Pearson Edexcel A Level Economics 9EC0

📈 Pearson Edexcel A Level Economics A Formula Sheet 2026

Every elasticity, macro identity, market structure framework, and development model you need across Themes 1–4 of the Pearson Edexcel A Level Economics A specification (9EC0).

Theme 1 Markets Theme 2 UK Macro Theme 3 Business Behaviour Theme 4 Global Economy

Our formula sheets are free to download — save this one as PDF for offline revision.

Aligned with the latest 2026 syllabus and board specifications. This sheet is prepared to match your exam board’s official specifications for the 2026 exam series.

All the Core Edexcel A Level Economics Formulas in One Place

Edexcel A Level Economics A (9EC0) rewards precise application of formulas, diagrams, and policy frameworks across micro and macro contexts. This 2026 formula sheet condenses every quantitative tool and analytical framework from Themes 1–4 — from elasticities and the multiplier to comparative advantage and the Harrod-Domar model — so you can revise efficiently for Papers 1, 2, and 3.

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Every elasticity formula (PED, YED, XED, PES) with sign interpretation

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Macroeconomic identities — AD, AS, multiplier, accelerator, output gap

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Market structures from perfect competition through to monopoly and contestability

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Global economy frameworks — comparative advantage, Gini, HDI, Harrod-Domar

Theme 1 — Markets & Business Behaviour

Microeconomic foundations: elasticities, surplus, market failure, and intervention.

Elasticities of Demand & Supply

Memorise the formulas and the sign conventions — examiners always test interpretation.

PED

% Δ Quantity demanded ÷ % Δ Price (negative for normal goods)

YED

% Δ Quantity demanded ÷ % Δ Income (positive = normal, negative = inferior, >1 = luxury)

XED

% Δ Quantity demanded of A ÷ % Δ Price of B (positive = substitutes, negative = complements)

PES

% Δ Quantity supplied ÷ % Δ Price (always positive; >1 = elastic)

Always state the sign AND the magnitude when interpreting elasticity values.

Consumer & Producer Surplus

Welfare measures shown geometrically on the demand-supply diagram.

Consumer surplus

Area between the demand curve and the market price (above price, below demand)

Producer surplus

Area between the market price and the supply curve (above supply, below price)

Total welfare

Consumer surplus + Producer surplus (maximised at competitive equilibrium)

Market Failure & Externalities

Where the free market fails to allocate resources efficiently.

Negative externality of production

MSC > MPC → over-production → welfare loss = triangle between MSC and MPC up to Q market

Positive externality of consumption

MSB > MPB → under-consumption → welfare loss = triangle between MSB and MPB up to Q market

Public goods

Non-rivalrous AND non-excludable → free-rider problem → market under-provides

Information asymmetry

Adverse selection (hidden info) and moral hazard (hidden action) → market mis-allocation

Government Intervention in Markets

Tools and unintended consequences.

Indirect taxes (specific or ad valorem) shift S left → revenue = tax × Q traded; incidence depends on PED vs PES
Subsidies shift S right → cost = subsidy × Q traded; benefit shared between consumers and producers
Price ceilings (below equilibrium) → shortages; price floors (above equilibrium) → surpluses

Always evaluate intervention against government failure (info gaps, unintended consequences, regulatory capture).

Theme 2 — The UK Economy: Performance & Policies

Macro objectives, AD/AS, and the policy toolkit.

Aggregate Demand & Aggregate Supply

The core macro identities used in every Theme 2 essay.

AD

AD = C + I + G + (X − M)

Multiplier

k = 1 / (1 − MPC) = 1 / MPS = 1 / (MPS + MPT + MPM)

Accelerator

Investment responds to the rate of change of national income — ΔI = α × ΔY

SRAS

Upward-sloping; shifts with input costs, productivity, indirect taxes, exchange rate

LRAS

Vertical at full-capacity output (classical) or curved (Keynesian) — shifts with quantity/quality of factors

Output gap

Actual GDP − Potential GDP (negative = recessionary, positive = inflationary)

Macroeconomic Indicators

How performance is measured.

