The Use of Double-entry Bookkeeping and Accounting Systems
Source documents, books of original entry, general ledger accounts, journals, debits, credits and accounting-system flows.
How to study ACCA Applied Knowledge
Learn each principle, practise its application in the computer-based exam format and keep the three independent 50% pass decisions visible.
Core concepts
Concept 1
Double entry records equal debit and credit effects so the accounting equation remains balanced.
Exam cue: Identify which assets, liabilities, equity, income or expenses change and in what direction.
Concept 2
Source documents feed books of original entry and ledgers through controlled classifications, totals and posting references.
Exam cue: Trace the transaction from source document through original entry, ledger and trial balance.
Concept 3
Journal entries should state the accounts, direction, amount, date and business substance rather than rely on memorised labels.
Exam cue: Check that total debits equal total credits while recognising that balance alone does not prove correct classification.
Risk pitfalls and guardrails
Choosing debit or credit from whether cash was received rather than the account effect.
Guardrail: Do not import a rule, formula or reporting format from memory without checking the period, units, signs, entity and current syllabus scope.
Posting one side to the correct account and the other to a plausible but wrong account.
Guardrail: Do not import a rule, formula or reporting format from memory without checking the period, units, signs, entity and current syllabus scope.
Assuming a balanced entry cannot contain an error.
Guardrail: Do not import a rule, formula or reporting format from memory without checking the period, units, signs, entity and current syllabus scope.
Memory anchors
Double Entry
Every transaction has equal debit and credit entries in the accounting records.
Debit
A debit increases assets and expenses and decreases liabilities, equity and income.
Credit
A credit increases liabilities, equity and income and decreases assets and expenses.
Journal
A journal records and explains a non-routine or correcting double-entry instruction.
Ledger
A ledger groups transaction effects by account so balances can be determined.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What is the accounting equation?
Owner invests $20,000 cash. Entry?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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