A-Level CAIE Accounting: Quick Reference Formula & Theorem Handbook | A-Level CAIE 会计：公式定理速查手册

📚 A-Level CAIE Accounting: Quick Reference Formula & Theorem Handbook | A-Level CAIE 会计：公式定理速查手册

Welcome to your essential quick reference handbook for the CAIE A-Level Accounting syllabus. This guide brings together the most important formulas, ratios and theoretical rules you need to revise before the exam. Each formula is clearly stated and followed by a brief explanation in both English and Chinese. Use this as a daily companion to reinforce your understanding of financial statements, ratio analysis, costing and budgeting.

欢迎使用这份为你准备的 CAIE A-Level 会计速查手册。本指南汇总了考前必须复习的重要公式、比率和理论规则。每一条公式都清晰列出，并附有简短的中英双语解释。把它当作你的每日伙伴，巩固你对财务报表、比率分析、成本计算和预算管理的理解。

1. The Accounting Equation | 会计等式

The accounting equation is the foundation of double-entry bookkeeping. It states that a business’s resources (assets) are financed either by borrowing (liabilities) or by the owner’s investment (capital/equity).

会计等式是复式记账的基础。它表明企业的资源（资产）要么通过借债（负债）获得，要么通过所有者投资（资本/权益）获得。

Assets = Liabilities + Equity

This equation must always balance after every transaction. When revenue or expenses are introduced, the expanded equation becomes: Assets = Liabilities + Capital + (Revenue – Expenses).

每一笔交易发生后，该等式必须始终保持平衡。引入收入和费用后，扩展的等式变为：资产 = 负债 + 资本 + (收入 – 费用)。

Always remember that drawings reduce capital, and profit increases capital. In a statement of financial position, total assets exactly equal total equity and liabilities.

请始终记住，提现会减少资本，而利润会增加资本。在财务状况表中，总资产正好等于总权益与负债之和。

2. Income Statement Ratios | 利润表比率

These ratios measure the relationship between profit and sales, helping to assess operational efficiency and cost control.

这些比率衡量利润与销售额之间的关系，有助于评估经营效率和成本控制。

Gross Profit Margin (GPM)

GPM = (Gross Profit / Revenue) × 100%

Gross profit margin shows the percentage of revenue remaining after deducting the cost of goods sold. It indicates how efficiently a business produces or purchases its goods.

毛利率反映扣除销售成本后剩余收入所占的百分比，表明企业生产或采购商品的效率。

Profit for the Year Margin (Net Profit Margin)

Net Profit Margin = (Profit for the Year / Revenue) × 100%

Net profit margin considers all expenses, including operating costs, finance costs and tax. It reveals overall profitability after all business costs.

净利率考虑了所有费用，包括经营成本、融资成本和税费，揭示企业扣除全部成本后的整体盈利能力。

Operating Profit Margin (also known as Mark-up on cost in some contexts, but here profit from operations to revenue)

Operating Profit Margin = (Profit from Operations / Revenue) × 100%

This ratio focuses on profit generated from core trading activities before interest and tax. It helps compare performance across different periods.

该比率重点反映核心经营活动产生的、未扣除利息和税费的利润，有助于跨期比较业绩。

3. Liquidity Ratios | 流动性比率

Liquidity ratios assess a business’s ability to meet its short-term obligations as they fall due.

流动性比率评估企业偿还到期短期债务的能力。

Current Ratio (Working Capital Ratio)

Current Ratio = Current Assets / Current Liabilities

A ratio above 1 indicates that current assets exceed current liabilities. A healthy current ratio is often considered to be between 1.5 and 2, but this varies by industry.

比率大于1表明流动资产超过流动负债。一般认为健康的流动比率在1.5至2之间，但会因行业而异。

Quick Ratio (Acid Test Ratio)

Quick Ratio = (Current Assets – Inventories) / Current Liabilities

The quick ratio excludes inventories because they are not as easily convertible to cash. A quick ratio of 1 or above is usually regarded as sound liquidity.

速动比率剔除了存货，因为存货不易立即变现。速动比率达到1或以上通常被视为流动性良好。

4. Efficiency Ratios | 营运效率比率

Efficiency ratios evaluate how well a business manages its assets and liabilities to generate sales.

