A to Z Costing Knowledge Glossary — Letter P
Investopedia-style costing concepts explained with formulas, practical examples, comparisons, and exam-focused teaching tips.
1 Prime Cost
| Category | Cost Elements / Cost Sheet |
|---|---|
| Best Used In | Direct product cost tracing, Basic job pricing |
| Key Formula | Direct Material + Direct Labour + Direct Expenses |
| Exam Importance | Extremely High |
Prime Cost is the aggregate of all costs directly traceable to a specific product, job, or process. It serves as the foundation (the “primary” layer) upon which all other indirect factory overheads are later built.
If you can look at a finished product and mathematically prove exactly how much material went into it and exactly how many hours a worker spent holding it, those costs are Prime Costs. It excludes any shared, general factory costs like rent or supervisor salaries.
- First step in preparing a standard Cost Sheet
- Base for apportioning certain overheads (e.g., absorbing admin overhead as a % of prime cost)
- Analyzing the raw efficiency of the production line
A custom tailor makes a suit. The silk fabric (₹5,000) and the tailor’s hourly wage to sew that specific suit (₹2,000) form the Prime Cost of ₹7,000. Before setting the selling price, the tailor will add a margin to this ₹7,000 to cover the shop’s rent and electricity.
Direct Material Consumed = ₹1,00,000
Direct Wages (Productive Labour) = ₹50,000
Chargeable Direct Expenses (Special Mould Hire) = ₹10,000
Prime Cost = ₹1,00,000 + ₹50,000 + ₹10,000 = ₹1,60,000.
- Calculate Direct Material Consumed (Opening Stock + Purchases – Closing Stock of RM).
- Add Direct Labour (Wages paid to workers physically making the product).
- Add Direct Expenses (Royalties per unit, specific job design costs).
- Crucial: Ensure no factory overheads (lubricants, factory rent) sneak into this total.
| Prime Cost vs. Conversion Cost | Prime Cost includes Direct Materials. Conversion Cost is the cost of transforming that material (Direct Labour + Factory Overheads). Direct Labour is the only element shared by both. |
|---|
2 Process Costing
| Category | Costing Methods |
|---|---|
| Best Used In | Chemicals, Oil refining, Textiles, FMCG |
| Key Formula | Total Process Cost ÷ Equivalent Good Units |
| Exam Importance | Extremely High |
Process Costing is a method of accounting used by continuous mass-production industries where goods are identical, indistinguishable, and move sequentially from one department (process) to the next.
Unlike Job Costing (where you track costs for a custom wedding dress), Process Costing averages total costs over thousands of identical units. The output of Process A becomes the raw material input for Process B, carrying its accumulated costs with it until it becomes a Finished Good.
- Oil refineries (Crude → Petrol → Jet Fuel)
- FMCG food production (Mixing → Baking → Packaging)
- Valuing Work-in-Progress (WIP) using Equivalent Units
A sugar mill buys sugarcane. In Process 1 (Crushing), it costs ₹50,000 to make sugarcane juice. This juice is transferred to Process 2 (Boiling) at a cost of ₹50,000. Process 2 spends another ₹20,000 on heat and labor to turn it into raw sugar. The final cost of the sugar is the accumulated ₹70,000.
Process A Account:
Debit: Raw Materials (100 kg) = ₹10,000, Labour = ₹5,000.
Credit: Normal Loss (10 kg scrap sold at ₹100).
Good Output = 90 kg.
Cost per kg transferred to Process B = (15,000 – 100) ÷ 90 = ₹165.55/kg.
- Debit the Process Account with all Materials, Labour, and Overheads for that department.
- Credit the account with the cash recovered from Normal (expected) Loss.
- Divide the net cost by the expected good units to find the Cost per Unit.
- Use this rate to value Abnormal Loss, Abnormal Gain, and Good Output transferred to the next stage.
| Process Costing vs. Job Costing | Job costing tracks costs per unique customer order. Process costing dumps all costs into a time period (a month) and averages it over the thousands of identical clones produced. |
|---|
3 Profit-Volume (P/V) Ratio
| Category | Marginal Costing / CVP Analysis |
|---|---|
| Best Used In | Break-Even analysis, Profit forecasting |
| Key Formula | (Contribution ÷ Sales) × 100 |
| Exam Importance | Extremely High |
The Profit-Volume (P/V) Ratio, also known as the Contribution Margin Ratio, expresses the relationship between Contribution and Sales as a percentage. It shows how much contribution is generated by every ₹100 of sales revenue.
It is the most critical diagnostic number in Marginal Costing. Because fixed costs remain constant, the P/V ratio tells you exactly how fast your profits will grow once you pass the break-even point. A higher P/V ratio means highly profitable sales.
