Cost Accounting · Integrated Accounting System
How to Solve Integrated Accounting Problems
Updated 10 October 2026 · Fact-checked
Integrated accounting keeps cost and financial entries in one set of books. To solve a problem, open control accounts for stores, wages, overheads, WIP, finished goods and cost of sales, post every transaction with a double entry, balance each account, then close them to the costing profit and loss account and take closing balances to the balance sheet.
Understand Preparing Ledger Accounts and Final Statements
In an integrated accounting system there is one set of books. Cost accounts and financial accounts are not kept separately. Every transaction is recorded once, and it feeds both the cost records and the financial statements. So there is no need for a separate reconciliation between cost profit and financial profit.
The ledger runs on control accounts. Material goes into the Stores Ledger Control A/c. Labour goes through the Wages Control A/c. Indirect costs collect in the Factory (Production) Overhead Control A/c and in the Administration and Selling Overhead accounts. Cost then flows forward: Stores to WIP, Wages to WIP, Overheads to WIP, WIP to Finished Goods, Finished Goods to Cost of Sales.
Two features make these problems different from a plain cost sheet. First, financial items such as creditors, debtors, bank, and sales sit in the same ledger. Second, losses and under or over absorption are not buried in cost. They are taken to the Costing Profit and Loss A/c.
The exam asks for three things: the ledger accounts, the Costing Profit and Loss A/c, and extracts of the balance sheet. Extracts usually mean stores, WIP, finished goods, debtors and creditors. Think of it as a pipe. Cost enters at the left, moves through each account, and whatever is left in an account at the end is an asset. Whatever is charged off ends up in the profit and loss account.
Key rules to remember
- Purchase of materials on credit
- Stores Ledger Control A/c Dr. ; To Creditors (or Bank) A/c
- Stores is debited at cost. Creditors are credited. Returns to suppliers reverse this entry.
- Issue of direct materials
- Work-in-Progress Control A/c Dr. ; To Stores Ledger Control A/c
- Indirect material goes to Factory Overhead Control A/c instead. Abnormal loss of material goes to Costing P&L A/c.
- Wages paid or payable
- Wages Control A/c Dr. ; To Bank (or Wages Payable) A/c
- Use the gross wages. Deductions such as PF and TDS are credited to their own liability accounts.
- Allocation of wages
- WIP Control A/c Dr. (direct) ; Factory Overhead Control A/c Dr. (indirect) ; Costing P&L A/c Dr. (abnormal idle time) ; To Wages Control A/c
- Wages Control A/c should have a nil balance after allocation.
- Overhead incurred and absorbed
- Incurred: Factory Overhead Control A/c Dr. ; To Bank etc. | Absorbed: WIP Control A/c Dr. ; To Factory Overhead Control A/c
- The balance left in Factory Overhead Control is under or over absorption. Transfer it to Costing P&L A/c.
- Completion of production
- Finished Goods Control A/c Dr. ; To WIP Control A/c
- Transfer at the cost of goods completed.
- Sale of goods
- Debtors A/c Dr. (sales value) ; To Sales A/c | Cost of Sales A/c Dr. ; To Finished Goods Control A/c (cost)
- Two entries are needed: one at selling price and one at cost.
- Closing of cost of sales and sales
- Costing P&L A/c Dr. ; To Cost of Sales A/c | Sales A/c Dr. ; To Costing P&L A/c
- Administration and selling overheads are debited to Cost of Sales A/c or directly to Costing P&L A/c, as the question's treatment requires.
- Closing balance of an inventory account
- Closing balance = Opening balance + Debits during the period − Credits during the period
- The closing balances of stores, WIP and finished goods go to the balance sheet.
How to solve Preparing Ledger Accounts and Final Statements questions
Use this order for any integrated accounting question. It keeps entries organised and makes errors easy to catch.
- 1Read the whole question and list the accounts you will need: Stores, Wages, Factory Overhead, WIP, Finished Goods, Cost of Sales, Costing P&L, plus Creditors, Debtors and Bank where needed. Note every opening balance.
- 2Write the journal entry for each transaction in rough, in the order given. Mark each figure with its account and Dr or Cr. Decide at this stage whether each item is direct, indirect or abnormal.
- 3Post the entries to the ledger accounts. Open each account with its opening balance and enter every figure on the correct side with a clear narration or the name of the opposite account.
