Chapter Overview & Core Focus
Business activities involving exchange of money or money's worth are called business transactions. This chapter details how source documents evidence transactions, how accounting vouchers are created, the mathematical dynamics of the Accounting Equation ($A = L + C$), rules of debit and credit across five account types, and accounting bases.
Source Documents & Accounting Vouchers
Core Concept & Clear Explanation
All business transactions are grounded in primary documentary proof known as Source Documents (e.g., Cash Memos, Invoices, Payee Receipts). These serve as legal evidence.
An Accounting Voucher is a written document prepared by an accountant and countersigned by an authorized signatory. It analyzes transactions by identifying which specific accounts are to be debited and credited.
Practical Example & Application
Example: Purchasing a computer for office use for ₹40,000 cash.
- Take Aspect (Debit): Computer / Asset acquired.
- Give Aspect (Credit): Cash payment released.
- Document: Cash memo serves as source proof to prepare a Debit Voucher.
| Voucher Type | Sub-Category | Primary Purpose / Nature | Typical Examples |
|---|---|---|---|
| Cash Voucher | Debit Voucher | Recording transactions involving Cash Payments only. | Payment of salary, cash purchases, paying creditors, asset purchases. |
| Credit Voucher | Recording transactions involving Cash Receipts only. | Cash sales, loan proceeds received, interest/rent received in cash. | |
| Non-Cash Voucher | Transfer Voucher | Recording Non-Cash / Credit transactions (Debit & Credit prepared simultaneously). | Credit purchases/sales, return of goods, depreciation, bad debts, opening balances. |
The Accounting Equation & Transaction Effects
Fundamental Concept
The recording of all business transactions rests on the equality between total assets and total equities (claims against assets):
(A = L + C)
Every transaction exhibits a Dual Aspect. Any shift in assets produces a corresponding change in either liabilities or owner's capital, preserving balance sheet equilibrium at all times.
Impact of Revenue & Expenses on Capital
Revenues increase cash/debtors and expand net income; hence, they are ADDED to Capital.
Expenses decrease cash or create liabilities, reducing net income; hence, they are DEDUCTED from Capital.
Rules of Accounting (Debit & Credit)
Accounts take the shape of the English letter 'T'. The left side is designated as Debit (Dr.) and the right side as Credit (Cr.). Accounts are classified into 5 functional categories:
Bases of Accounting & Double Entry Mechanism
Cash Basis of Accounting
Transactions are recognized strictly when cash is received or paid out.
- Ignores outstanding expenses & accrued incomes.
- Does not follow the Matching Principle.
- Not recognized under the Companies Act 1956.
Accrual Basis of Accounting
Revenues and expenses are recognized in the period to which they relate, irrespective of cash exchange.
- Includes credit sales, outstanding expenses, prepaid items.
- Calculates true profit/loss; recognized by Companies Act 1956.
- Used universally across standard business enterprises.