Real GDP per capita

(Real GDP ÷ Population) — preferred living-standards measure

Inflation

CPI (consumer price index, weighted basket, excludes housing costs) vs RPI (includes mortgage interest, housing)

Unemployment

ILO survey rate (active job-seekers) vs claimant count (those claiming benefits)

Balance of payments

Current account = Trade in goods + Trade in services + Primary income + Secondary income

Fiscal Policy

Government spending (G) and taxation (T) used to influence AD.

Expansionary: ↑G or ↓T → ↑AD → ↑real GDP & employment (and possibly inflation)
Contractionary: ↓G or ↑T → ↓AD → lower inflation (and possibly lower growth)
Automatic stabilisers (progressive tax + welfare) dampen the cycle without discretionary action

Evaluate fiscal policy using: time lags, crowding out, multiplier size, debt sustainability.

Monetary Policy & Supply-Side Policy

Bank of England tools and structural reform.

Bank Rate ↓ → cheaper borrowing → ↑C and ↑I → ↑AD; weaker £ → ↑(X−M) → ↑AD
Quantitative easing: BoE buys gilts → bank reserves rise → lending capacity ↑ and yields ↓
Supply-side: market-based (deregulation, tax cuts, privatisation) vs interventionist (education, R&D, infrastructure)

Supply-side shifts LRAS right — the only policy that raises non-inflationary growth long-term.

Theme 3 — Business Behaviour & the Labour Market

Costs, revenues, market structures, and the labour market.

Production, Costs & Revenues

Foundations of firm behaviour.

Short-run vs long-run

Short-run: at least one factor fixed → diminishing marginal returns; Long-run: all factors variable → returns to scale

Costs

TC = FC + VC; AC = TC / Q; MC = ΔTC / ΔQ; AC is U-shaped (productive efficiency at its minimum)

Revenues

TR = P × Q; AR = TR / Q = price (demand curve); MR = ΔTR / ΔQ

Profit maximisation

MR = MC (and MC cuts MR from below)

Market Structures

Compare on number of firms, barriers, product, and efficiency.

Perfect competition

Many firms, homogeneous product, no barriers → P = MC = AC in long run; allocatively & productively efficient

Monopolistic competition

Many firms, differentiated product, low barriers → normal profit long run, neither efficient

Oligopoly

Few firms, high concentration → kinked demand curve → price rigidity; collusion (tacit/overt) and game theory (Nash equilibrium)

Monopoly

One dominant firm (≥25% legal definition) → P > MC → allocative inefficiency, but possible dynamic efficiency from supernormal profits

Contestable markets

Low entry/exit costs → hit-and-run entry → firms behave competitively even with few incumbents

Pricing & Price Discrimination

Conditions and types.

Conditions: monopoly power + ability to identify groups with different PEDs + ability to prevent resale

1st degree

Each consumer pays their maximum willingness to pay

2nd degree

Different prices for different quantities (bulk discounts, peak/off-peak)

3rd degree

Different prices to different consumer groups (student, senior, business)

Labour Market & Government Intervention

Wage determination and market failure in labour.

Perfect labour market

Wage set where MRP (= MPP × MR) = supply of labour

Monopsony

Single buyer of labour → wages and employment below competitive level

Trade unions

Can raise wage above equilibrium → may cause unemployment, unless monopsony exists (then can raise both W and L)
Gov intervention: minimum wage, max wage, anti-discrimination law, public sector pay, training/education subsidies

Theme 4 — A Global Perspective

International trade, globalisation, and development economics.

International Trade & Comparative Advantage

Why countries specialise and trade.

Comparative advantage

A country should specialise in goods with the lowest opportunity cost — gains from trade exist if opportunity-cost ratios differ
Pattern of trade affected by: factor endowments, exchange rates, trade blocs, comparative advantage shifts, FDI
Trade protection: tariffs, quotas, subsidies, embargoes, non-tariff barriers (standards, admin)

Exchange Rates & Balance of Payments

How currency movements affect the macro economy.

Floating: determined by demand/supply of currency; Fixed: pegged by central bank intervention
Currency depreciation → exports cheaper, imports dearer → if Marshall-Lerner holds (PEDx + PEDm > 1), trade balance improves (J-curve in short run)
Current account deficit causes: low competitiveness, strong currency, high domestic demand, low savings

Globalisation & Multinationals

Drivers and impacts.

