A to Z Costing Knowledge Glossary — Letter C
Investopedia-style costing concepts explained with formulas, practical examples, comparisons, and exam-focused teaching tips.
1 Capital Budgeting
| Category | Investment Decision / Long-term Planning |
|---|---|
| Best Used In | Evaluating long-term investment projects |
| Key Formula | NPV, IRR, Payback Period, PI |
| Exam Importance | High |
Capital Budgeting is the process of evaluating and selecting long-term investment projects that involve large capital outlays and generate returns over multiple years.
It is the planning process used to determine whether an organization’s long-term investments such as new machinery, replacement of machinery, new plants, new products, and research development projects are worth pursuing.
- Evaluating new plant or machinery purchase
- Expansion or diversification decisions
- Replace vs. buy decisions
- Long-term strategic planning
A company considers buying a new machine costing ₹50 lakh. It estimates future cash flows, applies NPV and IRR, and decides whether the investment meets its required rate of return.
Project cost ₹10,00,000. Expected cash inflows: Year 1 ₹2,00,000, Year 2 ₹3,00,000, Year 3 ₹4,00,000, Year 4 ₹5,00,000. Required rate 10%. NPV = sum of discounted inflows minus initial investment. If NPV positive, accept.
Payback Period
Payback = Years before full recovery + (Unrecovered cost at start of year / Cash flow during year)
- Estimate initial investment and future cash flows.
- Choose an appropriate discount rate (cost of capital).
- Calculate NPV (or IRR, payback, etc.).
- Compare NPV with zero; accept if positive.
- Rank projects if capital is rationed.
| Capital Budgeting vs. Revenue Expenditure | Capital budgeting deals with long-term fixed asset investment; revenue expenditure is short-term operating expense. |
|---|---|
| NPV vs. IRR | NPV gives absolute value; IRR gives percentage return. NPV is generally preferred for ranking. |
2 Capital Employed
| Category | Performance Measurement |
|---|---|
| Best Used In | ROCE, ROI calculations |
| Key Formula | Total Assets − Current Liabilities |
| Exam Importance | Medium |
Capital Employed refers to the total amount of capital invested in a business to generate profits, representing the long-term funds employed.
It is the sum of shareholders’ equity and long-term liabilities, or equivalently, total assets minus current liabilities.
- Return on Capital Employed (ROCE) calculation
- Measuring efficiency of capital utilization
- Inter-firm comparison
An investor calculates ROCE by dividing operating profit by capital employed. A higher ROCE indicates better use of long-term funds.
Total assets ₹20,00,000, current liabilities ₹5,00,000. Capital employed = 20,00,000 − 5,00,000 = ₹15,00,000. If operating profit ₹3,00,000, ROCE = 3,00,000 / 15,00,000 = 20%.
Alternatively: Equity + Non-Current Liabilities
- Determine total assets from balance sheet.
- Identify current liabilities.
- Subtract current liabilities from total assets.
- The result is capital employed.
- Use as denominator for profitability ratios.
| Capital Employed vs. Capital Invested | Capital employed refers to long-term funds used in operations; capital invested may include all funds including current liabilities. |
|---|---|
| Capital Employed vs. Net Worth | Net worth is equity only; capital employed includes long-term debt as well. |
3 Capital Expenditure
| Category | Expenditure Classification |
|---|---|
| Best Used In | Fixed asset acquisition, improvement decisions |
| Key Formula | No formula — classification-based |
| Exam Importance | Medium |
Capital Expenditure is money spent on acquiring, upgrading, or extending long-term assets that will provide benefits for more than one accounting period.
It is an expenditure incurred to acquire or improve fixed assets, not charged entirely to current period’s income but capitalized.
- Purchase of machinery, building, vehicles
- Major repairs extending asset life
- Installation and commissioning costs
A company buys a delivery van for ₹6,00,000. It is recorded as a fixed asset and depreciated over its useful life, not expensed fully in the year of purchase.
Purchase cost ₹5,00,000, installation ₹50,000, freight ₹20,000. Total capital expenditure = ₹5,70,000. This is capitalized and depreciated.
- Identify expenditure as capital or revenue.
- If capital, add all related costs (purchase, installation, freight, taxes).
- Record as fixed asset.
- Depreciate over useful life.
- Include depreciation in product cost via overheads.
| Capital Expenditure vs. Revenue Expenditure | Capital expenditure benefits multiple periods; revenue expenditure benefits only current period and is expensed. |
|---|---|
| Capital Expenditure vs. Deferred Revenue Expenditure | Deferred revenue expenditure is revenue in nature but spread over a few years (e.g., heavy advertising). |
4 Cash Budget
| Category | Budgeting / Cash Management |
|---|---|
| Best Used In | Liquidity planning, cash flow forecasting |
| Key Formula | Opening Cash + Cash Receipts − Cash Payments = Closing Cash |
| Exam Importance | High |
A Cash Budget is a detailed plan of expected cash inflows and outflows over a future period, ensuring sufficient liquidity.
It is a financial plan that estimates cash receipts and payments, enabling management to anticipate shortages or surpluses and arrange financing or investment accordingly.
- Managing working capital
- Planning short-term borrowing or investment
- Avoiding liquidity crises
A company prepares monthly cash budget. It expects ₹5,00,000 cash sales, ₹3,00,000 from debtors, and payments for materials ₹4,00,000, wages ₹1,50,000. If opening cash ₹1,00,000, closing cash = 1,00,000 + 8,00,000 − 5,50,000 = ₹3,50,000.
