How to Use This Calculator
- 1
Enter Financial Statement Data
Input Working Capital, Total Assets, Retained Earnings, EBIT, Market Value of Equity, Total Liabilities, and Sales from the company's balance sheet and income statement.
- 2
Review Your Results
The calculator displays the Altman Z-Score with zone classification (Safe, Grey, or Distress), plus all five component ratios (X1–X5) with their weighted contributions. The Insights panel shows which ratio contributes most, distance to zone thresholds, and a Z-Score Composition breakdown bar.
Example Calculation
An analyst evaluates a company with $500,000 working capital, $2,000,000 total assets, $300,000 retained earnings, $400,000 EBIT, $1,500,000 market value of equity, $800,000 total liabilities, and $3,000,000 in sales.
Working Capital
$500,000
Total Assets
$2,000,000
Retained Earnings
$300,000
EBIT
$400,000
Market Value of Equity
$1,500,000
Total Liabilities
$800,000
Sales
$3,000,000
Results
Altman Z-Score
3.79
X1 — Working Capital / Assets
0.2500
X2 — Retained Earnings / Assets
0.1500
X3 — EBIT / Assets
0.2000
X4 — Equity / Liabilities
1.8750
X5 — Sales / Assets
1.5000
Insights card shows X5 (Turnover) is the largest contributor at 1.
Tips
Check the Breakdown Bar for Weak Spots
The Z-Score Composition bar shows how much each ratio contributes. If one segment is disproportionately small (like X2 at 0.210 in the default example), improving that ratio gives the biggest marginal gain — increasing retained earnings from $300K to $600K would add 0.21 to the Z-Score.
Track Your Score Over Quarters
Use the Recent Calculations history to compare Z-Scores across quarters. A declining trend — even within the Safe Zone — signals deteriorating financial health before it becomes critical.
Understand X3's Outsized Influence
X3 (EBIT / Total Assets) has the highest weight at ×3.3. The Insights panel shows that a 5% improvement in EBIT adds 0.17 points to the Z-Score — more impact per unit than any other ratio.
Compare Public vs Private Versions
This calculator uses market value of equity (for public companies). For private companies, use our Altman Z-Score for Private Companies calculator, which substitutes book value of equity and uses different coefficients.
Assessing Corporate Health with the Altman Z-Score
The Altman Z-Score Calculator synthesizes five key financial ratios into a single bankruptcy-risk score.
Enter your balance sheet and income statement data to get the Z-Score, zone classification, and a component-by-component breakdown showing which factors drive the score up or down.
Understanding where a company falls — Safe Zone (above 2.99), Grey Zone (1.81–2.99), or Distress Zone (below 1.81) — is essential for investment and credit decisions in 2026.
The Z-Score Formula
The Altman Z-Score for public companies uses five weighted financial ratios:
X1 = Working Capital / Total Assets (liquidity)
X2 = Retained Earnings / Total Assets (cumulative profitability)
X3 = EBIT / Total Assets (operating profitability)
X4 = Market Value of Equity / Total Liabilities (solvency)
X5 = Sales / Total Assets (asset turnover)
Z-Score = 1.2×X1 + 1.4×X2 + 3.3×X3 + 0.6×X4 + 1.0×X5
The coefficients were empirically derived by Altman in 1968 from a study of 66 manufacturing companies (33 bankrupt, 33 non-bankrupt).
X3 carries the highest weight (3.3) because operating profitability is the strongest predictor of financial distress.
Worked Example: Z-Score Calculation
A company has: Working Capital $500,000, Total Assets $2,000,000, Retained Earnings $300,000, EBIT $400,000, Market Value of Equity $1,500,000, Total Liabilities $800,000, Sales $3,000,000.