- Calculating Break-Even Point (BEP = Fixed Cost ÷ P/V Ratio)
- Determining required sales to meet a target profit
- Deciding which product to push in marketing campaigns (push the highest P/V)
A software company sells an app for ₹1,000. Variable server costs are ₹200. Contribution is ₹800. The P/V Ratio is 80%. This means for every ₹1 Crore of new sales they generate, ₹80 Lakhs flows directly to the bottom line (to cover fixed costs, then profit).
Selling Price = ₹50. Variable Cost = ₹30.
Contribution = ₹20.
P/V Ratio = (20 ÷ 50) × 100 = 40%.
If management wants to know the Contribution on ₹5,00,000 of sales, they simply calculate 40% of 5L = ₹2,00,000.
Two-Period Formula: P/V Ratio = Change in ProfitChange in Sales × 100
- Identify Sales and Variable Cost per unit (or in total).
- Subtract Variable Cost to find Contribution.
- Divide by Sales to find the percentage.
- Crucial Exam Trick: If given two years of data (e.g., Year 1 profit ₹10k, Year 2 profit ₹15k), use the “Change in Profit ÷ Change in Sales” formula to instantly find the P/V Ratio.
| P/V Ratio vs. Net Profit Margin | Net profit margin changes wildly as sales volume changes because of fixed costs. The P/V ratio remains completely constant regardless of volume (as long as selling price and variable cost per unit remain constant). |
|---|
4 Period Cost
| Category | Cost Classification |
|---|---|
| Best Used In | Financial Reporting, Marginal Costing |
| Key Formula | Expensed immediately to P&L in the current period |
| Exam Importance | High |
A Period Cost is any cost that cannot be capitalized into prepaid expenses, inventory, or fixed assets. Instead, it is tied to a unit of time rather than a unit of production, and is immediately written off to the Income Statement.
Under Marginal Costing, all fixed costs are treated as period costs. In standard Financial Accounting, administrative salaries, office rent, and advertising are period costs because they expire with time, regardless of how many products the factory built.
- Income Statement preparation (Below the Gross Profit line)
- Marginal Costing profit calculation
- Inventory valuation (excluding period costs keeps inventory values compliant with Ind AS 2)
A company pays ₹1 Lakh for a Super Bowl advertisement. This ad does not physically touch the product being manufactured. Therefore, it cannot be added to the cost of the goods sitting in the warehouse. It is a Period Cost and must be deducted entirely from this year’s profits.
Factory wages = Product Cost (tied to inventory).
CEO Salary = Period Cost (tied to the calendar month).
If 1,000 units are left unsold at year-end, the Factory wages used to make them are deferred to next year as an asset (Inventory). The CEO’s salary is expensed immediately.
- Identify the expense.
- Ask: “Is this required to physically manufacture the product?”
- If NO (e.g., sales commissions, head office rent), it is a Period Cost.
- Expense it 100% on this month’s P&L. Do not let it leak into closing stock valuation.
| Period Cost vs. Product Cost | Product costs attach to the physical item and sit on the Balance Sheet until the item is sold. Period costs attach to the calendar and hit the Income Statement immediately. |
|---|
5 Product Cost (Inventoriable Cost)
| Category | Cost Classification |
|---|---|
| Best Used In | Inventory Valuation (Ind AS 2), Absorption Costing |
| Key Formula | Direct Material + Direct Labour + Factory Overhead |
| Exam Importance | High |
Product Costs (also known as Inventoriable Costs) are all the direct and indirect manufacturing costs incurred to physically produce a good and bring it to its present location and condition.
These costs “attach” themselves to the product. As long as the product sits unsold in the warehouse, these costs are treated as an Asset on the Balance Sheet. Only when the product is sold do they move to the Income Statement as “Cost of Goods Sold” (COGS) through the matching principle.
- Valuing Closing Work-In-Progress (WIP) and Finished Goods
- Preparing Absorption Costing statements
- Compliance with GAAP and Accounting Standards
A furniture maker spends ₹1,000 on wood and ₹500 on factory rent to make a table in December. It doesn’t sell. In December’s financial statements, the business does not show a ₹1,500 expense. Instead, they show a ₹1,500 Asset (Inventory). The Product Cost is deferred until a customer actually buys it.
To make 1 unit:
Raw Material: ₹50
Factory Labour: ₹30
Factory Power (Variable OH): ₹10
Factory Supervisor (Fixed OH): ₹20
Total Product Cost (Absorption): ₹110 per unit.
(Any Selling/Admin cost is strictly excluded).
- Gather all Prime Costs (Direct Material + Direct Labour).
- Add all Factory Overheads (both fixed and variable).
- Stop there. Do not add general administration or selling expenses.
- Use this total to value any unsold stock at month-end.
| Product Cost in Absorption vs. Marginal Costing | Absorption costing includes Fixed Factory Overhead as a Product Cost. Marginal costing strips it out, treating Fixed Factory Overhead as a Period Cost. |
|---|
6 Pre-determined Overhead Rate
| Category | Overhead Accounting |
|---|---|
| Best Used In | Standard Costing, Real-time Job Quoting |
| Key Formula | Estimated Overheads ÷ Estimated Activity |
| Exam Importance | Very High |
A Pre-determined Overhead Rate is an estimated rate computed at the very beginning of the financial year. It is used to apply overhead costs to jobs, batches, or products continuously throughout the year.
