current ratio: calculation and interpretation

Cambridge IGCSE/A‑Level Business (9609) – Complete Syllabus Notes


1 Business & Its Environment (AS)

1.1 Enterprise & Entrepreneurship

  • Definition of a business: an organisation that combines resources (factors of production) to produce goods or services for profit.
  • Factors of production: land, labour, capital, entrepreneurship.
  • Opportunity cost: the benefit foregone by choosing one alternative over another.
  • Adding value: transformation of inputs into outputs that are worth more than the sum of the inputs.
  • Entrepreneurial traits: risk‑taking, innovation, vision, determination, resilience.
  • Business plans: purpose, elements (executive summary, market analysis, marketing mix, operations, finance) and limitations (uncertainty, bias).

1.2 Business Objectives & Ownership Forms

  • Primary objective: profit maximisation / wealth creation for shareholders.
  • Secondary objectives (may conflict with profit): growth, market share, survival, corporate social responsibility (CSR), employee welfare, environmental sustainability.
  • Economic sectors: primary, secondary, tertiary, quaternary.
  • Ownership structures & liability:
    FormKey FeaturesLiability
    Sole traderOne owner, full controlUnlimited
    PartnershipTwo or more owners, shared controlUnlimited (unless limited partnership)
    Private limited company (Ltd)Separate legal entity, shares not publicly tradedLimited to amount unpaid on shares
    Public limited company (PLC)Shares traded on a stock exchangeLimited
    FranchiseRight to use brand & business modelLimited to franchise agreement
    Co‑operativeMember‑owned, democratic controlLimited
    Joint ventureTwo or more firms share resources for a specific projectLimited to contribution
    Social enterprisePrimary aim is social/environmental benefit; profit is reinvestedVaries

1.3 Size, Growth & Stakeholders

  • Measuring size: turnover, number of employees, total assets, market share.
  • Advantages/disadvantages of small/family businesses: flexibility & personal service vs. limited finance & succession risk.
  • Growth strategies:
    • Organic (internal) growth – new products, market penetration.
    • Inorganic (external) growth – mergers, acquisitions, joint ventures.
  • Stakeholder categories:
    • Internal – owners/shareholders, directors, managers, employees.
    • External – customers, suppliers, creditors, government, local community, trade unions, NGOs.
  • Stakeholder rights & responsibilities: e.g., employees’ right to safe work vs. employer’s duty to provide it.
  • Conflict management: negotiation, compromise, stakeholder analysis matrix (interest vs. power).

1.4 Business Structure, Size & CSR

  • Organisational structures: functional, divisional, matrix, flat, networked – impact on communication, decision‑making speed and flexibility.
  • Corporate Social Responsibility (CSR): ethical, legal, economic, philanthropic responsibilities; triple‑bottom‑line (people, planet, profit).
  • SMART objectives: Specific, Measurable, Achievable, Relevant, Time‑bound.
  • Link between mission, aims, strategy & tactics: mission → long‑term aims → strategic options → operational tactics.

1.5 External Environment (PESTLE)

  • Political‑Legal: stability, tax policy, regulation, trade restrictions.
  • Economic: inflation, interest rates, exchange rates, economic growth, unemployment.
  • Social‑Demographic: population age, lifestyle trends, cultural attitudes, education levels.
  • Technological: R&D, automation, e‑commerce, ICT advances.
  • Environmental: sustainability, climate change legislation, resource scarcity.
  • International: global competition, export/import barriers, multinational operations.
  • Impact on decision‑making: businesses must scan, anticipate change and adapt strategy (e.g., product diversification, market entry, cost control).

2 Human Resource Management (AS)

2.1 Purpose & Core Functions of HRM

  • Recruitment, selection & induction.
  • Training & development (induction, on‑the‑job, off‑the‑job, e‑learning).
  • Performance management & appraisal (KPIs, 360° feedback).
  • Reward & motivation (financial: salary, bonuses; non‑financial: recognition, career progression).
  • Employee relations (trade unions, collective bargaining, grievance procedures).
  • Health, safety & wellbeing (risk assessments, ergonomics, stress management).
  • Workforce planning (forecasting demand, skills gap analysis, succession planning).

2.2 Motivation Theories & Practical Motivators

  • Classical: Taylor’s Scientific Management (efficiency), Mayo’s Hawthorne Studies (social needs).
  • Behavioural: Maslow’s Hierarchy of Needs, Herzberg’s Two‑Factor Theory (hygiene vs. motivators).
  • Contemporary: McClelland’s Need Theory (achievement, affiliation, power), Vroom’s Expectancy Theory (expectancy × instrumentality × valence).
  • Practical motivators:
    • Financial – pay rise, profit‑share, commission.
    • Non‑financial – job enrichment, flexible working, recognition awards, career development.

