Slide 1 — Inventory and COGS Overview(第1页——存货与销货成本概览)

Knowledge Points(知识点)

  1. How inventory connects the Balance Sheet and Income Statement 存货如何连接资产负债表与损益表
  2. Goods Available for Sale: the cost pool shared by EI & COGS 可供销售商品:期末存货与销货成本共享的成本池
  3. Ending Inventory vs. COGS: opposite directional relationship 期末存货与销货成本的反向关系及其会计影响

🔹Knowledge Point 1 — Inventory as the link between B/S and I/S

Explanation(解释) Inventory is a current asset reported on the Balance Sheet. 存货是资产负债表上的流动资产。 COGS is an expense reported on the Income Statement. 销货成本是损益表上的费用。

Inventory serves as the bridge between the two statements because: 存货是两张报表之间的“桥梁”,原因是:

  • Beginning Inventory (BI) is last period’s Ending Inventory (EI) 期初存货来自上一期的期末存货
  • The cost of goods purchased enters the cost pool this period 本期的进货进入成本池
  • Goods either remain as EI or flow out as COGS 商品不是作为期末存货留下,就是作为销货成本被费用化

因此,存货决定了本期费用确认的多少,直接影响净利润。

Example(例子) If BI = 3,000 and Purchases = 7,000, Goods Available = 10,000. 如果期初 3,000,进货 7,000,则可供销售商品为 10,000。 无论后续如何分配,这 10,000 必须完全进入 EI 或 COGS。

Extension(拓展) Inventory affects several financial ratios: 存货影响多个重要财务比率:

  • Current ratio(流动比率)
  • Gross profit margin(毛利率 = (Sales − COGS)/Sales)
  • Inventory turnover(存货周转率 = COGS / Average Inventory)

If EI is overstated → assets overstated → profitability overstated → turnover understated. 若期末存货被高估 → 资产被高估、利润被高估、周转率被低估。

Image/Data Analysis(图像分析) PPT 图示显示三步流向:

  1. Beginning Inventory
    • Purchases
  2. = Goods Available for Sale

图中红色箭头向下分流至:

  • Ending Inventory(资产负债表)
  • COGS(损益表)

图解强调:成本的最终去向只有两个:要么留存(EI),要么费用化(COGS)。

Summary(总结) Inventory determines how much cost remains as an asset and how much becomes an expense. 存货决定成本是留在资产负债表还是进入损益表成为费用。


🔹Knowledge Point 2 — Goods Available for Sale (GAFS)

Explanation(解释) GAFS is the total cost of all items that could possibly be sold during the period. 可供销售商品代表本期所有可能售出的商品总成本。

公式: Goods Available for Sale = Beginning Inventory + Purchases 可供销售商品 = 期初存货 + 本期进货

此数值是一个 成本池(cost pool),必须在期末分配为 EI 与 COGS。

Example(例子) BI = 5,000 Purchases = 15,000 GAFS = 20,000

Even if only part of these goods are sold, the entire cost must be allocated. 即便本期只卖掉一部分,这 20,000 的成本必须被完全分配到 EI 或 COGS。

Extension(拓展) 企业会通过管理采购节奏、谈判折扣、提前采购等来影响 GAFS。 如果采购量大但销售不佳,GAFS 就会大幅提高,可能导致更多成本留在 EI 中,从而影响利润表现。

Image/Data Analysis(图像分析) PPT 底部蓝框强调两个核心公式:

  • Beginning Inventory + Purchases = Goods Available
  • Goods Available − Ending Inventory = COGS

这是整个存货系统的基础逻辑:进入成本池 → 分配流转 → 报表影响

Summary(总结) GAFS is the fixed pool of costs for the period; EI and COGS simply divide it. 可供销售商品是本期固定的成本池,期末存货和销货成本只是在分配这一个池子。


🔹Knowledge Point 3 — Ending Inventory vs. COGS Allocation

Explanation(解释) Ending Inventory (EI) is unsold cost remaining on the Balance Sheet. 期末存货是未售出的成本,留存在资产负债表中。 COGS is the portion of cost that has been sold and expensed. 销货成本是已售出并费用化的部分。