Waiting for actual utility bills and rent checks at year-end makes pricing impossible during the year. By forecasting total overheads and total activity, accountants create a “standard toll rate” that products pay as they move through the factory, allowing for real-time cost sheets.
- Quoting prices to customers before work begins
- Smoothing out seasonal cost spikes (e.g., high heating bills in winter are averaged over the whole year)
- Calculating Under/Over absorption at period close
A construction company estimates ₹12 Lakhs in overhead for the year and 12,000 direct labour hours. Rate = ₹100/hr. In June, a client asks for a quote. The estimator calculates 50 hours of labour. They instantly add ₹5,000 (50 × 100) to the quote for overheads without waiting to see what June’s actual electricity bill is.
Budgeted Annual Factory Overhead = ₹24,00,000.
Budgeted Machine Hours = 1,20,000 hrs.
Pre-determined Rate = 24L ÷ 1.2L = ₹20 per Machine Hour.
Job 55 uses 10 Machine Hours. It absorbs ₹200 of factory overheads.
- At the start of the year, estimate the total expected overhead costs (Numerator).
- Estimate the total capacity or output that will drive those costs (Denominator).
- Divide to lock in the rate for the year.
- Use this exact rate every single day for 365 days.
- Reconcile against the Actual overheads on Day 365 to find the variance.
| Pre-determined Rate vs. Actual Rate | Actual rate = Actual Cost ÷ Actual Base. It is 100% accurate but 100% useless for daily pricing because the data is 12 months late. |
|---|
7 Perpetual Inventory System
| Category | Material Costing / Inventory Control |
|---|---|
| Best Used In | Continuous monitoring of high-value goods |
| Key Formula | Real-time updates to Stores Ledger & Bin Cards |
| Exam Importance | Medium |
A Perpetual Inventory System is a method of recording inventory balances where every single receipt, issue, and return of materials is recorded immediately in real-time, meaning the book balance of stock is known at any given second.
It acts as the backbone of modern ERP systems. Because the ledger is always perfectly up-to-date, management can identify stockouts before they happen, calculate Moving Average prices instantly, and spot theft by comparing the “perpetual book balance” against random physical spot checks.
- Automated Reorder Level triggers
- Maintaining the Stores Ledger (FIFO/LIFO tables)
- Continuous physical verification programs
In a supermarket with barcode scanners, every time a customer buys a bottle of shampoo, the perpetual system deducts 1 from the master database instantly. The manager can check their tablet at 2:00 PM and know exactly how many bottles are left without having to go to the back room and count them.
Opening Balance: 100 units.
10:00 AM: Receipt of 50 units. (System updates: 150 units).
1:00 PM: Issue of 20 units to production. (System updates: 130 units).
The Stores Ledger is permanently balanced after every single transaction.
(Calculated continuously after every transaction)
- Maintain a Bin Card (for quantities) and a Stores Ledger (for quantities and values).
- Update the balance the exact moment a Goods Received Note or Material Requisition Note is processed.
- Conduct “Continuous Stock Taking” (count a few random items every day) to ensure the physical stock matches the perpetual computer balance.
| Perpetual System vs. Periodic System | Periodic waits until the end of the month, shuts down the warehouse, and counts everything manually to find out what was used. Perpetual tracks it constantly like a bank account. |
|---|
8 Periodic Inventory System
| Category | Material Costing / Inventory Control |
|---|---|
| Best Used In | Small businesses, low-value bulk items |
| Key Formula | COGS = Opening + Purchases − Physical Closing Stock |
| Exam Importance | Low-Medium |
A Periodic Inventory System is an accounting method where inventory balances and the Cost of Goods Sold (COGS) are not updated continuously. Instead, they are calculated only at the end of an accounting period via a physical manual count.
During the month, a company simply records “Purchases.” They don’t track the cost of every single issue to the factory. At month-end, they stop production, manually count what is left in the warehouse, and use basic math to figure out what must have been consumed.
- Hardware stores selling thousands of cheap nails
- Small retail businesses without barcode scanners
- Calculating year-end financial statement COGS
A bakery buys 100 kg of sugar in a month. They don’t record every time the chef takes 100 grams for a cake. On the 31st, they weigh the sugar bag. If 20 kg are left, they mathematically assume 80 kg were consumed (Opening + Purchases – Closing). They record one bulk expense entry for the 80 kg.
Opening Stock on Jan 1 = ₹10,000.
Purchases during Jan = ₹40,000.
(No issues are recorded during Jan).
Physical count on Jan 31 reveals stock worth ₹15,000.
