Ratio Analysis: Financial Ratios, Formulas & Examples

Updated 12 Mar 2026Content was accurate at the time of publication

What is ratio analysis?

Ratio analysis is a financial analysis technique that expresses relationships between figures from financial statements as simple metrics. Financial ratios condense balance sheet, profit & loss and cash flow data into comparable indicators of liquidity, profitability, efficiency and solvency so you can judge whether a business is healthy, improving or at risk.

At its core, ratio analysis answers practical questions such as: Can the business pay its short-term bills? Is it generating adequate profit on sales and assets? How leveraged is it? Because ratios are standardized, you can compare across periods, peers and industries. To use ratios effectively you must start with reliable financial data — adjust for one-offs, owner drawings and GST/BAS treatment where required.

Why ratio analysis matters

Ratio analysis translates accounts into managerial and investor insight. Typical uses include:

Performance monitoring: track margins, returns and working capital efficiency to spot deterioration early.
Lending and credit assessment: banks and funders use liquidity, interest coverage and gearing ratios to assess creditworthiness.
Investment analysis: investors examine profitability and return ratios to value a business or share.
Benchmarking and trend analysis: compare to industry norms (e.g., ATO Small Business Benchmarks) and peer companies to identify competitive advantages or weaknesses.
Decision support: inform pricing, inventory policies, capital raising and cost control.

Users range from small business owners and finance managers to accountants, investors and lenders. For operational problems, link ratio signals to cash flow processes such as cash flow management and working capital controls.

How ratio analysis works — data sources and timing

Ratio analysis is only as good as the input data. Primary sources:

Balance sheet and income statement (profit & loss): core for most ratios.
Cash flow statement: essential for cash-based metrics and repayment capacity.
Trial balance, BAS and management accounts: useful for higher-frequency monitoring (monthly/quarterly).
ATO Small Business Benchmarks and ABS/RBA industry data for comparators.

Frequency depends on purpose:

Daily/weekly: cash and liquidity snapshots for retail and hospitality.
Monthly: working capital, debtor days and margin monitoring.
Quarterly/annual: solvency, ROE/ROA and year-on-year trend analysis.

Adjustments to watch:

Accrual vs cash accounting: convert cash accounts to accrual equivalents (or vice versa) where comparisons require it.
Remove non-recurring items (one-off gains or expenses) for sustainable profitability metrics.
Normalise owner's drawings, related-party loans and GST/BAS impacts on revenue and expenses.

Key categories of financial ratios

Financial ratios typically fall into five categories — each answers different questions:

Liquidity ratios (current ratio, quick ratio) — short-term payment ability.
Profitability ratios (gross margin, net profit margin, ROA, ROE) — profit generation from sales and capital.
Efficiency/Activity ratios (inventory turnover, debtor days, asset turnover) — operating efficiency.
Solvency/Leverage ratios (debt-to-equity, interest coverage) — long-term viability and leverage.
Market/value ratios (EPS, P/E) — relevant for listed companies and valuations.

Formulas and worked examples (with AUD figures)

Example: Annual financials for "XYZ Pty Ltd"

Below is a simplified income statement and balance sheet for XYZ Pty Ltd for Year 3 (AUD).

Income Statement (Year 3)

Item	AUD
Revenue (Sales)	$1,200,000
Cost of Goods Sold (COGS)	$720,000
Gross Profit	$480,000
Operating Expenses (incl. depreciation)	$250,000
EBIT (Operating Profit)	$230,000
Interest Expense	$30,000
Net Profit Before Tax	$200,000

Balance Sheet (end of Year 3)

Item	AUD
Current Assets: Cash	$60,000
Trade Receivables	$150,000
Inventory	$120,000
Total Current Assets	$330,000
Non-Current Assets (PPE net)	$700,000
Total Assets	$1,030,000
Current Liabilities (Trade payables, short debt)	$200,000
Long-term Debt	$300,000
Total Liabilities	$500,000
Equity	$530,000
Total Liabilities + Equity	$1,030,000

Use these figures to compute standard ratios.