Opening cash ₹50,000; cash receipts ₹2,00,000; cash payments ₹1,80,000. Closing cash = 50,000 + 2,00,000 − 1,80,000 = ₹70,000.
- Determine opening cash balance.
- Estimate all cash inflows (cash sales, debtors, loans, etc.).
- Estimate all cash outflows (payments to suppliers, wages, expenses).
- Compute net cash flow = receipts − payments.
- Add to opening balance to get closing cash. If negative, arrange finance.
| Cash Budget vs. Cash Flow Statement | Cash budget is a forward-looking plan; cash flow statement is historical record of actual cash movements. |
|---|---|
| Cash Budget vs. Master Budget | Cash budget is one component of the master budget. |
5 Cash Flow Statement
| Category | Financial Statement |
|---|---|
| Best Used In | Assessing liquidity, solvency, cash generation |
| Key Formula | Operating + Investing + Financing Cash Flows = Net Change in Cash |
| Exam Importance | High |
A Cash Flow Statement is a financial statement that shows how changes in balance sheet accounts and income affect cash and cash equivalents, summarizing operating, investing, and financing activities.
It reports actual cash inflows and outflows during a period, classified into operating, investing, and financing activities.
- Evaluating liquidity and solvency
- Assessing quality of earnings
- Planning and forecasting cash flows
Investors analyze cash flow statement to see if a company generates enough operating cash to fund its investments and dividends.
Operating cash inflow ₹10,00,000, investing cash outflow ₹4,00,000, financing cash inflow ₹2,00,000. Net increase in cash = 10,00,000 − 4,00,000 + 2,00,000 = ₹8,00,000.
- Determine operating cash flows (from net profit adjusted for non-cash items and working capital changes).
- Determine investing cash flows (purchase/sale of fixed assets).
- Determine financing cash flows (issue of shares, borrowings, dividends).
- Add the three components.
- Reconcile with opening and closing cash balances.
| Cash Flow Statement vs. Income Statement | Income statement is accrual-based; cash flow statement records actual cash movements. |
|---|---|
| Cash Flow Statement vs. Funds Flow Statement | Funds flow statement shows changes in working capital; cash flow statement focuses only on cash. |
6 Classification of Costs
| Category | Cost Concepts |
|---|---|
| Best Used In | Cost analysis, decision making, control |
| Key Formula | Varies by classification |
| Exam Importance | High |
Classification of Costs is the systematic grouping of costs according to their common characteristics, such as nature, function, behaviour, controllability, etc.
Cost classification is the process of arranging costs into categories to facilitate analysis, control, and decision-making.
- Cost sheet preparation
- Budgeting and variance analysis
- Decision making (relevant vs irrelevant costs)
Management classifies costs into fixed, variable, and semi-variable to predict total cost at different activity levels and compute break-even points.
Raw material cost is classified as direct material, variable cost; factory rent is classified as indirect overhead, fixed cost.
- Identify the purpose of classification.
- Choose appropriate bases: element (material, labour, overhead), function (production, admin, selling), behaviour (fixed, variable), etc.
- Group costs accordingly.
- Use classified data for analysis (e.g., break-even, cost sheet).
- Review classification periodically for relevance.
| Classification vs. Cost Allocation | Allocation is assigning a cost to a cost centre; classification is grouping costs by nature or behaviour. |
|---|---|
| Direct vs. Indirect Cost | Direct costs can be traced; indirect costs need allocation/apportionment. |
7 Clock Card
| Category | Labour Cost Record |
|---|---|
| Best Used In | Timekeeping, attendance recording |
| Key Formula | No formula — record of in/out times |
| Exam Importance | Low |
A Clock Card is a document used to record the time spent by a worker on a job, including starting and finishing times, for calculating wages.
It is a timekeeping record, often punched in and out via time clock, used to compute hours worked and labour cost.
- Recording attendance time
- Calculating wages and labour cost
- Monitoring absenteeism and punctuality
A factory worker punches in at 9:00 AM and punches out at 5:30 PM. The clock card shows total hours worked; payroll uses it to calculate daily wages.
A worker’s clock card shows: In 9:00 AM, Out 1:00 PM, In 2:00 PM, Out 5:00 PM. Total hours = 4 + 3 = 7 hours.
- Record in and out times for each worker.
- Compute hours for each segment.
- Sum hours to get total work hours.
- Multiply by wage rate to get labour cost.
- Use for payroll and job costing.
| Clock Card vs. Job Card | Clock card records total attendance time; job card records time spent on each specific job. |
|---|---|
| Clock Card vs. Time Sheet | Time sheet may combine attendance and job time; clock card is purely attendance. |
8 Committed Cost
| Category | Cost Behaviour / Decision Making |
|---|---|
| Best Used In | Shut-down decisions, long-term planning |
| Key Formula | No formula — classification |
| Exam Importance | Medium |
A Committed Cost is a fixed cost that cannot be reduced or avoided in the short term because of prior commitments, such as long-term contracts or legal obligations.
These costs are incurred as a result of irreversible decisions and remain unchanged regardless of the level of activity within a relevant range.
- Shut-down vs continue decisions
- Capacity planning
- Identifying unavoidable costs
Factory rent under a 5-year lease is a committed cost. Even if production stops temporarily, the rent must be paid, making it unavoidable in the short run.
