Lesson

Theory Base of Accounting

Accounting follows common rules so that business records are reliable, comparable, and easy to understand.

Understand the basic rules and assumptions that make accounting reliable.

Beginner10-12 min

Concept explanation

Understand the idea first

Simple meaning of Theory Base of Accounting

Theory Base of Accounting means the basic rules, assumptions, concepts, and principles that guide how accounting is done.

Imagine every shopkeeper records business differently. One records sales today, another records sales next month, and another mixes personal spending with business spending.

Then nobody can understand or compare accounts properly.

So accounting needs a common base. That common base is called the Theory Base of Accounting.

Why accounting needs a theory base

Accounting rules make accounts reliable, so people can trust them.

They bring consistency, so the same method is followed every year.

They allow comparability, so one year can be compared with another year.

They bring clarity, so students, owners, banks, and others can understand accounts.

They help accounts show a fair picture of the business.

Simple story

Raju runs a stationery shop.

He buys notebooks for Rs.10,000.

He sells goods for Rs.5,000.

He pays house electricity from business cash.

He also gives goods to a friend and says he will record it later.

If Raju records everything without rules, will his accounts show the real picture? No.

Accounting rules help him decide what should be recorded, when it should be recorded, whether it belongs to business or personal life, how value should be measured, and how accounts should be prepared consistently.

Basic accounting assumptions

Business Entity Assumption: business and owner are treated separately. If the owner uses business cash for personal use, it is Drawings, not a business expense.

Money Measurement Assumption: only things that can be measured in money are recorded. Bought goods for Rs.10,000 is recorded, but owner is hardworking is not recorded.

Going Concern Assumption: business is assumed to continue in the future. Machinery is used for many years, so its cost is not treated as one-day expense.

Accounting Period Assumption: business life is divided into periods such as month, quarter, or year to calculate profit or loss.

Basic accounting principles and concepts

Cost Concept: assets are recorded at purchase cost. Furniture bought for Rs.20,000 is recorded at Rs.20,000.

Dual Aspect Concept: every transaction has two sides. Started business with cash Rs.50,000 means cash increases and capital increases.

Matching Concept: expenses of a period should be matched with income of the same period.

Accrual Concept: income and expenses are recorded when they become due, not only when cash is received or paid.

Revenue Recognition Concept: revenue is recorded when it is earned. Goods sold on credit are recorded as sales even if cash is not received yet.

Basic accounting conventions

Consistency: use the same accounting method every year unless there is a good reason to change.

Conservatism or Prudence: do not overstate profit. Record expected losses carefully.

Materiality: important items should be recorded properly. Very small items may be treated simply.

Full Disclosure: important information should be clearly shown.

Accounting standards in simple words

Accounting standards are official rules or guidelines.

They help businesses prepare accounts in a common way.

They make accounts more reliable and comparable.

You do not need to learn a full standards list here. First, understand why common rules are needed.

Visual flow

Mental model

1

Business transaction

2

Apply assumptions

3

Apply concepts

4

Record correctly

5

Prepare reliable accounts

6

Understand business position

Solved examples

See the rule in action

Example 1

Owner used business cash Rs.5,000 for personal expenses.

Concept: Business Entity
Accounting idea: Treat it as Drawings.

This is not a business expense.

Owner and business are separate in accounting.

Example 2

Goods sold to Raju Rs.10,000 on credit.

Concept: Accrual / Revenue Recognition
Accounting idea: Record sales when goods are sold.

Sales are recorded when earned.

Cash does not need to be received immediately for sales to be recorded.

Example 3

Furniture bought for Rs.20,000.

Concept: Cost Concept
Accounting idea: Record furniture at Rs.20,000.

Furniture is recorded at purchase cost.

The recorded value starts with the amount paid to buy it.

Example 4

Salary for March Rs.8,000 is unpaid.

Concept: Accrual Concept
Accounting idea: Record salary expense even if unpaid.

The salary belongs to March.

It is recorded as an expense even if cash is paid later.

Example 5

Business creates provision for doubtful debts.

Convention: Conservatism / Prudence
Accounting idea: Record possible loss carefully.

Some debtors may not pay.

The business does not assume every amount will be collected perfectly.

Avoid these

Common Mistakes

Mixing owner's personal expenses with business expenses
Thinking only cash transactions are recorded
Not recording credit sales or credit purchases
Changing accounting method every year without reason
Recording things that cannot be measured in money
Thinking capital and profit are the same
Ignoring outstanding expenses and accrued income

Practice prompts

Try It Yourself

Owner takes Rs.3,000 cash from business for personal use. Expected idea: Business Entity; treat it as Drawings.
Goods sold on credit Rs.12,000. Expected idea: revenue is recorded when earned; accrual/revenue recognition.
Machinery bought for Rs.50,000. Expected idea: Cost Concept.
Salary outstanding Rs.5,000. Expected idea: Accrual Concept.
Business uses the same depreciation method every year. Expected idea: Consistency.
Provision for doubtful debts is created. Expected idea: Conservatism / Prudence.

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