Article summary
Ratio analysis compares related financial figures to investigate a business's profitability, liquidity, efficiency or financing. A ratio becomes useful when you define its inputs, compare like periods and explain the evidence behind a change. This guide uses one invented business to turn formulas into a short analysis you can reproduce. The figures are practice data, not an investment recommendation.
What are the main types of ratio analysis?
| Type | Question | Example measure |
|---|---|---|
| Liquidity | Can near-term assets support near-term obligations? | Current ratio |
| Profitability | How much profit is generated from revenue? | Operating profit margin |
| Efficiency | How quickly are operating balances converted or used? | Receivables days |
| Solvency and financing | How is the business financed and how much debt risk exists? | Debt-to-equity, with debt defined explicitly |
Select the measure for the question you are investigating. A lender, supplier and equity researcher may need different evidence. A profitable business can still face a cash shortfall, while a high current ratio can include slow inventory or disputed customer invoices. No single result establishes business quality.
Fictional source data: Cedar Supplies
Cedar Supplies is an invented wholesaler. All figures below are INR thousands, both reporting years contain 365 days, and credit revenue excludes cash sales. The practice data has no prepaid expenses or other current assets. Debt means only interest-bearing borrowings for this exercise. Use these definitions consistently rather than mixing alternative formulas.
| Input | Year 1 | Year 2 |
|---|---|---|
| Revenue | 1,000 | 1,200 |
| Credit revenue | 800 | 1,000 |
| Gross profit | 300 | 330 |
| Operating profit | 120 | 120 |
| Current assets | 400 | 480 |
| Inventory | 160 | 240 |
| Current liabilities | 200 | 240 |
| Average trade receivables | 100 | 150 |
| Interest-bearing debt | 200 | 240 |
| Equity | 400 | 480 |
Calculate the ratios before interpreting them
| Measure and formula | Year 1 | Year 2 |
|---|---|---|
| Current ratio = current assets / current liabilities | 400 / 200 = 2.0 times | 480 / 240 = 2.0 times |
| Quick ratio here = (current assets - inventory) / current liabilities | 240 / 200 = 1.2 times | 240 / 240 = 1.0 times |
| Gross margin = gross profit / revenue x 100 | 30.0% | 27.5% |
| Operating margin = operating profit / revenue x 100 | 12.0% | 10.0% |
| Receivables days = average trade receivables / credit revenue x 365 | 45.6 days | 54.8 days |
| Debt-to-equity as defined above = debt / equity | 0.5 times | 0.5 times |
The quick-ratio definition is explicit because practice conventions differ. If a real data set contains prepayments or other assets that cannot promptly meet obligations, investigate whether they belong in the numerator. Also check whether a requested debt ratio includes leases, all liabilities or only borrowings. Record the convention instead of silently changing it between years.
Write an interpretation that goes beyond higher or lower
Cedar's revenue rose by 20%, but operating profit remained INR 120 thousand. Gross margin fell by 2.5 percentage points and operating margin by 2 points. The arithmetic shows weaker margins on the additional sales; it does not identify the cause. Request product mix, selling prices, input costs, exceptional items and operating-expense detail before attributing the movement to poor cost control.
The unchanged current ratio conceals a shift in asset composition. Inventory increased by 50%, while current assets increased by 20%. The quick ratio fell from 1.2 to 1.0. Ask whether inventory is saleable, whether demand is seasonal and when obligations fall due. Calling the business safe merely because its current ratio is 2.0 would overlook those questions.
Receivables days increased by about 9.2 days. Review ageing, customer concentration, credit terms, disputes and receipts after the reporting date. A change in customer mix or agreed terms could explain part of the result. Avoid describing it as proven collection failure without the supporting invoice and payment evidence.
Limitations of ratio analysis
- Year-end balances can hide seasonal pressure; average balances may be more informative when reliable observations exist.
- Accounting policies, acquisitions and one-off items can impair comparisons.
- A zero or negative denominator can make a familiar ratio undefined or misleading.
- Industry context matters: a universal ideal ratio is rarely a sufficient decision rule.
- Ratios omit important qualitative evidence, such as customer disputes, product quality or financing restrictions.
A practice task for your finance portfolio
Create a spreadsheet with separate input, calculation and interpretation sheets. Reproduce every value above, then change Year 2 inventory to 180 while keeping total current assets at 480. The quick ratio becomes 300 / 240 = 1.25 times; the current ratio remains 2.0. Explain how the same current-asset total can support different conclusions about composition. Label the exercise fictional and retain the original inputs so a reviewer can audit your work.
Read the balance-sheet format before choosing ratio inputs
Connect financial statements to analysis
Explore the Finance Operations module within the Masterclass
Sources and calculation scope
ACCA discusses interpreting performance with comparisons and context. CFA Institute groups analytical measures into activity, liquidity, solvency and profitability. The Cedar data, chosen formula conventions, calculations and questions are original educational material. Check the reporting framework and purpose before applying a ratio to a real business.
ACCA: assessing organisation performance
CFA Institute: financial analysis techniques
Is ratio analysis the same as financial statement analysis?
Ratio analysis is one technique within the wider task. A complete review can also examine cash flows, notes, trends, business context and the reliability of the source information.
Does a higher current ratio always mean a stronger business?
No. Check what the assets contain, how quickly they can be realised and when liabilities fall due. Excess or obsolete inventory can increase the ratio without improving cash availability.