A company has signed a 3-year lease for office space at ₹50,000/month. This ₹50,000 is a committed fixed cost; it cannot be avoided during the lease term.
- Identify fixed costs with long-term commitments.
- Classify them as committed or discretionary.
- For shut-down decisions, treat committed costs as unavoidable.
- Only avoidable costs are relevant.
- Use for decision analysis.
| Committed Cost vs. Discretionary Cost | Committed cost cannot be changed in short term; discretionary cost can be adjusted by management (e.g., advertising). |
|---|---|
| Committed Cost vs. Sunk Cost | Both are unavoidable, but sunk cost is already incurred; committed cost is a future obligation. |
9 Common Costs
| Category | Cost Classification |
|---|---|
| Best Used In | Allocation to multiple cost objects |
| Key Formula | No formula — requires apportionment basis |
| Exam Importance | Medium |
Common Costs are costs that benefit multiple cost objects (products, departments) and cannot be directly traced to any single object; they require allocation or apportionment.
Common costs are shared costs that are not specifically attributable to one cost centre or product; they must be divided using an equitable basis.
- Allocating shared factory overheads to products
- Distributing administrative expenses across departments
- Joint cost allocation (up to split-off point)
Factory lighting cost benefits all departments. It is a common cost apportioned to departments based on floor area or number of light points.
Factory lighting ₹50,000. Two departments: A uses 60% floor area, B uses 40%. Common cost allocated: A ₹30,000, B ₹20,000.
- Identify the common cost and the cost objects.
- Choose an appropriate allocation base (floor area, headcount, etc.).
- Compute each object’s share of the base.
- Allocate common cost proportionately.
- Use allocated costs for product costing or departmental reports.
| Common Cost vs. Joint Cost | Joint cost is incurred for multiple products from a single process; common cost is more general, benefiting multiple objects without a joint production process. |
|---|---|
| Common Cost vs. Traceable Cost | Traceable cost can be directly assigned; common cost cannot. |
10 Composite Cost
| Category | Costing Method |
|---|---|
| Best Used In | Industries producing multiple products with common inputs |
| Key Formula | Average unit cost = Total joint cost / Total equivalent units |
| Exam Importance | Low |
Composite Cost is the average cost per unit of a product when multiple grades or varieties are produced together, often used in industries like textiles, chemicals, or steel where output is measured in common units.
It is a method of costing applied when a single process yields different grades or types of products, and total costs are averaged over total output expressed in equivalent units.
- Textile mills producing different counts of yarn
- Steel plants producing different grades
- Chemical plants with multiple outputs
A textile mill produces yarn of different counts. Total cost is divided by total equivalent units (standardized to a base count) to get composite cost per unit.
Total joint cost ₹1,00,000. Output: 5,000 units of grade A (equivalent factor 1.0), 3,000 units of grade B (factor 0.8). Equivalent units = 5,000 + (3,000 × 0.8) = 7,400. Composite cost per equivalent unit = 1,00,000 / 7,400 ≈ ₹13.51.
- Identify total joint cost of the process.
- Determine output quantities of each grade.
- Assign equivalent factors to each grade (based on value or weight).
- Compute total equivalent units.
- Divide total cost by equivalent units to get composite cost; allocate to grades.
| Composite Cost vs. Joint Cost | Joint cost is the cost before split-off; composite cost is the average cost per equivalent unit used to allocate joint cost. |
|---|---|
| Composite Cost vs. Process Costing | Process costing often uses composite cost when outputs are non-homogeneous but measurable in equivalent units. |
11 Continuous Operation Costing
| Category | Costing Method |
|---|---|
| Best Used In | Continuous production processes |
| Key Formula | Cost per unit = Total cost / Total units produced |
| Exam Importance | Medium |
Continuous Operation Costing is a costing method used in industries where production is continuous and units are homogeneous, such as power, chemicals, and oil refining.
Also known as process costing in some contexts, this method accumulates costs for a period and divides by total units produced to arrive at unit cost.
- Electricity generation
- Chemical manufacturing
- Oil refining
- Food processing
A cement plant produces continuously. Total production cost for a month is ₹50,00,000; output is 1,00,000 bags. Cost per bag = ₹50.
Total process cost ₹8,00,000 for a month. Units produced 40,000 kg. Cost per kg = 8,00,000 / 40,000 = ₹20.
- Identify the process and period.
- Accumulate all costs (materials, labour, overhead) for the process.
- Determine total units produced.
- Divide total cost by units to get unit cost.
- Apply unit cost to completed units and ending WIP (using equivalent units if necessary).
| Continuous Operation Costing vs. Job Costing | Job costing is for unique orders; continuous costing is for mass production of homogeneous units. |
|---|---|
| Continuous Operation Costing vs. Process Costing | Essentially the same; continuous operation costing emphasizes the uninterrupted nature of production. |
12 Contribution
| Category | Marginal Costing / CVP |
|---|---|
| Best Used In | Break-even, pricing, product mix decisions |
| Key Formula | Contribution = Sales − Variable Cost |
| Exam Importance | Very High |
Contribution is the amount remaining from sales revenue after deducting all variable costs, which contributes towards covering fixed costs and then generating profit.
Contribution = Selling price per unit − Variable cost per unit. It is the fundamental concept in marginal costing and break-even analysis.
