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Study Guide: Principles of Financial Accounting: Financial Statement Analysis Efficiency Ratios Asset Turnover Receivables Turnover Inventory Turnover
Source: https://www.fatskills.com/bachelor-of-commerce-bcom/chapter/principlesoffinancialaccounting-accounting-financial-statement-analysis-efficiency-ratios-asset-turnover-receivables-turnover-inventory-turnover

Principles of Financial Accounting: Financial Statement Analysis Efficiency Ratios Asset Turnover Receivables Turnover Inventory Turnover

By Fatskills Exam Guides Team — the exam nerds behind 28,500+ quizzes and 2.1M practice questions across 500+ global exams.

⏱️ ~4 min read

What It Is

Efficiency ratios measure a company's ability to generate sales from its assets, manage its accounts receivable, and turn over its inventory. These ratios help investors and creditors assess a company's operational efficiency and liquidity. For example, if a company buys $10,000 of inventory and sells it for $15,000, its inventory turnover ratio would be 1.5 ($15,000 ÷ $10,000).

Key Concepts & Formulas

  • Asset Turnover Ratio: Measures the efficiency of a company's asset utilization. It is calculated as Sales ÷ Total Assets. For example, if a company has $100,000 in sales and $500,000 in total assets, its asset turnover ratio would be 0.2 ($100,000 ÷ $500,000).
  • Receivables Turnover Ratio: Measures the efficiency of a company's accounts receivable management. It is calculated as Sales ÷ Average Accounts Receivable. For example, if a company has $100,000 in sales and an average accounts receivable balance of $20,000, its receivables turnover ratio would be 5 ($100,000 ÷ $20,000).
  • Inventory Turnover Ratio: Measures the efficiency of a company's inventory management. It is calculated as Cost of Goods Sold (COGS) ÷ Average Inventory. For example, if a company has $50,000 in COGS and an average inventory balance of $10,000, its inventory turnover ratio would be 5 ($50,000 ÷ $10,000).
  • Days Sales Outstanding (DSO): Measures the average number of days it takes for a company to collect its accounts receivable. It is calculated as Average Accounts Receivable ÷ (Sales ÷ 365). For example, if a company has an average accounts receivable balance of $20,000 and sales of $100,000, its DSO would be 20 ($20,000 ÷ ($100,000 ÷ 365)).
  • Days Inventory Outstanding (DIO): Measures the average number of days it takes for a company to sell its inventory. It is calculated as Average Inventory ÷ (COGS ÷ 365). For example, if a company has an average inventory balance of $10,000 and COGS of $50,000, its DIO would be 20 ($10,000 ÷ ($50,000 ÷ 365)).

Journal Entry Examples

  1. Purchasing Inventory: If a company buys $10,000 of inventory on account, the journal entry would be:

Dr. Accounts Payable $10,000 Cr. Inventory $10,000

This entry increases the inventory account and records the amount owed to the supplier.


  1. Selling Inventory: If a company sells $5,000 of inventory for cash, the journal entry would be:

Dr. Cash $5,000 Cr. Sales Revenue $5,000 Cr. Cost of Goods Sold $5,000 Dr. Inventory $5,000

This entry increases the cash account, records the sales revenue, and decreases the inventory account.

Common Mistakes

  1. Mistake: Confusing debits and credits for expense accounts.
    Correction: Remember that debits increase assets, expenses, and losses, while credits increase liabilities, equity, and revenues. Use the mnemonic "ADE" (Assets, Drawings, Expenses) to help you remember.
  2. Mistake: Not considering the normal balance of accounts when making journal entries.
    Correction: Always consider the normal balance of accounts when making journal entries. For example, if an account has a normal balance of debit, you should debit it, not credit it.
  3. Mistake: Not using the correct formula for calculating efficiency ratios.
    Correction: Use the correct formulas for calculating efficiency ratios, such as Sales ÷ Total Assets for the asset turnover ratio.

Exam Tips

  1. Tip: Remember that efficiency ratios are calculated using historical data, so make sure to use the correct numbers.
  2. Tip: Be careful when using the DSO and DIO formulas, as they require the average accounts receivable and inventory balances.
  3. Tip: Use the correct units of measurement when calculating efficiency ratios, such as days or periods.

Quick Practice

  1. Problem: A company has $100,000 in sales and an average accounts receivable balance of $20,000. What is its receivables turnover ratio? Answer: 5 ($100,000 ÷ $20,000) Explanation: The receivables turnover ratio is calculated as sales ÷ average accounts receivable.
  2. Problem: A company has $50,000 in COGS and an average inventory balance of $10,000. What is its inventory turnover ratio? Answer: 5 ($50,000 ÷ $10,000) Explanation: The inventory turnover ratio is calculated as COGS ÷ average inventory.
  3. Problem: A company has an average accounts receivable balance of $20,000 and sales of $100,000. What is its DSO? Answer: 20 ($20,000 ÷ ($100,000 ÷ 365)) Explanation: The DSO is calculated as average accounts receivable ÷ (sales ÷ 365).

Last-Minute Cram Sheet

  1. Asset Turnover Ratio: Sales ÷ Total Assets
  2. Receivables Turnover Ratio: Sales ÷ Average Accounts Receivable
  3. Inventory Turnover Ratio: COGS ÷ Average Inventory
  4. DSO: Average Accounts Receivable ÷ (Sales ÷ 365)
  5. DIO: Average Inventory ÷ (COGS ÷ 365)
  6. Normal Balance: Assets, Expenses, and Losses (debit), Liabilities, Equity, and Revenues (credit)
  7. Efficiency Ratios: Measure a company's ability to generate sales from its assets, manage its accounts receivable, and turn over its inventory.
  8. ⚠️ Dividends are NOT an expense – they go directly to retained earnings.
  9. ⚠️ Debits increase assets, expenses, and losses, while credits increase liabilities, equity, and revenues.
  10. ⚠️ Always consider the normal balance of accounts when making journal entries.


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