EI 与 COGS 呈 完全反向关系

  • EI 高 → COGS 低 → Net Income 高
  • EI 低 → COGS 高 → Net Income 低

Example(例子) GAFS = 20,000 EI = 8,000 COGS = 12,000 如果 EI 错误地记成 10,000 → 则 COGS 会从 12,000 变为 10,000 → 当期利润被高估。

Extension(拓展) 存货错误带来的影响具有 跨期效应(interperiod impact): 第 1 年期末存货高估 → 第 1 年利润高估 但第 2 年期初存货也被高估 → 第 2 年 COGS 高估 → 第 2 年利润低估 → 两期合起来通常会抵消。

Image/Data Analysis(图像分析) PPT 图里 EI 与 COGS 两个框分布在 GAFS 下方,红色双向箭头说明 EI + COGS = GAFS 必须完全耗尽。 图示强调:期末存货越大,销货成本的红色箭头向下越短。

Summary(总结) Ending inventory stays as an asset; COGS becomes an expense. Their relationship is inverse and affects profit. 期末存货保留为资产,销货成本进入费用,两者呈反向变化并影响利润水平。



Slide 2 — Periodic vs. Perpetual Inventory System(第2页——定期制与永续制存货系统)

Knowledge Points(知识点)

  1. Key conceptual differences between periodic and perpetual systems 定期制与永续制的概念性差异
  2. Recording purchases and updates to inventory 进货记录与存货更新方式的差异
  3. Measurement of Ending Inventory and COGS under each system 不同系统下期末存货与销货成本的计量方式

🔹Knowledge Point 1 — Conceptual Differences

Explanation(解释) Periodic system(定期制)

  • Inventory records not updated during the period
  • Inventory only adjusted at period end
  • Requires physical count to determine EI and COGS

Perpetual system(永续制)

  • Inventory updated continuously
  • Every purchase and sale immediately updates Inventory
  • COGS recorded at the moment of sale

Example(例子) 一家小便利店使用定期制,只在月底盘点一次存货;大型连锁商场使用永续制,每次扫码都会更新存货和 COGS。

Extension(拓展) 永续制与技术系统(如 ERP、POS)高度结合,可实时监控 shrinkage(存货损耗)与 theft(盗窃),增强内部控制。 定期制虽然成本低,但不利于实时决策。

Image/Data Analysis(图像分析) 表格中 “Measured at every sale” 与 “Computed as residual amount” 清晰对比 COGS 的确定方式:

  • 定期制:COGS = BI + Purchases − EI
  • 永续制:系统每笔销售同时记录 COGS(使用商品成本信息)

Summary(总结) Periodic = low cost, low accuracy; Perpetual = high cost, high accuracy. 定期制:低成本低准确;永续制:高成本高准确。


🔹Knowledge Point 2 — Purchases Recording

Explanation(解释) Periodic system uses a separate Purchases account. 定期制使用“进货”账户,期末再将其结转进存货。 Perpetual system directly debits Inventory. 永续制直接借记存货,每次进货自动增加库存数量与成本。

Example(例子) 购买商品 $2,000:

  • Periodic: Dr Purchases 2,000
  • Perpetual: Dr Inventory 2,000

Extension(拓展) 永续制可搭配不同的成本流假设(FIFO、LIFO)进行实时计算,而定期制在期末才根据方法调整 EI 和 COGS。

Image/Data Analysis(图像分析) 表格中 Purchases 一行的黄色栏显示: Periodic → Accumulated in Purchases Perpetual → Accumulated in Inventory

这表明两者账户结构不同,影响试算平衡表和期末结账过程。

Summary(总结) Periodic separates Purchases from Inventory; Perpetual integrates them. 定期制分离进货与存货;永续制合并为存货直接更新。


🔹Knowledge Point 3 — EI & COGS Measurement

Explanation(解释) Periodic:

  • Must count physical inventory at period end
  • COGS is a residual, meaning it is computed rather than directly recorded

Perpetual:

  • System updates EI continuously
  • COGS recorded per sale → provides real-time gross profit monitoring

Example(例子) 定期制下,如果期末未盘点,无法知道真实 COGS;永续制则可当日查看毛利率、库存量。

Extension(拓展) 库存差异(如损耗、破损)在永续制中会以 “inventory shrinkage expense” 反映,而定期制必须通过盘点差异来识别。

