A to Z Costing Knowledge Glossary — Letter D
Investopedia-style costing concepts explained with formulas, practical examples, comparisons, and exam-focused teaching tips.
1 Deferred Revenue Expenditure
| Category | Expenditure Classification |
|---|---|
| Best Used In | Spreading heavy expenses over multiple years |
| Key Formula | Amortized portion = Total expenditure / Number of years |
| Exam Importance | Medium |
Deferred Revenue Expenditure is a revenue expenditure of a heavy nature whose benefit extends beyond the current accounting period, so it is written off over a few years.
It is an expense that is essentially revenue in nature but is not charged fully to the current period; instead, it is amortized over the periods it benefits.
- Heavy advertising campaign for a new product launch
- Preliminary expenses (company formation)
- Research and development costs with long-term benefits
A company spends ₹10,00,000 on a massive advertising campaign expected to benefit for 5 years. It writes off ₹2,00,000 each year as expense.
Preliminary expenses ₹1,00,000, written off over 4 years. Annual write-off = ₹25,000. In year 1, ₹25,000 is charged to P&L; remaining ₹75,000 shown as deferred revenue expenditure in balance sheet.
- Identify heavy revenue expenditure with multi-period benefit.
- Determine total amount and estimated benefit period.
- Compute annual amortization amount.
- Charge annual amount to P&L each year.
- Show unamortized balance as an asset (deferred revenue expenditure) in balance sheet.
| Deferred Revenue vs. Capital Expenditure | Capital expenditure is for acquiring fixed assets; deferred revenue is for expenses whose benefit is multi-period but no asset is created. |
|---|---|
| Deferred Revenue vs. Prepaid Expense | Prepaid expense is paid in advance for a specific period (e.g., prepaid rent); deferred revenue is amortized over multiple future periods. |
2 Defective Work
| Category | Process Costing / Quality Costing |
|---|---|
| Best Used In | Accounting for rework of partially defective units |
| Key Formula | Rework cost included in cost of units if abnormal |
| Exam Importance | Low |
Defective Work refers to units that do not meet quality standards but can be reworked or rectified to bring them up to standard by incurring additional cost.
Defective units are not totally spoilt; they can be corrected. The cost of rework is treated differently based on whether the defect is normal or abnormal.
- Manufacturing processes with reworkable defects
- Cost of quality reporting
- Valuation of inventory after rectification
In a factory, 100 units are found defective. They are reworked at an additional cost of ₹20 per unit. If the defect is normal, the rework cost is added to the cost of all good units; if abnormal, it is charged to costing P&L.
500 units produced, 20 defective. Rework cost ₹500. If normal (4% expected), rework cost is absorbed into cost of good units. If abnormal, ₹500 is charged to Costing P&L separately.
- Identify defective units and rework cost.
- Determine if defect is normal (within expected tolerance) or abnormal.
- If normal, add rework cost to process cost and distribute over all good units.
- If abnormal, transfer rework cost to Costing P&L as abnormal loss.
- Value good units accordingly.
| Defective Work vs. Spoilage | Spoilage is total loss (cannot be reworked); defective work can be rectified. |
|---|---|
| Defective Work vs. Scrap | Scrap has minimal value; defective units can be reworked to full value. |
3 Departmentalization of Overheads
| Category | Overhead Distribution |
|---|---|
| Best Used In | Accurate departmental overhead rates |
| Key Formula | Departmental overhead rate = Department overhead / Department base |
| Exam Importance | High |
Departmentalization of Overheads is the process of dividing the factory into departments or cost centres and collecting overhead costs department-wise for more accurate absorption.
It involves separating overheads into production departments and service departments, then re-apportioning service department costs to production departments to compute separate overhead absorption rates.
- Multi-department factories
- Accurate product costing
- Responsibility accounting
A factory has three production departments (Cutting, Assembly, Finishing) and two service departments (Maintenance, Canteen). Overheads are first allocated/apportioned to all departments, then service department costs are re-apportioned to production departments using suitable bases.
Total overhead ₹10,00,000. Allocation: Cutting ₹3,00,000, Assembly ₹4,00,000, Finishing ₹2,00,000, Maintenance ₹80,000, Canteen ₹20,000. Maintenance cost re-apportioned to production departments based on machine hours; canteen based on number of employees.
- Identify production and service departments.
- Allocate and apportion overheads to all departments.
- Re-apportion service department costs to production departments.
- Compute overhead rate for each production department.
