Class 9-10-11

Updated 4 Oct 2026

  • Class 9 (หยุด)
  • Class 10 - บอกคะแนน Midterm + สอนนิดหน่อย
  • Class 11 - March 17
    • March 17+7 หยุด อาจารย์ทำฟัน

Financial Statements Are Designed for Analysis

  • Classified Financial Statements
    • Items with certain characteristics are grouped together
    • Results in standardized, meaningful subtotals
  • Comparative Financial Statements
    • Amounts from several years appear side by side
    • Helps identify significant changes and trends
  • Consolidated Financial Statements
    • Information for the parent and subsidiary are presented
    • Presented as if the two companies are a single business unit

Tools of Analysis

Four main tools used to analyze financial statements:

  • Dollar & Percentage Changes — How much did a line item change?
  • Trend Percentages — What is the multi-year direction?
  • Component Percentages — What proportion is each item relative to the whole?
  • Ratios — What is the relationship between two financial items?

1. Dollar and Percentage Changes

Dollar Change

Dollar Change=Analysis Period Amount−Base Period Amount\boxed{\text{Dollar Change} = \text{Analysis Period Amount} - \text{Base Period Amount}}

Percentage Change

Percent Change=Dollar ChangeBase Period Amount\boxed{\text{Percent Change} = \frac{\text{Dollar Change}}{\text{Base Period Amount}}}

Analogy: If your salary was ฿20,000 last year and ฿25,000 this year, the dollar change is +฿5,000, and the % change is 25%. Simple before-and-after comparison.

Example — Clover, Inc. Comparative Balance Sheets (Dec 31)

Item20252024Dollar Change% Change
Cash & equivalents$12,000$23,500$(11,500)-48.9%
Accounts receivable, net60,00040,00020,000+50.0%
Inventory80,000100,000(20,000)-20.0%
Prepaid expenses3,0001,2001,800+150.0%
Total current assets$155,000$164,700(9,700)-5.9%
Land40,00040,000—0.0%
Buildings & equipment, net120,00085,00035,000+41.2%
Total property & equipment$160,000$125,00035,000+28.0%
Total assets$315,000$289,700$25,300+8.7%

Calculation example: (−11,500÷23,500)×100%=−48.9%(-11,500 \div 23,500) \times 100\% = -48.9\%


2. Trend Percentages

Used to reveal patterns in data covering successive periods.
Trend %=Analysis Period AmountBase Period Amount×100%\boxed{\text{Trend \%} = \frac{\text{Analysis Period Amount}}{\text{Base Period Amount}} \times 100\%}

Analogy: Set year 1 as "100%" (your baseline). Every subsequent year, you ask: "Compared to where I started, am I at 110%? 150%? 80%?" It's like tracking your fitness gains vs. your Day 1 benchmark.

Example — Berry Products Income Information

Item20252024202320222021 (Base)
Revenues$400,000$355,000$320,000$290,000$275,000
Cost of sales285,000250,000225,000198,000190,000
Gross profit115,000105,00095,00092,00085,000
Trend Percentages (Base = 2021 = 100%)
Item20252024202320222021
Revenues145%129%116%105%100%
Cost of sales150%132%118%104%100%
Gross profit135%124%112%108%100%

⚠️ Notice: Cost of sales grew faster (150%) than revenues (145%) — this signals a margin squeeze. Gross profit % growth (135%) lagging behind revenue growth is a warning sign!


3. Component Percentages (Common-Size Analysis)

Examines the relative size of each item as a % of a base amount.
Component %=Analysis AmountBase Amount×100%\boxed{\text{Component \%} = \frac{\text{Analysis Amount}}{\text{Base Amount}} \times 100\%}

Financial StatementUse X as Base Amount
Balance SheetTotal Assets
Income StatementRevenues (คือตัวที่เยอะที่สุด)

Analogy: Imagine slicing a pizza. Each slice = one line item. Component % tells you _how big each slice is_compared to the whole pizza. Useful to compare companies of different sizes on equal footing.