- X1 = $500,000 / $2,000,000 = 0.2500 → Weighted: 1.2 × 0.25 = 0.300
- X2 = $300,000 / $2,000,000 = 0.1500 → Weighted: 1.4 × 0.15 = 0.210
- X3 = $400,000 / $2,000,000 = 0.2000 → Weighted: 3.3 × 0.20 = 0.660
- X4 = $1,500,000 / $800,000 = 1.8750 → Weighted: 0.6 × 1.875 = 1.125
- X5 = $3,000,000 / $2,000,000 = 1.5000 → Weighted: 1.0 × 1.50 = 1.500
Z-Score = 0.300 + 0.210 + 0.660 + 1.125 + 1.500 = 3.79 → Safe Zone (above 2.99)
The largest contributor is X5 (Turnover) at 1.500 points, accounting for 40% of the total score.
The smallest is X2 (Retained Earnings) at 0.210 — improving retained earnings offers the most marginal improvement opportunity.
Zone Thresholds and What They Mean
| Zone | Z-Score | Interpretation | Action |
|---|---|---|---|
| Safe Zone | > 2.99 | Low bankruptcy risk — financially healthy | Continue monitoring quarterly |
| Grey Zone | 1.81 – 2.99 | Uncertain — could go either way | Investigate weak ratios, increase monitoring |
| Distress Zone | < 1.81 | High bankruptcy risk within 2 years | Urgent review — improve profitability and reduce debt |
The default example scores 3.79, placing it 0.80 points above the Safe Zone threshold.
A company would need to lose 1.99 points to fall into Distress — roughly equivalent to EBIT dropping to zero (losing 0.66) AND sales halving (losing 0.75) AND equity declining significantly.
Limitations and Best Practices
The Z-Score is a powerful screening tool but not a definitive verdict.
Key limitations:
- Industry bias — Developed for manufacturing firms. Service companies with few tangible assets or financial institutions with unique balance sheet structures may score differently.
- Snapshot in time — A single Z-Score reflects one reporting period. Track the trend over quarters to spot deterioration early.
- Market cap dependency — X4 uses market value of equity, which fluctuates with stock price and market sentiment, not just fundamentals. For private companies, use the Z'-Score variant with book value.
Always combine the Z-Score with qualitative factors: management quality, competitive position, industry outlook, and cash flow sustainability.
Frequently Asked Questions
What is the Altman Z-Score?
The Altman Z-Score is a bankruptcy prediction formula developed by Edward Altman in 1968. It combines five weighted financial ratios — liquidity, cumulative profitability, operating profitability, solvency, and asset turnover — into a single score. A score above 2.99 indicates the Safe Zone (low bankruptcy risk), 1.81–2.99 is the Grey Zone (uncertain), and below 1.81 is the Distress Zone (high bankruptcy risk).
How are the five ratios weighted?
The formula is Z = 1.2×X1 + 1.4×X2 + 3.3×X3 + 0.6×X4 + 1.0×X5. X3 (EBIT/Assets) has the highest weight at 3.3, making operating profitability the most influential factor. For the default example, X5 (Sales/Assets) contributes the most at 1.500 points because the high turnover ratio (1.5) multiplied by its 1.0 weight exceeds the others.
What's the difference between this and the private company Z-Score?
The original Z-Score (this calculator) uses market value of equity for X4, making it suitable for publicly traded companies. The Z'-Score for private companies substitutes book value of equity and uses different coefficients (0.717, 0.847, 3.107, 0.420, 0.998). The zone thresholds also differ slightly. Use this calculator for public companies and the private version for companies without a market cap.
Can the Z-Score predict bankruptcy for all types of companies?
The original model was developed for publicly traded manufacturing firms. It's less reliable for financial institutions, very young companies, or companies in service-heavy industries with minimal tangible assets. Modified versions exist for non-manufacturing and emerging-market firms. Always supplement the Z-Score with qualitative analysis and industry-specific context.
How do I improve a low Z-Score?
Focus on the ratio with the most room for improvement. Check the Breakdown Bar to see which component contributes least. Common strategies: increase working capital (X1) by improving collections or reducing short-term debt, boost EBIT (X3) by cutting costs or increasing margins, and improve asset turnover (X5) by growing revenue without proportionally increasing assets. X3 has the highest weight, so profitability improvements have the greatest impact.