Cost Sheet and Cost Accounting Systems — Practice

Question 1

From the following, prepare a cost sheet showing Prime Cost, Works Cost, Cost of Production, Cost of Goods Sold, Cost of Sales and Profit: Opening raw material Rs.40,000, purchases Rs.3,20,000, closing raw material Rs.50,000; direct labour Rs.1,80,000; direct expenses Rs.20,000; factory overheads Rs.90,000; opening WIP Rs.30,000, closing WIP Rs.45,000; administration overheads (production-related) Rs.60,000; opening finished goods Rs.70,000, closing finished goods Rs.55,000; selling and distribution overheads Rs.85,000; sales Rs.8,50,000.

Accepted Answer

Direct Material Consumed is opening stock plus purchases less closing stock: 40,000 plus 3,20,000 less 50,000, giving 3,10,000. Prime Cost is Direct Material Consumed plus Direct Labour plus Direct Expenses: 3,10,000 plus 1,80,000 plus 20,000, giving 5,10,000. Works Cost is Prime Cost plus Factory Overheads, adjusted for opening and closing WIP: 5,10,000 plus 90,000 plus opening WIP of 30,000 less closing WIP of 45,000, that is 6,00,000 plus 30,000 less 45,000, giving 5,85,000. Cost of Production is Works Cost plus Administration Overheads relating to production: 5,85,000 plus 60,000, giving 6,45,000. Cost of Goods Sold is Cost of Production adjusted for finished goods stock: 6,45,000 plus opening finished goods of 70,000 less closing finished goods of 55,000, giving 6,60,000. Cost of Sales is Cost of Goods Sold plus Selling and Distribution Overheads: 6,60,000 plus 85,000, giving 7,45,000. Profit is Sales less Cost of Sales: 8,50,000 less 7,45,000, giving 1,05,000. Note the two stock adjustments occur at different stages: WIP is adjusted at the Works Cost stage, before administration overhead is added, since work-in-progress has not yet incurred production-administration cost; finished goods stock is adjusted after Cost of Production, before selling and distribution overhead is added, since finished goods have completed the factory and administration stages but have not yet been sold.

Question 2

A candidate builds a cost sheet by adjusting closing and opening finished goods stock immediately after Works Cost, before adding administration overhead, and separately adjusts WIP after Cost of Production. Identify both errors and explain why each stage adjustment must occur where it does.

Accepted Answer

Both adjustments have been placed at the wrong stage, and the underlying error in each case is the same kind of mistake: attributing a stock adjustment to a point in the cost sheet before that stock has actually incurred the costs that stage represents. Finished goods stock should be adjusted after Cost of Production, not immediately after Works Cost, because finished goods are, by definition, goods that have already completed the entire production process including administration overhead relating to production; adjusting for finished goods stock before administration overhead has even been added would mean the finished goods figure used in the adjustment does not yet reflect the full cost of production those goods actually carry, producing an internally inconsistent cost sheet even if every individual overhead figure were correct. WIP should be adjusted at the Works Cost stage, immediately after factory overhead and before administration overhead is added, not after Cost of Production as the candidate has done, because work-in-progress is, by definition, only partly through the factory process and has not yet incurred the further administration overhead that Cost of Production includes; adjusting WIP after administration overhead has already been added would incorrectly attribute administration cost to units that have not yet reached the stage where that cost would properly apply to them. The general principle governing both is that a stock adjustment belongs at the stage representing exactly how far that stock has progressed through the cost sheet's build-up of cost, no further and no less.

Question 3

State which of the following belong in a cost sheet and which do not, giving reasons: (a) factory power cost; (b) income tax paid; (c) donation to a charitable trust; (d) carriage inwards on raw material purchases; (e) interest paid on debentures.