- 4Balance the Wages Control and Factory Overhead Control accounts first. Wages should clear to nil. The overhead balance is under or over absorption, which goes to Costing P&L.
- 5Balance Stores, then WIP, then Finished Goods, in that order. Each closing balance is a carried-down figure for the balance sheet. Check that the totals of both sides agree.
- 6Prepare Cost of Sales and the Costing Profit and Loss A/c. Include sales, cost of sales, abnormal losses, under or over absorption and any other items the question states. The balancing figure is profit or loss.
- 7Write the balance sheet extracts or the final answer asked for: closing stores, WIP, finished goods, debtors, creditors and so on. Check that your profit agrees with a quick recomputation.
Quickest way: Account-by-account flow check
When to use it: Use this when time is short and the question has many transactions. It suits the 14-mark ledger questions where you must prepare four to six accounts.
- Draw the accounts in a row in flow order: Stores, Wages, Overhead, WIP, Finished Goods, Cost of Sales, Costing P&L. Leave space on both sides.
- Write each transaction figure once as a pair, for example 'Stores 5,00,000 to WIP'. Enter it on the debit of one account and the credit of the other before moving on. Tick the transaction off in the question.
- Fill the wages account first, then overhead. Every credit you enter in these two accounts becomes a debit somewhere else.
- Take the closing figure of one account as the opening input for the next. Do not recompute it.
- Do a cross-check at the end: total of all opening inventories plus costs added, less cost charged to Costing P&L, should equal total closing inventories.
Common mistakes in Preparing Ledger Accounts and Final Statements
Treating indirect material or indirect wages as direct and debiting them to WIP
Students see 'materials issued' and 'wages paid' and send everything to WIP without reading the nature of the item.
Fix: Split every issue and every wage figure into direct, indirect and abnormal. Direct goes to WIP, indirect to Factory Overhead Control, abnormal to Costing P&L.
Leaving under or over absorbed overhead in the Factory Overhead Control A/c
The account looks balanced after absorption is posted, so the leftover balance is ignored.
Fix: Always balance the Factory Overhead Control A/c. Debit balance means under absorption and goes to the debit of Costing P&L. Credit balance means over absorption and goes to the credit.
Taking abnormal loss or abnormal idle time into WIP cost
Students treat all losses as part of production cost.
Fix: Normal losses stay in cost. Abnormal losses and abnormal idle time are written off to the Costing P&L A/c.
Recording sales only at selling price and forgetting the entry at cost
The sales entry feels complete, so the movement of goods out of Finished Goods is missed.
Fix: Make two entries on every sale: Debtors to Sales at selling price, and Cost of Sales to Finished Goods Control at cost.
Not carrying down closing balances correctly into the balance sheet extract
Students rush to the profit figure and forget that the unbalanced inventory accounts are the balance sheet items.
Fix: After balancing each inventory account, write the closing balance in a separate list. Then copy that list to the extract, with debtors and creditors from their accounts.
Including financial-only items such as interest paid or income-tax in cost accounts
Because the books are integrated, students assume every expense in the question belongs in cost.
Fix: Follow the question. Items of a purely financial nature go straight to the financial profit and loss account or the relevant ledger account, not through cost control accounts, unless the question says otherwise.
Worked examples
Example 1
A manufacturer follows an integrated accounting system. Opening balances on 1 April: Stores ₹2,00,000; Work-in-Progress ₹1,50,000; Finished Goods ₹1,00,000. Transactions for the month: (a) Materials purchased on credit ₹6,00,000. (b) Materials issued: to production ₹5,00,000; for factory repairs ₹40,000. (c) Gross wages paid in cash ₹3,00,000, of which direct ₹2,40,000 and indirect ₹60,000. (d) Other factory overheads paid ₹1,20,000. (e) Factory overheads absorbed into production ₹2,00,000. (f) Administration overheads paid ₹90,000 and selling overheads paid ₹50,000. (g) Cost of goods completed and transferred to finished goods ₹9,00,000. (h) Goods sold on credit for ₹14,00,000; their cost was ₹8,80,000. Prepare the Stores, Wages, Factory Overhead, WIP, Finished Goods, Cost of Sales and Costing Profit and Loss accounts, and show the balance sheet extracts for inventories, debtors and creditors. Assume no other opening balances.
Show the solution
- Stores Ledger Control A/c. Debit: Opening ₹2,00,000 + Creditors ₹6,00,000 = ₹8,00,000. Credit: WIP ₹5,00,000 + Factory Overhead Control ₹40,000 = ₹5,40,000. Closing balance c/d = ₹8,00,000 − ₹5,40,000 = ₹2,60,000.