Cost of Materials Consumed = (10,000 + 40,000) – 15,000 = ₹35,000.
- Record Opening Stock value on Day 1.
- Dump all new purchases into a general “Purchases” account.
- At period end, execute a physical, manual stocktake to find the Closing Stock.
- Use the formula to “plug” the missing number, which represents the material consumed.
| Periodic vs. Perpetual Inventory | Periodic is blind during the month; it only knows the balance on the last day. The major flaw of Periodic is that it assumes everything missing was “consumed”—it completely hides theft and spoilage, blending them into normal COGS. |
|---|
9 Performance Budgeting
| Category | Budgeting & Forecasting |
|---|---|
| Best Used In | Government, Non-Profits, Service Sectors |
| Key Formula | Funding allocated based on achieving specific physical targets |
| Exam Importance | Medium (Theory) |
Performance Budgeting is a budget system that strictly links the allocation of financial resources to the achievement of measurable, physical, operational results or outcomes.
Traditional budgets just list “Line Items” (e.g., ₹5 Lakhs for Salaries, ₹2 Lakhs for Paper). A Performance Budget lists “Outcomes” (e.g., ₹7 Lakhs to educate 500 children). It forces management to focus on what the money is actually accomplishing, rather than just what it is being spent on.
- Government municipalities (allocating road repair funds based on kilometers paved)
- Hospitals (allocating funds based on patients treated)
- Ensuring accountability in departments that don’t generate revenue
The city police department requests ₹10 Crores. Under traditional budgeting, they justify it by showing salary increases. Under Performance Budgeting, they must promise to reduce crime rates by 5% and respond to calls in under 10 minutes. Next year’s budget depends on whether they hit those specific physical performance targets.
Department: Public Health.
Financial Budget: ₹50 Lakhs for vaccinations.
Performance Target: Vaccinate 1,00,000 children.
Evaluation: If they spend ₹50 Lakhs but only vaccinate 50,000 children, the budget execution is evaluated as a failure of performance efficiency.
- Define the strategic objectives of the department (e.g., Cleaner streets).
- Establish measurable physical targets (e.g., 500 tons of garbage removed).
- Calculate the standard cost to achieve that specific physical output.
- Allocate funds. Evaluate managers on the output, not just on whether they stayed under budget.
| Performance Budget vs. Zero-Based Budgeting (ZBB) | ZBB focuses on justifying the need for an activity to exist at all. Performance budgeting focuses on measuring the output efficiency of an activity that is already approved. |
|---|
10 Practical Capacity
| Category | Capacity Planning / Overhead Absorption |
|---|---|
| Best Used In | Setting standard overhead rates |
| Key Formula | Theoretical Capacity − Unavoidable Operating Interruptions |
| Exam Importance | High |
Practical Capacity is the maximum level of production output a factory can realistically achieve under normal, real-world operating conditions. It acts as the benchmark for calculating Fixed Overhead Absorption Rates.
While Theoretical (Maximum) capacity assumes the machines run 24/7/365 with zero breaks, Practical Capacity subtracts unavoidable downtime: Sundays, public holidays, scheduled preventive maintenance, and normal worker rest breaks. It is the highest level of output a firm can sustain long-term.
- Calculating the Denominator for the Pre-determined Overhead Rate
- Measuring Idle Capacity Variance
- Setting long-term standard costs
A machine can mathematically punch 100 holes an hour. 24 hours a day = 2,400 holes. This is theoretical. But the factory manager knows the machine needs 2 hours of cooling, and workers take a 1-hour lunch. The Practical Capacity is 21 hours × 100 = 2,100 holes. Accounting will use 2,100 to set standard costs.
Theoretical Capacity = 10,000 Machine Hours.
Minus: Weekend shutdowns (1,500 hrs) + Routine Maintenance (500 hrs).
Practical Capacity = 8,000 Machine Hours.
If Fixed Overheads are ₹8,00,000, the Absorption Rate is set at ₹100/hr based strictly on the practical capacity.
- Calculate the 100% theoretical 24/7 output.
- Deduct days the factory is legally closed (weekends, holidays).
- Deduct necessary engineering downtime (oil changes, blade sharpening).
- Deduct human factors (shift changes, lunch breaks).
- Use the resulting number to spread fixed costs across products.
| Practical Capacity vs. Normal Capacity | Practical capacity is what you can make (supply). Normal capacity is what you expect to sell based on 3-5 year average market demand (demand). |
|---|
11 Piece Rate System
| Category | Labour Costing |
|---|---|
| Best Used In | Standardized, repetitive, manual work |
| Key Formula | Number of Units Produced × Rate per Unit |
| Exam Importance | Very High |
The Piece Rate System is a method of wage payment where workers are paid a fixed, predetermined amount of money for every single unit of product they manufacture, regardless of how much time it takes.