Accepted Answer

Item (a), factory power cost, belongs in the cost sheet as a factory overhead, since it is genuinely incurred in the ordinary course of running the production process and is a cost of production in the ordinary trading sense. Item (b), income tax paid, does not belong in the cost sheet at all; it is an appropriation of profit to the state rather than a cost of producing, administering, selling or distributing goods, and has no place in a document built to track the operating cost of the business's trading activity. Item (c), donation to a charitable trust, likewise does not belong in the cost sheet, being a discretionary application of profit unconnected to any operating activity, similar in character to income tax in that it is excluded not because it is unimportant to the business but because it is not a cost of the trading operation the cost sheet exists to analyse. Item (d), carriage inwards on raw material purchases, belongs in the cost sheet, specifically as part of the computation of Direct Material Consumed, since freight or carriage incurred to bring raw material to the factory is a genuine cost of acquiring that material and forms part of its cost. Item (e), interest paid on debentures, does not belong in the ordinary cost sheet computation of Cost of Sales and Profit; it is a financing cost, relating to how the business is funded rather than to the cost of its operating activity, and stands outside the trading cost sheet framework, though it may be shown separately in some formats as a distinct financing item depending on what a specific question requires.

Question 4

Explain the difference between integrated and non-integrated cost accounting systems, and the trade-off between them that a company choosing between the two must weigh.

Accepted Answer

In a non-integrated accounting system, cost accounts are maintained separately from financial accounts, typically using a Cost Ledger Control Account or a similar device to keep the cost books self-balancing without needing to record every financial transaction that has no cost-accounting relevance, such as share capital movements or the funding side of a fixed asset purchase. In an integrated, or integral, accounting system, cost and financial accounts are combined into a single set of books, with one ledger serving both purposes, so that there is only ever one profit figure computed rather than two separate figures that might diverge. The trade-off between the two is the central point worth understanding for a definitional question in this area. A non-integrated system is comparatively simple to design initially, since cost accounts can be built purely for internal management purposes, using notional charges and internal valuation conventions where useful for decision-making, without needing to satisfy every external financial reporting convention simultaneously; the cost, however, is the ongoing burden of periodically reconciling the separately computed cost profit against the financial profit, since the two figures will almost always diverge for the recurring reasons this chapter catalogues. An integrated system demands a more careful and more demanding design effort upfront, since the single chart of accounts must be built to serve both external reporting requirements and internal cost-control requirements at once, but it eliminates the ongoing reconciliation exercise entirely, giving management a single, internally consistent profit figure available at any time without further adjustment. The choice between the two is therefore a choice between upfront design complexity and ongoing reconciliation effort, and larger organisations with the resources to design an integrated chart of accounts properly often prefer it precisely to eliminate the recurring reconciliation task.

Question 5

List the recurring categories of difference between profit as per cost accounts and profit as per financial accounts, with one example of each, and explain why notional charges appear only in the cost accounts.

Accepted Answer

Four recurring categories of difference are generally examined. First, items included in financial accounts but having no place in cost accounts, such as purely financial income like interest received or dividend received, and purely financial expenses like interest paid, loss on sale of a fixed asset, donations, or income tax, none of which is a cost or revenue of the ordinary operating activity the cost accounts are built to track. Second, items included in cost accounts but not, or not at the same figure, in financial accounts, principally notional charges such as notional rent on premises the company owns rather than rents, and notional interest on capital employed, both charged in cost accounts to reflect the true opportunity cost of resources used even though no actual cash payment corresponds to them, and so neither has any entry in the financial accounts at all. Third, differing valuation of stock, where cost accounts may value closing work-in-progress or finished stock under the costing system's own rules in a way that differs from how financial accounts value the same stock, producing a divergence in reported profit purely from this valuation difference rather than from any underlying transaction difference. Fourth, differing depreciation methods or rates used for costing purposes as against financial reporting purposes, and the treatment of abnormal items, which might be excluded from cost accounts and dealt with separately while remaining part of ordinary financial profit and loss, or vice versa. Notional charges appear only in the cost accounts because their entire purpose is internal, decision-relevant costing: charging notional rent lets management see the true, full opportunity cost of using owned premises for this activity rather than some other use or a sale, which is directly useful information for internal decisions, whereas the financial accounts are governed by the requirement to record only actual transactions that have genuinely occurred, and no cash rent has actually been paid for the company to record.

