Financial Statement Analysis: Ratios

Level: Intermediate Module: Financial Statements 3 min read Lesson 5 of 67

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。

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