Altman Z-Score Calculator

Don’t just guess—know where you stand: this calculator takes your working capital, EBIT, retained earnings, equity or market value and sales, runs them through the renowned Altman model, and delivers a clear risk-zone score you can act on. It’s the one slide summary your board, lender or investor will thank you for.

By CalcMastery Editorial Team

Altman Z-Score Calculator

Estimate bankruptcy risk using Altman’s Z-score models (Z, Z', Z'') for public manufacturing, private manufacturing, and non-manufacturing/emerging-market firms.

Public Manufacturing (Z)Private Manufacturing (Z')Non‑Manufacturing / EM (Z'')

Choose the appropriate Altman model based on firm type.

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Assets expected to convert to cash within 12 months (cash, receivables, inventory).

$

Obligations due within 12 months (accounts payable, short‑term debt, accrued expenses).

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Sum of all assets. Used as the denominator for X1, X2, X3 and X5.

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Cumulative profits reinvested. Can be negative for younger or distressed firms.

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Earnings before interest and taxes over the chosen period.

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Sum of current and long‑term liabilities. Denominator for X4.

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Market capitalization = share price × shares outstanding. Used for X4 in Z (public) model.

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Shareholders’ equity from the balance sheet (book value). Used for X4 in Z' and Z'' models.

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Annual sales (revenue). Used for X5 = Sales / Total Assets in Z and Z' models.

Results

  • Altman Z‑Score—
  • Risk Category—
  • Model Used—
  • X1: Working Capital / TA—
  • X2: Retained Earnings / TA—
  • X3: EBIT / TA—
  • X4: Equity / TL—
  • X5: Sales / TA—

Enter your inputs above to calculate the results.

The Altman Z-Score is a financial model used to predict the likelihood of a company going bankrupt. It combines key balance sheet and income statement ratios into a single score that helps assess a firm’s financial health and risk of insolvency.

Formula

Z = 1.2 × Working Capital / Total Assets; +; 1.4 × Retained Earnings / Total Assets; +; 3.3 × EBIT / Total Assets; +; 0.6 × Market Value of Equity / Total Liabilities; +; 1.0 × Sales / Total Assets
  • Working Capital = Current Assets ($500 000) − Current Liabilities ($300 000) = $200 000 rightarrow WC / TA = 0.20
  • Retained Earnings = $200 000 rightarrow RE / TA = 0.20
  • EBIT = $150 000 rightarrow EBIT / TA = 0.15
  • Market Value of Equity (MVE) = $800 000; Total Liabilities = $400 000 rightarrow MVE / TL = 2.00
  • Sales = $900 000 rightarrow Sales / TA = 0.90
Z = 1.2 (0.20) + 1.4 (0.20) + 3.3 (0.15) + 0.6 (2.00) + 1.0 (0.90)
Z = 0.24 + 0.28 + 0.495 + 1.20 + 0.90 = 3.115

So the Altman Z-Score ≈ 3.12, placing the company in the Safe Zone under the original model.

What is the Altman Z-Score?

The Altman Z-Score is a bankruptcy-risk model that estimates how likely a company is to run into serious financial distress. It rolls up a handful of profitability, liquidity, leverage, and efficiency ratios into one number you can use as a quick “health check” (especially useful when screening companies, lenders/credit committees, or comparing peers).

If you want to sanity-check the inputs behind the score, related metrics you may want to calculate separately include: Working Capital, Current Ratio, Quick Ratio, Debt-to-Equity Ratio, Interest Coverage Ratio, EBIT Margin, Retained Earnings, Market Cap, and Total Assets.

Worked Example

Given:

  • Current Assets = $500,000
  • Current Liabilities = $300,000
  • Total Assets (TA) = $1,000,000
  • Retained Earnings (RE) = $200,000
  • EBIT = $150,000
  • Market Value of Equity (MVE) = $800,000
  • Total Liabilities (TL) = $400,000
  • Sales = $900,000

Step 1) Compute each ratio

  • Working Capital = Current Assets − Current Liabilities
    • = $500,000 − $300,000 = $200,000 rightarrow WC / TA = 200,000 / 1,000,000 = 0.20
  • RE / TA = 200,000 / 1,000,000 = 0.20
  • EBIT / TA = 150,000 / 1,000,000 = 0.15
  • MVE / TL = 800,000 / 400,000 = 2.00
  • Sales / TA = 900,000 / 1,000,000 = 0.90

Step 2) Plug into the formula

Z = 1.2(0.20) + 1.4(0.20) + 3.3(0.15) + 0.6(2.00) + 1.0(0.90)
Z = 0.24 + 0.28 + 0.495 + 1.20 + 0.90
Z = 3.115 approx 3.12

Interpretation

The Altman Z-Score is ~3.12, which falls in the Safe Zone under the original model (lower financial distress risk based on these inputs).