Question 6

Profit as per cost accounts is Rs.4,20,000. The following differences are identified: notional rent charged in cost accounts but not in financial accounts, Rs.60,000; interest received, credited in financial accounts only, Rs.25,000; closing stock valued Rs.18,000 higher in cost accounts than in financial accounts; income tax provided in financial accounts only, Rs.90,000. Prepare a reconciliation statement to arrive at profit as per financial accounts.

Accepted Answer

Start with profit as per cost accounts of 4,20,000, and adjust for each difference according to its effect on financial profit relative to cost profit. Notional rent of 60,000 was charged as an expense in cost accounts but is not an actual expense in financial accounts at all, so financial profit is higher than cost profit by this amount to the extent this charge reduced cost profit without a corresponding reduction in financial profit; add back 60,000. Interest received of 25,000 was credited as income in financial accounts but was never included in cost accounts at all, so financial profit is higher than cost profit by this amount; add 25,000. Closing stock valued 18,000 higher in cost accounts than in financial accounts means cost of goods sold in cost accounts is correspondingly lower, and cost profit correspondingly higher, than it would be under the financial accounts' lower stock valuation; to move from cost profit towards financial profit, this overstatement in cost accounts relative to financial accounts must be deducted, so deduct 18,000. Income tax of 90,000 was provided for in financial accounts only, reducing financial profit, with no corresponding charge in cost accounts, so financial profit is lower than cost profit by this amount; deduct 90,000. Profit as per financial accounts is therefore 4,20,000 plus 60,000 plus 25,000 less 18,000 less 90,000, that is 4,05,000 minus 18,000, giving 3,97,000. The discipline worth extracting is to ask, for every item, whether financial profit is higher or lower than cost profit because of it, and to add or deduct accordingly when starting from cost profit and working towards financial profit.

Question 7

Opening raw material stock is Rs.60,000, purchases during the period are Rs.4,80,000, carriage inwards on those purchases is Rs.15,000, purchase returns are Rs.20,000, and closing raw material stock is Rs.75,000. Compute Direct Material Consumed, showing each adjustment.

Accepted Answer

Direct Material Consumed is built up from opening stock, adding all costs of bringing material in, and removing what was returned and what remains unused at the period end. Start with opening stock of 60,000. Add purchases of 4,80,000, giving a running total of 5,40,000. Add carriage inwards of 15,000, since freight incurred to bring the material to the factory is a genuine cost of acquiring it and is included in the computation, giving a running total of 5,55,000. Deduct purchase returns of 20,000, since returned material was never actually retained or consumed and should not be counted as part of what was available for use, giving a running total of 5,35,000. Finally deduct closing stock of 75,000, representing material purchased but not yet consumed by the period end and therefore not part of this period's consumption, giving Direct Material Consumed of 5,35,000 less 75,000, that is 4,60,000. This figure of 4,60,000, and not the raw purchases figure of 4,80,000, is what correctly enters the Prime Cost computation, since Prime Cost should reflect what was actually consumed in production during the period, not merely what was bought, and the distinction between purchases and consumption is exactly what this opening-plus-purchases-less-closing computation, adjusted for carriage and returns, is designed to capture.

Question 8

From the following, compute Works Cost and Cost of Goods Sold: Prime Cost Rs.7,20,000; Factory Overheads Rs.1,80,000; Opening WIP Rs.40,000; Closing WIP Rs.65,000; Administration Overheads (production-related) Rs.90,000; Opening Finished Goods Rs.1,10,000; Closing Finished Goods Rs.95,000.

Accepted Answer

Works Cost is Prime Cost plus Factory Overheads, adjusted for the change in Work-in-Progress: 7,20,000 plus 1,80,000, giving 9,00,000, plus Opening WIP of 40,000, less Closing WIP of 65,000, that is 9,00,000 plus 40,000 less 65,000, giving 8,75,000. The WIP adjustment is applied at this stage, before Administration Overhead is added, because work-in-progress has not yet incurred production-administration cost and belongs, by definition, to the factory stage of the cost build-up rather than beyond it. Cost of Production is Works Cost plus Administration Overheads relating to production: 8,75,000 plus 90,000, giving 9,65,000. Cost of Goods Sold is Cost of Production, adjusted for the change in finished goods stock: 9,65,000 plus Opening Finished Goods of 1,10,000, less Closing Finished Goods of 95,000, that is 9,65,000 plus 1,10,000 less 95,000, giving 9,80,000. The finished goods adjustment is applied at this later stage, after Cost of Production and before any Selling and Distribution Overhead would be added, because finished goods have already completed the full production and administration process and carry the full Cost of Production, but have not yet incurred selling and distribution cost, precisely mirroring the logic that placed the WIP adjustment at the earlier Works Cost stage.