Example — Clover, Inc. Balance Sheet (Common-Size)

Item20252024% 2025% 2024
Cash & equivalents$12,000$23,5003.8%8.1%
Accounts receivable, net60,00040,00019.0%13.8%
Inventory80,000100,00025.4%34.6%
Prepaid expenses3,0001,2001.0%0.4%
Total current assets$155,000$164,70049.2%56.9%
Land40,00040,00012.7%13.8%
Buildings & equipment, net120,00085,00038.1%29.3%
Total property & equipment$160,000$125,00050.8%43.1%
Total assets$315,000$289,700100.0%100.0%

Example calculation: ($12,000 \div $315,000) \times 100\% = 3.8\%

Example — Clover, Inc. Income Statement (Common-Size)

Item20252024% 2025% 2024
Revenues$520,000$480,000100.0%100.0%
Cost of sales360,000315,00069.2%65.6%
Selling & admin.128,600126,00024.7%26.3%
Interest expense6,4007,0001.2%1.5%
Income before taxes$25,000$32,0004.8%6.7%
Income taxes (30%)7,5009,6001.4%2.0%
Net income$17,500$22,4003.4%4.7%
Net income per share$0.79$1.01
Avg. # common shares22,20022,200

⚠️ Key insight: Cost of sales jumped from 65.6% → 69.2% of revenue, while net income margin shrank from 4.7% → 3.4%. The company is less profitable despite higher revenues.


4. Ratios

A ratio is a simple mathematical expression of the relationship between one item and another.

Ratios can compare:

  • Past performance to present performance
  • Other companies to your company

Uses & Limitations

UsesLimitations
Help users understand financial relationshipsManagement may manipulate transactions just to improve ratios
Provide quick comparison between companiesDon't capture progress toward non-financial goals

All four methods are in #FinalExam
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A Classified Balance Sheet

  • ไม่ลืมหรอกว่า Equation of Balance Sheet
    • Assets = L + O

Asset Section — Matrix, Inc. (Dec 31, 2025)


Current Assets:

  • Cash: $30,000
  • Notes receivable: $16,000
  • Accounts receivable: $60,000
  • Inventory: $70,000
  • Prepaid expenses: $4,000
  • Total current assets: $180,000

Non-Current Assets (Plant & Equipment):

  • Land: $150,000
    • สำคัญมาก ว่าไม่ต้องคำนวณ Depreciation ถูกมะ
  • Building 121,000−Accum.depreciation(121,000 − Accum. depreciation (10,000) = $111,000
  • Equipment & Fixtures 46,000−Accum.depreciation(46,000 − Accum. depreciation (27,000) = $19,000
  • Total plant & equipment: $280,000

Intangible Assets: (สินทรัพย์ที่จับต้องไม่ได้)

  • Patents: $170,000

Total Assets: $630,000

Liability & Stockholders' Equity Section


Current Liabilities:

  • Notes payable: $10,000
  • Accounts payable: $62,000
  • Income taxes payable: $16,000
  • Accrued expenses payable: $8,000
  • **Total current liabilities: 96,000∗∗ (slideshows96,000** _(slide shows 4,000 as a typo — actual sum is $96,000)_

Non-Current Liabilities:

  • Mortgage payable (due 25 years): $65,000
  • Bonds payable (due 15 years): $100,000
  • Total long-term liabilities: $165,000
  • Total liabilities: $265,000

Stockholders' Equity:

  • Capital stock (15,000 shares): $15,000
  • Retained earnings: $350,000 (กำไรสะสม)
  • Total stockholders' equity: $365,000

Total Liabilities & Stockholders' Equity: $630,000


Liquidity Ratios

  • Ability to pay short term liability/debt
    Data used: Babson Builders, Inc. 2025

ItemValue
Cash$30,000
Accounts receivable (beg.)$17,000
Accounts receivable (end)$20,000
Inventory (beg.)$10,000
Inventory (end)$15,000
Total current assets$65,000
Total current liabilities$42,000

Working Capital

  • Working capital is the excess of current assets over current liabilities.
  • Should be positive, higher is better!


Working Capital=Current Assets−Current Liabilities\boxed{\text{Working Capital} = \text{Current Assets} - \text{Current Liabilities}}
= $65,000 - $42,000 = $23,000

Analogy: How much "cushion" money does the company have after paying all bills due within a year?

Current Ratio

Current Ratio=Current AssetsCurrent Liabilities\boxed{\text{Current Ratio} = \frac{\text{Current Assets}}{\text{Current Liabilities}}}
= \frac{$65,000}{$42,000} = 1.55 : 1

Measures the short-term debt-paying ability. A ratio > 1 means the company can cover its short-term debts. Think of it as: "For every 1ofdebtduesoon,Ihave1 of debt due soon, I have 1.55 of assets."