It directly links pay to physical output, acting as a massive incentive for speed. If a worker is fast, they earn more. For the employer, the Direct Labour cost per unit becomes completely fixed and predictable, shifting the risk of slow work entirely onto the employee.
- Garment manufacturing (paid per shirt sewn)
- Agricultural harvesting (paid per basket picked)
- Data entry (paid per form processed)
A brick maker is paid ₹2 per brick. Worker A is fast and makes 500 bricks in 8 hours, earning ₹1,000. Worker B is slow and makes 200 bricks in 8 hours, earning ₹400. The factory’s labour cost remains exactly ₹2 per brick in their Cost Sheet, ensuring their pricing models never fail due to human slowness.
Standard Time allowed = 10 minutes per unit. Standard Hourly Rate = ₹60/hr.
Implied Piece Rate: Since a worker should make 6 units in an hour (60 mins ÷ 10 mins), the Piece Rate is ₹60 ÷ 6 = ₹10 per unit.
If a worker makes 50 units in a day, their pay is 50 × ₹10 = ₹500.
- Establish the standard time it takes to make one unit.
- Establish the fair market hourly wage.
- Convert the hourly wage into a per-unit piece rate.
- Count the good units produced by the worker (rejects are usually unpaid).
- Multiply good units by the piece rate.
| Straight Piece Rate vs. Differential Piece Rate (Taylor) | Straight rate pays ₹10/unit no matter what. Taylor’s Differential punishes slow workers (pays ₹8/unit if you miss the daily target) and rewards fast ones (pays ₹12/unit if you beat the target). |
|---|
12 Preparation of Cost Sheet
| Category | Core Cost Accounting Format |
|---|---|
| Best Used In | Determining total cost and setting selling prices |
| Key Formula | Prime Cost + Factory OH + Admin OH + Selling OH |
| Exam Importance | Extremely High (Foundation of all exams) |
The Cost Sheet is a periodic, structured statement designed to show the detailed buildup of the total cost of a product, broken down logically into distinct functional categories (Prime, Works, Production, and Total Cost).
It is the “Income Statement” of the factory. It systematically adds layers of overhead to the raw materials until it reaches the final Cost of Sales, allowing management to see exactly where money is bleeding out of the manufacturing process.
- Calculating per-unit costs for pricing (Quotations/Tenders)
- Comparing current costs against previous periods for control
- Statutory cost audit compliance
A shoe manufacturer uses a Cost Sheet to trace the ₹500 leather (Prime Cost) up through the ₹200 factory rent (Works Cost), the ₹100 office salaries (Cost of Production), and the ₹50 advertising spend (Cost of Sales), proving the final shoe costs exactly ₹850 to put in a customer’s hands.
1. Direct Material + Direct Labour + Direct Exp = Prime Cost
2. Prime Cost + Factory Overheads = Gross Works Cost
3. Gross Works Cost + Opening WIP – Closing WIP = Net Works Cost
4. Net Works Cost + Quality Control + Admin OH (Production) = Cost of Production (COP)
5. COP + Opening FG – Closing FG = Cost of Goods Sold (COGS)
6. COGS + Selling & Distribution OH = Cost of Sales (Total Cost).
- Create two columns: “Total Cost” and “Cost Per Unit”.
- Follow the strict hierarchical ladder (Prime → Works → Production → Sales).
- Adjust for WIP inventory at the Works Cost stage.
- Adjust for Finished Goods inventory at the Cost of Production stage.
- Strictly exclude purely financial items (Donations, Income Tax, Interest).
| Cost Sheet vs. Financial P&L | Financial P&L groups expenses by nature (e.g., all salaries together). Cost Sheet groups expenses by function (Factory salaries vs. Office salaries vs. Sales salaries). |
|---|
13 Process Loss (Normal & Abnormal)
| Category | Process Costing |
|---|---|
| Best Used In | Chemicals, refining, food processing |
| Key Formula | Separating expected waste from operational failure |
| Exam Importance | Extremely High |
Process Loss refers to the physical reduction in the volume or weight of materials as they pass through a manufacturing sequence. It is split into two distinct accounting treatments: Normal Loss (Expected) and Abnormal Loss (Unexpected).
Normal Loss is the toll you pay to physics (evaporation, slag). Its cost is absorbed by the surviving good units. Abnormal Loss is the toll you pay to bad management (fire, spilling, machine faults). Its cost is separated and written off to the P&L so it doesn’t artificially inflate the price of the surviving units.
- Valuing Good Output in continuous manufacturing
- Setting standard yields for chemical reactions
- Holding shift managers accountable for careless waste
You input 100 liters of milk to make cheese. You expect 10 liters to evaporate (Normal Loss). You drop a bucket and spill 5 liters (Abnormal Loss). The 85 liters of good cheese will absorb the cost of the evaporated milk, but the accountant will force the P&L to absorb the cost of the dropped bucket.
Input: 1,000 kg. Total Cost: ₹10,000.