Question 9

A company operates from a factory it owns outright, with no rent actually paid. For internal costing purposes, it charges notional rent of Rs.2,00,000 per year, reflecting what the space would fetch if leased out. Explain why this charge appears in the cost accounts but not in the financial accounts, and what decision it helps management make correctly.

Accepted Answer

Notional rent appears in the cost accounts because cost accounts are built for internal decision-making purposes, and a decision-relevant view of the company's true costs must reflect the genuine economic cost of using the factory space, which is the opportunity cost of not putting that space to its next best alternative use, here the rental income the company forgoes by occupying rather than leasing out the premises. Financial accounts, by contrast, are governed by the requirement to record only actual transactions that have genuinely taken place, and since no cash rent has actually been paid, financial accounting has no basis on which to record any rent expense at all for owned premises; recording a notional charge in financial accounts would misstate the company's actual, historical financial position and would not be permitted under the accounting standards governing external reporting. The notional rent charge helps management make a genuinely important decision correctly: without it, the cost of operating from the owned factory would appear artificially low relative to a genuinely equivalent leased facility, since the leased facility's cost would include actual rent while the owned facility's cost figure, absent the notional charge, would not reflect the real economic cost of the space at all. This could lead management to systematically undervalue the true cost of continuing to occupy the owned premises, and by extension to misjudge decisions such as whether the space might be more valuably used for a different product line, or whether selling or leasing out the property and relocating operations elsewhere might actually be more profitable than continuing to occupy it without cost apparently attached.

Question 10

A company uses the straight-line method for depreciation in its cost accounts but the written-down-value method for financial accounts, producing a difference of Rs.25,000 in the current year's depreciation charge (cost accounts figure higher). Separately, cost accounts value closing WIP at prime cost only, while financial accounts value it at prime cost plus a share of overhead, producing a Rs.18,000 higher WIP valuation in financial accounts. If cost profit is Rs.6,50,000, compute financial profit after adjusting for both differences.

Accepted Answer

Both differences must be assessed for their effect on financial profit relative to cost profit, and the two differences point in opposite directions here. On depreciation, cost accounts have charged 25,000 more depreciation than financial accounts, meaning cost profit has been reduced by that additional 25,000 relative to what financial profit reflects; to move from cost profit towards financial profit, this excess charge in cost accounts must be added back, since financial profit did not bear the same reduction. On stock valuation, financial accounts value closing WIP 18,000 higher than cost accounts do, meaning financial accounts' cost of goods sold is correspondingly 18,000 lower and financial profit correspondingly 18,000 higher than cost profit purely because of this valuation difference; to move from cost profit towards financial profit, this amount must also be added, since financial profit already reflects a lower cost of goods sold, and therefore higher profit, on account of the higher stock valuation. Financial profit is therefore cost profit of 6,50,000 plus 25,000 for the depreciation difference plus 18,000 for the stock valuation difference, giving 6,93,000. The discipline applied throughout is the same one recommended for any reconciliation: for each item, ask specifically whether financial profit is higher or lower than cost profit because of it, and add or deduct accordingly, rather than attempting to memorise a fixed list of standard additions and deductions that may not correctly capture the direction of a particular difference in a specific problem.

Question 11

Direct material consumed is Rs.2,00,000, direct labour is Rs.1,20,000, direct expenses are Rs.10,000, factory overheads are Rs.66,000, administration overheads (production) are Rs.40,000, selling and distribution overheads are Rs.54,000, and sales are Rs.5,50,000. There is no opening or closing WIP or finished goods. Compute Prime Cost, Works Cost, Cost of Production, Cost of Sales and Profit.