Liquidity ratios

Current ratio

Formula: Current ratio = Current assets / Current liabilities

Calculation: 330,000 / 200,000 = 1.65

Interpretation: Above 1 suggests current assets cover short liabilities; acceptable levels depend on industry.

Quick ratio (acid test)

Formula: Quick ratio = (Current assets - Inventory) / Current liabilities

Calculation: (330,000 - 120,000) / 200,000 = 1.05

Interpretation: Excluding inventory, the business still covers short-term obligations — reassuring for creditors.

Profitability ratios

Gross margin

Formula: Gross margin = Gross profit / Revenue × 100%

Calculation: 480,000 / 1,200,000 = 0.40 = 40%

Interpretation: 40% suggests solid markup or cost control.

Net profit margin (pre-tax)

Formula: Net margin = Net profit before tax / Revenue × 100%

Calculation: 200,000 / 1,200,000 = 0.1667 = 16.7%

Interpretation: Strong net margin for many industries; check sustainability after one-offs.

Return on Assets (ROA)

Formula: ROA = Net profit before tax / Total assets × 100%

Calculation: 200,000 / 1,030,000 = 0.194 = 19.4%

Interpretation: Shows how efficiently assets generate profit.

Return on Equity (ROE)

Formula: ROE = Net profit before tax / Equity × 100%

Calculation: 200,000 / 530,000 = 0.377 = 37.7%

Interpretation: High ROE can indicate efficient capital use, but may be amplified by leverage.

Efficiency / Activity ratios

Inventory turnover (times per year)

Formula: Inventory turnover = COGS / Average inventory

Using year-end inventory as a proxy: 720,000 / 120,000 = 6.0 times

Debtor days (average collection period)

Formula: Debtor days = Trade receivables / Revenue × 365

Calculation: 150,000 / 1,200,000 × 365 = 45.6 days

Interpretation: Six inventory turns is efficient for many retailers/manufacturers; 45–46 debtor days may be acceptable but monitor customer payment behaviour.

Solvency / Leverage ratios

Debt-to-equity

Formula: Debt-to-equity = Total liabilities / Equity

Calculation: 500,000 / 530,000 = 0.94

Interpretation: Less than 1 indicates equity funds more than debt; acceptable for many small firms.

Interest coverage (times)

Formula: Interest coverage = EBIT / Interest expense

Calculation: 230,000 / 30,000 = 7.67

Interpretation: Comfortable coverage — high interest coverage reduces default risk.

Plain-language interpretation and actions

If current ratio and quick ratio trend below 1.0, immediate cash management steps are required: accelerate receivables, negotiate supplier terms, or consider short-term finance.

Low inventory turnover suggests excess stock; actions include reviewing purchase policies, promotions, or product rationalisation.

High ROE vs moderate ROA indicates leverage is boosting equity returns — assess debt cost and refinancing risk.

Benchmarks and comparators — how to judge a ratio

Benchmarks come from:

ATO Small Business Benchmarks: use for sector-specific trading indicators (https://www.ato.gov.au/business/small-business-benchmarks/)
ABS and RBA industry statistics for macro comparators (https://www.abs.gov.au/; https://www.rba.gov.au/statistics/)
Peer companies and sector reports.

Best practice:

Use industry medians as guides, not strict targets. Seasonal businesses (e.g., tourism) will deviate.
Compare like-for-like: same accounting policies, comparable size and business model.
Combine benchmarks with trend analysis rather than single-period comparison.

Limitations and common pitfalls

Ratios are powerful but have limits:

Accounting policies: Different depreciation methods, lease recognition and revenue recognition impact comparability.
One-off items: Sale of assets, legal settlements or tax adjustments distort margins — normalise earnings when assessing performance.
Seasonality: Annual ratios may hide seasonal cash shortfalls; use rolling 12-month or monthly snapshots.
Off-balance sheet items: Operating leases, related-party guarantees and contingent liabilities can understate risk.
Thin capitalisation/related-party loans: Inspect related-party financing and transfer pricing for tax and risk analysis.
Size and lifecycle: Startups often show negative margins and high asset-light ROAs; compare to startup peers rather than established firms.
Data quality: Incomplete trial balances, owner drawings recorded as expenses, or omitted BAS adjustments lead to misleading ratios.