How to Use the Altman Z-Score Calculator

Step 1 — Choose your model

Pick Public Manufacturing (Z) for listed manufacturers, Private Manufacturing (Z′) for private manufacturers, or Non-Manufacturing / EM (Z″) for services, retail, finance, and emerging-market firms.

Step 2 — Enter core balance-sheet items

Fill in Current Assets, Current Liabilities, Total Assets (TA), and Total Liabilities (TL). The tool computes Working Capital/TA (X1) automatically.

Step 3 — Add profitability & equity inputs

  • Retained Earnings → builds X2 (RE/TA).

    • - EBIT (Operating Income) → builds X3 (EBIT/TA).

    - Equity →

- For Public (Z) use Market Value of Equity (MVE).

- For Private (Z′) and Non-Manufacturing (Z″) use Book Value of Equity (BVE) to form X4 (Equity/TL).

Step 4 — Provide Sales only when needed

Enter Sales/Revenue for Z and Z′ (creates X5 = Sales/TA).

For Z″, Sales is not used—it’s omitted by design.

Step 5 — Adjust precision

Toggle Show Decimals if you want more exact ratios and Z-Score.

Step 6 — Click “Calculate”

You’ll see the Altman Z-Score, Risk Category, the model used, and each component (X1–X5) for quick auditing.

Step 7 — Interpret the score (rules of thumb)

  • Public Manufacturing (Z): > 2.99 Safe, 1.81–2.99 Grey, < 1.81 Distress.

    • - Private Manufacturing (Z′): > 2.90 Safe, 1.23–2.90 Grey, < 1.23 Distress.

    - Non-Manufacturing / EM (Z″): > 2.60 Safe, 1.10–2.60 Grey, < 1.10 Distress.

Step 8 — Take action

Use the risk label to guide next steps: monitor if Grey, pursue de-risking (cash, margins, leverage) if Distress, or track trends over time if Safe.

Frequently Asked Questions

What exactly is the Altman Z-Score and why should I use the calculator?

The Altman Z-Score is a statistical model developed by Edward I. Altman in 1968 that combines five key financial ratios to estimate a company’s probability of bankruptcy over the next two years.

Using our calculator, you enter your company’s data (working capital, retained earnings, EBIT, sales, equity/value/liabilities depending on the model) and instantly receive a Z-Score plus a risk category (Safe / Grey / Distress) so you can assess financial health quickly.

Which version of the Z-Score formula should I select for my company (public manufacturing, private manufacturing, non-manufacturing)?

You should pick the formula that matches your company’s type because the coefficients and input definitions vary:

  • For public manufacturing companies the original formula is: Z = 1.2×X₁ + 1.4×X₂ + 3.3×X₃ + 0.6×X₄ + 1.0×X₅.
  • For private manufacturing (book value equity version) you use Z′ = 0.717×X₁ + 0.847×X₂ + 3.107×X₃ + 0.420×X₄ + 0.998×X₅.
  • For non-manufacturing or emerging market firms a version such as Z″ = 6.56×X₁ + 3.26×X₂ + 6.72×X₃ + 1.05×X₄ (with no sales term) is used.

    • Choosing the right model ensures the result is meaningful for your company’s sector and structure.

What inputs do I need for the calculator and how do I compute the ratios?

To use the calculator you’ll need: current assets and current liabilities (to compute working capital), retained earnings, EBIT (operating income before interest & tax), total assets, total liabilities (or book value of equity vs liabilities or market value of equity vs liabilities depending on model), and sales/revenue for models that include it. For each ratio:

  • X = (current assets − current liabilities) ÷ total assets
  • X = retained earnings ÷ total assets
  • X = EBIT ÷ total assets
  • X = market or book value of equity ÷ total liabilities (or other equity vs liability term depending on model)
  • X = sales ÷ total assets (only in models that include it)

    • Enter the values into the calculator and get your Z-Score and classification.

How do I interpret my Z-Score result — what is considered “safe”, “grey zone”, or “distress”?

Interpretation depends slightly on model, but for the original public manufacturing version:

  • A Z-Score above ~3.0 indicates the company is in the “safe zone” and bankruptcy risk is low.
  • A Z-Score between roughly 1.8 and 3.0 sits in the “grey zone” meaning moderate risk.
  • A Z-Score below ~1.8 implies the company is in the “distress zone” and has a higher probability of bankruptcy.

    • For the variations (private / non-manufacturing) the threshold values shift, so ensure you use the correct one for your model.

What are the limitations of the Altman Z-Score and when should I be cautious?

The Z-Score is a very useful quick check, but you must be aware of its restrictions:

  • It relies on historical accounting data, so recent rapid changes or non-standard business models may not be well captured.
  • It was originally developed for manufacturing and public firms — for non-manufacturing, emerging markets, very new or early stage companies the predictive power is weaker.
  • It does not directly include cash flow, nor does it always capture qualitative risk (management issues, industry disruption, off-balance sheet risks).

    • So while a low Z-Score signals a need for deeper investigation, it should not be the only analysis you rely upon.

Sources & Methodology