Stock Analysis RATIOS GUIDE

Mastering Efficiency Ratios

Discover how effectively a company manages its resources. We go from simple turnover metrics to complex cash cycles to help you find high-quality businesses.

Start Learning

Why Efficiency Matters

Efficiency ratios are the speedometer of a business. While valuation ratios (like P/E) tell you if a stock is cheap, efficiency ratios tell you if the business is working. They measure how well a company uses its assets and liabilities to generate sales and maximize profits.

Asset Usage

How much revenue is generated for every dollar of assets?

Inventory Speed

How quickly does the company sell the products it makes?

Cash Collection

How fast do customers pay their bills?

The Core Efficiency Metrics

Start with these three fundamental calculations to assess operational health.

Asset Turnover

Calculated as Revenue / Total Assets. This ratio reveals how efficiently a company uses its asset base to generate sales.

Goal: Higher is better. It means the company is generating more sales with fewer assets.

Inventory Turnover

Calculated as COGS / Average Inventory. This measures how many times inventory is sold and replaced over a period.

Goal: Higher is generally better, indicating strong sales and less risk of obsolete stock.

Receivables Turnover

Calculated as Revenue / Average Accounts Receivable. It shows how effectively a company collects debts.

Goal: Higher is better. It means the company collects cash quickly from customers.
Advanced Metric

The Cash Conversion Cycle (CCC)

Moving beyond simple turnover, the Cash Conversion Cycle combines three metrics to calculate the time (in days) it takes for a company to convert its investments in inventory into cash flows from sales.

Formula:

DIO + DSO - DPO = CCC

DIO: Days Inventory Outstanding
DSO: Days Sales Outstanding
DPO: Days Payable Outstanding

A negative CCC is the holy grail (e.g., Amazon). It means the company gets paid by customers before it has to pay suppliers.

Cycle Visualization

1

Buy Inventory

Cash leaves the company (eventually).

2

Sell Product

Inventory converts to Receivables.

3

Collect Cash

The cycle is complete.

Comparative Analysis

Efficiency ratios are relative. A "good" number depends entirely on the industry. Below is a comparison of major retailers to see who manages operations best.

Metric Costco (COST) Walmart (WMT) Target (TGT)
Inventory Turnover 12.4x 8.3x 6.1x
Asset Turnover 3.6x 2.4x 1.9x
Cash Conversion Cycle -3 Days 4 Days 12 Days
ROIC 18.2% 12.5% 14.1%

*Data for illustration purposes. Costco's negative CCC indicates extreme efficiency.

Find Efficient Companies Instantly

Don't calculate these ratios manually. Use Old School Value's screener to filter for high Asset Turnover and negative Cash Conversion Cycles in seconds.

Start Screening Now
View All Ratios

Includes 14-day free trial. No credit card required.