- Break-even and target profit analysis
- Product profitability and mix decisions
- Make-or-buy and special order decisions
A company sells a product for ₹100; variable cost per unit ₹60. Contribution per unit = ₹40. Fixed costs ₹2,00,000. BEP = 2,00,000 / 40 = 5,000 units.
Selling price ₹500, variable cost ₹350. Contribution per unit = ₹150. If fixed costs ₹1,50,000, break-even = 1,50,000 / 150 = 1,000 units.
Contribution per Unit = Selling Price per Unit − Variable Cost per Unit
- Determine selling price and variable cost per unit.
- Compute contribution per unit.
- Compute total contribution = contribution per unit × units sold.
- Subtract fixed costs from total contribution to get profit.
- Use contribution for break-even, margin of safety, etc.
| Contribution vs. Profit | Contribution is before fixed costs; profit is after fixed costs. |
|---|---|
| Contribution vs. Gross Margin | Gross margin = sales − cost of goods sold (includes fixed production overhead); contribution excludes only variable costs. |
13 Contribution Margin Ratio
| Category | Marginal Costing / CVP |
|---|---|
| Best Used In | Break-even sales value, sensitivity analysis |
| Key Formula | P/V Ratio = Contribution / Sales × 100 |
| Exam Importance | High |
Contribution Margin Ratio (also called P/V Ratio) expresses contribution as a percentage of sales, indicating the proportion of each sales rupee that contributes to fixed costs and profit.
It measures profitability of sales and is used to compute break-even sales value and required sales for target profit.
- Break-even analysis in value terms
- Comparing profitability of different products
- Sensitivity analysis for price changes
A product sells for ₹200, variable cost ₹120. Contribution = ₹80. P/V ratio = 80/200 = 40%. If fixed costs ₹40,000, break-even sales value = 40,000 / 0.40 = ₹1,00,000.
Selling price ₹500, variable cost ₹350. Contribution ₹150. P/V Ratio = 150/500 = 30%. Fixed costs ₹90,000 → BEP sales = 90,000 / 0.30 = ₹3,00,000.
Break-Even Sales (₹) = Fixed CostsP/V Ratio
- Compute contribution per unit or total contribution.
- Divide contribution by sales to get P/V ratio.
- Use P/V ratio to calculate break-even sales value.
- Use P/V ratio to determine required sales for desired profit.
- Analyze impact of changes in variable cost or selling price on P/V ratio.
| P/V Ratio vs. Contribution per Unit | P/V ratio is percentage; contribution per unit is absolute amount. |
|---|---|
| P/V Ratio vs. Margin of Safety | P/V ratio indicates profitability; margin of safety indicates risk cushion. |
14 Controllable Cost
| Category | Responsibility Accounting |
|---|---|
| Best Used In | Performance evaluation, cost control |
| Key Formula | No formula — classification based on manager’s authority |
| Exam Importance | Medium |
A Controllable Cost is a cost that can be influenced or changed by a specific manager within a given time period.
Controllable costs are those that a responsibility centre manager can directly control through decisions, such as material usage, labour efficiency, and certain overheads.
- Responsibility accounting and performance reports
- Management by exception
- Motivating managers to control costs
A production manager can control direct material usage and overtime, but cannot control factory rent allocated to the department. Only controllable costs are included in the manager’s performance report.
Direct material cost for a production supervisor is controllable; depreciation on plant equipment is not controllable by that supervisor.
- Identify the responsibility centre and its manager.
- List costs incurred in that centre.
- Determine which costs the manager can influence.
- Classify as controllable vs non-controllable.
- Prepare performance report including only controllable costs.
| Controllable vs. Non-Controllable Cost | Non-controllable costs cannot be influenced by the manager, such as allocated head-office expenses. |
|---|---|
| Controllable vs. Direct Cost | Direct costs are often controllable, but not all direct costs are controllable (e.g., a supervisor may not control the price of materials). |
15 Conversion Cost
| Category | Cost Element |
|---|---|
| Best Used In | Process costing, equivalent units calculation |
| Key Formula | Conversion Cost = Direct Labour + Manufacturing Overhead |
| Exam Importance | High |
Conversion Cost is the cost incurred to convert raw materials into finished goods, comprising direct labour and factory overheads.
It represents the total cost of processing materials, excluding the cost of raw materials themselves.
- Process costing and equivalent units
- Valuation of work-in-process
- Cost control in manufacturing
In a manufacturing process, raw material cost is added at the start, while labour and overheads are incurred throughout. Conversion cost per equivalent unit is used to value partially completed units.
Direct labour ₹1,50,000, manufacturing overhead ₹2,50,000. Conversion cost = ₹4,00,000. If 20,000 equivalent units are produced, conversion cost per unit = ₹20.
- Collect direct labour cost for the period.
- Collect manufacturing overheads (factory overheads).
- Sum to get total conversion cost.
- For process costing, compute conversion cost per equivalent unit.
- Use to value ending WIP and completed units.
| Conversion Cost vs. Prime Cost | Prime cost = direct material + direct labour; conversion cost = direct labour + overhead. Together they make total manufacturing cost. |
|---|---|
| Conversion Cost vs. Total Cost | Total cost includes raw material cost; conversion cost excludes it. |
16 Cost
| Category | Fundamental Concept |
|---|---|
| Best Used In | All costing applications |
| Key Formula | Cost = Resources sacrificed for a purpose |
| Exam Importance | Very High |
Cost is the monetary value of resources sacrificed to achieve a specific objective, such as producing goods or providing services.