When interpreting ratios, ask: is the movement driven by operational change, an accounting adjustment, or a timing issue? Link diagnostic work to related concepts such as depreciation and lease balances.

Using ratios to make decisions (practical guidance)

A practical checklist to turn ratio insight into decisions:

Define the objective: liquidity monitoring, lending readiness, investor pitch, or operational improvement.
Choose relevant ratios: e.g., lender focus = interest coverage, debt-to-equity; operations = turnover, debtor days.
Normalise data: remove non-recurring items, annualise partial-year figures.
Benchmark: use ATO and ABS/RBA data and close peers.
Trend analysis: compute same ratios over 12–36 months to spot direction and volatility.
Scenario testing: model impacts of sales decline, margin compression or higher interest rates on coverage ratios.
Set thresholds and triggers: e.g., debtor days > 60 triggers collection escalation; current ratio < 1.2 triggers cash review.
Document actions: changes to credit terms, inventory policy, pricing or finance structure.

Lenders typically stress test with sensitivity to lower EBITDA and higher interest rates; investors focus on sustained ROE and margin stability.

Industry examples and frequency — who should run what, and when

Recommended cadence and focus by sector:

Retail and wholesale: Monitor daily cash and weekly inventory turnover; monthly debtor days. Key ratios = inventory turnover, gross margin, quick ratio.
Professional services: Monthly debtor days and utilisation rates; quarterly ROA/ROE. Focus on debtor collection and billable utilisation.
Manufacturing: Monthly inventory turnover and asset turnover; quarterly gearing and interest coverage.
Startups / growth companies: Monthly cash burn, runway (months of cash), gross margin and customer acquisition economics. ROE may be volatile — use unit economics instead.

Sample mapping: retailers run liquidity and inventory ratios daily/weekly; manufacturers focus monthly on efficiency and quarterly on solvency.

Tools, templates and calculators

Practical tools to implement ratio analysis:

Interactive ratio calculator: enter income and balance values to compute key ratios with plain-language flags.
Downloadable Excel template: pre-populated with formulas, a three-year trend chart and instructions for GST/BAS adjustments and normalisation. CSV alternative available for accessibility.
Link accounting data: map trial balance accounts from Xero/MYOB into the template to refresh ratios automatically.

When building templates, include cells for adjustments (one-offs, owner drawings) and produce a chart of three key ratios (current ratio, net margin, debtor days).

FAQ

Which ratio is most important?

No single ratio suffices. For liquidity problems, current/quick ratios and cash runway matter most; for creditworthiness, interest coverage and debt ratios; for investors, ROE/ROA and margins.

How often should I recalculate ratios?

Monthly is sensible for most small businesses; weekly or daily for high-turnover retailers. Quarterly and annual reviews are standard for strategic planning and lender reporting.

Can you use cash flow ratios?

Yes. Cash flow coverage ratios (e.g., operating cash flow to current liabilities) complement accrual ratios. Cash flow-based measures are crucial when accruals hide liquidity stress.

Which ratios do banks look at for lending?

Interest coverage, debt service coverage ratio (DSCR), current ratio and debt-to-equity. Lenders often require covenants and stress testing.

How do I compare companies of different sizes?

Use percentage and per-unit ratios (margins, ROA, turnover days) rather than absolute numbers. Consider per-employee metrics for services.

Do accounting standard changes (IFRS/AASB) affect ratios?

Yes — e.g., lease standard changes affect balance sheet leverage and asset bases. Review the impact and restate comparatives where needed. ASIC also provides reporting guidance (https://asic.gov.au/regulatory-resources/financial-reporting-and-audit/financial-reporting/).

Key takeaways

Ratio analysis turns financial statements into actionable insight. Use the right mix of liquidity, profitability, efficiency and solvency ratios for your objective, normalise the inputs, compare to appropriate benchmarks (ATO/ABS/RBA) and track trends rather than single-period snapshots. When in doubt, consult your accountant, use templates or calculators to stress test scenarios, and document the actions you'll take when ratios cross pre-set thresholds.