Key Concepts & Rules (Grade 12 NSC Matric Accounting): Revision Notes

Key Concepts & Rules

Learning accounting can feel overwhelming at first, but mastering these fundamental concepts and rules will give you a solid foundation for success. Think of these as the building blocks that everything else in accounting is built upon.

Essential accounting terminology

Understanding key accounting terms is crucial for your success in this subject. These definitions form the vocabulary you'll use throughout the year, so take time to learn them properly.

Financial position terms

Assets are valuable items that belong to a business or individual and help generate profits. Think of these as resources that have economic value - like cash, equipment, buildings, or money owed to the business by customers.

Liabilities represent amounts that a business owes to other parties. These are financial obligations that must be paid back, such as loans from the bank or money owed to suppliers.

Owner's equity shows the net worth or value of the business at any point in time. You can calculate this by taking total assets and subtracting total liabilities. This represents what the owner actually owns in the business after all debts are paid.

People the business deals with

Debtors are customers who owe money to the business for goods they bought on credit. When you sell something and the customer promises to pay later, they become a debtor.

Creditors are suppliers or other parties to whom the business owes money. When your business buys goods on credit and promises to pay later, the supplier becomes a creditor.

Income and expense concepts

Profit occurs when a business earns more income than it spends on expenses. This is the goal of most businesses - to make more money than they spend.

Loss happens when expenses exceed income. This means the business spent more than it earned during a particular period.

Cost of sales refers to the actual cost price paid for all goods that have been sold during a period. This doesn't include goods still in stock - only those actually sold to customers.

Time-related accounting items

These concepts can be tricky because they involve timing differences between when money is paid/received and when it relates to the current financial year.

Accrued expenses (also called expenses payable) are costs that the business owes but hasn't paid yet by the end of the financial year. For example, electricity used in December but only paid in January.

Accrued income (also called income receivable) is money that customers owe to the business but haven't paid yet by year-end. This is income the business has earned but not yet received.

Prepaid expenses are costs the business has already paid but which relate to the next financial year. For instance, paying insurance for the following year in advance.

Income received in advance (also called deferred income) is money already collected from customers but for services or goods to be provided in the next financial year.

Other important concepts

Depreciation measures how much fixed assets (like machinery or vehicles) decrease in value over time due to use and wear. This helps businesses account for the gradual loss of asset value.

Mark-up is the percentage added to the cost price of goods to determine the selling price. This percentage represents the profit margin the business wants to achieve.

Bad debts are amounts owed by customers who are unlikely to pay their accounts. These debts are written off as losses since they probably won't be collected.

Trading stock deficit occurs when a physical stock count reveals less inventory than shown in the accounting records. This could indicate theft, damage, or record-keeping errors.

Trading stock surplus happens when physical stock is more than what the accounting records show. This is less common but can occur due to recording errors.

Rules of accounting

The double-entry bookkeeping system follows specific rules that never change. These rules determine whether transactions should be recorded as debits (Dr) or credits (Cr). Master these rules and you'll find accounting much easier to understand.

The fundamental rule structure

Every account type has specific rules about when to use debits and credits:

Assets follow this pattern:

• Debit when assets increase (you gain something valuable)
• Credit when assets decrease (you lose or sell something valuable)

Liabilities work in the opposite way:

• Debit when liabilities decrease (you pay off a debt)
• Credit when liabilities increase (you take on more debt)

Owner's equity components

Owner's equity has several components, each with specific rules:

Capital (owner's investment in the business):

• Debit when capital decreases (owner takes money out permanently)
• Credit when capital increases (owner invests more money)

Drawings (money taken by owner for personal use):

• Debit when drawings increase (owner takes money out)
• Credit when drawings decrease (rare - usually corrections)

Expenses (costs of running the business):

• Debit when expenses increase (you spend more money)
• Credit when expenses decrease (corrections or refunds)

Income (money earned by the business):

• Debit when income decreases (corrections or returns)
• Credit when income increases (you earn more money)

Why these rules matter

Understanding these rules helps you determine the effect of every transaction on the business's financial position. When you increase expenses, profit decreases because you're spending more. When you increase income, profit increases because you're earning more.

Practical application tips

When working with these rules, follow this systematic approach:

• Remember that these rules never change - learn them thoroughly
• Practice applying the rules to different scenarios
• Always ask yourself: "Is this account increasing or decreasing?"
• Check that your debits equal your credits for every transaction
• Use the accounting equation: Assets = Liabilities + Owner's Equity