Kerala HSE (SCERT) · Class 11 · Accountancy (with AFS)
Unit 1 · Chapter 2 · Introduction to Accounting

Theory Base of Accounting

Every number on a balance sheet rests on a set of agreed rules — accounting concepts and conventions — and this chapter teaches you exactly what those rules are, why they exist, and how they keep financial statements honest.

Board exam questions regularly ask you to identify which accounting concept or convention applies to a given situation, and understanding the Theory Base also sets the foundation for every advanced topic in accountancy — from journal entries to final accounts — in Plus One, Plus Two, and beyond into CA or B.Com.

Concept

Quick myth-check

Lots of students think…

"The Accrual Concept means revenue is recorded when the cash is actually received."

Actually…

Revenue is recorded when goods are delivered or services are performed, regardless of when payment arrives. Cash received later is simply the settlement of a debt the customer already owed — the earning already happened.

Every balance sheet follows a shared set of rules — accounting concepts and conventions — so that financial statements are honest and comparable. By the end of this chapter you will know exactly what those rules are and why each one exists.

Business Entity Concept

The business and its owner are treated as two completely separate persons in the eyes of accounting. Whatever the owner puts into the business is recorded as the business's capital — money it owes back to the owner — not as the owner's personal money sitting around.

Real-life example

Rajan runs a kirana shop in Thrissur and deposits ₹3 lakh of his personal savings into the shop's bank account to start it. In the accounts, that ₹3 lakh is the shop's capital — a liability the shop owes Rajan. Rajan's home loan and personal expenses never enter the shop's books at all.

Going Concern Concept

Accounting assumes the business will keep running for the foreseeable future — it is not about to shut down tomorrow. Because of this assumption, assets are valued at what they cost, not at the fire-sale price you would get if you had to close suddenly.

Real-life example

Rajan bought refrigerators for his shop for ₹80,000. If the shop were closing tomorrow, he might only get ₹20,000 for them second-hand. But because the shop is a going concern, the books show them at ₹80,000 (less depreciation), reflecting normal business use — not a distress sale price.

Money Measurement Concept

Accounting only records things that can be measured in money (rupees). If something real and valuable cannot be given a rupee figure, it stays out of the books entirely. This keeps accounts objective and verifiable.

Real-life example

Priya's garment shop in Kozhikode has an excellent reputation on the street and a very loyal group of regular customers. Both are real business advantages, but neither has a clear rupee value everyone would agree on — so neither appears in her accounts. Only the ₹60,000 uniform sale she can invoice goes in.

Cost Concept and Accounting Period

The Cost Concept says every asset is recorded at the original price paid for it, not at today's market value. The Accounting Period Concept divides the continuous life of a business into fixed time slices — usually one financial year (1 April to 31 March in India) — so profit and loss can be calculated regularly.

Real-life example

Priya's mother bought the shop premises in Kozhikode for ₹4 lakh in 2010. It is worth ₹18 lakh today, but the books still show ₹4 lakh — that is the Cost Concept at work. At the end of every 31 March, the family closes the accounts and calculates the year's profit, even though the business itself never actually 'pauses' — that is the Accounting Period Concept.

Dual Aspect and Accrual + Matching

Every transaction has two sides — every debit has an equal credit — so the basic equation Assets = Liabilities + Capital always balances. The Accrual Concept says record revenue when it is earned and expenses when they are incurred, not when cash moves. The Matching Concept pairs each expense with the revenue it helped earn, giving you the true profit for that period.

Real-life example

Priya delivers 200 school uniforms on 28 October but the school pays in November. She records the ₹60,000 sale in October (Accrual), and also records the ₹22,000 fabric cost and ₹8,000 tailor's wages in October (Matching). October profit = ₹30,000. When cash arrives in November, she just clears the debtor — no new sale is recorded. And both sides of every entry balance: stock falls, debtor rises (Dual Aspect).

Conventions: Conservatism, Consistency, Full Disclosure

Conventions are practical agreements on how to apply the concepts. Conservatism says: record a probable loss now, but record a gain only when it is certain. Consistency says: once you pick an accounting method, stick with it year after year so results can be compared. Full Disclosure says: tell readers everything important — including problems and policy changes — in the financial statements or their notes.

Real-life example

A customer owes Priya's shop ₹30,000 and has stopped responding for months. Conservatism tells her to create a provision for bad debt immediately — not wait to see if he pays. But when her lawyer says she might win a ₹1 lakh court case, she does not book that income yet — it is not certain. She uses the straight-line depreciation method every year without switching (Consistency), and when she changes her stock valuation method she mentions it clearly in a note (Full Disclosure).

Notes

Every rupee that enters or leaves the shop lands on both sides of the scale — that is the Dual Aspect Concept keeping accounts in balance.

The full picture

Imagine two shopkeepers in Thrissur, both running textile shops, both profitable. If each one records transactions using his own personal logic, their balance sheets become impossible to compare. Accounting solves this by building on a shared Theory Base — a set of concepts and conventions that every accountant follows. These are not arbitrary rules invented in a classroom; they reflect the economic reality of how businesses actually work.

The first group of ideas is called accounting concepts — they describe what a business is and what accounting measures. The Business Entity Concept draws a clear line between the owner and the business: when Rajan invests ₹5 lakh of personal savings into his kirana shop, the shop records that as its own capital, not as Rajan's money sitting in a drawer. The Going Concern Concept assumes the business will keep running indefinitely, so assets like refrigerators and shelves are valued at their purchase cost, not at the distress price you would get if you had to sell everything tomorrow.