2.3 Management Functions & Styles

  • Fayol’s 14 Functions: planning, organising, commanding, coordinating, controlling, etc.
  • Mintzberg’s Managerial Roles: interpersonal, informational, decisional.
  • Leadership styles:
    StyleKey CharacteristicsWhen Effective
    AutocraticClear direction, tight controlCrisis, routine tasks
    DemocraticConsultation, participationCreative work, skilled teams
    Laissez‑faireMinimal supervisionHighly skilled, self‑motivated staff
    PaternalisticLeader looks after staff welfareFamily‑run firms
    Theory X / Theory YAssumptions about employee motivationGuides management approach

3 Marketing (AS)

3.1 Role of Marketing & Market Types

  • Identify and satisfy customer needs profitably.
  • Creates value, builds brand equity, supports market growth.
  • Market types: consumer vs. industrial, local vs. national vs. international, mass market vs. niche market.
  • Orientation: product‑oriented, sales‑oriented, market‑oriented, societal‑marketing.

3.2 Market Research & Segmentation

  • Primary research: surveys, interviews, focus groups, observations – provides current, specific data.
  • Secondary research: published reports, statistics, internet – cheaper, broader.
  • Sampling: random, stratified, convenience – impacts reliability & validity.
  • Segmentation criteria:
    BasisExample
    DemographicAge, gender, income
    GeographicRegion, climate
    PsychographicLifestyle, personality
    BehaviouralUsage rate, loyalty
  • Targeting & Positioning (STP): select segment(s) → decide on market positioning statement → design marketing mix.

3.3 Marketing Mix (4 Ps) & Product Strategies

ElementKey Decisions & Examples
ProductFeatures, quality, branding, packaging, warranty, life‑cycle stage; product line depth, product mix breadth.
PricePricing objectives (profit, market share), strategies (penetration, skimming, price discrimination, dynamic, psychological), discounts, credit terms.
PlaceDistribution channels (direct, indirect, intensive, selective, exclusive), logistics, retail formats, e‑commerce, channel power.
PromotionAdvertising, sales promotion, public relations, personal selling, direct marketing, digital/social media, branding.
  • Product Life‑Cycle (PLC): introduction, growth, maturity, decline – each stage requires different marketing mix adjustments.
  • Boston (BCG) Matrix: Stars, Cash Cows, Question Marks, Dogs – helps allocate resources.

4 Operations Management (AS)

4.1 Transformational Process & Production Methods

  • Inputs → Process → Outputs – the core transformation.
  • Types of operations:
    • Capital‑intensive vs. labour‑intensive.
    • Job production (customised), batch production (small runs), flow production (continuous), mass‑customisation.
  • Change‑over time: set‑up, cleaning, adjustment – impacts flexibility and cost.

4.2 Efficiency, Capacity Utilisation & Quality

  • Productivity = Output ÷ Input (e.g., units per labour‑hour).
  • Capacity utilisation = (Actual output ÷ Maximum possible output) × 100 %.
    • High utilisation → economies of scale but risk of bottlenecks.
    • Low utilisation → excess idle capacity, higher unit costs.
  • Quality management techniques: Total Quality Management (TQM), ISO standards, Six Sigma, Kaizen.
  • Lean production & Just‑In‑Time (JIT): minimise waste, reduce inventory holding.

4.3 Inventory Management & Outsourcing

  • Inventory types: raw materials, work‑in‑process (WIP), finished goods.
  • Economic Order Quantity (EOQ):

    EOQ = √(2DS / H) where D = annual demand, S = ordering cost per order, H = holding cost per unit per year.

  • Reorder point (ROP): ROP = (Average daily usage × Lead time) + Safety stock.
  • Outsourcing decisions – “4 Cs”: Cost, Control, Capability, Commitment.

5 Finance & Accounting (AS)

5.1 Sources of Finance

SourceNatureTypical UseAdvantagesDisadvantages
Retained profitsInternal, long‑termExpansion, R&DNo interest, no dilutionLimited by profitability
Bank overdraftExternal, short‑termWorking‑capital gapsFlexible, quick accessHigh interest, repayment on demand
Debentures / LoansExternal, long‑termPlant & equipmentFixed interest, no ownership lossRepayment obligation
Equity (share issue)External, long‑termLarge projects, acquisitionsNo repayment, spreads riskDilutes ownership, dividend expectations
Trade creditExternal, short‑termPurchasing inventoryFree finance if paid on timeMay affect supplier relationships

5.2 Liquidity Ratios (Section 10.2)

Current Ratio

Formula: Current Ratio = Current Assets ÷ Current Liabilities

Interpretation:

  • 1.5 – 2.0 – generally healthy (industry dependent).
  • >2.0 – strong liquidity but may indicate excess idle assets.
  • <1.0 – potential short‑term solvency problem.
Acid‑Test (Quick) Ratio

Formula: Acid‑Test Ratio = (Current Assets – Inventory) ÷ Current Liabilities

Removes inventory because it is often the least liquid current asset.

