnes of carbon dioxide equivalent ÷ revenue in ₦ million.

Money is in ₦ million, emissions in tonnes, and each answer is rounded once at the end.

Worked examples

1. With all benefits.
   Net annual benefit 14.0 + 6.5 + 3.5 − 5.0 = ₦19.0m.
   Present value 19.0 × 3.7845 = ₦71.91m.
   NPV 71.91 − 60.00 = +₦11.91m.
   Payback 60 ÷ 19.0 = 3.16 years.
2. Without the avoided fines.
   Net annual benefit 14.0 + 6.5 − 5.0 = ₦15.5m.
   Present value 15.5 × 3.7845 = ₦58.66m.
   NPV 58.66 − 60.00 = −₦1.34m.
3. Comment. A conventional appraisal that ignores contingent environmental costs would reject the plant. Including them reverses the decision. The estimate of the fines is uncertain, so the company should test it, but leaving it out treats it as zero, which is the most unlikely value.

1. Electricity.
   1,200,000 × 0.45 = 540,000 kg = 540 tonnes.
2. Diesel.
   150,000 × 2.68 = 402,000 kg = 402 tonnes.
3. Footprint.
   540 + 402 = 942 tonnes.
4. Intensity.
   942 ÷ 3,000 = 0.31 tonnes per ₦ million of revenue.
5. Target.
   10% × 942 = 94.2 tonnes to save, leaving 847.8 tonnes.

Expect variants: different life or rate, a carbon price to attach to emissions, an investment that cuts emissions and cost together, or a non-financial table to be interpreted.

Common mistakes

• Treating EMA as a replacement for management accounting. It complements it.
• Leaving contingent environmental costs out of an appraisal. Show the result both ways.
• Confusing the three pillars with three bottom lines in a list with no examples. Give an indicator for each.
• Mixing kilograms and tonnes. Divide kilograms by 1,000.
• Presenting environmental accounting as voluntary in Nigeria without mentioning the Climate Change Act and the 2028 reporting date.

Quick revision

• EMA: financial and non-financial information for environmental decisions; complements conventional methods.
• Traditional methods: ignore or under-estimate environmental costs and benefits, over-estimate improvement cost.
• Applications: annual environmental costs, budgeting, pricing, investment appraisal, savings.
• Three pillars: people, planet, profit; triple bottom line.
• Importance: hidden costs, sustainable decisions, policy, responsibility, long-term planning.
• Nigeria: Climate Change Act 2021 (officer for entities with 50 or more employees); IFRS S1 and S2 from 2028.

How the marks are earned

• Explain: the purpose of EMA and the weaknesses of conventional methods.
• Appraise: the layout, each line, with and without environmental items, and a recommendation.
• Discuss: importance, with an example for each point.

Practice questions

These are original questions, written in the style of the Skills examination. Work each one before you open the answer.

Recall check: multiple choice

Section B style: written questions

Model answers

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