Normal Loss Expected = 10% (100 kg). Scrap Value = ₹0.
Expected Good Output = 900 kg. Cost per Unit = ₹10,000 ÷ 900 = ₹11.11/kg.
Actual Output = 850 kg. (Abnormal Loss = 50 kg).
Value of Good Output transferred to next process = 850 × ₹11.11 = ₹9,444.
Value of Abnormal Loss charged to P&L = 50 × ₹11.11 = ₹555.
- Calculate the Normal Loss percentage on the Input Units.
- Subtract its quantity from the denominator, and its scrap value from the numerator.
- Calculate the “Cost per Good Unit”.
- Compare Actual Output to Expected Output to find the quantity of Abnormal Loss.
- Multiply Abnormal Loss quantity by the newly calculated “Cost per Good Unit”.
| Abnormal Loss vs. Abnormal Gain | If Actual Output is HIGHER than Expected Output, you have an Abnormal Gain. It is treated exactly like Abnormal Loss, just on the debit (opposite) side of the Process Account. |
|---|
14 Primary Distribution of Overheads
| Category | Overhead Accounting |
|---|---|
| Best Used In | Departmentalizing shared factory costs |
| Key Formula | Apportioning shared costs based on logical physical drivers |
| Exam Importance | High |
Primary Distribution is the very first stage of overhead accounting. It involves gathering all factory-wide indirect expenses and apportioning them logically across ALL departments—both Production Departments and Service Departments.
Before you can charge overheads to a product, you have to know what each department costs to run. Primary distribution takes massive bills (like a ₹10 Lakh electricity bill) and slices it up between the Cutting, Assembly, Maintenance, and HR departments based on things like meter readings or floor space.
- Preparing the Overhead Distribution Summary
- Determining the total cost of operating Service Departments
- Laying the groundwork for Secondary Distribution
The company pays a single ₹50,000 bill for building security. The accountant performs Primary Distribution by splitting this ₹50,000 among 5 different departments based on the square footage each occupies, assigning ₹10,000 to the Assembly line and ₹5,000 to the Canteen.
Factory Rent: Distributed by Square Footage occupied.
Power/Electricity: Distributed by Machine Horsepower × Hours worked.
Depreciation: Distributed by the Book Value of assets in each department.
Canteen Subsidy: Distributed by the Number of Employees in each department.
- List all departments (Production: P1, P2. Service: S1, S2).
- Take an overhead expense (e.g., Insurance ₹1,00,000).
- Find the relevant base (e.g., Asset Value).
- Calculate ratios (e.g., P1 has 50% of assets, P2 has 30%, S1 has 20%).
- Distribute the ₹1,00,000 according to those exact percentages.
| Primary vs. Secondary Distribution | Primary spreads costs to EVERY department. Secondary takes the costs collected in Service Departments and mathematically empties them into the Production Departments. |
|---|
15 Pareto Analysis (80/20 Rule)
| Category | Strategic Cost Management |
|---|---|
| Best Used In | Inventory ABC control, Cost of Quality, Prioritization |
| Key Formula | 80% of Consequences stem from 20% of Causes |
| Exam Importance | High |
Pareto Analysis is a decision-making technique based on the Pareto Principle (the 80/20 rule), which states that a small number of causes (20%) generate a massive majority of the effects/costs (80%).
In cost management, time is limited. Managers cannot fix everything at once. Pareto Analysis involves plotting data to identify the “Vital Few” problems causing the most financial bleed, ignoring the “Trivial Many” until the big issues are solved.
- ABC Inventory Control (20% of items hold 80% of stock value)
- Customer Profitability (20% of clients generate 80% of profits)
- Quality Control (20% of machine faults cause 80% of the defects)
A hospital receives 1,000 patient complaints. Instead of trying to fix all 50 different types of complaints, the management accountant uses a Pareto chart. They discover that just 2 issues (Long waiting times and Cold food) account for 820 of the complaints. They focus their budget entirely on fixing those two things.
A warehouse has 10,000 SKUs.
‘A’ Items (The 20%): 2,000 SKUs represent ₹8 Crores (80%) of the total inventory value. Management mandates daily physical counting and strict CEO approval for these items.
‘C’ Items (The 80%): 8,000 SKUs (screws/washers) represent only ₹2 Crores. They are checked once a year.
- Gather data on costs, defects, or inventory values.
- Sort the data in descending order of financial magnitude.
- Calculate the cumulative percentage of the total for each item.
- Draw a line where the cumulative total hits roughly 80%.
- Direct all management time, audits, and capital toward the items above that line.
| Pareto Analysis vs. Scatter-gun Approach | A scatter-gun approach treats every problem equally (e.g., cutting 10% from every department’s budget). Pareto surgically targets the specific area doing the most damage. |
|---|
16 Penetration Pricing
| Category | Pricing Strategy |
|---|---|
| Best Used In | New product launches in highly competitive markets |
| Key Formula | Initial Price < Marginal Cost (Taking short-term loss) |
| Exam Importance | High (Strategic Cost Management) |
Penetration Pricing is a highly aggressive market-entry strategy where a company introduces a new product at an artificially low price—often below its actual cost—to rapidly capture market share, build a customer base, and drive competitors out.
