Pearson Edexcel IAL Economics: Types, growth and objectives of businesses (YEC11)

This guide follows the Pearson Edexcel International Advanced Subsidiary/Advanced Level in Economics specification (Issue 2, June 2018) and covers section 3.3.1, Types and sizes of businesses: items 1 to 3. The specification labels Unit 3 (Business behaviour) as an IAL compulsory unit, so it belongs to the full International A Level and not to the International AS. Units 1 and 2 are the International AS content; Units 3 and 4 are the extra International A2 content. All figures below are invented and illustrative.

Use it with the revision notes and the practice set. Check your level first with the free diagnostics, then tick off topics on the course checklist. The course hub lists everything else, and exam preparation covers technique.

What this guide covers

Item	You must be able to
1a	Describe private sector, state-owned, for-profit, not-for-profit, co-operative and joint venture organisations
2a	Distinguish SMEs from large corporations
2b, 2c	Explain organic growth and four kinds of merger or takeover, with advantages and disadvantages
2d, 2e	Explain constraints on growth and why some firms stay small
2f, 2g	Assess the impact of growth and of demergers on businesses, workers and consumers
3a, 3c	Compare profit, revenue and sales volume maximisation, and satisficing, using the formulae
3b	Explain the principal-agent problem

1. Types of business

Private sector firms are owned by individuals or shareholders and normally aim to make a return for them. State-owned enterprises (the public sector) belong to the government. They are funded by taxes, borrowing or sales revenue and may aim to provide a universal service, protect jobs or correct market failure rather than maximise profit.

For-profit organisations distribute surplus to owners. Not-for-profit organisations, such as charities and social enterprises, reinvest any surplus in their purpose. A not-for-profit body can still run a surplus. The difference is where it goes.

A co-operative is owned and controlled by its members, who may be workers, consumers or suppliers. Members usually have one vote each. Strengths: motivated owners, shared gains and loyalty. Weaknesses: slow decisions and limited ability to raise finance.

A joint venture is a project or new firm created by two or more businesses that share costs, risks, expertise and profit. It suits entry to an unfamiliar market. The risks are conflicts over control, clashing cultures and sharing the rewards.

2. Size and growth

SMEs (small and medium-sized enterprises) are measured in different countries by employees, turnover or assets, so always state the measure you use. Large corporations have more employees and higher turnover, and often have market power and access to capital markets.

Organic growth

Organic (internal) growth comes from reinvested profit, new products, new branches or new markets.

Worked example. A small bakery group in Country A raises revenue from £4.0m to £4.6m. Growth = (4.6 − 4.0) / 4.0 × 100 = 15%.

Advantages: low risk, control kept, culture preserved, no premium paid. Disadvantages: slow, limited by retained profit, and rivals may grow faster.

Mergers and takeovers

A merger is a joint decision to combine. A takeover is the purchase of a controlling stake and may be agreed or hostile. Both are external growth.

Type	Definition	Example	Main advantage	Main disadvantage
Horizontal	Same industry, same stage	Two bakery chains	Economies of scale, more market power	Regulatory challenge, job losses, culture clash
Forward vertical	Towards the customer	Baker buys a shop chain	Secures outlets, keeps the retail margin	Unfamiliar skills, high cost
Backward vertical	Towards the supplier	Baker buys a flour mill	Secure supply, lower input costs	Supplier may become inefficient without competition
Conglomerate	Unrelated industries	Baker buys a travel agent	Spreads risk	No shared expertise, loss of focus

Worked example: horizontal. The market is worth £60m. Firm A sells £18m and Firm B sells £12m. Shares: A = 18/60 = 30%; B = 12/60 = 20%; merged = 50%. Head-office costs fall from £2.4m + £1.8m = £4.2m to £3.0m, a saving of £1.2m.

Worked example: backward vertical. A manufacturer buys 200,000 units a year of an input at £5.00. The supplier’s cost is £3.60. After the takeover, the saving is (5.00 − 3.60) × 200,000 = £280,000, or 28% of the old bill. Forward integration works the same way: if goods leave the factory at £40 and the shop sells at £50, the manufacturer keeps the £10 margin, 20% of the retail price.

Worked example: conglomerate. A soup maker’s profits are £6m, £1m and £5m over three years. A cold-drinks maker’s are £1m, £6m and £2m. Combined, profit is £7m each year. Spread across unrelated products, results become stable.

Worked example: takeover price. A firm’s shares trade at £2.40 and the bidder offers £3.12. Premium = (3.12 − 2.40) / 2.40 = 30%. With 5 million shares, the bid costs £15.6m against a market value of £12.0m, so £3.6m extra.