- Absorb overheads into products using respective departmental rates.
| Departmentalization vs. Single Plant-wide Rate | Plant-wide rate uses one blanket rate; departmentalization uses multiple rates, leading to more accurate costing. |
|---|---|
| Production vs. Service Departments | Production departments directly produce goods; service departments provide support. Service costs must be re-apportioned. |
4 Depletion
| Category | Natural Resource Costing |
|---|---|
| Best Used In | Mining, oil, timber, natural resources |
| Key Formula | Depletion per unit = (Cost − Residual) / Total estimated units |
| Exam Importance | Low |
Depletion is the systematic allocation of the cost of natural resources (like minerals, oil, timber) over the period they are extracted or consumed.
Similar to depreciation but applied to wasting assets; it reflects the exhaustion of natural resources.
- Mining companies
- Oil and gas extraction
- Timber harvesting
A mine costs ₹50,00,000 and has estimated reserves of 10,00,000 tonnes. Depletion per tonne = ₹5. If 1,00,000 tonnes are extracted in year 1, depletion expense = ₹5,00,000.
Oil well cost ₹1,00,00,000, estimated reserves 5,00,000 barrels. Depletion per barrel = ₹20. Extraction of 50,000 barrels gives depletion expense of ₹10,00,000.
Depletion Expense = Depletion per Unit × Units Extracted
- Determine total cost of the natural resource asset.
- Estimate total recoverable units (reserves).
- Compute depletion per unit.
- Multiply by units extracted during the period.
- Record as depletion expense.
| Depletion vs. Depreciation | Depreciation is for fixed assets; depletion is for natural resources/wasting assets. |
|---|---|
| Depletion vs. Amortization | Amortization is for intangible assets; depletion is for tangible natural resources. |
5 Depreciation
| Category | Fixed Asset Costing |
|---|---|
| Best Used In | Cost allocation for tangible fixed assets |
| Key Formula | Various methods (SLM, WDV, etc.) |
| Exam Importance | Very High |
Depreciation is the systematic allocation of the cost of a tangible fixed asset over its useful life, representing wear and tear, obsolescence, or passage of time.
It is a non-cash expense that reduces the book value of an asset and is included in product cost as an overhead.
- Costing products using machinery
- Financial reporting
- Tax computation
A machine costs ₹5,00,000 with useful life 10 years and nil residual value. Straight-line depreciation = ₹50,000 per year, included in fixed overheads for product costing.
Machine cost ₹2,00,000, residual value ₹20,000, useful life 6 years. SLM depreciation = (2,00,000-20,000)/6 = ₹30,000 per year.
- Determine asset cost, residual value, and useful life.
- Choose depreciation method (SLM, WDV, etc.).
- Compute annual depreciation.
- Include depreciation in fixed overheads for costing.
- Accumulate depreciation to reduce book value.
| Depreciation vs. Amortization | Depreciation for tangible assets; amortization for intangible assets. |
|---|---|
| Straight-Line vs. Written Down Value | SLM equal each year; WDV higher in earlier years, lower later. |
6 Differential Cost
| Category | Decision-Making Cost |
|---|---|
| Best Used In | Make-or-buy, special orders, equipment replacement |
| Key Formula | Differential cost = Cost under Option A − Cost under Option B |
| Exam Importance | High |
Differential Cost is the difference in total cost between two alternative courses of action, used for decision making.
Also called incremental cost, it represents the change in cost that results from selecting one option over another.
- Make-or-buy decisions
- Accepting special orders
- Replacing equipment
A company can make a component at ₹25 per unit or buy it at ₹20 per unit. Differential cost = ₹5 per unit; buying is cheaper.
Option A (make): total cost ₹1,00,000. Option B (buy): total cost ₹85,000. Differential cost = ₹15,000 in favor of buying.
- Identify the decision alternatives.
- Determine relevant costs for each alternative.
- Compute total cost for each alternative.
- Find the difference.
- Choose the alternative with lower differential cost (or higher differential revenue).
| Differential Cost vs. Opportunity Cost | Opportunity cost is the benefit foregone; differential cost is the difference between alternatives. |
|---|---|
| Differential Cost vs. Sunk Cost | Sunk cost is irrelevant; differential cost includes only future incremental costs. |
7 Direct Cost
| Category | Cost Classification |
|---|---|
| Best Used In | Product costing, job costing |
| Key Formula | Direct cost = Direct material + Direct labour + Direct expenses |
| Exam Importance | Very High |
Direct Cost is a cost that can be directly traced to a specific cost object (product, job, service) in an economically feasible way.
These are costs directly identifiable with a product or activity, such as raw materials and direct wages.
- Prime cost calculation
- Job and batch costing
- Cost tracing to cost objects
In a furniture manufacturing company, wood used for a chair is a direct material cost; wages paid to carpenter are direct labour; both are direct costs traceable to the chair.
