Pearson Edexcel International GCSE Economics: Environmental protection and redistribution of income (4EC1)

This guide is written for the Pearson Edexcel International GCSE Economics (4EC1) specification, Issue 3, and covers Paper 2 content in section 2.1.1, statements e) and f): protection of the environment and redistribution of income. The specification has one tier of entry. All figures, countries and firms below are invented for practice and are not real statistics.

Revise from the revision notes, then test yourself with the practice questions. See the course hub, the checklist and the free diagnostics. For tax shifting the supply curve and for price elasticity, see elasticity: calculation and use.

What this unit covers

Spec point	What you must be able to do
2.1.1 e)	Explain how business activity damages the environment: visual pollution (including litter), noise, air and water pollution
2.1.1 e)	Explain government intervention: taxation, subsidy, regulation, fines, pollution permits, provision of parks
2.1.1 f)	Define income inequality, absolute poverty and relative poverty
2.1.1 f)	Give reasons to reduce poverty and inequality: meet basic needs, raise living standards, ethics
2.1.1 f)	Explain progressive taxation, redistribution through benefit payments, and investment in education and healthcare

Part 1: How business activity damages the environment

Firms try to keep their own costs low. If a firm can dump waste or make noise without paying for the harm, that harm falls on other people. Economists call it an external cost: a cost borne by a third party. The firm’s private cost is lower than the cost to society, so the market produces too much of the polluting good.

Type	Example from business activity	Who suffers
Visual pollution (including litter)	Discarded packaging from a takeaway chain; an untidy quarry	Local residents, tourism businesses
Noise pollution	A night-shift factory; heavy lorries on a village road	Neighbours, sleep and concentration
Air pollution	Smoke from a cement works; delivery vehicle exhaust	Anyone who breathes it, health services
Water pollution	A dye works releasing waste into a river	Fishers, farmers, drinking-water users

To score well, write a chain: the activity, then the damage, then the consequence for people or other firms. “Pollution is bad” is not a chain.

Part 2: Government intervention to protect the environment

Taxation

A per-unit tax raises the firm’s cost, so the supply curve shifts up (left) by the amount of the tax. Price rises and output falls.

Worked example. Take the market for paving slabs in Country X (illustrative). Before tax, quantity demanded is 600 − 30P and quantity supplied is −120 + 30P, where P is the price in dollars.

1. Equilibrium: 600 − 30P = −120 + 30P, so 60P = 720, P = 12 dollars and Q = 240.
2. The government adds a tax of 4 dollars per unit. Supply becomes −120 + 30(P − 4). Set equal to demand: 600 − 30P = −240 + 30P, so P = 14 dollars and Q = 180.
3. Buyers pay 2 dollars more. Sellers receive 14 − 4 = 10 dollars, which is 2 dollars less than before. The burden is shared equally.
4. Tax revenue is 4 × 180 = 720.
5. Output falls by (180 − 240) ÷ 240 × 100 = −25%.
6. If each slab causes 6 dollars of external cost, the total external cost falls from 6 × 240 = 1,440 to 6 × 180 = 1,080, a fall of 360.

Evaluation: the tax works best if demand is price elastic, because quantity then falls by a larger percentage than price rises. If demand is inelastic, buyers keep buying and the tax mainly raises revenue. Revenue can also be spent on the environment. Taxes may raise prices for poorer households and can push firms to move abroad.

Subsidy

A subsidy is a payment to producers that lowers their costs. Governments use it to encourage cleaner choices, such as renewable energy equipment.

Worked example. In Country X, solar panels have quantity demanded of 800 − 4P and quantity supplied of −100 + 5P.

1. Before the subsidy: 800 − 4P = −100 + 5P, so P = 100 and Q = 400.
2. A subsidy of 9 dollars per panel means sellers supply −100 + 5(P + 9). Then 800 − 4P = −55 + 5P, so P = 95 and Q = 420.
3. Buyers pay 5 dollars less. Sellers receive 95 + 9 = 104 dollars, which is 4 dollars more.
4. Cost to the government: 9 × 420 = 3,780. Output rises by 5%.

Evaluation: the subsidy helps cleaner production, but it has an opportunity cost, because the same money could fund schools or hospitals. It does not discourage the polluting alternative directly.

Regulation and fines

Regulation sets rules: a ban on burning waste, limits on noise at night, a required filter on chimneys. It is direct and clear, but it needs inspectors, and compliance costs can raise prices.

A fine is a penalty for breaking a rule. It only deters if firms expect to pay more than they gain. As a reasoning aid (not a required calculation): a factory saves 30,000 dollars a year by dumping waste. The chance of being caught is 40% and the fine is 50,000 dollars, so the expected fine is 0.4 × 50,000 = 20,000 dollars. That is less than the saving, so the firm may carry on. A fine of 75,000 dollars or more would remove the gain. Weak inspection makes fines weak.

Pollution permits

The government sets a limit (a cap) on total pollution and issues permits that can be traded.

Worked example. Firms J and K each emit 600 tonnes and each receives 500 permits. J can cut a tonne for 15 dollars, K for 60 dollars.