Constraints on growth

• Size of market. A niche or local market caps sales.
• Access to finance. Small firms may be refused credit or lack collateral; retained profit is limited.
• Owner objectives. Owners may prefer control, a quiet life or personal service.
• Government regulation and bureaucracy. Competition rules can block mergers, and compliance costs fall hardest on small firms.

Why some firms stay small and others grow

Small firms survive where demand is local or specialised, where customers value personal service, where flexibility matters more than scale, or where owners choose control over expansion. Firms grow to gain economies of scale, market power and diversification, to survive, or because managers and shareholders want growth.

Impact of growth

Group	Possible gains	Possible losses
Businesses	Lower unit costs, brand power, bargaining power over suppliers	Diseconomies of scale, integration problems, debt, small rivals squeezed out
Workers	Security, promotion, training	Redundancies after mergers, impersonal management, harsher conditions
Consumers	Lower prices if savings are passed on, wider range, more investment	Higher prices, less choice, weaker incentive to innovate

The outcome depends on whether savings are passed on, how strong competition remains and how the regulator responds. Strong evaluation says which effect is likelier in the case given.

Demergers

A demerger separates a firm into independent businesses, by selling or floating parts. Reasons: diseconomies of scale, loss of focus on core activities, raising cash, releasing value from undervalued assets, or a regulator’s demand. Impact: businesses gain focus and the parts may be valued more highly, but lose scale economies. Workers face uncertainty and redundancies, or may gain from closer management. Consumers may gain from better service, or lose if prices rise and ranges shrink.

3. Business objectives

Economists often assume profit maximisation, but real firms vary.

Objective	Rule	Output sold
Profit maximisation	MC = MR, with MC cutting MR from below; profit = TR − TC	Lowest of the three
Revenue maximisation	MR = 0; TR = P × Q	Higher
Sales volume maximisation	Largest Q with AR ≥ AC (break-even, AR = AC)	Highest

Revenue is greatest where price elasticity of demand is exactly 1, because MR = 0.

Worked example. A bakery faces P = 120 − 6Q (Q in thousand units, money in £000). Then TR = 120Q − 6Q² and MR = 120 − 12Q. Total cost is TC = 80 + 12Q + 3Q², so MC = 12 + 6Q.

Q	P	TR	TC	Profit	MR	MC
5	90	450	215	235	60	42
6	84	504	260	244	48	48
7	78	546	311	235	36	54
10	60	600	500	100	0	72

• Profit maximum: 120 − 12Q = 12 + 6Q, so Q = 6, P = £84, profit £244k.
• Revenue maximum: MR = 0, so Q = 10, P = £60, TR £600k, but profit falls to £100k.
• Sales volume maximum with no loss: AR = AC gives 9Q² − 108Q + 80 = 0, so Q = 11.2, P = £52.8, profit zero.

Reading the diagram in words. Put price and costs on the upward axis and output along the base. The demand (AR) curve slopes down and the MR curve lies below it, twice as steep for a straight line. MC rises and cuts MR from below at Q = 6, which gives profit maximisation. MR meets the horizontal axis at Q = 10, which gives revenue maximisation. AR crosses AC at Q = 11.2, which gives sales volume maximisation. Labelling these three points on one diagram is a strong way to compare objectives.

Satisficing (a behavioural theory) says managers aim for acceptable levels of profit, sales and staff satisfaction, not the maximum. If the owners expect profit of at least £200k, any output from about 3.8 to 8.2 thousand units is acceptable, and managers may pick a comfortable point in that range.

The principal-agent problem

In large firms, ownership and control are separated. Shareholders (principals) own the firm. Managers (agents) run it and know more than owners do (asymmetric information). Managers may pursue pay, status or growth rather than profit.

Worked example. A manager is paid 2% of revenue. At the profit-maximising output the bonus is 2% × £504k = £10,080. At the revenue-maximising output it is 2% × £600k = £12,000. The manager prefers revenue, although owners lose £244k − £100k = £144k of profit. Fixes: link pay to profit or share price, give share options, use independent directors and audits, and rely on takeover threat. Each has limits: monitoring is costly, and profit-linked bonuses can encourage short-termism.

Common errors

• Writing that a merger and a takeover are identical. A merger is agreed jointly; a takeover is a purchase.
• Confusing forward and backward integration. Forward means towards customers, backward towards suppliers.
• Calling a conglomerate merger “diversification” with no benefit explained. Say it spreads risk.
• Stating that MR = MC maximises revenue. It maximises profit; revenue needs MR = 0.
• Treating not-for-profit as meaning “makes no surplus”.
• Listing impacts without judging which dominates.

Official syllabus

Pearson Edexcel International Advanced Subsidiary/Advanced Level in Economics, specification Issue 2, June 2018, Pearson Education Limited: Unit 3, section 3.3.1, items 1 to 3.