Direct material ₹500, direct labour ₹200, direct expenses ₹50. Total direct cost = ₹750. This is the prime cost for the product.
- Identify the cost object.
- Trace all material, labour, and expenses directly attributable.
- Sum them to get total direct cost.
- Use in cost sheet as prime cost.
- Compare with indirect costs to arrive at total cost.
| Direct Cost vs. Indirect Cost | Indirect cost cannot be directly traced and requires allocation/apportionment. |
|---|---|
| Direct Cost vs. Prime Cost | Prime cost is the sum of all direct costs (material, labour, expenses). |
8 Direct Costing (Marginal Costing)
| Category | Costing Methodology |
|---|---|
| Best Used In | Short-term decision making, break-even |
| Key Formula | Contribution = Sales − Variable Cost |
| Exam Importance | Very High |
Direct Costing, also known as Marginal Costing, is a costing method where only variable costs are treated as product costs; fixed costs are treated as period costs and written off to P&L.
Under this method, inventory is valued at variable cost only, and contribution is the key measure for decision making.
- Break-even analysis
- Make-or-buy decisions
- Pricing in special orders
- Profit planning
A company calculates contribution per unit for each product to decide which product to promote, ignoring fixed costs in short-term decisions.
Selling price ₹100, variable cost ₹60. Contribution per unit ₹40. Fixed costs ₹50,000. To break even, sell 50,000/40 = 1,250 units.
Profit = Contribution − Fixed Cost
- Separate costs into fixed and variable.
- Compute contribution per unit.
- Deduct fixed costs to get profit.
- Use for break-even and target profit calculations.
- Compare with absorption costing profit when inventory changes.
| Direct Costing vs. Absorption Costing | Absorption includes fixed overhead in product cost; marginal excludes fixed overhead from product cost. |
|---|---|
| Direct Costing vs. Standard Costing | Standard costing sets predetermined rates; direct costing focuses on variable vs fixed classification. |
9 Direct Expenses
| Category | Cost Element |
|---|---|
| Best Used In | Prime cost calculation |
| Key Formula | Direct Expenses = Directly attributable expenses |
| Exam Importance | High |
Direct Expenses are expenses directly attributable to a specific product, job, or process, other than direct material and direct labour.
Examples include hire of special machinery, royalties, sub-contracting charges, and design fees for a specific job.
- Prime cost calculation
- Job costing for specific orders
- Process costing with special tools
A company takes a special order that requires hiring a machine for ₹5,000. This ₹5,000 is a direct expense charged to that job.
For a custom job: Direct material ₹10,000, direct labour ₹5,000, direct expenses (special tooling) ₹2,000. Prime cost = ₹17,000.
- Identify the job/product.
- List all expenses incurred exclusively for that job.
- Sum them to get total direct expenses.
- Add to direct material and direct labour to get prime cost.
- Use in cost sheet.
| Direct Expenses vs. Indirect Expenses | Indirect expenses cannot be directly traced; they are part of overheads. |
|---|---|
| Direct Expenses vs. Direct Material | Direct material is the physical material; direct expenses are other directly traceable costs (services, royalties). |
10 Direct Labour
| Category | Cost Element |
|---|---|
| Best Used In | Prime cost, production cost, labour cost control |
| Key Formula | Direct Labour Cost = Hours worked × Wage rate per hour |
| Exam Importance | High |
Direct Labour is the labour cost of workers directly involved in the production of goods or services, whose time can be traced to specific cost objects.
It includes wages of workers who physically convert raw materials into finished products, such as machine operators and assembly workers.
- Prime cost calculation
- Labour efficiency and rate variance analysis
- Job costing and process costing
A factory pays a machine operator ₹150 per hour. The operator works 8 hours on a specific job. Direct labour cost = 8 × 150 = ₹1,200 charged to that job.
Worker A spent 4 hours on Job X at ₹100/hour. Direct labour cost for Job X = 4 × 100 = ₹400.
- Identify direct workers and their time on specific jobs.
- Record hours using time sheets or job cards.
- Multiply hours by wage rate.
- Include as direct labour in product cost.
- Analyze variances for control.
| Direct Labour vs. Indirect Labour | Indirect labour supports production but cannot be traced to specific jobs (e.g., supervisors, maintenance). |
|---|---|
| Direct Labour vs. Direct Wages | Same in practice; direct wages is the monetary amount paid. |
11 Direct Labour Efficiency Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | Labour productivity measurement |
| Key Formula | (Standard Hours for Actual Output − Actual Hours) × Standard Rate |
| Exam Importance | High |
Direct Labour Efficiency Variance measures the difference between the standard hours allowed for actual production and the actual hours worked, valued at standard rate.