Cost is the amount of expenditure (actual or notional) incurred on, or attributable to, a given thing.
- Pricing decisions
- Cost control and reduction
- Profitability analysis
A manufacturer calculates the cost of producing a chair by summing material, labour, and overheads to set a profitable selling price.
Cost of a product = direct material ₹100 + direct labour ₹50 + overhead ₹30 = ₹180.
- Identify the cost object (product, service, department).
- Collect direct costs traceable to the object.
- Allocate or apportion indirect costs (overheads).
- Sum all costs to get total cost.
- Use total cost for decision making.
| Cost vs. Expense | Cost is incurred to create an asset; expense is a cost that has expired or been matched with revenue. |
|---|---|
| Cost vs. Price | Cost is what producer spends; price is what customer pays. |
17 Cost Accounting
| Category | Accounting Discipline |
|---|---|
| Best Used In | Internal cost control, product costing, decision making |
| Key Formula | No single formula; framework |
| Exam Importance | High |
Cost Accounting is the process of recording, classifying, analyzing, and summarizing costs for the purpose of cost ascertainment, control, and decision making.
It is a specialized branch of accounting that deals with the collection and analysis of costs, helping management to control operations and plan for the future.
- Product cost determination
- Cost control and reduction
- Budgeting and variance analysis
A cost accountant prepares cost sheets, analyzes variances, and provides reports to management for pricing and cost control.
Cost accounting system collects material issue slips, labour time cards, and overhead allocation to produce a cost sheet showing total and unit cost.
- Record all costs using vouchers and documents.
- Classify costs by nature and behaviour.
- Allocate and apportion overheads to cost centres.
- Absorb overheads into products.
- Prepare cost statements and reports for management.
| Cost Accounting vs. Financial Accounting | Cost accounting is internal and detailed; financial accounting is external and follows GAAP. |
|---|---|
| Cost Accounting vs. Management Accounting | Cost accounting is a subset; management accounting includes cost accounting plus other tools like budgeting, decision analysis. |
18 Cost Accountancy
| Category | Professional Practice |
|---|---|
| Best Used In | Applying cost principles in organizations |
| Key Formula | No formula |
| Exam Importance | Low |
Cost Accountancy is the application of costing and cost accounting principles, methods, and techniques to the science, art, and practice of cost control and cost ascertainment.
It is a broader term encompassing costing, cost accounting, and cost control, and includes the professional practice of cost management.
- Professional cost and management accounting practice
- Advising management on cost-related matters
- Setting up costing systems
A cost accountant applies the principles of cost accountancy to design and implement a costing system suitable for a manufacturing company.
A cost and management accountant (CMA) uses cost accountancy to prepare a budget, analyze variances, and advise on cost reduction strategies.
- Understand costing principles.
- Apply them to real business scenarios.
- Design costing systems.
- Provide cost information for decision making.
- Continuously improve cost management practices.
| Cost Accountancy vs. Cost Accounting | Cost accountancy is the application; cost accounting is the process. |
|---|---|
| Cost Accountancy vs. Cost Control | Cost accountancy includes cost control as one of its functions. |
19 Cost Behaviour
| Category | Cost Classification |
|---|---|
| Best Used In | CVP analysis, budgeting, cost estimation |
| Key Formula | Total Cost = Fixed + (Variable rate × Volume) |
| Exam Importance | High |
Cost Behaviour refers to how costs change in response to changes in activity level, such as production volume, sales, or other cost drivers.
Costs are classified as fixed, variable, or mixed based on their behaviour with activity changes.
- Predicting total costs at different activity levels
- Break-even analysis
- Budgeting and flexible budgets
A company with fixed costs ₹1,00,000 and variable cost ₹20/unit can estimate total cost for 10,000 units as 1,00,000 + (20 × 10,000) = ₹3,00,000.
Fixed cost ₹50,000, variable cost per unit ₹10. Total cost for 5,000 units = 50,000 + (10 × 5,000) = ₹1,00,000.
- Identify fixed and variable components of cost.
- Determine variable cost per unit.
- Multiply variable rate by expected activity.
- Add fixed cost to get total cost.
- Use for budgeting and CVP analysis.
| Fixed vs. Variable Cost | Fixed cost remains constant in total; variable cost changes proportionately with activity. |
|---|---|
| Mixed Cost | Has both fixed and variable components; can be split using high-low method or regression. |
20 Cost Centre
| Category | Responsibility Accounting |
|---|---|
| Best Used In | Cost accumulation, control, allocation |
| Key Formula | No formula — organizational segment |
| Exam Importance | High |
A Cost Centre is a location, person, or item of equipment for which costs are accumulated and then attributed to cost units.
It is a department or segment within an organization where costs are collected for control and allocation purposes, without responsibility for revenue or profit.
- Departmental cost accumulation
- Overhead allocation and absorption
- Cost control and responsibility accounting
A factory has cost centres like Cutting, Assembly, and Packing. Overheads are allocated to these centres and then absorbed into products based on centre-specific rates.
Cost centre “Machine Shop” accumulates costs like depreciation, supervisor salary, and power. These are then absorbed into products using machine hour rate.
- Identify organizational segments with common activities.
- Define them as cost centres.
- Accumulate all costs traceable to each centre.