Cash Ratio

Formula: Cash Ratio = (Cash & Cash Equivalents) ÷ Current Liabilities

Most conservative measure – shows ability to meet current liabilities with cash alone.

Worked Example (All Three Ratios)
Item£
Cash & cash equivalents30,000
Trade receivables25,000
Inventory20,000
Short‑term investments5,000
Total Current Assets80,000
Trade payables40,000
Short‑term borrowings15,000
Accrued expenses5,000
Total Current Liabilities60,000
Current Ratio80,000 ÷ 60,000 = 1.33
Acid‑Test Ratio(80,000 – 20,000) ÷ 60,000 = 1.00
Cash Ratio30,000 ÷ 60,000 = 0.50

5.3 Cash‑Flow Forecasting

  • Project cash inflows (sales receipts, loan proceeds, asset sales) and outflows (payments to suppliers, wages, tax, interest).
  • Use a cash‑flow statement: Opening balance + Inflows – Outflows = Closing balance.
  • Positive closing balance each period = adequate liquidity; a negative balance signals need for financing or cost reduction.
  • Scenario analysis (best, most likely, worst case) helps manage risk.

5.4 Costing & Contribution Analysis

  • Fixed costs: unchanged with output (e.g., rent, salaries).
  • Variable costs: vary directly with output (e.g., raw material, direct labour).
  • Contribution per unit: Selling price – Variable cost per unit.
  • Total contribution: Contribution per unit × Quantity sold.
  • Contribution margin ratio = (Contribution ÷ Sales) × 100 % – useful for pricing decisions.

5.5 Break‑Even Analysis

Break‑Even Point (units) = Fixed Costs ÷ Contribution per unit

Item£
Fixed costs120,000
Selling price per unit30
Variable cost per unit18
Contribution per unit12
Break‑Even (units)120,000 ÷ 12 = 10,000 units

Margin of safety (%) = (Actual sales – Break‑even sales) ÷ Actual sales × 100 %.

5.6 Budgeting & Variance Analysis

  • Budgets: sales, production, cash, master – coordinate plans across departments.
  • Variance: Variance = Actual – Budgeted.
    • Favourable (F) – result better than budget (e.g., higher profit, lower cost).
    • Unfavourable (U) – result worse than budget.
  • Investigate significant variances (materiality, root‑cause analysis) to improve control.

6 External Influences on Business Activity (A‑Level)

PESTLE Framework (Expanded)

FactorKey Issues for Business
Political‑LegalGovernment stability, taxation, regulation, trade policies, health & safety legislation.
EconomicInflation, interest rates, exchange rates, economic growth, consumer confidence, unemployment.
Social‑DemographicPopulation age structure, lifestyle trends, cultural attitudes, education, health.
TechnologicalAutomation, R&D, e‑commerce, ICT, intellectual property.
EnvironmentalSustainability, carbon taxes, waste disposal, resource scarcity, climate change legislation.
InternationalGlobal competition, export/import barriers, exchange‑rate volatility, multinational operations.

Impact on Decision‑Making

  • Scanning the environment → identifying opportunities/threats.
  • Using tools such as SWOT, PESTLE, Porter’s Five Forces to evaluate strategic options.
  • Adapting strategy (e.g., product diversification, market development, cost leadership) to mitigate threats and exploit opportunities.

7 Business Strategy (A‑Level)

Strategic Analysis Tools

  • SWOT: internal Strengths & Weaknesses vs. external Opportunities & Threats.
  • PEST / PESTLE: macro‑environmental analysis.
  • Porter’s Five Forces: industry rivalry, threat of new entrants, threat of substitutes, buyer power, supplier power.
  • Ansoff Matrix: market penetration, market development, product development, diversification.
  • BCG Growth‑Share Matrix: Stars, Cash Cows, Question Marks, Dogs – guides resource allocation.

Corporate Planning & Change Management

  • Strategic planning steps: vision → mission → SMART objectives → strategic options → implementation plan → monitoring & review.
  • Change models:
    • Lewin’s Unfreeze‑Change‑Refreeze.
    • Kotter’s 8‑step process (create urgency, form coalition, vision, communicate, empower, generate short‑term wins, consolidate, anchor).
  • Managing resistance: clear communication, employee participation, training, support, incentives.

8 Human Resource Management (A‑Level)

Organisational Structures & Impact

  • Functional: departments by function – clear expertise, slow decision‑making.
  • Divisional: by product/region – quicker response, duplication of functions.
  • Matrix: dual reporting – flexibility, potential conflict.
  • Flat: few hierarchical levels – fast communication, limited control.
  • Networked: core firm plus external partners – agility, reliance on partners.

