Financial Analysis

Limitations of Ratio Analysis

Key limitations

• Quantitative data only — ratios are based solely on numerical financial information; they ignore qualitative factors entirely

• Ignores non-financial information, including:

  • Workforce quality (skills, motivation, training, staff turnover)
  • Management effectiveness (objectives, strategy, expertise)
  • Social responsibility (ethical stance, environmental impact)
  • Brand reputation and customer loyalty

• Different accounting policies make inter-business comparisons unreliable:

  • Depreciation method (straight-line vs reducing balance)
  • Judgements about asset useful life, residual value, and % applied
  • Inventory valuation method

• Ignores external factors such as:

  • Inflation — distorts year-on-year comparisons
  • Interest rate changes — affect finance costs and borrowing decisions
  • Economic recession or growth — affects all businesses in the sector

• Two-year comparisons may not reveal underlying trends — a longer time series is needed to identify genuine patterns

• Like-for-like comparisons required — inter-business comparisons are only valid if businesses are similar in size, scope, and industry sector. Data on competitors may be difficult to obtain (especially if not a limited company)

• Past performance ≠ future performance — historical ratios are no guarantee of what will happen going forward

• Overall figures — ratios show aggregate business performance and do not identify strengths and weaknesses of individual departments or product lines

• Window dressing — management may legally manipulate financial information to present the business in the most favourable light, distorting ratio analysis (e.g. delaying purchases until after the year end to improve liquidity ratios)