Quick Ratio (Acid-Test Ratio)

Quick Ratio=Quick AssetsCurrent Liabilities\boxed{\text{Quick Ratio} = \frac{\text{Quick Assets}}{\text{Current Liabilities}}}
Quick Ratio=Quick AssetsCurrent Liabilities=Cash + Marketable Securities + ReceivablesCurrent Liabilities\boxed{\text{Quick Ratio} = \frac{\text{Quick Assets}}{\text{Current Liabilities}}=\frac{\text{Cash + Marketable Securities + Receivables}}{\text{Current Liabilities}}}

Where Quick Assets = Cash + Marketable Securities + Receivables (excludes inventory & prepaid expenses)

= \frac{$50,000}{$42,000} = 1.19 : 1

Like the current ratio but stricter — strips out inventory which may take time to sell. If the quick ratio drops below 1, the company may struggle to pay short-term debts quickly.


Measures of Profitability

Income statements can be prepared in two formats:

  • Single-step: Simpler — all revenues & gains listed, then all expenses & losses
  • Multiple-step: More detailed — shows gross margin, operating income, non-operating items separately

Income Statement (Multiple-Step) — Babson Builders, Inc.

Remember to compute EPS (Earnings per share - กำไรต่อหุ้น).

  • Interest Income มาจาก เงินเราเหลือ ให้คนอื่นยืมไป (Note Receivable) แล้วก็จะได้ Interest มา

  • Gain, เราซื้อ equipment มาใช้ หลังจากใช้ไปแล้ว 10 ปี เก่าละ (อาจจะเป็น โต๊ะ, เก้าอี้) ก็ขายทิ้ง

    • เราจะเอาไว้ตรงนี้ เพราะว่า profit ไม่ได้มาจาก product ที่เราขายตรง ๆ
  • ส่วนตรง Other expenses (Interst) - ก็อาจจะเป็น ที่เราไปกู้ธนาคารมา แล้วต้องจ่าย ดอกเบี้ย

Income Statement (Single-Step) — Babson Builders, Inc.


Profitability Ratios

Data used: Babson Builders, Inc. 2025

ItemValue
Ending market price per share$15.25
Common shares outstanding27,400
Net income$53,690
Total shareholders' equity (beg.)$180,000
Total shareholders' equity (end)$234,390
Revenues$494,000
Cost of sales$140,000
Total assets (beg.)$300,000
Total assets (end)$346,390

Earnings Per Share (EPS)

EPS=Net IncomeAverage Shares of Capital Stock Outstanding\boxed{\text{EPS} = \frac{\text{Net Income}}{\text{Average Shares of Capital Stock Outstanding}}}
= \frac{$53,690}{27,400} = $1.96

How much profit is attributed to each share. Investors use this to compare profitability across companies.

Price-Earnings (P/E) Ratio

P/E=Current Market Price per ShareEarnings Per Share (EPS)\boxed{P/E = \frac{\text{Current Market Price per Share}}{\text{Earnings Per Share (EPS)}}}
= \frac{$15.25}{$1.96} = 7.78

Shows the relationship between a company's earnings and its market price. A higher P/E means investors expect higher future growth.

Return on Assets (ROA)

ROA=Net IncomeAverage Total Assets\boxed{\text{ROA} = \frac{\text{Net Income}}{\text{Average Total Assets}}}
= \frac{$53,690}{($300,000 + $346,390) \div 2} = 16.61\%

Generally considered the best overall measure of profitability. Tells you how efficiently the company uses ALL its assets to generate profit. Higher = better.

Return on Equity (ROE)

ROE=Net IncomeAverage Total Equity\boxed{\text{ROE} = \frac{\text{Net Income}}{\text{Average Total Equity}}}
= \frac{$53,690}{($180,000 + $234,390) \div 2} = 25.91\%

Measures how well the company uses owner investments to earn income. Higher ROE than ROA indicates that financial leverage (debt) is amplifying returns to shareholders.

Dividend Yield

Dividend Yield=Dividends Per ShareMarket Price Per Share\boxed{\text{Dividend Yield} = \frac{\text{Dividends Per Share}}{\text{Market Price Per Share}}}
= \frac{$1.50}{$15.25} = 9.84\%

Identifies the return in terms of cash dividends on the current market price. Useful for income-focused investors.