1. No trading: each cuts 100 tonnes. Cost: J 100 × 15 = 1,500; K 100 × 60 = 6,000; total 7,500.
2. Trading at 30 dollars per permit: J cuts 200 tonnes (cost 3,000) and sells 100 permits for 3,000. K buys 100 permits for 3,000 and cuts nothing.
3. Net cost: J 3,000 − 3,000 = 0; K 3,000. Total cost of reaching the same cap: 3,000, a saving of 4,500.

The total emissions are identical, but the target is met at lower cost. Drawbacks: the limit may be set too loosely, firms need monitoring, and a rich firm can buy the right to keep polluting.

Government provision of parks

Parks are provided by the state and paid for by taxation. Trees take in some air pollution, grass and ponds absorb rainwater, and open space gives people a place to relax away from traffic. The opportunity cost is the land and money that could have built homes or schools. A park does not stop a factory polluting, so it works alongside other measures.

Part 3: Income inequality and poverty

Income inequality means that income is unevenly shared between individuals or households in an economy.

Absolute poverty means being unable to afford the basics of life: food, safe water, housing and clothing. It is judged against a fixed standard.

Relative poverty means having an income far lower than what is normal in your own country. One common measure is a fraction of the median income, such as 50% or 60%. Median means the middle value when incomes are ranked.

Worked example. Ten households in Country A (illustrative) have monthly income per person of 90, 130, 160, 210, 260, 320, 400, 520, 700 and 1,210 dollars.

1. Median = (260 + 320) ÷ 2 = 290.
2. Relative poverty line at 60% of the median = 0.6 × 290 = 174. Three households (90, 130, 160) are below it.
3. Suppose the absolute line is 150 dollars. Two households (90, 130) are below it.
4. Now every income rises by 20%. The new median is 348, and the relative line is 208.80. The three poorest (108, 156, 192) are still below it. The absolute line is unchanged at 150, so only one household (108) is below it.

Absolute poverty fell, but relative poverty did not. Growth that lifts everyone equally cannot cut relative poverty or inequality. The top household’s share of total income is 1,210 ÷ 4,000 = 30.25% before and after.

Why reduce poverty and inequality

• Meet basic needs: people in absolute poverty may go without food, safe water or medicine.
• Raise standards of living: more income for the poorest means more goods and services consumed, better health and a more productive workforce.
• Ethical reasons: many people believe that everyone deserves a minimum standard of life and that large gaps are unfair.

Counter-point: very high taxes on high earners may reduce effort and enterprise, so there is a trade-off.

Part 4: Government action to reduce inequality and poverty

Progressive taxation

Under a progressive tax, richer people hand over a bigger share of what they earn. Country B (illustrative) taxes annual income at 0% up to 8,000, 20% from 8,000 to 30,000, and 40% above 30,000.

Gross pay	Tax	Net pay	Average tax rate
6,000	0	6,000	0%
20,000	0.2 × 12,000 = 2,400	17,600	12%
50,000	4,400 + 0.4 × 20,000 = 12,400	37,600	24.8%
100,000	4,400 + 0.4 × 70,000 = 32,400	67,600	32.4%

Net pay is gross pay minus tax. Because the average rate climbs with income, the tax is progressive. By contrast, a flat 10% sales tax is regressive in effect if a poorer household spends 8,400 of its 9,000 income (tax 840, which is 9.3% of income) while a richer one spends 36,000 of 80,000 (tax 3,600, which is 4.5%).

Redistribution through benefit payments

Benefits are money paid by the government to people, such as help for the unemployed, the disabled or families with children. They are funded by taxes.

Worked example. Country C (illustrative) has five equal income groups, listed in dollars per household per year.

Group	Income before	Tax paid	Benefits received	Income after
Poorest	4,000	200	3,600	7,400
Second	9,000	1,100	2,200	10,100
Middle	15,000	2,700	900	13,200
Fourth	24,000	5,800	300	18,500
Richest	48,000	14,400	0	33,600

The richest earn 48,000 ÷ 4,000 = 12 times the poorest before tax and benefits, and 33,600 ÷ 7,400 = 4.5 times after. The poorest group’s income rises by 85%, the richest falls by 30%. Total tax is 24,200 and total benefits 7,000; the remainder pays for other spending.

Evaluation: benefits help at once, but they cost money, may reduce the incentive to look for work if they are cut sharply as pay rises, and do not remove the cause of low pay.

Investment in education and healthcare

Spending on schools, training and healthcare raises skills and health, so people can earn more and work for longer. It tackles the cause, not just the symptom. Suppose a government spends 2 million dollars on a rural school programme for 500 children: that is 4,000 dollars per child. The benefit comes years later, and the money has an opportunity cost.

Common errors

• Confusing absolute poverty (fixed standard) with relative poverty (compared with others).
• Saying a subsidy “taxes” polluters. A subsidy is paid to producers.
• Forgetting that a tax raises revenue but only reduces pollution if quantity falls.
• Describing progressive tax as “the rich pay more money”. A flat tax does that too. Progressive means a higher percentage.
• Listing methods without a judgement. For evaluation, compare methods and reach a conclusion.

Official syllabus

Pearson Edexcel International GCSE in Economics (4EC1), specification Issue 3, February 2026, Pearson Education Limited, section 2.1.1 e) and f).