It shows whether labour was more or less efficient than expected in producing the actual output.
- Labour performance evaluation
- Identifying training needs
- Cost control in production
Standard hours for 100 units = 200 hours; actual hours taken = 220 hours. Standard rate ₹100/hour. Efficiency variance = (200-220) × 100 = ₹2,000 adverse (inefficient).
Actual output 500 units. Standard labour hours per unit 0.5, total standard hours = 250. Actual hours worked = 240. Standard rate ₹80. Labour efficiency variance = (250-240) × 80 = ₹800 favourable.
- Determine standard hours allowed for actual production.
- Record actual hours worked.
- Find the difference in hours.
- Multiply by standard rate.
- Interpret: positive = favourable, negative = adverse.
| Efficiency Variance vs. Rate Variance | Rate variance isolates wage rate difference; efficiency variance isolates hour usage difference. |
|---|---|
| Efficiency Variance vs. Idle Time Variance | Idle time variance is a sub-variance of efficiency due to abnormal idle time. |
12 Direct Labour Idle Time Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | Measuring cost of abnormal idle time |
| Key Formula | Idle Hours × Standard Rate |
| Exam Importance | Medium |
Direct Labour Idle Time Variance represents the cost of abnormal idle time (e.g., machine breakdown, power failure) that was not expected in the standard hours.
It is the portion of labour efficiency variance caused by workers being idle due to reasons beyond their control, valued at standard rate.
- Identifying production disruptions
- Labour cost control
- Separating controllable and non-controllable inefficiencies
Standard time for job 100 hours, actual hours 110. Out of actual, 15 hours were idle due to machine breakdown. Idle time variance = 15 × standard rate = adverse.
Standard rate ₹50/hour. Actual idle hours 20 (abnormal). Idle time variance = 20 × 50 = ₹1,000 adverse.
- Record total actual hours.
- Identify abnormal idle hours from time records.
- Multiply idle hours by standard rate.
- Report as adverse variance.
- Investigate cause and take corrective action.
| Idle Time vs. Efficiency Variance | Idle time is a component of efficiency variance due to stoppages. |
|---|---|
| Idle Time vs. Overtime Variance | Overtime variance relates to extra hours paid at premium; idle time is non-productive hours paid at standard rate. |
13 Direct Labour Mix Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | When different grades of labour are used |
| Key Formula | (Revised Standard Hours − Actual Hours) × Standard Rate |
| Exam Importance | Medium |
Direct Labour Mix Variance arises when different grades of labour are used in production, and the actual mix differs from the standard mix.
It measures the effect of using a different proportion of labour grades compared to standard, holding total hours constant.
- Industries with skilled/unskilled labour mix
- Labour cost control
- Performance evaluation of labour deployment
Standard mix: 60% skilled, 40% unskilled. Actual mix: 50% skilled, 50% unskilled. Mix variance shows cost impact of using more unskilled labour.
Standard: skilled 100 hrs @ ₹120, unskilled 100 hrs @ ₹80. Actual: skilled 120 hrs, unskilled 80 hrs. Total actual hours = 200. Revised standard hours for actual total: skilled 100, unskilled 100. Mix variance = (100-120)×120 + (100-80)×80 = -2400 + 1600 = -₹800 adverse (less skilled than standard).
- Determine standard mix for each labour grade.
- Compute revised standard hours (actual total hours × standard proportion).
- Find difference between revised standard and actual hours for each grade.
- Multiply by standard rate for each grade.
- Sum to get mix variance.
| Mix Variance vs. Yield Variance | Mix variance isolates proportion effect; yield variance isolates total output effect. |
|---|---|
| Mix Variance vs. Rate Variance | Rate variance is price-related; mix variance is proportion-related. |
14 Direct Labour Rate Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | Wage rate control |
| Key Formula | (Standard Rate − Actual Rate) × Actual Hours |
| Exam Importance | High |
Direct Labour Rate Variance is the difference between the standard wage rate and the actual wage rate paid, multiplied by the actual hours worked.
It measures the effect of paying a higher or lower wage rate than standard for the actual hours used.
- Wage negotiation analysis
- Labour cost control
- Performance evaluation of HR/payroll
Standard rate ₹100/hour; actual rate ₹110/hour; actual hours 200. Rate variance = (100-110) × 200 = ₹2,000 adverse.
Standard rate ₹80/hour; actual rate ₹75/hour; actual hours 300. Rate variance = (80-75) × 300 = ₹1,500 favourable.
- Determine standard wage rate for the grade.
- Record actual wage rate paid.
- Record actual hours worked.
- Compute variance using formula.
