Financial Statement Analysis: Ratios
Overview
- What you’ll learn: The four categories of financial ratios (liquidity, profitability, solvency, efficiency), how to calculate and interpret each, and what the ratios reveal about a company’s health.
- Prerequisites: Lesson 4 — The Statement of Equity
- Estimated reading time: 18 minutes
Introduction
The Grand Historian records: Financial statements are rich with data, but data without analysis is merely noise. A revenue figure of $50 million is meaningless until you compare it to last year, to the industry average, or to the assets employed to generate it. Ratios are the alchemist’s tools — they transform raw numbers into gold: insights about profitability, liquidity, solvency, and operational efficiency.
No single ratio tells the whole story. An investor who relies on one ratio alone is like a physician who diagnoses based on pulse alone. The art lies in reading the ratios together, across time, and against competitors.
Liquidity Ratios
Measure the company’s ability to meet short-term obligations.
| Ratio | Formula | Interpretation |
|---|---|---|
| Current Ratio | Current Assets / Current Liabilities | > 1.0 means the company can cover short-term debts; 1.5-2.0 is generally healthy |
| Quick Ratio (Acid Test) | (Cash + Short-term Investments + A/R) / Current Liabilities | More conservative — excludes inventory, which may not be quickly convertible |
| Cash Ratio | Cash / Current Liabilities | The strictest test — can the company pay obligations with cash alone? |
Example
Current Assets = $108,000; Current Liabilities = $31,000
Current Ratio = $108,000 / $31,000 = 3.48 (very strong liquidity)
Profitability Ratios
Measure the company’s ability to generate profit relative to revenue, assets, or equity.
| Ratio | Formula | Interpretation |
|---|---|---|
| Gross Margin | Gross Profit / Net Sales | How much of each dollar of revenue remains after COGS |
| Operating Margin | Operating Income / Net Sales | Profitability from core operations |
| Net Profit Margin | Net Income / Net Sales | Bottom-line profitability |
| Return on Assets (ROA) | Net Income / Average Total Assets | How efficiently the company uses its assets to generate profit |
| Return on Equity (ROE) | Net Income / Average Shareholders’ Equity | Return generated for the owners’ investment |
| Earnings Per Share (EPS) | (Net Income – Preferred Dividends) / Weighted Avg Shares Outstanding | Profit attributable to each share of common stock |
Example
Net Income = $37,100; Net Sales = $200,000; Avg Total Assets = $220,000; Avg Equity = $130,000
- Net Profit Margin = $37,100 / $200,000 = 18.6%
- ROA = $37,100 / $220,000 = 16.9%
- ROE = $37,100 / $130,000 = 28.5%
Solvency (Leverage) Ratios
Measure the company’s ability to meet long-term obligations and the degree of financial leverage.
| Ratio | Formula | Interpretation |
|---|---|---|
| Debt-to-Equity | Total Liabilities / Total Equity | Higher = more leverage and more risk |
| Debt Ratio | Total Liabilities / Total Assets | What proportion of assets is financed by debt |
| Interest Coverage | EBIT / Interest Expense | Can the company afford its interest payments? > 3.0 is generally safe |
Efficiency (Activity) Ratios
Measure how effectively the company uses its assets.
| Ratio | Formula | Interpretation |
|---|---|---|
| Inventory Turnover | COGS / Average Inventory | How many times inventory is sold and replaced per period |
| Days in Inventory | 365 / Inventory Turnover | Average number of days to sell inventory |
| A/R Turnover | Net Credit Sales / Average A/R | How quickly receivables are collected |
| Days Sales Outstanding | 365 / A/R Turnover | Average collection period in days |
| Total Asset Turnover | Net Sales / Average Total Assets | Revenue generated per dollar of assets |
The DuPont Analysis
The DuPont framework decomposes ROE into three components:
ROE = Net Profit Margin x Asset Turnover x Equity Multiplier
This reveals why ROE is high or low — is it because of strong margins, efficient asset use, or high leverage?
Key Takeaways
- Ratios fall into four categories: liquidity, profitability, solvency, and efficiency.
- No single ratio tells the whole story — analyze them together, over time, and against peers.
- Liquidity ratios assess short-term solvency; leverage ratios assess long-term solvency.