Drivers: lower transport/communication costs, trade liberalisation, capital mobility, MNCs, containerisation
MNC impacts on host country: + jobs, FDI, technology, tax revenue; − transfer pricing, profit repatriation, exploitation, environmental damage
Trade blocs: free trade area → customs union → common market → economic union (EU) → monetary union

Inequality & Development Economics

Measuring and improving living standards.

Lorenz curve

Plots cumulative % of income against cumulative % of population — further from 45° = more unequal

Gini coefficient

0 (perfect equality) to 1 (perfect inequality) — measures area between Lorenz curve and 45° line

HDI

Composite of life expectancy, mean/expected years of schooling, GNI per capita (PPP) — 0 to 1

Lewis dual sector model

Surplus rural labour absorbed by modern industrial sector → drives structural change

Harrod-Domar

g = s / k where s = savings ratio and k = capital-output ratio (ΔK / ΔY)

Evaluate development with the SDGs (since 2015), debt sustainability, role of IMF (stabilisation) and World Bank (long-run development lending).

Diagram Toolkit & Evaluation Frameworks

The diagrams and reasoning patterns examiners reward most.

Must-Draw Diagrams

Demand & Supply (with shifts and intervention) | Externalities (MSC vs MPC, MSB vs MPB) | AD/AS (Keynesian vs classical LRAS)
Cost curves (AC, MC, AVC) | Profit max (MR=MC across all 4 structures) | Lorenz curve | PPF

Evaluation (the 25-mark mark scheme)

Magnitude — how big is the effect? Time period — short vs long run? Assumptions — ceteris paribus, elasticity values?
Stakeholders — who gains, who loses? Counter-arguments? Government failure vs market failure?

Always finish with a clear, justified judgement that links back to the specific question.

How to Use This Formula Sheet

Boost your Cambridge exam confidence with these proven study strategies from our tutoring experts.

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Master the Diagrams

Practise drawing every key diagram (AD/AS, externalities, cost curves, market structures) freehand until you can produce accurate ones in 60 seconds under exam pressure.

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Drill Quantitative Skills

Edexcel A papers test calculation in every paper — practise elasticities, multipliers, percentage changes, and index numbers until they are automatic.

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Build a Real-World Bank

Collect 8–10 contemporary examples per theme (UK Bank Rate decisions, EU policy, MNC case studies). Real-world context separates A* answers from A.

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Evaluate, Don't Just Describe

Edexcel A* essays weigh up arguments — for every analytical point, ask 'in what context might this not hold?' before reaching a justified conclusion.

Formula Sheet FAQ

Quick answers about this free PDF and how to use it for exam revision and active recall.

Is the Pearson Edexcel A Level Economics A Formula Sheet 2026 free to download as a PDF?

Yes. This Tutopiya formula sheet is free to use and you can download it as a PDF from this page for offline revision. There is no payment or account required for the PDF download.

What Economics topics and equations does this formula sheet cover?

This page groups key Economics formulas in one place for revision. Master Pearson Edexcel A Level Economics A (9EC0) with this 2026 formula sheet. Covers Theme 1 markets, Theme 2 UK macro, Theme 3 business behaviour, and Theme 4 global economy with key formulas, diagrams, and policy … Always cross-check with your official syllabus and past papers for your exam session.

Can I use this instead of the official exam formula booklet in the exam?

No. In the exam you must follow only what your exam board allows in the hall—usually the official formula booklet or data sheet where provided. This page is a revision and teaching aid, not a replacement for board-issued materials.

Who is this formula sheet for (Post-Secondary)?

It is written for students preparing for assessments at Post-Secondary in Economics, including classroom revision, homework support, and independent study. Teachers and tutors can also share it as a quick reference.

How should I revise with this formula sheet?

Work through past paper questions, quote the correct formula before substituting values, and check units and notation every time. Pair this sheet with timed practice and mark schemes so you see how examiners expect working to be set out.

Where can I get more help with Economics revision?

Explore Tutopiya’s study tools, past paper finder, and revision checklists linked from our tools hub, or book a trial lesson with a subject specialist for personalised support alongside this formula reference.

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This formula sheet aligns with Pearson Edexcel A Level Economics A (9EC0) specification content for first teaching from 2015 and assessment in 2026.

Always pair quantitative answers with clear interpretation, and use real-world examples to evidence analysis and evaluation.