- Analyze causes (e.g., overtime premium, higher grade labour).
| Rate Variance vs. Efficiency Variance | Rate variance is price-related; efficiency variance is usage-related. |
|---|---|
| Rate Variance vs. Total Labour Cost Variance | Total labour cost variance = Rate variance + Efficiency variance (+ idle time if separated). |
15 Direct Labour Yield Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | Measuring output from labour input |
| Key Formula | (Standard Yield for Actual Input − Actual Yield) × Standard Cost per Unit |
| Exam Importance | Medium |
Direct Labour Yield Variance measures the difference between the actual output and the standard output that should have been produced from the actual labour hours used.
It focuses on the productivity of the entire labour mix in terms of output, rather than hours.
- Process industries with labour mix
- Yield improvement programs
- Labour productivity analysis
Standard: 100 hours should produce 500 units. Actual: 100 hours produced 480 units. Yield variance = (500-480) × standard cost per unit = 20 units × ₹10 = ₹200 adverse.
Actual labour hours 200. Standard output per hour 5 units; standard output = 1000 units. Actual output = 950 units. Standard cost per unit ₹20. Yield variance = (1000-950) × 20 = ₹1,000 adverse.
- Determine actual labour hours.
- Compute standard yield from actual hours (standard output rate).
- Compare with actual output.
- Multiply difference by standard cost per unit.
- Interpret adverse if actual yield < standard yield.
| Yield Variance vs. Mix Variance | Mix variance is proportion effect; yield variance is output effect. |
|---|---|
| Yield Variance vs. Efficiency Variance | Efficiency variance is in hours; yield variance is in units of output. |
16 Direct Material
| Category | Cost Element |
|---|---|
| Best Used In | Prime cost, material cost control |
| Key Formula | Direct Material Cost = Quantity used × Unit cost |
| Exam Importance | Very High |
Direct Material is the raw material that becomes an integral part of the finished product and can be directly traced to it.
It includes materials that are physically identifiable in the finished product, such as wood in furniture, steel in cars, or fabric in garments.
- Prime cost calculation
- Material price and usage variance analysis
- Inventory valuation
A chair manufacturer uses 5 kg of wood per chair at ₹50/kg. Direct material cost per chair = 5 × 50 = ₹250.
Production of 100 units requires 500 kg of raw material at ₹20/kg. Total direct material cost = 500 × 20 = ₹10,000.
- Identify materials that are directly traceable to the product.
- Record quantities issued from stores.
- Determine unit cost (using FIFO, weighted average, etc.).
- Multiply quantity by unit cost.
- Include in prime cost.
| Direct Material vs. Indirect Material | Indirect materials are consumables not traceable to specific products (e.g., lubricants, glue). |
|---|---|
| Direct Material vs. Raw Material | Raw material is any unprocessed input; direct material is that which becomes part of final product. |
17 Direct Material Mix Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | When multiple materials are mixed in production |
| Key Formula | (Revised Standard Quantity − Actual Quantity) × Standard Price |
| Exam Importance | High |
Direct Material Mix Variance arises when the actual proportion of different materials used differs from the standard mix, holding total input quantity constant.
It isolates the effect of changing the blend of materials from the standard proportions.
- Chemical, food, and pharmaceutical industries
- Material cost control
- Optimizing material mix
A company standard mix is 70% material A and 30% material B. Actual mix used 60% A and 40% B. Mix variance shows cost impact of using more B.
Standard: A 100 kg @ ₹10, B 100 kg @ ₹20. Actual: A 120 kg, B 80 kg. Total actual quantity = 200 kg. Revised standard for A = 100 kg, B = 100 kg. Mix variance = (100-120)×10 + (100-80)×20 = -200 + 400 = ₹200 favourable (using less A and more B but B is cheaper per kg? Actually A cheaper, so adverse? Let’s check: Standard cost per kg mix = (100×10+100×20)/200=15. Actual mix cost = (120×10+80×20)/200=14. Favourable ₹200.)
- Determine standard mix proportions for each material.
- Compute revised standard quantity for actual total quantity.
- Find difference between revised standard and actual quantities.
- Multiply by standard price for each material.
- Sum to get mix variance.
| Mix Variance vs. Yield Variance | Mix variance isolates proportion effect; yield variance isolates output effect. |
|---|---|
| Mix Variance vs. Price Variance | Price variance is rate effect; mix variance is proportion effect. |
18 Direct Material Price Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | Material purchase price control |
| Key Formula | (Standard Price − Actual Price) × Actual Quantity |
| Exam Importance | Very High |
Direct Material Price Variance is the difference between the standard price and actual price paid for materials, multiplied by the actual quantity purchased or used.