Image/Data Analysis(图像分析) 表格最后两行展示:

  • EI: Periodic → measured at end
  • EI: Perpetual → always updated
  • COGS: Periodic → computed
  • COGS: Perpetual → measured

显著体现永续制的实时性与定期制的滞后性。

Summary(总结) Periodic relies on end-of-period counting; perpetual tracks cost flows continuously. 定期制依赖期末盘点;永续制依赖实时成本流追踪。


Slide 3 — Lower of Cost or Market (LCM)

(第3页——成本与市价孰低法)

Knowledge Points(知识点)

  1. Conservatism principle in inventory valuation(谨慎性原则在存货计价中的应用)
  2. LCM rule structure & market definition(LCM 规则与“市价”的定义)
  3. Write-down mechanics & financial statement effects(跌价处理与报表影响)
  4. Replacement cost vs. NRV vs. ceiling/floor(重置成本、可变现净值、上限与下限)

🔹Knowledge Point 1 — Conservatism Principle

Explanation(解释) Conservatism requires companies to avoid overstating assets or income. 谨慎性原则要求企业不能高估资产或利润。

LCM applies this by ensuring that inventory is not reported above the economic value at which it can be replaced or sold. LCM 通过“不能高于其实际经济价值”来体现谨慎性。

Example(例子) Inventory cost 100 Market value 70 → Must record inventory at 70 → Recognize loss 30

Extension(拓展) 过度谨慎会造成利润偏低,但遵循准则(US GAAP / IFRS)可以避免企业操纵利润:

  • 不得随意调低估计市价
  • IFRS 使用 LCNRV(成本与可变现净值孰低法),概念更严格

Image/Data Analysis(图像分析) PPT 的公式: Inventory value = min(Cost, Market / “replacement cost”) 强调市价通常是 replacement cost(重置成本),但 GAAP 有时要求考虑 “ceiling/floor”。

Summary(总结) LCM prevents overstated inventory and requires early recognition of losses. LCM 防止存货高估并要求及时确认损失。


🔹Knowledge Point 2 — LCM Rule: How Market Is Defined

Explanation(解释) Under U.S. GAAP, “Market” is not simply replacement cost; it must fall within: GAAP 下,“市价”并非单一重置成本,而需落在:

  • Ceiling = NRV(可变现净值)
  • Floor = NRV − Normal profit margin(扣除正常利润后的净值)
  • Market = Replacement cost restricted by ceiling & floor

Example(例子) Cost = 100 Replacement cost = 80 NRV = 90 NRV − profit margin = 60

→ “Market” must be between 60–90 → Replacement cost 80 is allowed → LCM = min(100, 80) = 80

Extension(拓展) IFRS 不使用 ceiling/floor,而是采用直接可变现净值(NRV)。 IFRS 的 LCNRV 更接近经济价值,与售价相关;GAAP 的 LCM 更强调谨慎性。

Image/Data Analysis(图像分析) 虽然 PPT 只写 replacement cost,但实际上 GAAP 的 “market” 需要检查: RC 是否落在 [floor, ceiling] 区间。

Summary(总结) Market = replacement cost but limited by NRV and NRV − profit margin. 市价以重置成本为主,但必须落在可变现净值上下限之间。


🔹Knowledge Point 3 — Write-down Mechanics & FS Effects

Explanation(解释) When LCM < cost → Recognize inventory write-down 当市价低于成本时 → 计提存货跌价准备

Entry: Dr Loss on write-down Cr Inventory

Example(例子) Write-down 30 → decreases assets and net income. 跌价 30 → 降低资产与利润。

Extension(拓展) Effects on financial statements:

  • Balance Sheet(资产负债表) ↓ Inventory
  • Income Statement(利润表) ↑ expense → ↓ net income
  • Cash Flow Statement 属于非现金费用 → 不影响现金流
  • Profitability ratios ↓ Gross margin ↓ ROA

Image/Data Analysis(图像分析) LCM 会使 Inventory 下降,进而导致 COGS 上升(若采用直接替代法)。

Summary(总结) Write-downs reduce inventory and profits but do not affect cash. 跌价减少存货与利润,但不影响现金流。



Slide 4 — Long-term Assets Overview(第4页——长期资产概览)