- ROE is the ultimate profitability measure; DuPont analysis decomposes it into margin, turnover, and leverage.
- Context matters — a 2.0 current ratio may be healthy in one industry and excessive in another.
What’s Next
In Lesson 6, you will learn Horizontal and Vertical Analysis — trend analysis and common-size statements that reveal patterns hidden in the raw numbers.
繁體中文
概述
- 學習目標:四大類財務比率(流動性、獲利性、償債能力、效率)之計算與解讀。
- 先決條件:第 4 課——權益變動表
- 預計閱讀時間:18 分鐘
簡介
太史公曰:財務報表充斥數據,然無分析之數據不過雜訊。$5,000 萬之收入數字,在與去年、業界平均或所用資產相比之前毫無意義。比率乃煉金術士之工具——將原始數字煉為黃金:對獲利性、流動性、償債能力及營運效率之洞見。
流動性比率
| 比率 | 公式 | 解讀 |
|---|---|---|
| 流動比率 | 流動資產 / 流動負債 | > 1.0 表示可覆蓋短期債務 |
| 速動比率 | (現金 + 短投 + 應收) / 流動負債 | 更保守——排除存貨 |
獲利性比率
| 比率 | 公式 |
|---|---|
| 毛利率 | 毛利 / 淨銷貨 |
| 淨利率 | 淨利 / 淨銷貨 |
| 資產報酬率(ROA) | 淨利 / 平均總資產 |
| 股東權益報酬率(ROE) | 淨利 / 平均股東權益 |
償債能力比率
| 比率 | 公式 |
|---|---|
| 負債權益比 | 總負債 / 總權益 |
| 利息保障倍數 | EBIT / 利息費用 |
效率比率
| 比率 | 公式 |
|---|---|
| 存貨周轉率 | 銷貨成本 / 平均存貨 |
| 應收帳款周轉率 | 淨賒銷 / 平均應收帳款 |
杜邦分析
ROE = 淨利率 x 資產周轉率 x 權益乘數
重點摘要
- 比率分四大類:流動性、獲利性、償債能力、效率。
- 單一比率無法述說全貌——須綜合分析、跨時期比較、與同業對照。
- ROE 是獲利能力之終極衡量;杜邦分析將其分解為利潤率、周轉率、槓桿。
下一步
在第 6 課中,您將學習水平與垂直分析。
日本語
概要
- 学習内容:4カテゴリの財務比率(流動性・収益性・支払能力・効率性)の計算と解釈。
- 前提条件:レッスン4——株主資本等変動計算書
- 推定読了時間:18分
はじめに
太史公曰く:財務諸表はデータに溢れているが、分析なきデータは単なる雑音に過ぎない。5000万ドルの売上高は、昨年と、業界平均と、その創出に用いた資産と比較するまで無意味である。比率は錬金術師の道具——生の数字を黄金に変える。
流動性比率
| 比率 | 計算式 |
|---|---|
| 流動比率 | 流動資産 / 流動負債 |
| 当座比率 | (現金 + 短期投資 + 売掛金) / 流動負債 |
収益性比率
| 比率 | 計算式 |
|---|---|
| 売上総利益率 | 売上総利益 / 純売上高 |
| 純利益率 | 純利益 / 純売上高 |
| 総資産利益率(ROA) | 純利益 / 平均総資産 |
| 自己資本利益率(ROE) | 純利益 / 平均自己資本 |
支払能力比率
| 比率 | 計算式 |
|---|---|
| 負債自己資本比率 | 総負債 / 総自己資本 |
| インタレスト・カバレッジ | EBIT / 支払利息 |
効率性比率
| 比率 | 計算式 |
|---|---|
| 棚卸資産回転率 | 売上原価 / 平均棚卸資産 |
| 売掛金回転率 | 純掛売上高 / 平均売掛金 |
デュポン分析
ROE = 純利益率 × 総資産回転率 × 財務レバレッジ
重要ポイント
- 比率は4カテゴリ:流動性、収益性、支払能力、効率性。
- 単一の比率で全体像は語れない——総合的に、時系列で、同業他社と比較して分析する。
- ROEは収益性の究極の尺度。デュポン分析がその内訳を明らかにする。
次のステップ
レッスン6では、水平分析と垂直分析を学ぶ。