Expense Manipulation Analysis

Complete SKILL.md

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---
name: expense-manipulation-analysis
description: Analyze expense manipulation techniques including expense deferral, cost concealment, and "big bath" accounting. Use when investigating potential earnings management through expense manipulation.
---

# Expense Manipulation Analysis

Identify and analyze expense manipulation techniques used to manage or manipulate reported profits.

## When to Use
- Investigating companies with suspicious profit patterns
- Analyzing companies with sudden profit improvements
- Reviewing companies with alternating profit/loss patterns
- Conducting forensic accounting analysis

## Basic Principle

**Profit = Revenue - Expenses**

Expense adjustment is relatively "gentle" compared to revenue manipulation because:
- More restrictions on expense adjustments
- Limited adjustment amplitude
- Primarily表现为虚减费用, rarely 虚增费用

## Expense Understatement Detection

### Deferring Current Period Expenses to Future

**Extended depreciation and amortization periods:**
- Increasing useful life of assets beyond reasonable estimates
- Reduces periodic depreciation and amortization expense

**Ignoring formed bad debt losses:**
- Not recognizing bad debts that have already occurred
- Maintaining receivables at book value despite uncollectibility

**Inappropriate expense capitalization:**
- Capitalizing expenses that should be expensed immediately
- Common targets: research costs, maintenance expenses, interest

**No impairment for damaged or obsolete inventory:**
- Failing to write down impaired assets
- Not recognizing inventory obsolescence

**Expenses temporarily recorded in AR or prepayments:**
- Recording expenses as receivables or prepaid expenses
- Deferring recognition to future periods

**Delayed construction in progress conversion:**
- Postponing conversion of CIP to fixed assets
- Recording daily operating expenses in CIP
- Avoids depreciation expense

**Temporary fund offset to disguise bad debts:**
- Using temporary funds to offset long-aged bad debts
- Disguising old bad debts as newly formed receivables
- Reduces bad debt provision ratio

### Concealing Costs or Losses

**Understating raw material costs:**
- Common technique: Naming raw materials with different prices differently
- Evading inventory exit accounting policies
- Calculating using low-cost raw materials first
- Reduces current cost of goods sold

**Understating financial expenses:**
- Example: Not recording interest on funds lent externally (ZGCH company)

**Understating selling and administrative expenses:**
- Example: Recording commission rebates without invoices as prepayments
- Later returning funds to company as "recovery" (KZYY company)

**Concentrating losses in subsidiaries:**
- Concentrating losses and bad debts of many subsidiaries in one subsidiary
- Selling packaged to conceal losses

## Expense Overstatement Detection ("Big Bath")

### Common Techniques

**Asset or inventory write-offs:**
- Writing off assets or inventory
- Reduces future depreciation or increases future inventory gains

**Large bad debt or inventory impairment provisions:**
- Large provisions for future reversal
- Creates reserve for future profit manipulation

**Classifying recurring expenses as one-time expenses:**
- Moving recurring expenses to one-time provisions
- Reduces future period expenses

### Motivations and Scenarios

**Destroying evidence (毁尸灭迹):**
- Writing off previously inflated profits
- Example: ZGGH company alternating profit and loss years to avoid ST status
- Avoids inflated numbers becoming too obvious

**Future statement beautification:**
- Typically occurs after company acquisition or management change
- New management: shifting blame to predecessors, starting fresh
- Current management in distress: "breaking the jar" to seek next year's growth rate

**Shareholder bearing expenses:**
- Controlling shareholders or related parties bearing company expenses
- Using P/E ratio leverage to increase market value
- Bearing 1 yuan of expense increases market value by tens of yuan

**Self-incrimination (自污):**
- Proactively admitting previous financial statement problems
- Accounting policy errors or mistakes
- Retrospective adjustment of statements
- Adjusting current period expenses to previous years

## Detection Indicators

### Expense Ratio Analysis
- Selling and administrative expenses as percentage of revenue
- Compare to historical trends and industry peers
- Significant declines without business justification = red flag

### Depreciation and Amortization
- Changes in depreciation methods or useful lives
- Compare to industry practices
- Extended periods without justification = manipulation

### Asset Impairment
- Sudden large impairment charges
- Pattern of alternating large and small provisions
- May indicate "big bath" or reserve creation

### Bad Debt Provisions
- Provision ratios compared to peers
- Aging analysis of receivables
- Fixed percentage regardless of aging = manipulation

### Construction in Progress
- Extended periods without conversion to fixed assets
- Large and growing CIP balances
- May contain capitalized expenses

## Investigation Procedures

1. **Review accounting policies** for changes in depreciation, amortization, and provisioning
2. **Analyze expense trends** compared to revenue and business activity
3. **Verify asset ages** and condition for impairment assessment
4. **Check CIP conversion timing** and justification for delays
5. **Review related party transactions** for expense sharing arrangements
6. **Analyze bad debt aging** and provision adequacy
7. **Compare to industry peers** for all major expense categories
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## Source Provenance

- Collection: `手把手教你读财报`
- Archive: `手把手教你读财报.zip`
- Source file: `../_sources/手把手教你读财报.md`
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