Profitability & Liquidity Ratio Analysis
Using financial ratios to assess how well a business generates profit and manages its short-term obligations.
- Calculate gross profit margin, net profit margin, and ROCE from financial data
- Calculate current ratio and acid test ratio and assess liquidity position
- Interpret ratios in context — comparing over time or against industry benchmarks
- Evaluate the limitations of ratio analysis as a tool for decision-making
Why Use Ratios?
Raw figures in accounts are limited on their own — a profit of $1m means little without context. Ratio analysis converts figures into percentages or multiples, allowing:
- Trend analysis: comparing the same business over time
- Competitor benchmarking: comparing to industry peers
- Objective assessment of performance, regardless of firm size
Always interpret ratios in context — state whether the result is good or bad, and why, by comparing to a previous year, a competitor, or an industry average. Never just calculate.
Profitability Ratios
1. Gross Profit Margin (GPM)
Measures what percentage of revenue is left after deducting the direct cost of goods sold.
Interpretation: A GPM of 60% means for every $1 of revenue, $0.60 remains after direct production costs. Higher = better efficiency in production.
Benchmarks (rough — always consider context): Above 50% suggests strong pricing power or low input costs (e.g. luxury goods, software). 20–50% is common for manufacturing and retail. Below 20% signals severe price competition or rising costs, making it difficult to cover fixed expenses.
2. Profit Margin
Measures what percentage of sales revenue remains as profit after direct and operating costs (before interest and tax).
Interpretation: A lower profit margin than gross margin shows how much is consumed by overheads. A widening gap between GPM and profit margin signals high indirect costs.
Benchmarks (rough — always consider context): Above 15% indicates high operational efficiency (e.g. tech, high-value services). 5–15% is sustainable across most stable industries. Below 5% leaves very little buffer against cost changes and signals potential overhead issues.
3. Return on Capital Employed (ROCE)
Measures how efficiently a business uses its capital to generate profit. Often called the most important profitability ratio.
Where: Capital Employed = Non-current Liabilities + Equity (equivalently: Total Assets − Current Liabilities)
Interpretation: Compare to the firm's cost of capital or market interest rates plus a risk premium. If ROCE falls below what investors could earn elsewhere with similar risk, the business is not generating sufficient returns on the capital invested.
Strategies to Improve Profitability Ratios
| Strategy | Effect | Risk/Limitation |
|---|---|---|
| Increase selling prices | ↑ Revenue, ↑ GPM and NPM | May reduce sales volume |
| Reduce cost of goods sold | ↑ GPM directly | May compromise quality |
| Cut overheads / operating costs | ↑ NPM | May affect staff or service quality |
| Improve asset utilisation | ↑ ROCE | Requires investment in management |
| Sell underperforming assets | ↓ Capital employed → ↑ ROCE | Reduces productive capacity |
Liquidity Ratios
Liquidity ratios measure a business's ability to meet its short-term obligations — to pay its bills as they fall due.
1. Current Ratio
Compares all current assets to all current liabilities.
Benchmark: 1.5:1 to 2:1 is generally optimal — enough safety without leaving too much idle in current assets. Above 2.5:1 may suggest excess cash or stock that could be deployed more productively. Below 1:1 means the business cannot cover its current liabilities.
2. Acid Test Ratio (Quick Ratio)
A stricter measure that excludes stock/inventory, since stock may not be quickly convertible to cash.
Benchmark: ≥1:1 is the target. 0.8:1 to 1:1 is tight but manageable with careful cash management. Below 0.5:1 suggests serious insolvency risk.
If a business has a healthy current ratio but a poor acid test, it suggests the business is holding excessive stock that may be hard to sell quickly.
Strategies to Improve Liquidity
| Strategy | Effect | Limitation |
|---|---|---|
| Reduce stock levels (lean inventory) | Frees up cash | Risk of stockouts; disrupts production |
| Improve debtor collection (chase debtors faster) | Cash arrives sooner | May damage customer relationships |
| Negotiate longer credit with suppliers | Delays cash outflows | May damage supplier relationships |
| Sell assets (sale and leaseback) | Immediate cash injection | Ongoing lease payments; no longer owns asset |
| Arrange an overdraft facility | Short-term cash buffer | High interest; repayable on demand |
| Inject new capital (share issue / loan) | Increases current assets | Dilution or interest cost |
Key Terms
- GPM = (Gross profit ÷ Revenue) × 100
- Profit margin = (Profit before interest and tax ÷ Sales revenue) × 100
- ROCE = (Profit before interest and tax ÷ Capital employed) × 100
- Current ratio = Current assets ÷ Current liabilities (ideal ~2:1)
- Acid test = (Current assets − Stock) ÷ Current liabilities (ideal ~1:1)
- Always interpret ratios against previous years, competitors, or benchmarks
- Improving profitability and improving liquidity can sometimes conflict
Revenue: $800,000 | Cost of Goods Sold: $320,000 | Operating expenses: $180,000
Capital employed: $1,200,000 [9 marks]
Show answer
Gross Profit = $800,000 − $320,000 = $480,000
GPM = ($480,000 ÷ $800,000) × 100 = 60% — for every $1 of revenue, $0.60 remains after direct costs. This is strong; typical for service or high-margin businesses.
Operating Profit = $480,000 − $180,000 = $300,000
NPM = ($300,000 ÷ $800,000) × 100 = 37.5% — overheads consume 22.5 percentage points of the gross margin. Worth investigating if this has worsened over time.