Three more concepts shape what gets recorded and when. The Money Measurement Concept says accounting only captures events that can be expressed in rupees — so Rajan's loyal staff and his shop's reputation on the street are real advantages but do not appear in the books. The Cost Concept values every asset at the price actually paid, not at today's market value; a shop space bought for ₹8 lakh in 2015 stays at ₹8 lakh in the books even if it is worth ₹25 lakh today. The Accounting Period Concept divides continuous business life into fixed time intervals — usually a financial year (1 April to 31 March in India) — so profit and loss can be calculated periodically, not just when the owner decides to check.

The Dual Aspect Concept is accounting's most important identity: Assets = Liabilities + Capital. Every single transaction touches at least two accounts — a debit and a credit — and the equation always stays balanced. If Rajan buys goods for ₹50,000 on credit, stock (asset) rises and creditors (liability) rise by the same amount. The Accrual Concept says revenue belongs to the period when it is earned, and expenses belong to the period when they are incurred — regardless of when cash moves. A sale made on 28 March is March revenue even if the customer pays in April. The Matching Concept pairs costs with the revenues they helped generate: if you pay a delivery boy's salary in March for March deliveries, that salary expense matches March sales, giving you the true March profit.

The second group, accounting conventions, are practical agreements on how to apply those concepts consistently. Consistency requires that once you choose a method — say, the straight-line method for depreciation — you stick with it year after year. Switching methods every year would let a business paint any profit picture it liked. Full Disclosure requires that all material facts, including pending court cases or a change in accounting policy, be clearly stated in the financial statements or their notes. Materiality recognises that strict rules can be relaxed for genuinely trivial amounts: a ₹200 stapler can be expensed immediately rather than capitalised as a fixed asset.

Conservatism (also called Prudence) is the convention that tells you to expect the worst and hope for the best — in accounting terms, recognise a probable loss now, but recognise a gain only when it is certain. So if a debtor owes your business ₹30,000 and looks unlikely to pay, you create a provision for bad debts immediately. But if you are expecting to win a ₹1 lakh court case, you do not record that income until the court actually awards it. This asymmetry protects creditors and investors from over-optimistic books.

In India, these concepts and conventions are formalised through Accounting Standards (AS) issued by the Institute of Chartered Accountants of India (ICAI) and reinforced by the Companies Act 2013. When you read a company's annual report, the section labelled 'Significant Accounting Policies' is where the company declares which concepts and conventions it has applied — exactly what this chapter teaches you to understand and evaluate.

An Indian example

Priya and her mother run a small readymade garments shop in Kozhikode called 'Lakshmie Threads'. In October, a school places an order for 200 uniforms worth ₹60,000. Priya stitches and delivers the uniforms on 28 October, but the school pays only in November after checking the stock. Priya records ₹60,000 as October sales — not November — because the Accrual Concept says revenue is earned when goods are delivered. The fabric cost ₹22,000 and she paid the tailor ₹8,000 in October itself, so the Matching Concept tells her to record all ₹30,000 of costs in October too, giving a clear October profit of ₹30,000. When November's bank statement shows the school's payment arriving, no new sale is recorded — only the debtor account is cleared. Meanwhile, Priya's brother suggests writing the shop's land (bought in 2010 for ₹4 lakh) at its current value of ₹18 lakh to make the business look stronger to a bank lender. Priya refuses — the Cost Concept requires she keep it at ₹4 lakh, and full market revaluation would need proper disclosure under accounting standards.

Common misconceptions to watch for

  • Accrual Concept means revenue is recorded only when cash is received — wrong. Revenue is recorded when goods are delivered or services are rendered, and the matching expense is recorded in the same period. Cash arriving later is just the settlement of a debt the customer already owed.
  • Conservatism means the business is allowed to deliberately understate profit to reduce its tax bill — wrong. Conservatism is about prudence: probable losses are provided for immediately, but unearned or uncertain gains are not recognised yet. It is a safeguard for creditors and investors, not a tool for tax manipulation.
  • Going Concern Concept guarantees that a business will never shut down — wrong. It is simply a default assumption: in the absence of evidence to the contrary, the accountant assumes the business will continue long enough to fulfil its plans and obligations. If that assumption becomes doubtful — due to heavy losses, legal action, or insolvency — it must be disclosed clearly in the financial statements.

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Questions

Worked example

Indian Paints Ltd., a paint manufacturer in Gujarat, receives an order on 15 June to supply ₹50,000 of paint to a contractor. The paints are delivered on 20 June. The contractor issues a cheque on 25 June, which clears Indian Paints' bank account on 27 June. Under the Accrual Concept, in which month should Indian Paints recognise the ₹50,000 as revenue?

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  1. 1
    Identify the transaction trigger under Accrual Concept.
    Accrual Concept requires revenue to be recognised when goods or services are transferred to the customer, not when payment is received. The key moment is when control of the goods passes to the buyer.
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Practice

Question 1 of 5 · easy

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A coaching institute in Kerala collects ₹1,00,000 in fees on 30 June for tuition classes that will run from July to September. Under Accrual Concept, when should the coaching institute recognise this ₹1,00,000 as revenue?

Quiz

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Quiz

Question 1 of 5 · easy

0 / 5 correct

A coaching institute in Kerala collects ₹1,00,000 in fees on 30 June for tuition classes that will run from July to September. Under Accrual Concept, when should the coaching institute recognise this ₹1,00,000 as revenue?

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