Knowledge Points(知识点)

  1. Classification: Tangible vs Intangible(有形与无形分类)
  2. Characteristics of long-term assets(长期资产特征)
  3. Capitalization principles(资本化原则)

🔹Knowledge Point 1 — Tangible vs. Intangible

Explanation(解释) Tangible: physical, depreciable except land 无形资产不可触摸,包括商标、版权、专利、软件、商誉。

Intangible assets may have finite or indefinite useful lives. 无形资产可以有有限或无限寿命。

Example(例子) Tangible: building, machine Intangible: 10-year patent, perpetual trademark

Extension(拓展) 企业价值中,无形资产比重越来越高,尤其在科技行业(brand equity, algorithms, data)。 但 GAAP 对内部生成无形资产限制严格,多数不得资本化。

Image/Data Analysis(图像分析) PPT 将 Tangible / Intangible 清晰分成两类,强调概念性区分。

Summary(总结) Long-term assets can be physical or non-physical and provide multi-period benefits. 长期资产包括有形和无形两类,能带来多个期间的经济利益。


🔹Knowledge Point 2 — Capitalization of Acquisition Costs

Explanation(解释) Capitalization means recording a cost as an asset rather than an expense. 资本化是将成本计入资产,而非立即费用化。

Must include all cost required to acquire and prepare the asset for intended use. 包括所有为使资产达到可使用状态的必要支出。

Example(例子) Equipment cost 50,000 Shipping 2,000 Installation 3,000 → Capitalized total = 55,000

Extension(拓展) 从税务角度,资本化后折旧可用于税前扣除;过度资本化会导致利润被高估,因此外部审计会重点审查资本化政策。

Image/Data Analysis(图像分析) PPT bullet “capitalize all necessary acquisition costs” 强调资本化范围较广,但必须合理。

Summary(总结) Only costs that produce future economic benefit can be capitalized. 只有带来未来经济利益的支出才能资本化。



Slide 5 — Subsequent Expenditures & Useful Life(第5页——后续支出与使用期间)

Knowledge Points(知识点)

  1. Capitalize or expense criteria(资本化 vs 费用化的判断)
  2. Depreciation of tangible assets(有形资产折旧)
  3. Amortization & impairment of intangibles(无形资产摊销与减值)

🔹Knowledge Point 1 — Subsequent Expenditure: Capitalize or Expense

Explanation(解释) Routine repairs → expense Major improvements → capitalize

Example(例子) Replace roof (extends life) → capitalize Fix leak (maintenance) → expense

Extension(拓展) 费用化减少利润;资本化增加利润并推迟费用确认。 因此,资本化政策对盈余管理有重大影响(SEC 常调查)。

Image/Data Analysis(图像分析) PPT 提出“Capitalize or expense?”,提醒学生判断标准的重要性。

Summary(总结) Only expenditures that improve the asset beyond its original condition should be capitalized. 只有改善资产状况的支出应资本化。


🔹Knowledge Point 2 — Depreciation of Tangible Assets

Explanation(解释) Depreciation allocates cost over useful life, not market value decline. 折旧是成本分摊,而非反映市场价格变化。

Example(例子) (cost − residual)/life = annual depreciation (成本 − 残值)/寿命 = 年折旧

Extension(拓展) 折旧方法不同会影响利润、资产周转、税负等。 加速折旧(如 DDB)前期费用高 → 减少前期利润 → 节税。

Image/Data Analysis(图像分析) PPT 中将有限寿命 / 无限寿命资产严格区分,体现 GAAP 分类。

Summary(总结) Depreciation reflects the consumption of economic benefit, not value. 折旧反映经济利益消耗。


🔹Knowledge Point 3 — Amortization & Impairment of Intangibles

Explanation(解释) Finite-life intangibles → amortized Indefinite-life → only impairment tested

Example(例子) Patent 10-year → amortize straight-line Goodwill → impairment only

Extension(拓展) 商誉减值常见于重大收购失败、经济衰退、市场份额下降等情况;影响利润巨大。

Image/Data Analysis(图像分析) PPT 将 intangible 与 tangible 并列说明,强调寿命差异。

Summary(总结) Intangibles with finite life are amortized; indefinite intangibles are impairment-tested. 有限寿命摊销;无限寿命减值。