- Wages Control A/c. Debit: Bank ₹3,00,000. Credit: WIP ₹2,40,000 + Factory Overhead Control ₹60,000 = ₹3,00,000. The account balances to nil.
- Factory Overhead Control A/c. Debit: Stores ₹40,000 + Wages ₹60,000 + Bank ₹1,20,000 = ₹2,20,000. Credit: WIP (absorbed) ₹2,00,000. Balance ₹20,000 on the debit side is under-absorbed overhead, transferred to Costing P&L A/c.
- WIP Control A/c. Debit: Opening ₹1,50,000 + Stores ₹5,00,000 + Wages ₹2,40,000 + Factory Overhead ₹2,00,000 = ₹10,90,000. Credit: Finished Goods ₹9,00,000. Closing balance c/d = ₹10,90,000 − ₹9,00,000 = ₹1,90,000.
- Finished Goods Control A/c. Debit: Opening ₹1,00,000 + WIP ₹9,00,000 = ₹10,00,000. Credit: Cost of Sales ₹8,80,000. Closing balance c/d = ₹1,20,000.
- Cost of Sales A/c. Debit: Finished Goods ₹8,80,000 + Administration overheads ₹90,000 (credit Bank) + Selling overheads ₹50,000 (credit Bank) = ₹10,20,000. Credit: Costing P&L A/c ₹10,20,000.
- Bank A/c. Credit side: Wages Control ₹3,00,000 + Factory Overhead Control ₹1,20,000 + Administration overheads ₹90,000 + Selling overheads ₹50,000 = ₹5,60,000. There is no opening balance and no receipt is given, so Bank shows a credit balance (overdraft) of ₹5,60,000. With this, every entry above has both a debit and a credit and the double entry is complete.
- Costing Profit and Loss A/c. Debit: Cost of Sales ₹10,20,000 + Under-absorbed overhead ₹20,000 = ₹10,40,000, plus profit as balancing figure. Credit: Sales ₹14,00,000. Profit = ₹14,00,000 − ₹10,40,000 = ₹3,60,000.
- Balance sheet extracts. Inventories: Stores ₹2,60,000 + WIP ₹1,90,000 + Finished Goods ₹1,20,000 = ₹5,70,000. Debtors ₹14,00,000 (no receipts are given). Creditors ₹6,00,000 (no payments are given). Bank overdraft ₹5,60,000.
Answer: Costing profit = ₹3,60,000. Closing balances: Stores ₹2,60,000; WIP ₹1,90,000; Finished Goods ₹1,20,000; total inventories ₹5,70,000. Debtors ₹14,00,000; Creditors ₹6,00,000; Bank (credit balance) ₹5,60,000. Under-absorbed factory overhead of ₹20,000 is charged to Costing P&L.
Example 2
A company uses integrated accounts. There are no opening balances. During the period: (a) Materials purchased on credit ₹4,00,000; materials worth ₹20,000 returned to suppliers. (b) Materials issued to production ₹3,10,000; materials worth ₹10,000 returned from production to stores. (c) A stock shortage of ₹8,000, regarded as abnormal, was found in stores. (d) Gross wages paid ₹2,00,000: direct ₹1,50,000, indirect ₹30,000, abnormal idle time ₹20,000. (e) Other factory overheads paid ₹1,00,000. (f) Factory overhead is absorbed at 80% of direct wages. (g) Closing WIP is ₹60,000; the rest of production is completed. (h) All finished goods were sold on credit for ₹8,00,000. (i) Administration overheads paid ₹40,000, to be charged to cost of sales. Prepare the Stores, Wages, Factory Overhead, WIP and Costing Profit and Loss accounts and find the closing stores.
Show the solution
- Stores Ledger Control A/c. The return from production is entered as a debit in Stores (Dr. Stores, Cr. WIP). Debit: Creditors ₹4,00,000 + WIP (return of materials) ₹10,000 = ₹4,10,000. Credit: Creditors (returns to suppliers) ₹20,000 + WIP (issue) ₹3,10,000 + Costing P&L (abnormal shortage) ₹8,000 = ₹3,38,000. Closing stores c/d = ₹4,10,000 − ₹3,38,000 = ₹72,000.