- Allocate/apportion shared costs.
- Compute overhead absorption rate for each centre.
| Cost Centre vs. Profit Centre | Cost centre controls costs only; profit centre controls both revenues and costs. |
|---|---|
| Cost Centre vs. Cost Unit | Cost centre is where costs are incurred; cost unit is what costs are assigned to. |
21 Cost Control
| Category | Management Function |
|---|---|
| Best Used In | Budgetary control, standard costing, variance analysis |
| Key Formula | Variance = Standard − Actual |
| Exam Importance | High |
Cost Control is the process of monitoring and regulating expenditure to ensure that costs do not exceed predetermined standards or budgets.
It involves setting standards, comparing actual costs, analyzing variances, and taking corrective action to keep costs within acceptable limits.
- Budgetary control systems
- Standard costing and variance analysis
- Preventing inefficiencies and waste
A company sets standard material cost at ₹10/kg. Actual cost is ₹12/kg. Variance is adverse ₹2/kg; management investigates and takes corrective action (e.g., renegotiate with supplier).
Standard labour cost ₹50,000 for a job; actual ₹55,000. Variance = ₹5,000 adverse. Cost control investigates cause and corrects.
- Set standard costs for materials, labour, overheads.
- Record actual costs.
- Compare actual vs standard to compute variances.
- Analyze significant variances.
- Take corrective actions to control costs.
| Cost Control vs. Cost Reduction | Cost control aims to keep costs within standards; cost reduction aims to lower the standards themselves. |
|---|---|
| Cost Control vs. Cost Management | Cost management is broader, including planning, control, and decision making. |
22 Cost Driver
| Category | Activity-Based Costing / Overhead Allocation |
|---|---|
| Best Used In | ABC, overhead allocation, causal analysis |
| Key Formula | Cost per driver unit = Total activity cost / Total driver volume |
| Exam Importance | High |
A Cost Driver is a factor that causes or influences the incurrence of a cost, such as number of machine setups, inspection hours, or orders processed.
It is a measurable factor used to assign costs to activities and cost objects in activity-based costing.
- Activity-based costing systems
- Overhead allocation
- Identifying causes of costs for management
In ABC, machine setup cost is driven by number of setups. A product requiring 10 setups absorbs 10 times the setup cost of a product with 1 setup.
Total inspection cost ₹1,00,000; total inspections 2,000. Cost driver = number of inspections. Cost per inspection = ₹50. A product inspected 100 times absorbs ₹5,000.
- Identify activity cost pools.
- Determine appropriate cost drivers for each pool.
- Calculate total volume of each driver.
- Compute cost driver rate.
- Assign costs to products based on driver usage.
| Cost Driver vs. Cost Centre | Cost centre is where costs are collected; cost driver is the factor that causes cost. |
|---|---|
| Volume-based vs. Activity-based driver | Volume-based drivers (e.g., labour hours) spread overhead broadly; activity-based drivers are more precise. |
23 Cost Estimation
| Category | Planning / Forecasting |
|---|---|
| Best Used In | Quotations, budgeting, cost prediction |
| Key Formula | Various: High-low, regression, engineering estimates |
| Exam Importance | Medium |
Cost Estimation is the process of predicting future costs based on past data, engineering analysis, or statistical methods, before actual production or service delivery.
It involves forecasting the cost of a product, job, or activity using historical relationships or detailed engineering studies.
- Preparing quotations for customers
- Budgeting and cost planning
- Decision making (make or buy, special orders)
A company estimates the cost of a new product using past cost behaviour: fixed cost ₹50,000, variable cost ₹20/unit. For 5,000 units, estimated total cost = ₹1,50,000.
High-low method: At 10,000 units cost ₹1,50,000; at 20,000 units cost ₹2,50,000. Variable cost per unit = (2,50,000-1,50,000)/(20,000-10,000) = ₹10. Fixed cost = 1,50,000 – (10×10,000) = ₹50,000.
- Collect historical cost and activity data.
- Separate fixed and variable components using appropriate method.
- Determine estimated activity level.
- Apply cost equation to estimate total cost.
- Use estimate for pricing or budgeting.
| Cost Estimation vs. Cost Ascertainment | Estimation is forward-looking; ascertainment is backward-looking factual cost. |
|---|---|
| Cost Estimation vs. Standard Cost | Standard cost is a predetermined target; estimation is a prediction. Both may be based on similar methods. |
24 Cost of Goods Sold
| Category | Financial Statement |
|---|---|
| Best Used In | Income statement, inventory valuation |
| Key Formula | COGS = Opening Stock + Purchases + Direct Expenses − Closing Stock |
| Exam Importance | High |
Cost of Goods Sold (COGS) represents the direct costs attributable to the production of goods sold by a company, including materials, labour, and manufacturing overheads.
COGS is the cost of finished goods that were actually sold during the period, computed by adjusting for inventory changes.
- Calculating gross profit
- Inventory valuation
- Performance evaluation
A retailer’s opening stock ₹50,000, purchases ₹3,00,000, closing stock ₹60,000. COGS = 50,000 + 3,00,000 − 60,000 = ₹2,90,000.
Opening stock ₹1,00,000; purchases ₹5,00,000; direct expenses ₹20,000; closing stock ₹80,000. COGS = 1,00,000 + 5,00,000 + 20,000 − 80,000 = ₹5,40,000.
- Determine opening stock of finished goods.
