OCR GCSE Economics: Competition, monopoly, production, costs and scale (J205)

This guide covers sections 2.5 (Competition) and 2.6 (Production) of the OCR GCSE (9-1) Economics specification (J205), Version 2.0, for first assessment in 2019. Both sit under “The role of markets and money”, which the specification’s content overview places in component J205/01. The specification is not tiered, so everything here is common content. Every firm, town, country and figure below is invented for practice and is illustrative only.

Pair this guide with the revision notes and the practice questions. For the rest of the topic see The Role of Markets and Money and exam preparation. The OCR GCSE Economics hub, the checklist and the free diagnostics show what to revise next.

Scope at a glance

Section	Skill	Command word
2.5	Explain competition and why producers compete	Explain
2.5	Analyse how competition affects price	Analyse
2.5	Evaluate the impact of competition on producers and consumers	Evaluate
2.5	Explain monopoly and oligopoly and how they differ from competitive markets	Explain
2.6	Explain the role of producers: individuals, firms, government	Explain
2.6	Evaluate the importance of production and productivity	Evaluate
2.6	Calculate and explain total cost, average cost, total revenue, average revenue, profit and loss	Calculate
2.6	Evaluate cost, revenue, profit and loss, including effects on profit and supply	Evaluate
2.6	Explain economies of scale	Explain

The specification defines “analyse” as presenting logical chains of reasoning, and “evaluate” as weighing up both sides or comparing alternatives and reaching a supported judgement. Its quantitative skills list includes averages (including cost) and totals (including revenue, costs and profit).

2.5 Competition

Why producers compete

Competition is rivalry between producers selling to the same customers. In a market economy firms are free to enter, expand or leave, so they compete to:

• earn profit, the reward for taking risks;
• win market share, the percentage of total sales in the market;
• survive, because a firm that loses customers may make a loss and close;
• grow, so that it can later benefit from economies of scale.

Producers compete on price and also on non-price factors such as quality, design, service, delivery speed and advertising.

How competition affects price

More competition usually means lower prices, for two linked reasons. Firms cut prices to win customers, and new firms entering the market increase supply.

Worked example: entry into a market. In Town B (invented), garden herb pots sell in a market with this demand and supply schedule per day. Three new stalls then enter, so supply rises by 200 pots at every price.

Price (£)	Quantity demanded	Old supply	New supply
5	750	450	650
6	700	500	700
7	650	550	750
8	600	600	800
9	550	650	850

• Old equilibrium: demand equals supply at £8 and 600 pots.
• New equilibrium: demand equals supply at £6 and 700 pots.
• Price change = (6 − 8) ÷ 8 × 100 = −25%. Quantity change = (700 − 600) ÷ 600 × 100 = +16.7%.
• At £8 the new supply is 800 against demand of 600, a surplus of 200, which pushes sellers to cut price until the market clears at £6.

In a diagram, the supply curve shifts right and the equilibrium moves down the demand curve to a lower price and a higher quantity. Name both curves and both equilibrium points when you describe it.

The impact on producers and consumers

	Likely benefits	Likely costs
Consumers	Lower prices, more choice, better quality and service	Some firms may cut corners to keep costs down; failed firms may leave customers without after-sales support
Producers	Pressure to cut costs, innovate and improve	Lower profit margins, loss of market share, possible exit

To evaluate, weigh these and reach a judgement. A strong judgement depends on something specific: how many firms there are, how easily customers can switch, whether firms can cut costs without lowering quality, and whether rivals survive. Competition tends to help consumers most when switching is easy. It can hurt producers most when their costs are already high.

Monopoly, oligopoly and competitive markets

A competitive market has many producers, no one of which can set the price alone, and entry is relatively easy. A monopoly has a single producer, or one so dominant that it faces little rivalry. An oligopoly has a handful of big firms that between them make most of the sales.

Feature	Competitive	Oligopoly	Monopoly
Number of firms	Many	A few large ones	One (or one dominant)
Barriers to entry	Low	High	Very high
Price setting	Takes the market price	Influenced by rivals’ moves	Has most control
Choice for consumers	Wide	Limited	Little or none

Barriers to entry include high start-up costs, patents, control of a key resource and the strength of established brands.

Worked example: concentration. In Region C (invented) four firms sell mobile data. Sales are Firm 1 £40m, Firm 2 £30m, Firm 3 £20m and Firm 4 £10m, total £100m. Firm 1’s market share is 40 ÷ 100 × 100 = 40%, and the top two firms together hold 70%. A market where a few firms hold most of the sales is an oligopoly.

Oligopoly firms are interdependent, so every pricing decision has to allow for a likely reaction from rivals. Suppose two firms each sell 5,000 units at £10 with a unit cost of £6. Each earns (10 − 6) × 5,000 = £20,000. If one cuts to £9 and the other matches, each sells 5,500 units and earns (9 − 6) × 5,500 = £16,500. Both are worse off by £3,500, so oligopolists often avoid price wars and compete on quality or advertising instead. A monopoly faces no such rival, which can mean higher prices and less choice, though it may also gain economies of scale.

