How does the accounting equation work, and how are transactions recorded using double entry in ledger accounts and checked with a trial balance?
The accounting equation, recording financial transactions using double entry in ledger accounts, balancing accounts, and preparing a trial balance to check the entries.
A focused answer to the SQA National 5 Accounting content on recording transactions, covering the accounting equation, the rules of double entry, posting to ledger accounts, balancing an account, and preparing a trial balance to check that total debits equal total credits.
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What this dot point is asking
The SQA wants you to understand the accounting equation, record transactions using double entry in ledger accounts, balance those accounts, and draw up a trial balance that checks total debits equal total credits.
The accounting equation
Everything a business owns (its assets) is funded either by the owner (capital) or by other people it owes (liabilities). That gives the foundation of all accounting:
Every transaction changes at least two items but always keeps both sides equal. If the owner pays of cash into the business, the asset "cash" rises by and capital rises by . If the business buys a machine for cash, one asset (machinery) rises and another (cash) falls by the same amount, so the total is unchanged.
The rules of double entry
Double entry turns the equation into a recording system. Each transaction has a debit entry (left side of an account) and an equal credit entry (right side of another account).
So a cash sale debits the cash (asset up) and credits sales (income up). Paying rent debits rent (expense up) and credits cash (asset down). Buying goods on credit debits purchases (expense up) and credits the supplier (liability up).
Posting and balancing a ledger account
Each account is a "T" with debits on the left and credits on the right. To balance an account, total both sides, find the difference, and carry it down as the closing balance.
The trial balance
Once every account is balanced, the balances are listed in a trial balance: debit balances in one column, credit balances in the other. If the bookkeeping is arithmetically correct, the two totals are equal.
Examples in context
When a sole trader buys of stock on credit, the bookkeeper debits purchases (an expense) and credits the trade payable (a liability) - two equal entries that keep the accounting equation true. At the year end, every balanced account is listed in a trial balance; that list becomes the starting point for the income statement and statement of financial position. Understanding why each balance is a debit or a credit is the skill this dot point builds.
Try this
Q1. A business has capital of and liabilities of . Find its assets. [2 marks]
- Cue. Assets .
Q2. State the double entry for paying rent by cash. [2 marks]
- Cue. Debit rent ; credit cash .
Q3. On which side does a liability increase? [1 mark]
- Cue. The credit side.
Exam-style practice questions
Practice questions written in the style of SQA exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
SQA N5 style4 marksA business has assets of 50000 pounds and liabilities of 18000 pounds. State the accounting equation and calculate the owner's capital. Then state the new capital if the owner introduces a further 5000 pounds of cash.Show worked answer →
The accounting equation is Assets Capital Liabilities (1 mark). Rearranging, Capital Assets Liabilities (1 mark for method, 1 mark for answer). Introducing of cash increases both assets (cash) and capital by , so capital becomes and the equation still balances (1 mark). Markers reward the correct form of the equation, the calculated capital, and showing that the new contribution keeps the equation in balance.
SQA N5 style3 marksExplain what a trial balance is and one reason it might still balance even though an error has been made.Show worked answer →
A trial balance is a list of all the ledger account balances, with debit balances in one column and credit balances in the other, drawn up to check that total debits equal total credits (1 mark). It balances when the two totals agree (1 mark). It can still balance despite an error - for example an error of omission (a transaction left out entirely), an error of commission (right amount, wrong account of the same type), or a compensating error (two errors of equal size cancelling out) (1 mark for any one such error). Markers reward defining the trial balance as an equality check and naming one error it does not detect.
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