营运效率比率评估企业利用其资产和负债创造销售的能力。

Inventory Turnover (Times)

Inventory Turnover = Cost of Sales / Average Inventory

This tells us how many times inventory is sold and replaced during a period. A higher turnover often suggests efficient inventory management.

该比率说明存货在一个期间内被销售和补货的次数。较高的周转率通常意味着存货管理高效。

Trade Receivables Collection Period (Days)

Receivables Days = (Trade Receivables / Credit Sales) × 365

This measures the average number of days it takes to collect cash from credit customers. A shorter period is preferred to aid cash flow.

它衡量向赊销客户收回现金的平均天数。较短的回款期有利于现金流。

Trade Payables Payment Period (Days)

Payables Days = (Trade Payables / Credit Purchases) × 365

This shows how long, on average, the business takes to pay its suppliers. While a longer period helps cash flow, it may damage supplier relationships.

它表明企业平均用多长时间向供应商付款。较长的付款期有助于现金流，但可能损害供应商关系。

5. Profitability & Return Ratios | 获利能力与回报比率

These ratios measure the returns generated from the resources employed in the business.

这些比率衡量企业投入资源所产生的回报。

Return on Capital Employed (ROCE)

ROCE = (Profit from Operations / Capital Employed) × 100%

Capital employed is usually total equity plus non-current liabilities (or total assets less current liabilities). ROCE shows the percentage return on the long-term funds invested in the business.

已用资本通常指总权益加非流动负债（或总资产减流动负债）。ROCE表明投入企业的长期资金所获得的回报百分比。

Return on Equity (ROE)

ROE = (Profit for the Year / Total Equity) × 100%

ROE measures the return earned for ordinary shareholders. It is particularly important for investors assessing their dividend and growth potential.

ROE衡量普通股股东获得的回报，对投资者评估股息和增长潜力尤为重要。

Asset Turnover

Asset Turnover = Revenue / Capital Employed (or Total Assets)

This efficiency ratio shows how much revenue is generated for every ￡1 of capital employed. Higher asset turnover means the business is using its assets more productively.

该效率比率显示每1英镑已用资本能产生多少收入。较高的资产周转率意味着企业资产使用效率更高。

6. Gearing & Investor Ratios | 杠杆与投资者比率

Gearing measures the proportion of a business’s capital that comes from debt, while investor ratios are important for shareholders.

杠杆比率衡量企业资本中债务资金的比例，投资者比率则对股东很重要。

Gearing Ratio

Gearing = (Total Debt / Total Equity + Total Debt) × 100%

Gearing reflects financial risk. A highly geared business has a large proportion of debt, which means higher interest obligations. The formula may also use non-current liabilities as total debt.

杠杆比率反映财务风险。高杠杆企业负债占比大，意味着更高的利息负担。该公式也可能用非流动负债作为总债务。

Interest Cover

Interest Cover = Profit from Operations / Finance Costs

This shows how easily the business can pay its interest charges from operating profits. A ratio below 1.5 is often considered risky.

该比率表明企业用经营利润支付利息的轻松程度。低于1.5的比率通常被认为有风险。

Earnings per Share (EPS)

EPS = Profit for the Year (after preference dividends) / Number of Ordinary Shares

EPS is widely used to assess a company’s profitability from an ordinary shareholder’s perspective.

每股收益广泛用于从普通股股东角度评估公司盈利能力。

Price/Earnings Ratio (P/E)

P/E = Market Price per Share / Earnings per Share

A high P/E ratio suggests that investors expect higher future growth. It reflects market confidence in the business.

较高的市盈率表明投资者预期未来增长更高，反映市场对该企业的信心。

7. Depreciation Methods | 折旧计算方法

Depreciation allocates the cost of a non-current asset over its useful life. Two common methods are examined in CAIE Accounting.

折旧将非流动资产的成本在其使用寿命内进行分摊。CAIE会计考试通常涉及两种常见方法。

Straight-Line Method

Annual Depreciation = (Cost – Residual Value) / Useful Life (years)

This method charges an equal amount of depreciation each year. It is simple and suitable for assets that provide even benefits over time, such as buildings.

该方法每年计提等额折旧。它简单易用，适用于长期提供均匀收益的资产，如建筑物。

Reducing Balance Method

Annual Depreciation = Net Book Value × Depreciation Rate (%)

The reducing balance method applies a fixed percentage to the asset’s carrying amount each year, resulting in higher charges in earlier years. It suits assets like vehicles that lose value quickly at first.