- Add cost of goods manufactured or purchases during period.
- Add any direct expenses related to purchases/production.
- Subtract closing stock.
- The result is cost of goods sold, used in income statement.
| COGS vs. Cost of Production | Cost of production is the cost of goods completed; COGS is cost of goods actually sold, adjusted for finished goods inventory. |
|---|---|
| COGS vs. Operating Expenses | COGS are direct product costs; operating expenses are period costs (selling, admin). |
25 Cost of Quality
| Category | Quality Management |
|---|---|
| Best Used In | Quality improvement, cost reduction |
| Key Formula | COQ = Prevention + Appraisal + Internal Failure + External Failure |
| Exam Importance | Medium |
Cost of Quality (COQ) is the total cost incurred to prevent, detect, and correct defects, including both the cost of good quality and poor quality.
COQ encompasses four categories: prevention costs, appraisal costs, internal failure costs, and external failure costs.
- Identifying quality improvement opportunities
- Justifying investment in prevention
- Reporting to management
A company calculates its COQ and finds high external failure costs (warranty claims). It invests in prevention (training) to reduce overall COQ.
Prevention ₹50,000, appraisal ₹30,000, internal failure ₹20,000, external failure ₹1,00,000. Total COQ = ₹2,00,000.
- Collect data on each COQ category.
- Classify costs into prevention, appraisal, internal failure, external failure.
- Sum each category.
- Compute total COQ.
- Analyze to find high-cost areas and improve quality processes.
| Prevention vs. Appraisal | Prevention avoids defects; appraisal detects defects before delivery. |
|---|---|
| Internal vs. External Failure | Internal failure found before reaching customer; external failure found after customer receives product. |
26 Cost Pool
| Category | Overhead Allocation (ABC) |
|---|---|
| Best Used In | Activity-based costing, overhead grouping |
| Key Formula | Pool rate = Total pool cost / Total driver volume |
| Exam Importance | Medium |
A Cost Pool is a grouping of individual costs that are aggregated for the purpose of allocation, typically in activity-based costing.
Similar costs are pooled together and assigned to cost objects using a single cost driver rate.
- ABC system implementation
- Simplifying overhead allocation
- Improving cost accuracy
A company pools all setup-related costs (labour, supplies, machine time) into a “Setup Cost Pool” and allocates based on number of setups.
Setup cost pool total ₹80,000; total setups 200. Pool rate = ₹400 per setup. A product needing 5 setups absorbs ₹2,000.
- Identify homogeneous cost groupings.
- Aggregate costs into pools.
- Select cost driver for each pool.
- Compute pool rate.
- Allocate pool costs to cost objects based on driver usage.
| Cost Pool vs. Cost Centre | Cost centre is a location; cost pool is a grouping of similar costs, often within a cost centre. |
|---|---|
| Cost Pool vs. Cost Driver | Cost pool is the collection of costs; cost driver is the basis for allocation. |
27 Cost Reduction
| Category | Management Strategy |
|---|---|
| Best Used In | Improving efficiency, lowering standards |
| Key Formula | No formula; aimed at reducing cost per unit |
| Exam Importance | Medium |
Cost Reduction is a planned and systematic effort to reduce the per-unit cost of products or services without compromising quality or functionality.
It involves finding new ways to produce at lower cost by improving technology, processes, and resource utilization, thereby setting new lower cost standards.
- Improving production processes
- Supplier negotiation
- Product redesign for cost efficiency
A company reduces cost per unit from ₹100 to ₹90 by adopting lean manufacturing techniques, without reducing product quality.
By automating a manual process, labour cost per unit drops from ₹25 to ₹15, reducing total unit cost.
- Identify areas with high cost per unit.
- Analyze causes and improvement opportunities.
- Implement changes (technology, process redesign, waste elimination).
- Measure new cost per unit.
- Set new standards and continuously improve.
| Cost Reduction vs. Cost Control | Cost control keeps within existing standards; cost reduction lowers the standards. |
|---|---|
| Cost Reduction vs. Cost Cutting | Cost reduction is systematic and sustainable; cost cutting may be arbitrary and harm quality. |
28 Cost Sheet
| Category | Cost Statement |
|---|---|
| Best Used In | Presenting total and unit cost |
| Key Formula | Total Cost = Prime Cost + Overheads |
| Exam Importance | Very High |
A Cost Sheet is a statement that presents the various elements of cost for a product or job, showing total cost, cost per unit, and profit or loss.
It is a detailed statement prepared to ascertain cost, analyze cost components, and determine selling price.
- Product cost ascertainment
- Pricing decisions
- Cost comparison and control
A manufacturer prepares a cost sheet for a job showing prime cost, factory overhead, office overhead, total cost, and profit margin to quote a price.
Direct material ₹100, direct labour ₹50, factory overhead ₹30, office overhead ₹20. Total cost = ₹200. Selling price at 20% profit = ₹240.
Total Cost = Prime Cost + Factory Overhead + Office & Admin Overhead + Selling & Distribution Overhead
- Collect all direct costs.
- Compute prime cost.
- Add factory overhead to get works cost.
- Add office/admin overhead to get cost of production.