Leadership & Management Styles (A‑Level)

  • Transactional leadership: focus on supervision, performance, reward‑punishment.
  • Transformational leadership: inspires, motivates, fosters innovation.
  • Strategic HRM: aligning HR policies (recruitment, training, reward) with overall business strategy.
  • Impact of IT/AI: recruitment algorithms, performance dashboards, remote working platforms, data‑driven talent analytics.

Employee Relations & Motivation (Advanced)

  • Trade unions & collective bargaining: negotiation of wages, conditions, grievance procedures.
  • Industrial action: strikes, lock‑outs – impact on productivity and public image.
  • Motivation in modern workplaces: work‑life balance, corporate culture, employee empowerment, career pathways.
  • Legal framework: employment law, health & safety regulations, equality legislation.

9 Finance & Accounting (A‑Level – Expanded)

Advanced Ratio Analysis

  • Liquidity ratios: current, acid‑test, cash ratio (see Section 5.2).
  • Gearing ratio: Debt ÷ (Debt + Equity) – indicates financial risk.
  • Profitability ratios: Gross profit margin, net profit margin, return on capital employed (ROCE).
  • Efficiency ratios: Inventory turnover, receivables turnover, asset turnover.

Cash‑Flow Forecasting (Advanced)

  • Include cash inflows from non‑operating activities (sale of assets, investment income).
  • Use rolling 12‑month forecast to capture seasonal variation.
  • Stress‑test the forecast against interest‑rate rises or exchange‑rate movements.

Budgeting Techniques

  • Zero‑based budgeting: each expense justified from scratch.
  • Rolling budgets: continuously updated each month/quarter.
  • Flexible budgets: adjust for actual activity levels.

Variance Analysis (Extended)

Variance TypeFormulaInterpretation
Sales price variance(Actual price – Budgeted price) × Actual quantityFavourable if actual price > budgeted.
Sales volume variance(Actual quantity – Budgeted quantity) × Budgeted priceFavourable if actual quantity > budgeted.
Material price variance(Actual price – Standard price) × Actual quantityShows purchasing efficiency.
Labour efficiency variance(Actual hours – Standard hours) × Standard rateIndicates productivity.

10 Key Formulas & Quick Reference

TopicFormulaTypical Use
Current RatioCurrent Assets ÷ Current LiabilitiesAssess short‑term liquidity.
Acid‑Test Ratio(Current Assets – Inventory) ÷ Current LiabilitiesLiquidity excluding least‑liquid asset.
Cash RatioCash & Cash Equivalents ÷ Current LiabilitiesMost conservative liquidity test.
EOQ√(2DS / H)Optimal order size to minimise total inventory cost.
Break‑Even (units)Fixed Costs ÷ (Selling price – Variable cost per unit)Determine sales needed to cover all costs.
Contribution Margin Ratio(Selling price – Variable cost) ÷ Selling price × 100 %Pricing and profit planning.
Gearing RatioTotal Debt ÷ (Total Debt + Equity)Measure financial risk.
ROCEOperating Profit ÷ Capital Employed × 100 %Assess efficiency of capital use.

11 Examples & Practice Questions

Example 1 – Current Ratio Interpretation

Company A has current assets £150,000 and current liabilities £90,000.

Current Ratio = 150,000 ÷ 90,000 = 1.67.

Interpretation: The ratio falls within the 1.5–2.0 “healthy” band, suggesting adequate short‑term liquidity. If the industry average is 2.5, the company may be relatively less liquid than competitors and could consider improving cash management.

Example 2 – EOQ Calculation

Annual demand for a product = 12,000 units.
Ordering cost per order = £75.
Holding cost per unit per year = £2.5.

EOQ = √(2 × 12,000 × 75 ÷ 2.5) = √(1,800,000 ÷ 2.5) = √720,000 ≈ 848 units per order.

Practice Question

A firm has the following figures: Cash £20,000, Trade receivables £30,000, Inventory £25,000, Trade payables £35,000, Short‑term borrowings £10,000, Accrued expenses £5,000.

  1. Calculate the Current Ratio, Acid‑Test Ratio and Cash Ratio.
  2. Interpret each ratio and suggest one action the firm could take to improve its liquidity.

12 Summary Checklist for Exam Revision

  • Know the definition, purpose and components of each major business function (HRM, Marketing, Operations, Finance).
  • Be able to calculate and interpret the three key liquidity ratios, EOQ, break‑even point and contribution margin.
  • Understand the advantages, disadvantages and typical uses of each source of finance.
  • Remember the four growth strategies and the nine strategic analysis tools.
  • Be able to explain the impact of each PESTLE factor on business decisions.
  • Practice drawing and labeling organisational structures and the Boston Matrix.
  • Review case‑study examples that illustrate stakeholder conflict, CSR, and change‑management processes.

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