Slide 6 — Depreciation Methods & Estimate Changes

(第6页——折旧方法与估计变更)

Knowledge Points(知识点)

  1. Three major depreciation methods(折旧方法)
  2. Required inputs(折旧计算的输入)
  3. Accounting for estimate changes(估计变更的会计处理)
  4. Impact on financial statements(报表影响)

🔹Knowledge Point 1 — Depreciation Methods

Explanation(解释) Straight-line → equal expense Units-of-production → usage-based Accelerated → higher early depreciation

Example(例子) Units-of-production: Dep = (cost − residual) × (units used ÷ total units)

Extension(拓展) 折旧方法影响:

  • 毛利率
  • EBIT
  • 税负
  • ROA 早期高折旧可减少税负,是企业战略选择之一。

Image/Data Analysis(图像分析) PPT 列出三种方法,强调不同方法的费用时序差异。

Summary(总结) Different methods reflect different consumption patterns of asset value. 折旧方法反映不同的资产消耗模式。


🔹Knowledge Point 2 — Inputs for Depreciation

Explanation(解释) Depreciation requires:

  • Cost(取得成本)
  • Useful life(使用寿命)
  • Residual value(残值)

Example(例子) Changing residual value from 5,000 to 2,000 increases annual depreciation.

Extension(拓展) 估计不准确会导致重大差异,因此管理层在寿命和残值估计上可能存在主观判断空间(earnings management risk)。

Image/Data Analysis(图像分析) PPT 中列出 inputs,强调估计的重要性。

Summary(总结) Reliable depreciation depends on reasonable and supportable estimates. 折旧依赖合理估计。


🔹Knowledge Point 3 — Changes in Estimates

Explanation(解释) GAAP uses prospective method: Do NOT restate prior periods. Adjust future depreciation only.

Example(例子) Remaining NBV = 60,000 New remaining life = 4 years → New depreciation = 15,000 per year

Extension(拓展) 估计变更常见于:技术更新、资产损耗严重、使用方式改变。 与 prior-period error(前期重大错误)完全不同。

Image/Data Analysis(图像分析) PPT 强调 “Update NBV first!” → 先算剩余账面价值,再更新时间与残值。

Summary(总结) Estimate changes affect only future depreciation, not the past. 估计变更只影响未来折旧。


Slide 7 — Impairment of Long-term Assets (第7页——长期资产减值)

Knowledge Points(知识点)

  1. When impairment is required(何时需要减值测试)
  2. Two-step impairment process(两步减值过程)
  3. Recoverable amount: FVLCOD vs. VIU(可收回金额的两种构成)
  4. Impact on financial statements & accounting entries(报表影响与会计分录)

🔹Knowledge Point 1 — When Impairment is Required

Explanation(解释) Impairment occurs when the carrying amount (账面价值) of an asset exceeds its recoverable amount(可收回金额)——即该资产未来经济利益不足以支持其账面价值。

Typical indicators: 常见迹象包括:

  • Major decline in market value(市价显著下降)
  • Obsolescence / physical damage(过时或物理损坏)
  • Worse-than-expected performance(业绩恶化)
  • Regulatory changes reducing asset use(政策变化导致可用性下降)

Example(例子) A machine bought for 100,000 with NBV 60,000 shows severe performance decline → need impairment test. 机器 NBV60,000 但产能下降 → 必须减值测试。

Extension(拓展) For certain intangible assets with indefinite useful life (如商誉、无限寿命商标),IFRS 要求 每年 进行完整的减值测试。

Image/Data Analysis(图像分析) PPT bullet 2: “always needs full impairment test” → 指无限寿命无形资产必须年度测试,而非等待触发事件。

Summary(总结) Impairment testing is mandatory when value likely declines or for indefinite-life intangibles annually. 当资产价值下降或无形资产为无限寿命时必须测试减值。


🔹Knowledge Point 2 — Two-step Impairment Process

Explanation(解释) Step 1: Determine Recoverable Amount(可收回金额) 计算 recoverable amount: recoverable amount = max(FVLCOD, VIU) 可收回金额 = 公允价值减去处置成本 与 使用价值 两者中的较高者。