- Add selling/distribution overhead to get total cost; add profit to get selling price.
| Cost Sheet vs. Income Statement | Cost sheet focuses on cost components per unit/product; income statement shows period performance. |
|---|---|
| Cost Sheet vs. Production Account | Cost sheet is a statement; production account is a ledger account. Both show cost but different formats. |
29 Cost Unit
| Category | Cost Measurement |
|---|---|
| Best Used In | Cost ascertainment, comparison |
| Key Formula | No formula — unit of measurement |
| Exam Importance | High |
A Cost Unit is a unit of product, service, or time in relation to which costs are ascertained or expressed, e.g., per tonne, per hour, per patient-day.
It is the quantitative unit used to measure cost; it enables comparison and control by expressing cost in a standard unit.
- Product costing (per unit, per batch)
- Service costing (per passenger-km, per room-night)
- Cost comparison and benchmarking
A cement manufacturer uses cost per tonne as cost unit; a hospital uses cost per patient-day. This allows comparison across periods and organizations.
Total cost of production ₹10,00,000; units produced 50,000. Cost per unit = ₹20. The cost unit is “per unit”.
- Determine the nature of output.
- Define a suitable cost unit (e.g., per kg, per hour).
- Accumulate total cost for a period.
- Divide total cost by number of cost units.
- Use cost per unit for pricing and control.
| Cost Unit vs. Cost Centre | Cost unit is the output measure; cost centre is the location/activity. |
|---|---|
| Cost Unit vs. Composite Cost | Composite cost uses equivalent units to express output; cost unit is the final unit of output. |
30 Cost Variance
| Category | Standard Costing |
|---|---|
| Best Used In | Variance analysis, performance measurement |
| Key Formula | Variance = Standard Cost − Actual Cost |
| Exam Importance | Very High |
Cost Variance is the difference between the standard cost and the actual cost incurred for a specific cost element (material, labour, overhead).
It measures the deviation of actual cost from the predetermined standard, used for cost control and performance evaluation.
- Standard costing systems
- Performance reports
- Identifying inefficiencies
Standard material cost for a product ₹50; actual ₹55. Variance = ₹5 adverse. Management investigates cause (higher price or inefficient usage).
Standard labour hours 2 hrs at ₹100/hr = ₹200. Actual 2.5 hrs at ₹110/hr = ₹275. Labour cost variance = 200 – 275 = ₹75 adverse.
(Adverse if Actual > Standard; Favorable if Actual < Standard)
- Set standard cost for each element.
- Record actual cost.
- Compute difference (variance).
- Analyze variance into sub-variances (price, quantity, etc.).
- Take corrective action for significant variances.
| Cost Variance vs. Budget Variance | Budget variance is total period variance; cost variance is per element or per unit. |
|---|---|
| Material Price vs. Quantity Variance | Price variance = (SP-AP)×AQ; Quantity variance = (SQ-AQ)×SP. |
31 Cost Volume Profit Analysis
| Category | Decision Making Tool |
|---|---|
| Best Used In | Profit planning, break-even, sensitivity analysis |
| Key Formula | Profit = (Sales − Variable Cost) − Fixed Cost |
| Exam Importance | Very High |
Cost Volume Profit (CVP) Analysis is a technique that studies the relationship between costs, volume, and profit to assist in planning and decision making.
CVP analysis uses contribution margin to determine break-even point, target profit, and impact of changes in variables on profit.
- Setting sales targets
- Evaluating impact of price/cost changes
- Product mix decisions
A company uses CVP to find that reducing selling price by 10% increases volume by 20%, resulting in higher total contribution and profit.
Fixed costs ₹2,00,000, selling price ₹100, variable cost ₹60. Contribution per unit ₹40. To earn profit ₹1,00,000, required sales = (2,00,000+1,00,000)/40 = 7,500 units.
Required Sales (units) = Fixed Costs + Desired ProfitContribution per Unit
- Determine fixed costs and contribution per unit.
- Use contribution to compute break-even and target profit levels.
- Analyze impact of changes in price, cost, volume.
- Construct profit-volume or break-even charts if needed.
- Make decisions based on CVP results.
| CVP Analysis vs. Break-Even Analysis | Break-even is a subset; CVP includes target profit, sensitivity, and multi-product analysis. |
|---|---|
| CVP vs. Marginal Costing | Marginal costing provides data; CVP uses that data for analysis. |
32 Current Cost
| Category | Cost Measurement |
|---|---|
| Best Used In | Inventory valuation, pricing under inflation |
| Key Formula | Replacement cost or market value |
| Exam Importance | Low |
Current Cost is the cost that would be incurred to replace an asset or produce a product at current market prices, rather than historical cost.
It reflects the current economic value or replacement cost, used in inflation accounting and inventory valuation when prices change significantly.
- Inflation accounting
- Inventory valuation at replacement cost
- Pricing decisions during rapid price changes
A company bought raw material at ₹100/kg; current market price is ₹150/kg. Using current costing, inventory is valued at ₹150 to reflect true economic cost.
Machine purchased 5 years ago for ₹5,00,000; replacement cost today ₹8,00,000. Current cost = ₹8,00,000, used in calculating economic depreciation.
- Identify the asset or resource.
- Determine its current replacement cost or market price.
- Use this value for valuation and decision making.
- Adjust depreciation or cost of sales accordingly.
- Present current cost information in financial statements if applicable.
| Current Cost vs. Historical Cost | Historical cost is original purchase price; current cost is today’s replacement price. |
|---|---|
| Current Cost vs. Realizable Value | Realizable value is selling price; current cost is replacement cost. |
