Principles of accounting and double entry bookkeeping

Welcome to the World of Accounting!

Welcome! You are about to dive into the "engine room" of the business world. This chapter, Principles of accounting and double entry bookkeeping, is the foundation of everything you will do in your Edexcel IA-Level Accounting course. Whether you want to run your own business one day or become a professional accountant, understanding how to record and report money is your "superpower." Don't worry if it seems a bit like learning a new language at first—we'll take it step-by-step!

1. The Role and Purpose of Accounting

Why do we bother with all these numbers? Simply put, accounting is about recording, analysing, and communicating financial information. Think of an accountant as a professional "scorekeeper." Without a scoreboard, the players (managers) and the fans (investors) wouldn't know who is winning or losing!

Who uses this information?

Accounting information acts as an essential aid to management. They use it to:
• Plan: Deciding what to buy or sell next year.
• Control: Making sure the business isn't spending too much.
• Decision Making: Should we open a new branch or hire more staff?

Quick Review: Accounting isn't just about math; it’s about providing a clear picture of a business's health so people can make smart choices.

2. The Double Entry System

This is the "Golden Rule" of accounting. Every single transaction has a dual effect. If you spend cash to buy a computer, your "Cash" goes down, but your "Equipment" goes up. We record these in ledger accounts (often called T-accounts because of their shape).

The DEAD CLIC Mnemonic

If you find "Debits" and "Credits" confusing, just remember this simple trick to know which side to increase:
D.E.A.D (Debit these to increase them):
Debit: Expenses, Assets, Drawings.
C.L.I.C (Credit these to increase them):
Credit: Liabilities, Income, Capital.

Books of Prime Entry

Before transactions reach the main ledger, they are listed in books of prime entry. Think of these as "waiting rooms" where we list similar items together before moving them to the big accounts.
• Sales Journal: For credit sales.
• Purchases Journal: For credit purchases.
• Cash Book: For all bank and cash transactions.
• The Journal: For "unusual" things like buying a van on credit or correcting errors.

Did you know? Most modern businesses use ICT (Information and Communication Technology) to do this. Instead of big paper books, they use software. While you won't be tested on specific software like Excel or Sage, you need to know that ICT makes recording faster and reduces human error!

Key Takeaway: Every transaction affects two sides. Use DEAD CLIC to help you remember which is which!

3. Accounting Concepts and Conventions

To make sure all businesses play by the same rules, we follow Accounting Concepts and International Accounting Standards (IAS). These are like the "rules of the game."

1. Going Concern: We assume the business will keep running for the foreseeable future. We don't plan on closing down tomorrow!
2. Prudence: Never be too optimistic. Always record all possible losses, but only record profits when they are certain. (Analogy: It’s better to expect rain and be pleasantly surprised by sun than to get soaked without an umbrella!)
3. Accruals (Matching): Profit is calculated by matching income earned against expenses used in that same period, regardless of when the cash actually changes hands.
4. Consistency: Use the same accounting methods every year so we can compare the results fairly.
5. Business Entity: The business is separate from the owner. If the owner buys a personal pizza with business money, that is recorded as Drawings, not a business expense!
6. Money Measurement: We only record things that can be measured in money. (We can't record "having a very nice boss" in the accounts!)
7. Materiality: Only record things that are big enough to matter. We don't need a separate 10-year depreciation table for a \$2 stapler; we just call it an expense.

4. Capital vs. Revenue Expenditure

This is a favorite topic for exam questions! You must know the difference:
• Capital Expenditure: Money spent on buying or improving non-current assets (like a delivery van or a building). This stays in the business for a long time.
• Revenue Expenditure: Money spent on the day-to-day running of the business (like petrol for the van or electricity bills).

Common Mistake: Students often think "repairs" are Capital Expenditure. Nope! Repairs just keep the asset in its original working condition, so they are Revenue Expenditure. Only an "improvement" (like adding a new engine to a van) is Capital.

Key Takeaway: Capital = Buying the asset. Revenue = Running the asset.

5. Non-Current Asset Depreciation

Assets like cars and computers lose value over time. This loss in value is called Depreciation. We record this to follow the Accruals and Prudence concepts.

Why do assets depreciate?

• Wear and Tear: Physical use (like driving a car).
• Obsolescence: Newer technology makes the old one useless (like an old iPhone).
• Effluxion of time: Some things (like a 5-year lease) just run out over time.

Common Methods to Calculate Depreciation

1. Straight Line Method: The asset loses the same amount of value every year.
Formula: \( \text{Annual Depreciation} = \frac{\text{Cost} - \text{Residual Value}}{\text{Useful Life}} \)

2. Reducing Balance Method: The asset loses more value in the early years and less later on (common for cars). We apply a fixed percentage to the Net Book Value (NBV) each year.
Formula: \( \text{Depreciation} = \text{NBV} \times \text{Percentage} \)
(Note: \( \text{NBV} = \text{Cost} - \text{Accumulated Depreciation} \))

3. Revaluation Method: Used for small items like loose tools. We compare the value at the start and end of the year.

Disposal of Assets

When we sell a non-current asset, we use a Disposal Account to see if we made a profit or loss on the sale. If the money we get is more than the Net Book Value, we made a profit!

Quick Review: Depreciation is just a way of spreading the cost of an asset over the years we use it. It doesn't involve actual cash leaving the bank every year!

6. Irrecoverable Debts and Allowances

Sometimes, customers who bought on credit simply cannot pay (maybe they went bankrupt). These are Irrecoverable Debts (formerly called Bad Debts).

The Process

1. Write off: When we are certain they won't pay, we remove them from our Trade Receivables and record it as an Expense.
2. Allowance for Irrecoverable Debts: Because of Prudence, we estimate how much we might lose next year from other customers. We create an "Allowance" (a percentage of our total receivables).
• If the allowance needs to increase, the increase is an Expense.
• If the allowance can decrease, the decrease is Income.

Don't worry! Calculating the allowance can be tricky. Just remember: always calculate the new allowance first, then compare it to the old one to see the change.

Summary Checklist

Before you move to the next chapter, make sure you can:
• Explain why management needs accounting information.
• Use DEAD CLIC to record transactions in T-accounts.
• Identify which book of prime entry to use for a transaction.
• Explain the difference between Capital and Revenue expenditure.
• Calculate depreciation using Straight Line and Reducing Balance methods.
• Record a bad debt and adjust the allowance.

You've got this! Keep practicing those T-accounts and they will soon become second nature!