It relies heavily on the Learning Curve and Economies of Scale. The company accepts massive losses in Year 1. However, the low price generates huge sales volume, which forces the factory to produce millions of units, rapidly driving down the per-unit fixed and variable costs until the product becomes highly profitable in Year 2.
- Telecom network launches (e.g., Jio offering free data initially)
- Streaming services and subscription boxes
- FMCG products entering crowded supermarket shelves
A razor company launches a new handle. It costs ₹100 to make. They sell it for ₹50 (Penetration pricing). They lose ₹50 on every handle. However, 10 million people buy it. Now, those 10 million people are locked into buying the replacement blades (which cost ₹10 to make but sell for ₹80). The initial loss secures a decade of high-margin profits.
Month 1: Cost = ₹200. Penetration Price = ₹150. (Loss ₹50). Demand skyrockets to 100k units.
Month 6: Due to massive volume, supplier gives 40% bulk discount. Workers hit the learning curve. Cost drops to ₹90.
Price is slowly raised to ₹180. The company now dominates the market with a ₹90 profit margin.
- Identify a highly elastic market (customers will switch brands instantly for a lower price).
- Set the price destructively low to steal market share.
- Use the resulting high volume to negotiate raw material discounts.
- Once customers are locked in (or competitors go bankrupt), gradually raise prices to normal levels.
| Penetration Pricing vs. Skimming Pricing | Skimming sets the price incredibly HIGH initially to milk early adopters (like a new iPhone), then drops the price later. Penetration sets it incredibly LOW initially to capture the masses, raising it later. |
|---|
17 Pricing Decisions
| Category | Decision Making |
|---|---|
| Best Used In | Setting optimal selling prices under various conditions |
| Key Formula | Varies (Cost-Plus, Target, Marginal, Skimming) |
| Exam Importance | Very High |
Pricing Decisions form the intersection of cost accounting, economics, and marketing. It involves selecting the optimal selling price for a product or service that achieves corporate objectives like profit maximization, market share growth, or simple survival.
A cost accountant doesn’t just use “Cost + 20%”. They must analyze capacity levels, competitor moves, and cost behavior. During a boom, they use Full Absorption Cost pricing. During a recession or for a special export order, they switch to Marginal Cost pricing to keep the factory running.
- Special order acceptance (Below average cost)
- Export pricing (Dumping excess capacity)
- New product launches (Skimming vs Penetration)
A factory has a total average cost of ₹100 per toy. The domestic market pays ₹150. An overseas buyer offers to buy 10,000 toys, but only wants to pay ₹90. An accountant using Marginal Costing realizes the variable cost is only ₹70. They make the Pricing Decision to accept the ₹90 export order, generating ₹20 contribution per unit to cover domestic fixed costs.
At 100% Capacity: Price must cover Full Cost + Profit + Opportunity Cost of displaced sales.
At 60% Capacity: Price only needs to cover Marginal (Variable) Cost + Any specific fixed costs triggered by the order. Any price above this generates a net benefit to the firm.
Target Price (Long term) = Full Cost + Desired ROI
- Determine current capacity utilization. If full, use Full Costing. If idle, use Marginal Costing.
- Calculate the relevant base cost (excluding sunk/committed fixed costs if analyzing a short-term order).
- Evaluate market elasticity (Will lowering the price increase total volume enough to offset the margin drop?).
- Set the price strategically.
| Cost-Based vs. Market-Based Pricing | Cost-based looks inward (What did it cost me?). Market-based looks outward (What is the customer willing to pay?) and forces the factory to meet a Target Cost to achieve that price. |
|---|
18 Point of Indifference (Cost Indifference Point)
| Category | Decision Making / CVP Analysis |
|---|---|
| Best Used In | Choosing between two machines or cost structures |
| Key Formula | Change in Fixed Costs ÷ Change in Variable Cost per Unit |
| Exam Importance | Extremely High |
The Point of Indifference is the exact level of sales volume or production output at which two different alternatives (e.g., two different machines, or making vs. buying) result in the exact same total cost or total profit.
It is used when comparing a low-fixed-cost/high-variable-cost option (Machine A) against a high-fixed-cost/low-variable-cost option (Machine B). The indifference point tells management exactly what production volume acts as the “tipping point” where Machine B mathematically becomes the better choice.
- Capital budgeting (Choosing between Manual Labour vs Automation)
- Selecting the best manufacturing process based on expected sales volume
- Designing sales commission structures (Flat salary vs High commission)
Option A (Manual): Fixed Cost ₹10,000, Variable Cost ₹50/unit.