It measures the effect of paying more or less than the standard price for materials.
- Purchase department performance evaluation
- Material cost control
- Supplier negotiation analysis
Standard price ₹20/kg; actual price ₹22/kg; actual quantity purchased 500 kg. Price variance = (20-22)×500 = ₹1,000 adverse.
Standard price ₹15/kg; actual price ₹14/kg; actual quantity 1000 kg. Price variance = (15-14)×1000 = ₹1,000 favourable.
- Determine standard price per unit of material.
- Record actual price paid.
- Record actual quantity purchased/used.
- Compute variance using formula.
- Analyze causes (market fluctuation, bulk discount, emergency purchase).
| Price Variance vs. Usage Variance | Usage variance is quantity effect; price variance is rate effect. |
|---|---|
| Price Variance vs. Total Material Cost Variance | Total material cost variance = Price variance + Usage variance. |
19 Direct Material Usage Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | Material consumption control |
| Key Formula | (Standard Quantity for Actual Output − Actual Quantity Used) × Standard Price |
| Exam Importance | Very High |
Direct Material Usage Variance (also called quantity variance) is the difference between the standard quantity of materials that should have been used for actual production and the actual quantity used, valued at standard price.
It measures efficiency in material consumption; whether more or less material was used than expected for the output achieved.
- Production department performance
- Identifying waste and scrap
- Material cost control
Standard material required for 100 units = 500 kg; actual used = 520 kg. Standard price ₹10/kg. Usage variance = (500-520)×10 = ₹200 adverse (used extra material).
Actual output 800 units, standard material per unit 2 kg, total standard = 1600 kg. Actual used = 1550 kg. Standard price ₹25/kg. Usage variance = (1600-1550)×25 = ₹1,250 favourable.
- Compute standard quantity allowed for actual production.
- Record actual quantity of material used.
- Find difference.
- Multiply by standard price.
- Interpret: favourable if actual used < standard.
| Usage Variance vs. Price Variance | Usage is quantity; price is rate. |
|---|---|
| Usage Variance vs. Mix Variance | Mix variance is proportion; usage variance is total quantity. |
20 Direct Material Yield Variance
| Category | Standard Costing / Variance Analysis |
|---|---|
| Best Used In | Measuring output from material input |
| Key Formula | (Standard Yield for Actual Input − Actual Yield) × Standard Cost per Unit |
| Exam Importance | Medium |
Direct Material Yield Variance measures the difference between the actual output and the standard output expected from the actual material input.
It focuses on how much finished product was obtained from a given quantity of materials, isolating the efficiency of conversion.
- Process industries
- Quality and waste analysis
- Material cost control
Standard yield from 1000 kg material = 900 units. Actual yield = 850 units. Standard cost per unit ₹5. Yield variance = (900-850)×5 = ₹250 adverse.
Actual material input 2000 kg. Standard output rate 0.5 units/kg, expected output = 1000 units. Actual output = 950 units. Standard cost per unit ₹30. Yield variance = (1000-950)×30 = ₹1,500 adverse.
- Determine actual material input quantity.
- Compute standard yield from actual input.
- Compare with actual output.
- Multiply difference by standard cost per unit.
- Interpret adverse if actual yield < standard yield.
| Yield Variance vs. Mix Variance | Mix is proportion; yield is output quantity. |
|---|---|
| Yield Variance vs. Usage Variance | Usage variance is in input quantity; yield variance is in output quantity. |
21 Direct Wages
| Category | Labour Cost Element |
|---|---|
| Best Used In | Prime cost, job costing |
| Key Formula | Direct Wages = Direct Labour Hours × Wage Rate |
| Exam Importance | High |
Direct Wages are the monetary compensation paid to workers directly engaged in production, traceable to specific jobs or products.
Direct wages are part of direct labour cost and form a component of prime cost.
- Prime cost calculation
- Job and batch costing
- Labour variance analysis
A worker paid ₹200 per hour works 10 hours on a job. Direct wages = 200 × 10 = ₹2,000 charged to the job.
Job Y required 15 hours of direct labour at ₹120/hour. Direct wages = 15 × 120 = ₹1,800.
- Record direct labour hours on job cards/time sheets.
- Determine wage rate.
- Multiply hours by rate.
- Include in prime cost.
- Use for variance analysis comparing standard vs actual.
| Direct Wages vs. Indirect Wages | Indirect wages are for support staff not traceable to specific jobs. |
|---|---|
| Direct Wages vs. Salaries | Wages are usually hourly; salaries are fixed monthly for non-production staff. |
22 Discretionary Cost
| Category | Cost Behaviour |
|---|---|
| Best Used In | Short-term cost reduction decisions |
| Key Formula | No formula — management-controlled |
| Exam Importance | Medium |
A Discretionary Cost is a fixed cost that can be adjusted or eliminated in the short term at management’s discretion, without affecting immediate operations.