- Wages Control A/c. Debit: Bank ₹2,00,000. Credit: WIP ₹1,50,000 + Factory Overhead Control ₹30,000 + Costing P&L (abnormal idle time) ₹20,000 = ₹2,00,000. The balance is nil.
- Factory Overhead absorbed = 80% × ₹1,50,000 = ₹1,20,000.
- Factory Overhead Control A/c. Debit: Wages ₹30,000 + Bank ₹1,00,000 = ₹1,30,000. Credit: WIP (absorbed) ₹1,20,000. Balance ₹10,000 on the debit side is under-absorbed overhead, taken to Costing P&L.
- WIP Control A/c. Materials issued from Stores are debited to WIP at ₹3,10,000, and the return of ₹10,000 to Stores is credited to WIP, so the same entry appears in both accounts. Debit: Stores ₹3,10,000 + Wages ₹1,50,000 + Factory Overhead ₹1,20,000 = ₹5,80,000. Credit: Stores (return) ₹10,000. Net cost = ₹5,70,000. Closing WIP ₹60,000. Transferred to Finished Goods ₹5,10,000.
- All finished goods were sold, so Cost of Sales = ₹5,10,000 + Administration overheads ₹40,000 = ₹5,50,000.
- Costing P&L A/c. Debit: Cost of Sales ₹5,50,000 + Abnormal material loss ₹8,000 + Abnormal idle time ₹20,000 + Under-absorbed overhead ₹10,000 = ₹5,88,000. Credit: Sales ₹8,00,000. Profit = ₹8,00,000 − ₹5,88,000 = ₹2,12,000.
Answer: Closing stores = ₹72,000. Closing WIP = ₹60,000. Cost of goods completed = ₹5,10,000. Costing profit = ₹2,12,000, after charging abnormal material loss ₹8,000, abnormal idle time ₹20,000 and under-absorbed overhead ₹10,000.
Exam tips
- Always write the opening and closing balances of Stores, WIP and Finished Goods in your answer. Step marks are given for each correct account even if the final profit is wrong.
- Read each item for its nature: direct, indirect, normal or abnormal. Most lost marks in these questions come from sending a figure to the wrong account.
- Show the opposite account in every entry, such as 'By Stores' or 'To Wages Control'. A ledger account without particulars is hard to mark.
- For MCQs, expect one-line questions such as which account is debited when direct materials are issued, or where under-absorbed overhead is taken. Learn the flow of Dr and Cr for each standard transaction.
- Check totals on both sides of each account before moving to the next. A single arithmetic slip early in the chain spoils every later account.
Practice questions from Integrated Accounting System
- In an integrated accounting system, where cost and financial accounts are maintained in a single set of books, which account is debited when…
- In an integrated system, factory overheads incurred were Rs 1,84,000 and overheads absorbed in production were Rs 1,92,000. What is the trea…
- Under an integrated accounting system, when finished goods are transferred from the factory at the end of production, which entry is passed?
- Aarav Industries completed jobs whose total cost was Rs 6,40,000 and transferred them to the finished goods store. Of these, goods costing R…
- In integrated accounts, which account is debited when finished goods are sold on credit at a selling price above cost?
Preparing Ledger Accounts and Final Statements in other exams
The same ground in other exams, if you are preparing for more than one or want another angle on it.
Preparing Ledger Accounts and Final Statements: frequently asked questions
What is the difference between integrated accounts and the cost control account method?
In integrated accounts there is one set of books for both cost and financial records, so no reconciliation is needed. In the cost control account method, a separate cost ledger is kept with a Cost Ledger Control A/c and a reconciliation is needed. Always check which system the question names.
Which ledger accounts must I prepare in an integrated accounting question?
Prepare the accounts the question asks for. Typically these are Stores Ledger Control, Wages Control, Factory Overhead Control, Work-in-Progress Control, Finished Goods Control, Cost of Sales and the Costing Profit and Loss A/c. Prepare debtors, creditors and bank only if they are asked for or needed to find a figure.
Where do I show under-absorbed or over-absorbed overheads?
Balance the Factory Overhead Control A/c after posting overheads incurred and absorbed. A debit balance is under-absorption and is transferred to the debit of Costing P&L A/c. A credit balance is over-absorption and is transferred to the credit.
How are abnormal losses treated in integrated accounts?
Abnormal losses of material and abnormal idle time are not part of product cost. They are credited to the account where they arose, such as Stores or Wages Control, and debited to the Costing P&L A/c.