Option B (Robot): Fixed Cost ₹50,000, Variable Cost ₹10/unit.
At exactly 1,000 units, both options cost ₹60,000. If the sales team guarantees they can sell 1,500 units (past the indifference point), the manager buys the Robot. If they can only sell 800 units, the manager uses Manual Labour.
Machine X: Fixed = ₹20,000. Var/unit = ₹15.
Machine Y: Fixed = ₹50,000. Var/unit = ₹5.
Difference in Fixed Cost: 50,000 – 20,000 = ₹30,000.
Difference in Variable Cost: 15 – 5 = ₹10/unit.
Indifference Point: 30,000 ÷ 10 = 3,000 units.
- Identify the Fixed Cost and Variable Cost per unit for both Alternative A and Alternative B.
- Calculate the absolute difference in Fixed Costs between the two.
- Calculate the absolute difference in Variable Cost per unit between the two.
- Divide the Fixed difference by the Variable difference.
- Decision Rule: If expected volume > Indifference Point, choose the option with the Highest Fixed Cost (Lowest VC).
| Indifference Point vs. Break-Even Point | BEP is where Total Revenue equals Total Cost (Profit = 0). Indifference Point is where the Total Cost of Option A equals the Total Cost of Option B, completely ignoring revenue. |
|---|
19 Prevention Costs
| Category | Cost of Quality (TQM) |
|---|---|
| Best Used In | Total Quality Management, reducing defect rates |
| Key Formula | Investment category (Part of Cost of Good Quality) |
| Exam Importance | Medium |
Prevention Costs are the proactive investments a company makes to ensure that defective products, errors, and poor quality never happen in the first place.
In the “Cost of Quality” framework, money spent here is considered “Good Quality Cost.” It is a fundamental law of manufacturing that spending ₹1 on Prevention saves ₹10 in Appraisal (inspection) and ₹100 in Failure (recalls and lost customers).
- Designing worker training programs
- Implementing Total Quality Management (TQM) systems
- Evaluating supplier quality before signing contracts
An automotive factory spends ₹20 Lakhs a year fixing cars that fail the final inspection at the end of the line (Internal Failure Cost). A management accountant suggests spending ₹5 Lakhs on advanced training for the welders and better quality steel (Prevention Cost). The defects drop to zero, saving the company ₹15 Lakhs net.
Prevention Costs include:
– Quality engineering and design reviews.
– Routine preventative maintenance on machinery.
– Employee quality training seminars.
– Supplier evaluation and auditing.
- Identify all costs related to quality in the ledger.
- Categorize activities happening before production as Prevention.
- Categorize activities happening during/after production to catch errors as Appraisal (Inspections).
- Categorize errors caught before shipping as Internal Failure (Scrap/Rework).
- Increase Prevention budgets systematically to drive Failure costs down to zero.
| Prevention vs. Appraisal Costs | Prevention aims to stop the defect from occurring entirely (e.g., Training). Appraisal aims to catch the defect before the customer sees it (e.g., Quality Control Inspectors). |
|---|
20 Profit Centre
| Category | Responsibility Accounting |
|---|---|
| Best Used In | Decentralized organizational structures |
| Key Formula | Performance = Revenue generated − Controllable Costs |
| Exam Importance | High |
A Profit Centre is a distinct segment, division, or branch of an organization whose manager is held strictly accountable for both the revenues generated and the costs incurred by that division.
Unlike a “Cost Centre” manager (who just tries to keep spending low), a Profit Centre manager acts like a mini-CEO of their own business. They have the authority to set selling prices, choose product mixes, and negotiate costs, and their bonus is based on the net profitability of their specific division.
- Evaluating branch managers in retail or banking chains
- Setting up Transfer Pricing between divisions
- Structuring executive bonuses to align with corporate goals
A massive electronics company splits its operations into the “Mobile Phone Division” and the “Television Division.” Each division is designated as a Profit Centre. The Mobile manager must ensure their phone sales revenue exceeds their specific R&D, manufacturing, and marketing costs to earn a year-end bonus.
Factory Floor (Cost Centre): Manager is evaluated purely on minimizing the ₹100 cost per unit. They cannot control sales.
Store Branch A (Profit Centre): Manager is evaluated on minimizing branch rent/staff costs AND maximizing customer sales. If Revenue is ₹5L and Controllable Costs are ₹3L, their Profit Centre performance is ₹2L.
- Identify the revenue directly generated by the division.
- Identify costs that the division manager has the power to control (Variable costs, local advertising).
- Crucial Step: Exclude allocated Head Office costs (like the CEO’s salary) that the branch manager cannot control.
- Calculate the Controllable Divisional Profit.
| Profit Centre vs. Investment Centre | A Profit Centre controls Revenue and Cost. An Investment Centre controls Revenue, Cost, AND Capital Investment (deciding whether to buy a new building), evaluated via ROI or EVA. |
|---|
