Use these 60 concepts to connect accounting rules with calculations and practical decisions. Each concept explains one distinction, works through an original example and identifies a specific error to avoid. The material provides general accounting foundations for readers exploring CAT Qualification (Certified Accounting Technician).
Financial accounting foundations
1. The accounting equation
Assets equal liabilities plus equity. Every recorded transaction preserves this relationship, although it may change several balances. Owner contributions increase equity without creating revenue, while drawings reduce equity without creating an operating expense. Use the equation to distinguish business performance from transactions with owners.
Worked example: An owner contributes 12,000 and the business borrows 8,000. Cash is 20,000, liabilities are 8,000 and equity is 12,000.
Mistake to avoid: Treating borrowed cash or an owner’s contribution as sales revenue.
Reference: Practice information handbook | ACCA Global
2. Debit and credit directions
A debit increases an asset or expense; a credit increases a liability, equity or income. Decreases normally use the opposite side. Each journal entry contains equal total debits and credits. The words debit and credit describe accounting positions, rather than whether a transaction is beneficial.
Worked example: Buying equipment for 900 cash requires a 900 debit to equipment and a 900 credit to cash.
Mistake to avoid: Assuming every debit means money has entered the business.
Reference: Practice information handbook | ACCA Global
3. Accrual profit versus cash movement
Accrual accounting recognises income and expenses in the periods to which they relate, subject to the applicable recognition rules. Cash accounting follows receipts and payments. Consequently, profitable trading can coexist with a cash shortage when customers have not paid, and cash receipts can precede the earning of income.
Worked example: Services earned revenue of 3,000, but customers paid only 2,200. Before expenses, accrual revenue is 3,000 and customer cash receipts are 2,200.
Mistake to avoid: Using bank receipts as a complete measure of revenue.
Reference: Practice information handbook | ACCA Global
4. Customer advances and earned revenue
Receiving money does not by itself establish that revenue has been earned. An advance for future work generally creates an obligation to provide goods or services. Revenue recognition follows fulfilment of the relevant obligation under the applicable framework. Track what has been delivered separately from what has been invoiced or collected.
Worked example: A customer prepays 1,200 for four equal monthly services. After one service is delivered, recognised revenue is 300 and the remaining advance is 900.
Mistake to avoid: Recognising the entire advance as revenue on receipt.
Reference: Practice information handbook | ACCA Global
5. Capital expenditure and operating expense
Expenditure qualifies for asset recognition only when it meets the applicable asset criteria. A purchase that supports several periods may be capital expenditure; routine consumption or maintenance is usually an expense. Payment size alone does not decide the classification, and subsequent improvements require separate assessment.
Worked example: A machine costing 6,000 is recognised as equipment when the asset criteria are met. A 200 routine service is recorded as an expense.
Mistake to avoid: Capitalising every large payment merely to increase reported profit.
Reference: Practice information handbook | ACCA Global
6. What a trial balance proves
A trial balance lists ledger balances and checks whether total debits equal total credits. Agreement is a useful arithmetic check, but it cannot establish that transactions are complete or correctly classified. Entirely omitted entries and entries posted to the wrong accounts can leave the totals equal.
Worked example: A 450 repair is debited to equipment and credited to cash. The trial balance still agrees, although the expense classification is wrong.
Mistake to avoid: Treating an agreeing trial balance as proof that the accounts contain no errors.
Reference: Practice information handbook | ACCA Global
7. Bank reconciliation
Bank reconciliation explains differences between the cash ledger and the bank statement. Timing differences, such as unpresented payments, belong in the reconciliation. Items omitted from the ledger, such as bank charges, normally require ledger updates. Separate these categories before deciding whether any unexplained difference remains.
Worked example: A ledger balance of 2,500 becomes 2,450 after recording a 50 bank charge. A statement balance of 2,750 less 300 unpresented payments also equals 2,450.
Mistake to avoid: Recording an unpresented payment twice when it is already in the ledger.
Reference: Practice information handbook | ACCA Global
8. Accruals and prepayments
An accrued expense has been incurred but remains unpaid or unrecorded. A prepayment is a payment relating to a future period. Adjustments allocate the appropriate expense to the reporting period and recognise the remaining liability or asset. Identify the covered dates before calculating either adjustment.
Worked example: Insurance of 1,200 covers twelve months from October. At December’s year-end, expense is 300 and the prepayment is 900.
Mistake to avoid: Expensing the full annual payment without considering the coverage period.
Reference: Practice information handbook | ACCA Global
9. Inventory and cost of sales
For a straightforward trading business, cost of sales equals opening inventory plus purchases minus closing inventory, with relevant purchase adjustments included. Goods remaining unsold are carried forward rather than charged against current sales. Apply the selected inventory costing method consistently within the applicable accounting framework.
Worked example: Opening inventory is 4,000, purchases are 18,000 and closing inventory is 5,500. Cost of sales is 16,500.
Mistake to avoid: Adding closing inventory to purchases when calculating cost of sales.