ROCE = ($300,000 ÷ $1,200,000) × 100 = 25% — well above typical bank interest rates, suggesting good use of capital.
Common mistake: Using net profit after tax instead of profit before interest and tax (PBIT) for profit margin and ROCE. The IB formula sheet specifies profit before interest and tax for both ratios. Check which profit figure the question specifies and be consistent.
Current assets: $240,000 | Stock: $90,000 | Current liabilities: $150,000
Calculate (a) the current ratio and (b) the acid test ratio. Assess the company's liquidity position. [6 marks]
Show answer
(a) Current ratio = $240,000 ÷ $150,000 = 1.6:1
(b) Acid test = ($240,000 − $90,000) ÷ $150,000 = $150,000 ÷ $150,000 = 1.0:1
Assessment: The current ratio of 1.6 is below the ideal 2:1 but not alarming. The acid test of exactly 1:1 is adequate — the business can just cover its current liabilities without relying on stock. The gap between the two ratios ($90k in stock) suggests the business is carrying significant inventory. If stock is slow-moving, liquidity could deteriorate.
Common mistake: Forgetting to subtract stock when calculating the acid test. The acid test deliberately excludes stock because it may not be quickly convertible to cash. If your acid test equals your current ratio, you've forgotten this step.
Using the financial statements below, calculate all five ratios (GPM, NPM, ROCE, current ratio, acid test) and interpret each result.
Statement of Profit or Loss (year ended 31 Dec 2024): Sales Revenue: $3,200,000 | Cost of Sales: $2,000,000 | Admin Salaries: $400,000 | Rent & Utilities: $180,000 | Marketing: $120,000 | Depreciation: $50,000 | Interest: $40,000 | Tax (20%): calculated
Statement of Financial Position (31 Dec 2024): Non-current assets (net): $1,200,000 | Inventory: $420,000 | Debtors: $260,000 | Cash: $220,000 | Trade Creditors: $360,000 | Bank Overdraft: $90,000 | Long-term borrowings: $500,000 | Share Capital: $972,000 | Retained Earnings: calculated [10 marks]
Show answer
P&L workings:
Gross Profit = $3,200,000 − $2,000,000 = $1,200,000
Total Operating Expenses = $400k + $180k + $120k + $50k = $750,000
PBIT (Operating Profit) = $1,200,000 − $750,000 = $450,000
PBT = $450,000 − $40,000 = $410,000 | Tax = $82,000 | Profit for year = $328,000
Balance sheet workings:
Total CA = $420k + $260k + $220k = $900,000
Total CL = $360k + $90k = $450,000
Capital Employed = Long-term liabilities + Equity = $500,000 + ($972k + $178k) = $1,650,000
GPM = ($1,200,000 ÷ $3,200,000) × 100 = 37.5% — for every $1 of sales, $0.375 remains after direct costs. Reasonable but indicates high input costs (62.5% CoS ratio).
NPM (PBIT) = ($450,000 ÷ $3,200,000) × 100 = 14.1% — overheads consume 23 percentage points of gross margin. Worth investigating whether overhead costs can be reduced.
ROCE = ($450,000 ÷ $1,650,000) × 100 = 27.3% — strong return on capital employed; well above typical borrowing rates.
Current Ratio = $900,000 ÷ $450,000 = 2.0:1 — exactly at the 2:1 benchmark. Healthy.
Acid Test = ($900,000 − $420,000) ÷ $450,000 = $480,000 ÷ $450,000 = 1.07:1 — adequate. The significant inventory ($420k) is the main reason the current ratio is 2:1 but acid test is only 1.07:1.
Common mistake: Calculating capital employed as just equity, or just non-current liabilities. Capital employed = non-current liabilities + equity (or equivalently: total assets − current liabilities). Including current liabilities in the denominator is a frequent error that understates ROCE.
(a) A fall in current ratio means the business is unprofitable.
(b) If ROCE increases, profits must have risen.
(c) Ratios must be interpreted over time or against industry averages to be useful.
(d) A high acid test ratio is always good for the business.
(e) Gross profit margin and profit margin measure the same thing.
(f) A business with a ROCE of −3% is definitely performing poorly, regardless of its industry. [12 marks]
Show answer
(a) False. Liquidity (current ratio) relates to cash position, not profitability. A business can be profitable but have poor liquidity if cash is tied up in stock or debtors.
(b) False. ROCE can also rise if capital employed decreases (e.g. selling assets reduces the denominator) even if profits are unchanged.
(c) True. A ratio in isolation has no context. Is 15% GPM good? Depends on the industry. Is it trending up or down? Time series and industry benchmarks are essential.
(d) False. Excessively high liquidity means cash is sitting idle rather than being invested productively. Some level of liquidity is needed, but too much is inefficient use of capital.
(e) False. GPM measures production efficiency (revenue after direct costs only). NPM measures overall operational efficiency (after all costs including overheads). A business with a high GPM but low NPM has high overheads.
(f) Partly true / False. A negative ROCE is generally a warning sign, but not always "definitely poor." A business investing heavily in growth (e.g. a tech start-up, or a company in an early investment phase) may have negative ROCE temporarily while building future capacity. Context is essential.
Common mistake: Treating ratios as absolute verdicts. In exam answers, avoid statements like "a current ratio of 1.5 means the business is in trouble." Always qualify: "…this may suggest liquidity pressure, depending on the industry norm and trend over time."