2.6 Production

The role of producers

Producers use land, labour, capital and enterprise as inputs to supply goods and services. Individuals produce as self-employed people or sole traders, and workers are producers too because their labour creates output. Firms are the main producers in a market economy, responding to consumer demand to make a profit. The government produces some goods and services itself, such as state education or roads, and can influence production through rules, taxes and subsidies.

Production and productivity

Production is the amount of goods and services a firm or economy produces in total. Productivity measures how much each worker, hour or machine contributes, for example output per worker.

Worked example. Harbour Tools (invented) makes 12,000 tools a year with 400 workers.

Year	Output	Workers	Output per worker
1	12,000	400	30
2	13,800	460	30
3	14,400	400	36

• Year 2: output rises 15% but productivity is unchanged, because the firm only added workers.
• Year 3: new machines raise productivity by (36 − 30) ÷ 30 × 100 = 20%.
• With wages of £18,000 per worker, labour cost per tool falls from 18,000 ÷ 30 = £600 to 18,000 ÷ 36 = £500, a fall of 16.7%.

Evaluating importance. Higher production raises incomes, jobs and tax revenue. Higher productivity lets firms cut costs or pay more, helps them compete in export markets and raises living standards. Limits: output can rise through extra inputs without productivity improving; gains may cost jobs if machines replace workers; and more production can harm the environment or use up resources. A balanced answer says which effect is larger in the context given.

Costs, revenue and profit

Term	Meaning	Formula
Fixed cost	Does not change with output (rent)
Variable cost	Changes with output (materials)
Total cost (TC)	All costs added together	variable cost + fixed cost
Average cost (AC)	Cost per unit	TC ÷ output
Total revenue (TR)	Money from sales	price × quantity
Average revenue (AR)	Revenue per unit, equal to price	TR ÷ quantity
Profit	When TR is above TC	TR − TC
Loss	When TC is above TR	TC − TR

Worked example. Kiln Corner (invented) makes mugs with fixed cost £600 a week and sells each at £9.

Mugs	Variable cost (£)	TC (£)	AC (£)	TR (£)	Profit (£)
50	300	900	18.00	450	−450
100	520	1,120	11.20	900	−220
150	760	1,360	9.07	1,350	−10
200	1,040	1,640	8.20	1,800	160
250	1,400	2,000	8.00	2,250	250
300	1,860	2,460	8.20	2,700	240

At 200 mugs, TC = 600 + 1,040 = £1,640, AC = 1,640 ÷ 200 = £8.20, TR = 9 × 200 = £1,800 and profit = 1,800 − 1,640 = £160. At 150 mugs the shop makes a loss of £10. Profit is highest at 250 mugs, where AC is also lowest.

Why costs, revenue and profit matter

Profit rewards enterprise, pays for investment and signals to other firms that a market is worth entering. Losses signal that a firm must cut costs, raise revenue or leave. A firm can survive a loss for a time, but not indefinitely.

Costs and revenue also drive supply:

• A higher price with unchanged costs raises profit per unit, so firms supply more: a movement along the supply curve.
• Higher costs cut profit and shift supply left. If Kiln Corner’s variable costs rise 10%, then at 250 mugs variable cost becomes 1,400 × 1.1 = £1,540, TC £2,140 and profit £110, down 56%.
• Lower costs, from new technology or a subsidy, shift supply right.

Economies of scale

Economies of scale are falls in average cost as a firm increases its scale of production. Main sources:

• Technical: bigger machines and specialised workers raise output per worker.
• Purchasing: bulk buying brings discounts.
• Financial: large firms often borrow more cheaply.
• Managerial: specialist managers can be afforded.
• Marketing: advertising costs are spread over more units.
• Risk-bearing: a firm selling many products can absorb a failure.

Worked example. A candle maker (invented):

Output	TC (£)	AC (£)
1,000	5,000	5.00
4,000	14,000	3.50
8,000	25,600	3.20

From 1,000 to 8,000 candles output rises 700% while AC falls (3.20 − 5.00) ÷ 5.00 × 100 = −36%. Lower AC lets the firm cut price, widen its profit margin or both. The specification lists economies of scale only, but AC does not fall forever: if the same firm’s cost at 16,000 candles is £54,400, AC is £3.40, up from £3.20.

Common errors

• Writing “profit = TR − AC”. Profit is total revenue minus total cost.
• Treating more output as more productivity. Check output per worker.
• Saying competition always helps everyone. Producers can lose.
• Calling a market with a few firms a monopoly. That is an oligopoly.
• Shifting the curve when only price changed. A price change is a movement along the curve.
• Giving a list of benefits with no judgement in an “evaluate” answer.

Official syllabus

OCR GCSE (9-1) Economics (J205), specification Version 2.0 (June 2026), for first assessment in 2019, published by OCR. Sections 2.5 and 2.6.