Reference: Practice information handbook | ACCA Global
10. Inventory write-downs
A common inventory measurement principle is the lower of cost and net realisable value. Net realisable value is expected selling price less estimated completion and selling costs. Damaged or obsolete goods may therefore require a write-down even when their original purchase cost was correctly recorded.
Worked example: An item costs 80, can sell for 75 and requires 5 of selling costs. Its net realisable value is 70, producing a 10 write-down.
Mistake to avoid: Comparing cost with selling price while ignoring necessary selling costs.
Reference: Practice information handbook | ACCA Global
11. Straight-line depreciation
Depreciation allocates an asset’s depreciable amount over its useful life. Under straight-line depreciation, annual expense equals cost less residual value, divided by useful life. It is an allocation process rather than a prediction of market price. Partial-period charges depend on the period the asset is available for use.
Worked example: Equipment costs 10,000, has a 1,000 residual value and a five-year useful life. Annual depreciation is 1,800.
Mistake to avoid: Depreciating the residual value as well as the amount expected to be consumed.
Reference: Practice information handbook | ACCA Global
12. Receivables and estimated credit losses
Receivables may require an allowance for amounts not expected to be collected. The applicable framework determines the estimation method. An allowance reduces the reported net receivable without necessarily removing individual customer balances. Distinguish this estimate from writing off a specific debt that is no longer recoverable.
Worked example: Gross receivables are 20,000 and the required allowance is 600. Net receivables are 19,400; increasing an existing 400 allowance requires a further 200 expense.
Mistake to avoid: Charging the entire closing allowance as a new expense when an opening allowance already exists.
Reference: Practice information handbook | ACCA Global
13. Provisions and uncertain obligations
A provision represents a recognised liability whose amount or timing is uncertain. Recognition depends on the applicable framework’s obligation, probability and estimation criteria. Some uncertainties require disclosure rather than recognition. A management intention to spend money later does not, by itself, establish a present obligation.
Worked example: A planned 7,000 marketing campaign for next year is merely a future spending plan; that intention alone does not create a current provision.
Mistake to avoid: Creating provisions for future operating costs solely to smooth reported profit.
Reference: Practice information handbook | ACCA Global
14. Correcting errors with a suspense account
A suspense account temporarily holds an unresolved difference; it does not supply the missing explanation. Investigate the original posting and enter a correction that restores the intended accounting treatment. Clear suspense only through identified corrections, preserving an audit trail rather than using an unexplained balancing figure.
Worked example: A 240 expense debit was posted as 24, leaving a 216 debit suspense balance. Correcting it requires debiting the expense 216 and crediting suspense 216.
Mistake to avoid: Writing off suspense without identifying the underlying posting error.
Reference: Practice information handbook | ACCA Global
Costs, budgets and management decisions
15. Fixed and variable cost behaviour
Within a relevant operating range, total fixed cost remains broadly unchanged while total variable cost changes with activity. Fixed cost per unit falls as output increases; variable cost per unit may remain constant. These relationships are assumptions to assess, especially when capacity limits or quantity discounts arise.
Worked example: Monthly rent is 2,000 and materials cost 3 per unit. At 500 units, total cost is 3,500; at 800 units, it is 4,400.
Mistake to avoid: Assuming fixed cost per unit remains constant when output changes.
Reference: Practice information handbook | ACCA Global
16. Direct and indirect costs
A direct cost can be traced economically to a particular cost object, such as a product or project. An indirect cost supports multiple cost objects and requires allocation. Classification depends on what is being measured, so the same cost can be direct to a department but indirect to its products.
Worked example: A supervisor’s salary is directly attributable to one workshop but is indirect to the individual chairs produced there.
Mistake to avoid: Classifying a cost without first identifying the relevant cost object.
Reference: Practice information handbook | ACCA Global
17. Overhead absorption rates
An overhead absorption rate assigns production overhead using a selected activity base. A simple predetermined rate divides budgeted overhead by budgeted activity. Choose a base related to resource use, and recognise that actual spending or activity may cause absorbed overhead to differ from actual overhead.
Worked example: Budgeted overhead of 48,000 divided by 12,000 machine hours gives 4 per hour. A job using 30 machine hours absorbs 120.
Mistake to avoid: Applying a machine-hour rate to labour hours.
Reference: Practice information handbook | ACCA Global
18. Absorption and marginal costing
Absorption costing includes allocated fixed production overhead in product cost; marginal costing treats that fixed overhead as a period cost. When inventory changes, the two approaches can report different profits. Internal decision usefulness and external reporting requirements must be considered separately when choosing an approach.
Worked example: If inventory increases by 100 units carrying 5 fixed production overhead each, absorption profit is 500 higher, assuming no other differences or absorption adjustments.
Mistake to avoid: Interpreting profit created by inventory accumulation as improved sales performance.