Accepted Answer

Prime Cost is Direct Material Consumed plus Direct Labour plus Direct Expenses: 2,00,000 plus 1,20,000 plus 10,000, giving 3,30,000. Works Cost is Prime Cost plus Factory Overheads, with no WIP adjustment needed since there is neither opening nor closing WIP: 3,30,000 plus 66,000, giving 3,96,000. Cost of Production is Works Cost plus Administration Overheads relating to production: 3,96,000 plus 40,000, giving 4,36,000. Cost of Goods Sold equals Cost of Production, with no finished goods adjustment needed since there is neither opening nor closing finished goods stock: 4,36,000. Cost of Sales is Cost of Goods Sold plus Selling and Distribution Overheads: 4,36,000 plus 54,000, giving 4,90,000. Profit is Sales less Cost of Sales: 5,50,000 less 4,90,000, giving 60,000. This simplified example, with no stock adjustments required at either the WIP or finished goods stage, isolates the underlying five-stage structure of the cost sheet clearly, since every figure flows directly from the one before it without the additional complication of adding and subtracting opening and closing stock, making it a useful check that the basic sequence and additions are understood correctly before tackling a fuller problem involving both stock adjustments.

Question 12

A company's trial balance includes: factory insurance, profit on sale of an old delivery van, provision for doubtful debts, and carriage outwards on goods delivered to customers. State which belong in the cost sheet and where, and which do not.

Accepted Answer

Factory insurance belongs in the cost sheet as a factory overhead, forming part of Works Cost, since it is a genuine cost of protecting the production facility and its assets and is incurred in the ordinary course of running the factory. Profit on sale of an old delivery van does not belong in the cost sheet at all; it is a capital gain arising from disposing of a fixed asset, unconnected to the ordinary trading cost of producing, administering, selling or distributing goods, and including it would conflate a one-off capital transaction with the recurring operating costs and revenues the cost sheet is built to analyse. Provision for doubtful debts does not belong in the cost sheet either; it is a financial accounting adjustment relating to the collectability of receivables, a matter of credit risk management rather than a cost of the trading operation itself, and is excluded on the same basis as other purely financial items such as interest paid or income tax. Carriage outwards on goods delivered to customers does belong in the cost sheet, but as a selling and distribution overhead rather than a factory cost, entering the computation at the Cost of Sales stage; unlike carriage inwards, which is a cost of acquiring material and enters Direct Material Consumed, carriage outwards is a cost of getting the finished product to the customer after it has already been produced, and belongs firmly in the selling and distribution category rather than anywhere earlier in the cost sheet.

Question 13

Profit as per financial accounts is Rs.3,80,000. Interest received of Rs.15,000 was credited in financial accounts only. Notional interest on capital of Rs.22,000 was charged in cost accounts only. Closing stock is valued Rs.9,000 lower in cost accounts than in financial accounts. Compute profit as per cost accounts, working in this direction.

Accepted Answer

Working from financial profit towards cost profit reverses the direction of every adjustment relative to working the other way, so each item's effect must be reassessed carefully rather than mechanically reusing a memorised add/deduct pattern from a cost-to-financial computation. Interest received of 15,000, credited in financial accounts only, means financial profit is higher than cost profit by this amount; moving from financial profit towards cost profit, this must be deducted, since cost profit never included it. Notional interest on capital of 22,000, charged in cost accounts only, means cost profit is lower than financial profit by this amount, since this charge reduced cost profit with no corresponding reduction in financial profit; moving from financial profit towards cost profit, this notional charge must also be deducted, since cost profit needs to be shown as lower to reflect that it bore this charge financial profit did not. Closing stock valued 9,000 lower in cost accounts than in financial accounts means cost accounts' cost of goods sold is correspondingly higher, and cost profit correspondingly lower, than financial profit by this amount; moving from financial profit towards cost profit, this too must be deducted. Profit as per cost accounts is therefore 3,80,000 less 15,000 less 22,000 less 9,000, that is 3,80,000 less 46,000, giving 3,34,000. Every one of the three adjustments happened to be a deduction in this particular direction, which is a coincidence of these specific figures rather than a general rule; the discipline of asking, for each item, which profit figure is higher because of it, and adjusting accordingly given the direction of travel, is what produces the correct answer regardless of which direction a specific reconciliation happens to require.