Step 2: Compare Carrying Amount vs. Recoverable Amount 若 carrying amount > recoverable amount → Impairment Loss 若账面价值 > 可收回金额 → 发生减值损失

Example(例子) Carrying amount = 80,000 FVLCOD = 50,000 VIU = 60,000 → recoverable amount = 60,000 Impairment = 80,000 − 60,000 = 20,000

Extension(拓展) 使用价值(VIU)常使用 未来现金流折现(DCF)。 公允价值需考虑市场退出成本、出售佣金等。

Image/Data Analysis(图像分析) PPT 流程图:

  • Current Carrying Amount vs.
  • Recoverable Amount(取 FVLCOD 与 VIU 中较高者) → New Carrying Amount = lower of the two

清晰展示: New carrying amount = min(CA, recoverable amount)

Summary(总结) Impairment loss = CA − Recoverable Amount, where recoverable = max(FVLCOD, VIU). 减值损失 = 账面价值 − 可收回金额。


🔹Knowledge Point 3 — Accounting Entries & FS Effects

Explanation(解释) Entry: Dr Impairment Loss (expense) Cr Asset / Accumulated Impairment

Example(例子) Impairment loss 20,000: Dr Impairment Loss 20,000 Cr Equipment 20,000

Extension(拓展) Financial Statement Impact:

  • Balance Sheet: assets ↓
  • Income Statement: impairment loss ↑ → net income ↓
  • Cash Flow Statement: no cash impact (non-cash expense)
  • Ratios: ROA ↓, profit margin ↓

Image/Data Analysis(图像分析) PPT 图示红色文字 “impairment loss” 强调损失部分。

Summary(总结) Impairment reduces asset value and profit but does not affect cash. 减值降低资产和利润,但不影响现金流。



Slide 8 — Disposal of Long-term Assets (第8页——长期资产处置)

Knowledge Points(知识点)

  1. Disposal by sale(通过出售处置资产)
  2. Gain or loss calculation(损益计算)
  3. MUST update NBV before disposal(处置前必须更新账面价值)

🔹Knowledge Point 1 — Disposal by Sale

Explanation(解释) 资产出售的损益取决于收到的现金(或对价)与账面价值(NBV)之间的差额:

  • Cash > BV → Gain(收益)
  • Cash < BV → Loss(损失)
  • Cash = BV → No gain/loss

Example(例子) NBV = 40,000 Cash received = 50,000 Gain = 10,000

Extension(拓展) 若资产已完全折旧但仍能出售→ 全部收入计入 gain。 若涉及贸易方式处置(trade-in),需同时处理旧资产处置与新资产取得。

Image/Data Analysis(图像分析) PPT 的桃红色框明确给出: If Cash > BV → gain If Cash < BV → loss

Summary(总结) Asset sale gain/loss = Cash received − NBV 资产出售损益 = 收到的现金 − 账面价值。


🔹Knowledge Point 2 — Update NBV Before Disposal

Explanation(解释) Before computing gain/loss, NBV must reflect:

  • Depreciation to the disposal date
  • Any impairment previously recognized

Example(例子) Asset cost 100,000 Accumulated depreciation at disposal date = 70,000 NBV = 30,000 若忽略折旧 → 计算的损益会完全错误。

Extension(拓展) 未更新 NBV 是考试常见陷阱,会导致 gain/loss error。

Image/Data Analysis(图像分析) PPT 黄色 bullet: “Remember to update NBV first!”

Summary(总结) Correct gain/loss calculation requires accurate NBV at disposal. 正确计算损益必须先更新账面价值。



Slide 9 — Introduction to Liabilities(第9页——负债概论)

Knowledge Points(知识点)

  1. Current vs. noncurrent liabilities(流动负债与长期负债)
  2. Interest calculation for notes payable(应付票据的利息计算)
  3. Contingent liabilities: recognition vs. disclosure(或有负债:确认 vs 披露)

🔹Knowledge Point 1 — Current Liabilities

Explanation(解释) Current liabilities are obligations due within one year or the operating cycle. 流动负债为一年或营业周期内需偿还的债务。

Examples: accounts payable, wages payable, short-term notes. 例子:应付账款、工资应付、短期票据等。

Example(例子) Company must pay 30,000 suppliers within 60 days → AP = current liability.