余额递减法每年对资产的账面价值应用固定百分比，导致前期折旧费用更高。它适用于初期价值快速下降的资产，如车辆。

Always ensure that the depreciation charge is recorded in the income statement and that accumulated depreciation reduces the asset’s net book value in the statement of financial position.

始终确保折旧费用计入利润表，且累计折旧在财务状况表中扣减资产的账面净值。

8. Cost-Volume-Profit (CVP) Analysis | 本量利分析

CVP analysis examines the relationship between costs, volume and profit. It is vital for planning and decision-making.

本量利分析考察成本、销量和利润之间的关系，对规划与决策至关重要。

Contribution per Unit

Contribution per Unit = Selling Price per Unit – Variable Cost per Unit

Contribution is the amount each unit sold contributes towards covering fixed costs and then generating profit.

单位边际贡献是每售出一个单位对覆盖固定成本和创造利润的贡献额。

Total Contribution

Total Contribution = (Sales Volume × Contribution per Unit) or (Total Sales Revenue – Total Variable Costs)

Break-Even Point (Units)

Break-Even Point (units) = Total Fixed Costs / Contribution per Unit

At break-even, total revenue equals total costs, so profit is zero. This is a critical target for new businesses.

在盈亏平衡点，总收入等于总成本，利润为零。这是新企业的关键目标。

Break-Even Point (Revenue)

Break-Even Revenue = Break-Even Units × Selling Price or = Total Fixed Costs / C/S Ratio

The C/S ratio (contribution to sales ratio) is calculated as: Contribution per Unit / Selling Price per Unit, or Total Contribution / Total Revenue.

边际贡献率（C/S比率）计算为：单位边际贡献 / 单位售价，或总边际贡献 / 总收入。

Margin of Safety

Margin of Safety (units) = Actual Sales Units – Break-Even Units

Margin of safety shows how much sales can fall before the business reaches break-even. A higher margin means lower risk.

安全边际表明在达到盈亏平衡点之前销售量可以下降多少。安全边际越高，风险越低。

9. Inventory Valuation Rules | 存货计价原则

Inventory must be valued at the lower of cost and net realisable value (NRV) according to IAS 2. Cost flow assumptions like FIFO and AVCO are common.

根据IAS 2，存货必须按成本与可变现净值孰低计价。成本流动假设如先进先出法（FIFO）和平均成本法（AVCO）很常见。

FIFO (First In, First Out) assumes that the oldest inventory items are sold first. During rising prices, FIFO results in a lower cost of sales and higher closing inventory value, boosting reported profit.

先进先出法假设最早购入的存货最先售出。在物价上涨期间，FIFO导致较低的销售成本和较高的期末存货价值，从而提高报告利润。

AVCO (Weighted Average Cost)

AVCO = Total Cost of Inventory / Total Units

After each purchase, a new weighted average cost is computed. This method smooths out price fluctuations and is useful when inventory units are mixed together and cannot be identified individually.

每次采购后都会计算新的加权平均成本。该方法能平滑价格波动，适用于存货混在一起无法个别辨认的情况。

Net Realisable Value (NRV) is the estimated selling price less any costs to complete and sell. If cost is higher than NRV, inventory must be written down to NRV, recognising a loss.

可变现净值（NRV）是估计售价减去完工和销售所需成本后的金额。若成本高于NRV，必须将存货减记至NRV并确认损失。

10. Budgeting & Variance Analysis | 预算与差异分析

Budgets are financial plans. Variance analysis compares actual results with budgeted figures to identify differences (variances).

预算是财务计划。差异分析将实际结果与预算数字进行比较，找出差异。

Sales Volume Variance

Sales Volume Variance (profit effect) = (Actual Units Sold – Budgeted Units Sold) × Standard Profit per Unit

This variance isolates the effect of selling a different quantity than planned, holding the standard profit per unit constant.

该差异在保持单位标准利润不变的情况下，衡量销售数量与计划不同所带来的影响。

Sales Price Variance

Sales Price Variance = (Actual Selling Price – Standard Selling Price) × Actual Quantity Sold

A favourable variance occurs when the actual price exceeds the standard.