Question 14

A growing manufacturing company currently runs separate cost and financial ledgers, reconciled monthly, and is considering moving to an integrated system as part of a new ERP implementation. Advise on the factors relevant to this decision.

Accepted Answer

The company should weigh the upfront design effort of building a single chart of accounts capable of serving both external financial reporting requirements and internal cost-control requirements simultaneously against the ongoing cost of the monthly reconciliation exercise it currently performs under its non-integrated system. As the company grows, the monthly reconciliation burden is likely to grow with it, since more transactions, more cost centres, and more categories of divergence between cost and financial treatment, such as notional charges, differing stock valuation conventions, and differing depreciation policies, all tend to accumulate in a larger, more complex organisation, making the recurring reconciliation increasingly time-consuming and increasingly prone to error the longer it is deferred. An ERP implementation is a natural point to consider integration specifically because building the necessary single chart of accounts is largely unavoidable overhead of the implementation project in any event, meaning the marginal additional design effort to make it serve cost accounting purposes as well as financial reporting purposes may be considerably smaller than it would be as a standalone initiative undertaken separately from any broader systems project. Against this, the company should consider whether its cost accounting needs, such as detailed activity-based costing or highly granular internal reporting not required for external purposes, might be more naturally and flexibly served by a separate, purpose-built cost system than by forcing all of that detail into the same ledger structure that must also satisfy statutory financial reporting formats and requirements, since an integrated system's single-ledger discipline can sometimes constrain the flexibility available to a dedicated cost accounting system.

Question 15

Prime Cost is Rs.5,00,000, Factory Overheads Rs.1,40,000, Opening WIP Rs.30,000, Closing WIP Rs.55,000, Administration Overheads (production) Rs.60,000, Opening Finished Goods Rs.80,000, Closing Finished Goods Rs.1,05,000, Selling and Distribution Overheads Rs.90,000, Sales Rs.9,20,000. A candidate deducts the finished goods change at the Works Cost stage and the WIP change after Cost of Production. Identify the errors, restate correctly, and compute Profit.

Accepted Answer

The candidate has swapped the two stock adjustments to the wrong stages, exactly the error this chapter warns is the most common mistake in building a cost sheet. WIP must be adjusted at the Works Cost stage, before Administration Overhead, since WIP has not yet incurred that cost; finished goods must be adjusted after Cost of Production, before Selling and Distribution Overhead, since finished goods have completed production and administration but not yet been sold. Restating correctly: Works Cost is Prime Cost plus Factory Overheads, adjusted for WIP: 5,00,000 plus 1,40,000, giving 6,40,000, plus Opening WIP of 30,000, less Closing WIP of 55,000, giving 6,15,000. Cost of Production is Works Cost plus Administration Overheads: 6,15,000 plus 60,000, giving 6,75,000. Cost of Goods Sold is Cost of Production, adjusted for finished goods: 6,75,000 plus Opening Finished Goods of 80,000, less Closing Finished Goods of 1,05,000, giving 6,50,000. Cost of Sales is Cost of Goods Sold plus Selling and Distribution Overheads: 6,50,000 plus 90,000, giving 7,40,000. Profit is Sales less Cost of Sales: 9,20,000 less 7,40,000, giving 1,80,000. Had the candidate's incorrect stage placement been carried through, the finished goods change of a net 25,000 increase would have wrongly reduced Works Cost before Administration Overhead was even added, and the WIP change of a net 25,000 increase would have wrongly been applied after Cost of Production instead, producing an internally inconsistent cost sheet even though the final Cost of Sales figure might, depending on the specific numbers, coincidentally still total correctly in some cases; the stage-placement error is a presentation and reasoning failure that examiners specifically watch for regardless of whether the final total happens to survive it.

Practice — Cost Sheet and Cost Accounting Systems

Sign in to save attempts to your dashboard and track your accuracy over time

Find a verified tutor

Join a live course

Browse coaching centres

About

Categories

Support

Documentation

Get Study Tips & Updates

Download Our App

Download for iOS

Download for Android

Popular Cities