Also called managed or programmed costs, examples include advertising, research and development, employee training, and maintenance.
- Budget cuts
- Cost reduction programs
- Flexible budgeting
During a slowdown, a company reduces its advertising budget from ₹50,000 to ₹30,000 per month because it is discretionary.
Management decides to postpone employee training programs to save ₹2,00,000 this quarter. Training cost is discretionary.
- Identify fixed costs that are not essential for immediate operations.
- Classify them as discretionary.
- For cost reduction, evaluate which discretionary costs can be cut.
- Implement cuts without disrupting production.
- Monitor impact on long-term effectiveness.
| Discretionary vs. Committed Cost | Committed cost cannot be easily changed (e.g., lease); discretionary can be adjusted. |
|---|---|
| Discretionary vs. Variable Cost | Variable cost changes with activity; discretionary cost is fixed but manageable. |
23 Distribution Overheads
| Category | Overhead Classification |
|---|---|
| Best Used In | Full cost per unit, pricing |
| Key Formula | Distribution overhead rate = Total distribution overhead / Total units distributed |
| Exam Importance | Medium |
Distribution Overheads are indirect costs associated with the distribution of finished goods to customers, including warehousing, delivery, and sales order processing.
These are selling and distribution expenses that are part of total cost but not directly traceable to individual products; they are apportioned and absorbed.
- Full cost per unit calculation
- Pricing decisions including delivery
- Cost control in logistics
A company incurs ₹2,00,000 distribution overhead for 10,000 units delivered. Distribution overhead per unit = ₹20, added to total cost.
Total distribution overhead ₹1,50,000; units sold 15,000. Rate = ₹10/unit. A product with total production cost ₹100 will have total cost ₹110 after adding distribution overhead.
- Collect all distribution costs (warehouse, transport, packing for dispatch).
- Choose a base (units, sales value, weight).
- Compute overhead rate.
- Apply to products.
- Include in total cost for pricing.
| Distribution vs. Selling Overheads | Selling overheads are promotional; distribution overheads are logistics. |
|---|---|
| Distribution vs. Administrative Overheads | Admin overheads are general management; distribution is delivery-related. |
24 Dual Rate Method
| Category | Service Department Cost Allocation |
|---|---|
| Best Used In | Allocating service dept costs to production depts |
| Key Formula | Fixed portion allocated on capacity; variable portion on actual usage |
| Exam Importance | Low |
Dual Rate Method is a method of allocating service department costs that separates fixed and variable costs, allocating fixed costs on the basis of long-term capacity and variable costs on actual usage.
This method prevents the distortion caused by allocating all service costs on actual usage, which may encourage over-consumption or penalize efficient departments.
- Large organizations with service departments
- Responsibility accounting
- Fair cost allocation
Maintenance department fixed costs ₹1,00,000 allocated based on budgeted capacity; variable costs ₹20 per machine hour allocated on actual hours used by production departments.
Service dept fixed costs ₹60,000, budgeted capacity 10,000 hours. Fixed rate = ₹6/hour. Variable cost ₹2/hour. Department A used 800 hours. Allocation = (800×6) + (800×2) = 4,800 + 1,600 = ₹6,400.
Variable Cost Allocation = Variable Rate × Actual Usage
- Separate service department costs into fixed and variable.
- Determine fixed cost allocation base (budgeted capacity).
- Determine variable cost rate per unit of activity.
- Allocate fixed cost based on capacity share.
- Allocate variable cost based on actual usage.
| Dual Rate vs. Single Rate Method | Single rate combines fixed and variable into one rate; dual rate separates them. |
|---|---|
| Dual Rate vs. Activity-Based Costing | ABC uses multiple drivers; dual rate is simpler but also separates fixed/variable. |
25 Dumping (Pricing)
| Category | Pricing Strategy |
|---|---|
| Best Used In | International trade, market penetration |
| Key Formula | Export price < Normal domestic price |
| Exam Importance | Low |
Dumping is a pricing strategy where a company exports a product at a price lower than the price it charges in its home market, often below cost.
It is used to gain market share in foreign markets or to dispose of surplus production, but it may be considered unfair trade practice.
- Entering new export markets
- Disposing excess inventory
- Predatory pricing to eliminate competitors
A manufacturer sells a product domestically at ₹100 but exports it at ₹70 to capture a foreign market. This is dumping if the export price is below normal value.