Extension(拓展) 相关财务指标:

  • Current ratio = CA / CL
  • Working capital = CA − CL

Image/Data Analysis(图像分析) PPT 提到 current ratio 与 working capital,强调流动性。

Summary(总结) Current liabilities must be paid within a short period and affect liquidity ratios. 流动负债在短期偿还,影响企业偿债能力。


🔹Knowledge Point 2 — Noncurrent Liabilities & Interest

Explanation(解释) Noncurrent liabilities extend beyond one year (e.g., long-term notes payable). 长期负债期限超过一年。

Interest formula: Interest = Beginning outstanding debt × interest rate × time 利息 = 期初未偿债务 × 利率 × 期间

Example(例子) Beg debt 10,000; rate 6%; 6 months: Interest = 10,000 × 0.06 × 1/2 = 300

Extension(拓展) 有效利率法(effective interest method)会在长期债务中使用。

Image/Data Analysis(图像分析) PPT 列出利息公式,强调期初余额的重要性(not average)。

Summary(总结) Interest expense arises from the time value of money and applies to long-term liabilities. 利息费用体现货币时间价值。


🔹Knowledge Point 3 — Contingent Liabilities

Explanation(解释) Contingent liabilities depend on future uncertain events. 或有负债取决于未来不确定事件。

GAAP 分三类:

  • Probable(可能) → 若可估计则确认负债
  • Reasonably possible(合理可能) → 披露
  • Remote(极小可能) → 无需披露

Example(例子) Lawsuit likely loss = 50,000 → probable & estimable → record liability

Extension(拓展) 若无法估计金额但事件 probable → 不确认负债,但必须详细披露。

Image/Data Analysis(图像分析) PPT 的 3×2 矩阵展示概率与可估计性两维判断,非常考试重点。

Summary(总结) Contingent liabilities follow probability + estimability to determine record vs disclosure. 或有负债根据“概率 + 可估计性”判断确认或披露。



Slide 10 — Time Value of Money(第10页——货币时间价值)

Knowledge Points(知识点)

  1. Present value (PV) vs Future value (FV)(现值与终值)
  2. Single amount vs annuity(单笔 vs 年金)
  3. Effect of compounding(复利影响)

🔹Knowledge Point 1 — PV & FV Concepts

Explanation(解释) Present value converts future cash flows into today’s value. 现值将未来现金折算为今天价值。

Future value shows how much today’s money grows. 终值表示今天的钱未来会变成多少。

Example(例子) 100 invested at 10% → FV1 = 110 折现:110 / 1.10 = PV100

Extension(拓展) Time value of money forms foundation for:

  • Bond pricing
  • Lease accounting
  • Capital budgeting
  • Retirement planning

Image/Data Analysis(图像分析) PPT 图展示货币沿时间轴增长(未来值更大)。

Summary(总结) Time value of money reflects that money today is worth more than money in the future. 货币时间价值反映今天的钱比未来更值钱。



Slide 11 — Bond Valuation(第11页——债券计量)

Knowledge Points(知识点)

  1. Discount vs premium(折价与溢价)
  2. PV of interest payments + PV of principal(利息现值 + 本金现值)
  3. Effective interest method logic(有效利率法逻辑)

🔹Knowledge Point 1 — Discount Bond Example

Explanation(解释) Company A purchases a debt instrument at discount (fair value < face value). 折价购买:公允价值 1,000 < 面值 1,250。

Example(例子) Cash flows:

  • Annual interest = 1,250 × 4.7% = 59
  • Final year = 59 + 1,250 principal

PV = 59×PVIFA(10%,5) + 1,250×PVIF(10%,5) = 59×3.79079 + 1,250×0.62092 = 1,000(与公允价值一致)

Extension(拓展) 折价意味着市场要求的利率(有效利率)高于票面利率: market rate 10% > stated 4.7%

此种情况常见于:

  • 利率上升
  • 债券发行人信用风险上升
  • 市场流动性不足

Image/Data Analysis(图像分析) PPT 通过黄色时间线展示五次利息与最终本金的现金流,再用 PV 公式得到当前价格。

Summary(总结) Bond value equals the present value of all future interest + principal discounted at market rate. 债券价值 = 利息现值 + 本金现值。