Analysis by Long-Term Creditors

Data: Babson Builders, Inc. 2025

ItemValue
EBIT (Earnings before interest & taxes)$84,000
Interest expense$7,300
Total assets$346,390
Total stockholders' equity$234,390
Total liabilities$112,000

Note: EBIT = Earnings Before Interest and Taxes = also called Net Operating Income

Times Interest Earned (Interest Coverage Ratio)

  • The ability to pay ???
  • Higher the better - how many times can the company pay the interest expensees
    Times Interest Earned=Operating Income before Interest & Taxes (EBIT)Annual Interest Expense\boxed{\text{Times Interest Earned} = \frac{\text{Operating Income before Interest \& Taxes (EBIT)}}{\text{Annual Interest Expense}}}
    = \frac{$84,000}{$7,300} = 11.5 \text{ times}

The most common measure of a firm's ability to protect its long-term creditors. A higher number = safer for creditors. If this ratio approaches 1, the company barely earns enough to cover interest payments.

Debt Ratio

Debt Ratio=Total LiabilitiesTotal Assets\boxed{\text{Debt Ratio} = \frac{\text{Total Liabilities}}{\text{Total Assets}}}
= \frac{$112,000}{$346,390} = 32.33\%

Measures creditor's long-term risk. Smaller % = less risk for creditors (company relies less on debt). Think: "What fraction of everything we own was funded by borrowed money?"


Analysis by Short-Term Creditors

Data: Babson Builders, Inc. 2025

ItemValue
Cash$30,000
Accounts receivable (beg.)$17,000
Accounts receivable (end)$20,000
Inventory (beg.)$10,000
Inventory (end)$12,000
Total current assets$65,000
Total current liabilities$42,000
Sales on account$500,000
Cost of goods sold$140,000

Accounts Receivable Turnover Rate

AR Turnover=Net SalesAverage Accounts Receivable\boxed{\text{AR Turnover} = \frac{\text{Net Sales}}{\text{Average Accounts Receivable}}}
= \frac{$500,000}{($17,000 + $20,000) \div 2} = 27.03 \text{ times}

Measures how many times a company converts its receivables into cash each year. Higher = better — customers are paying faster, less cash is tied up.

Inventory Turnover Rate

  • ยิ่งสูงยิ่งดี — ถ้าต่ำ = สินค้าค้างสต็อก ขายไม่ออก
    Inventory Turnover=Cost of Goods SoldAverage Inventory\boxed{\text{Inventory Turnover} = \frac{\text{Cost of Goods Sold}}{\text{Average Inventory}}}
    = \frac{$140,000}{($10,000 + $12,000) \div 2} = 12.73 \text{ times}

Measures how many times merchandise inventory is sold and replaced during the year. Higher = faster-moving goods = efficient inventory management.


Operating Cycle

The operating cycle flows through three stages:

Cash → (1. Purchase of Merchandise) → Inventory
     → (2. Sale on Account)         → Accounts Receivable
     → (3. Collection)              → Cash

Analogy: Think of it like a food stall — you spend cash to buy ingredients (inventory), sell to customers on credit, then collect cash from them. The faster the cycle, the healthier the cash flow.


Summary: Key Ratios Quick Reference

RatioFormulaWhat It Measures
Working CapitalCurrent Assets − Current LiabilitiesShort-term financial cushion
Current RatioCurrent Assets ÷ Current LiabilitiesShort-term debt-paying ability
Quick RatioQuick Assets ÷ Current LiabilitiesImmediate liquidity (no inventory)
EPSNet Income ÷ Avg. Shares OutstandingProfit per share
P/E RatioMarket Price ÷ EPSMarket valuation vs. earnings
ROANet Income ÷ Avg. Total AssetsOverall profitability efficiency
ROENet Income ÷ Avg. Total EquityReturn to shareholders
Dividend YieldDividends/Share ÷ Market Price/ShareCash return to investors
Times Interest EarnedEBIT ÷ Interest ExpenseAbility to cover interest payments
Debt RatioTotal Liabilities ÷ Total AssetsLong-term creditor risk
AR TurnoverNet Sales ÷ Avg. ARReceivables collection speed
Inventory TurnoverCOGS ÷ Avg. InventoryInventory selling speed

Net sale vs net icome? เลือกอะไร เวลาเปิด แนทยฟืั