当实际售价超过标准价格时，产生有利差异。

Material Price Variance

Material Price Variance = (Standard Price – Actual Price) × Actual Quantity Purchased

Material Usage Variance

Material Usage Variance = (Standard Quantity for Actual Output – Actual Quantity Used) × Standard Price

Labour rate and labour efficiency variances follow a similar pattern: rate variance compares actual and standard hourly rates, while efficiency variance compares actual hours with standard hours allowed for actual output.

人工工资率及人工效率差异遵循类似模式：工资率差异比较实际小时工资率与标准工资率，效率差异则将实际工时与按实际产量应耗标准工时进行比较。

Favourable (F) means more profit or lower cost than budget; Adverse (A) means the opposite. Always state F or A when reporting variances.

有利差异（F）意味着利润高于预算或成本低于预算；不利差异（A）则相反。报告差异时须注明F或A。

11. Cash Flow Statement Constructs | 现金流量表构建原理

While not a single formula, the cash flow statement is built around key relationships between balance sheet changes and cash movements.

现金流量表虽非简单公式构建，但其编制基于资产负债表变动与现金流动之间的关键关系。

Cash from Operating Activities using the indirect method starts with profit before tax and adjusts for non-cash items (depreciation, profit/loss on disposal) and changes in working capital.

间接法下的经营活动现金流量从税前利润出发，针对非现金项目（折旧、处置利得/损失）及营运资本变动进行调整。

Cash generated from operations = Profit before tax + Depreciation – Profit on disposal + Increase in trade payables – Increase in inventory – Increase in trade receivables (simplified illustration)

This is then adjusted for tax paid, interest paid and dividends paid to arrive at net cash from operating activities.

然后针对已付税款、已付利息和已付股息进行调整，得出经营活动现金净额。

Cash from Investing Activities includes cash outflows to purchase non-current assets and inflows from their sale. The movement in non-current assets (at carrying amount) plus depreciation and disposal adjustments explains the cash effect.

投资活动现金流量包括购置非流动资产的现金流出和出售资产的现金流入。非流动资产（按账面价值）的变动加上折旧与处置调整，可解释现金影响。

A useful analytical check: Cash and cash equivalents at end – Cash at beginning = Net increase / decrease in cash, which must agree with the net of all three activities (operating, investing, financing).

一个有用的分析检查点：期末现金及现金等价物 – 期初现金 = 现金净增加/减少额，这必须与三类活动（经营、投资、筹资）的净额合计相符。

12. Key Theorems & Concepts Summary | 关键定理与概念汇总

Beyond formulae, certain accounting theorems and concepts are fundamental to correct treatment of transactions.

除公式外，某些会计定理和概念对正确处理交易至关重要。

Duality Concept: Every transaction has two equal and opposite effects. 复式概念：每笔交易都有两个相等且相反的影响。
Accruals (Matching) Concept: Revenue and expenses are recognised when they are earned or incurred, not when cash is received or paid. 应计（配比）概念：收入和费用应在赚得或发生时确认，而非在收到或支付现金时。
Consistency Concept: Once an accounting method is chosen, it should be applied consistently from period to period to enable comparability. 一致性概念：一旦选定某种会计方法，应在各期间一贯应用，以保证可比性。
Prudence Concept: Assets and profits should not be overstated; liabilities and losses should be recognised as soon as probable. 谨慎性概念：不应高估资产和利润；一旦负债和损失很可能发生就应立即确认。
Going Concern: Financial statements are prepared assuming the business will continue operating for the foreseeable future. 持续经营：编制财务报表时假定企业在可预见的未来将继续运营。
Business Entity Concept: The business is treated as separate and distinct from its owners. 企业实体概念：企业被视为与其所有者分离且不同的实体。

Internal controls and the purpose of maintaining ledger accounts are also essential: the trial balance checks the arithmetic accuracy of double entries, but a balanced trial balance does not guarantee that there are no errors (e.g., omission, commission, principle).

内部控制与维护分类账的目的同样关键：试算平衡表检查复式记录的算术准确性，但试算平衡并不保证没有错误（如遗漏、入账错误、原则性错误）。

This handbook covers the core numerical relationships tested in CAIE A-Level Accounting. Practise applying these formulas to a wide range of scenario-based questions to build speed and accuracy.

本手册涵盖了CAIE A-Level会计考试中考查的核心数量关系。请通过大量情景题练习这些公式的应用，以提高解题速度和准确性。

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A-Level CAIE Accounting: Quick Reference Formula & Theorem Handbook | A-Level CAIE 会计：公式定理速查手册