Domestic price ₹500/unit. Export price ₹350/unit, which is below total cost ₹400. Company is dumping to gain market share; WTO may impose anti-dumping duty.
- Determine normal domestic selling price.
- Determine export selling price.
- Compare; if export price < domestic price, dumping exists.
- Compute dumping margin.
- Evaluate impact and possible anti-dumping duties.
| Dumping vs. Price Discrimination | Dumping is price discrimination between domestic and export markets. |
|---|---|
| Dumping vs. Predatory Pricing | Predatory pricing may occur domestically; dumping is cross-border. |
26 Direct Expenses Budget
| Category | Budgeting |
|---|---|
| Best Used In | Planning direct expenses for production |
| Key Formula | Budgeted direct expenses = Estimated units × Rate per unit |
| Exam Importance | Low |
A Direct Expenses Budget is a detailed plan of the expected direct expenses (other than material and labour) to be incurred for the budgeted level of production.
It forecasts costs like royalties, sub-contracting charges, and special tools required directly for production.
- Comprehensive production budget
- Cost planning and control
- Prime cost estimation
Budgeted production 10,000 units; direct expenses expected at ₹5 per unit. Direct expenses budget = ₹50,000.
Budgeted production 8,000 units, sub-contracting cost ₹4/unit, royalties ₹1/unit. Total direct expenses budget = 8,000 × (4+1) = ₹40,000.
- Determine budgeted production volume.
- Identify all direct expense items.
- Estimate cost per unit for each item.
- Multiply by production units.
- Sum to get total direct expenses budget.
| Direct Expenses Budget vs. Production Budget | Production budget specifies quantities; direct expenses budget specifies the cost of direct expenses for those quantities. |
|---|---|
| Direct Expenses Budget vs. Overhead Budget | Overhead budget includes indirect costs; direct expenses are direct. |
27 Direct Labour Budget
| Category | Budgeting |
|---|---|
| Best Used In | Planning labour hours and cost |
| Key Formula | Budgeted labour cost = Budgeted hours × Budgeted rate |
| Exam Importance | Medium |
A Direct Labour Budget is a plan of the direct labour hours and cost required to achieve the budgeted production level.
It translates production requirements into labour hours and monetary terms, facilitating labour planning and cost control.
- Manpower planning
- Labour cost budgeting
- Cash flow planning for wages
Budgeted production 5,000 units, standard labour hours per unit 0.5, wage rate ₹80/hour. Direct labour budget = 5,000 × 0.5 × 80 = ₹2,00,000.
Production budget 12,000 units, labour requirement 1.5 hours/unit, rate ₹100/hr. Total direct labour budget = 12,000 × 1.5 × 100 = ₹18,00,000.
- Determine budgeted production volume.
- Estimate standard labour hours per unit.
- Determine budgeted wage rate.
- Multiply to get total direct labour cost.
- Use for cash planning and variance analysis.
| Direct Labour Budget vs. Direct Material Budget | Material budget is for materials; labour budget is for human resources. |
|---|---|
| Direct Labour Budget vs. Labour Hour Budget | Labour hour budget is in hours; direct labour budget is in monetary terms. |
28 Direct Material Budget
| Category | Budgeting |
|---|---|
| Best Used In | Planning material purchases and cost |
| Key Formula | Budgeted material cost = Required quantity × Budgeted price |
| Exam Importance | High |
A Direct Material Budget is a plan that estimates the quantity and cost of direct materials needed to meet the budgeted production, including inventory adjustments.
It ensures that sufficient materials are available for production and purchasing is planned in advance.
- Production planning
- Material procurement planning
- Cash flow planning for purchases
Budgeted production 10,000 units, material required 2 kg/unit, desired ending inventory 500 kg, beginning inventory 300 kg. Required purchases = (10,000×2)+500-300 = 20,200 kg. At ₹15/kg, material purchase budget = ₹3,03,000.
Budgeted production 8,000 units, material per unit 1.5 kg, beginning inventory 1,000 kg, desired ending 1,200 kg. Required purchase = (8,000×1.5)+1,200-1,000 = 12,200 kg. At ₹20/kg, budget = ₹2,44,000.
Material Budget (₹) = Required Purchases × Budgeted Price per kg
- Determine budgeted production quantity.
- Compute total material required.
- Add desired ending inventory and subtract beginning inventory.
- Multiply required purchases by budgeted price.
- Use for purchasing and cash flow planning.
| Direct Material Budget vs. Material Purchase Budget | Direct material budget includes inventory adjustments; material purchase budget may be same. |
|---|---|
| Direct Material Budget vs. Production Budget | Production budget is in units; material budget is in kgs and rupees. |