Reference: Practice information handbook | ACCA Global
19. Contribution and break-even output
Contribution per unit equals selling price minus variable cost per unit. It first covers fixed costs, then contributes to profit. Break-even output equals fixed costs divided by contribution per unit, assuming stable prices, cost behaviour and sales mix. Round upward where only complete units can be sold.
Worked example: A product sells for 25 and has variable cost of 15. With fixed costs of 4,000, contribution is 10 and break-even output is 400 units.
Mistake to avoid: Using selling price instead of contribution in the break-even calculation.
Reference: Practice information handbook | ACCA Global
20. A limiting resource
When one resource constrains production, rank products by contribution per unit of that scarce resource, subject to demand and other constraints. Contribution per finished unit alone can mislead because products consume different amounts of capacity. More complex situations with several binding constraints require a different optimisation approach.
Worked example: Product A contributes 24 using three machine hours, or 8 per hour. Product B contributes 18 using one hour, so B receives priority.
Mistake to avoid: Prioritising A solely because its contribution per product is higher.
Reference: Practice information handbook | ACCA Global
21. Relevant costs and sunk costs
Relevant costs are future amounts that differ between alternatives. Sunk costs have already been incurred and cannot change with the decision. Opportunity costs also matter when an option sacrifices another benefit. Exclude unavoidable allocations unless the decision changes the underlying expenditure.
Worked example: A special order earns 700 and requires 400 additional materials plus 100 extra labour. With spare capacity and no other effects, it adds 200 contribution.
Mistake to avoid: Rejecting the order because of an unchanged allocation of existing rent.
Reference: Practice information handbook | ACCA Global
22. A production budget
Budgeted production reconciles expected sales with the intended movement in finished inventory. Required production equals sales plus desired closing inventory minus opening inventory. Inventory targets therefore influence resource requirements even when sales remain unchanged. Keep units separate from monetary values when constructing the budget.
Worked example: Expected sales are 900 units, opening inventory is 120 and desired closing inventory is 150. Required production is 930 units.
Mistake to avoid: Adding opening inventory instead of subtracting goods already available.
Reference: Practice information handbook | ACCA Global
23. Flexible budgets
A flexible budget recalculates expected costs for the actual activity level using the budget’s cost behaviour assumptions. It separates spending performance from differences caused simply by producing more or fewer units. Fixed costs remain unchanged only within the relevant range and where the original assumptions still apply.
Worked example: For actual output of 800 units, budgeted variable cost of 3 per unit plus fixed cost of 2,000 gives a flexible budget of 4,400.
Mistake to avoid: Comparing actual costs with a different output level and calling every difference inefficiency.
Reference: Practice information handbook | ACCA Global
24. Material price and usage variances
A price variance isolates the effect of paying a different price; a usage variance isolates the effect of consuming a different quantity for actual output. State the quantity basis and favourable or adverse convention. Investigate the variances together because cheaper material can increase waste.
Worked example: Using 110 kg costing 5.50 per kg against a 5 standard price gives a 55 adverse price variance. Against 100 kg allowed, usage variance is 50 adverse.
Mistake to avoid: Valuing the usage variance at the actual price instead of the standard price.
Reference: Practice information handbook | ACCA Global
25. Labour rate and efficiency variances
The labour rate variance measures the effect of actual hourly pay differing from the standard. The efficiency variance values the difference between actual hours and standard hours allowed for actual output. Neither automatically identifies responsibility: training, equipment failure and product complexity can affect the result.
Worked example: Actual work uses 90 hours at 12, against 80 standard hours at 10. The rate variance is 180 adverse and efficiency variance is 100 adverse.
Mistake to avoid: Comparing actual hours with hours budgeted for a different output.
Reference: Practice information handbook | ACCA Global
26. Responsibility and controllability
Responsibility accounting connects performance measures to a manager’s area of influence. Distinguish controllable operating decisions from imposed allocations or external changes. A useful assessment may report both total profitability and controllable performance, explaining their different purposes rather than attributing every result to one manager.
Worked example: A branch manager reduces controllable expenses by 800, but a head-office allocation rises by 1,200. Report the operating saving separately from the allocation increase.
Mistake to avoid: Blaming the branch manager for an allocation they could not influence.
Reference: Practice information handbook | ACCA Global
Business arrangements, ethics and controls
27. The business entity boundary
Accounting separates business transactions from an owner’s personal transactions, even where the legal structure does not create a separate legal person. Legal personality, liability and reporting obligations depend on the chosen structure and jurisdiction. Establish the accounting boundary without inferring legal protection from separate records.
Worked example: An owner pays a 90 personal restaurant bill from the business account. Record it as an owner withdrawal, rather than a business operating expense.
Mistake to avoid: Assuming separate accounting records establish limited legal liability.
Reference: Practice information handbook | ACCA Global
28. Clear agreement terms
Commercial agreements should make the parties, deliverables, price, timing and acceptance conditions identifiable. Accountants use those terms to interpret invoices, commitments and performance. Ambiguity can create accounting uncertainty, but legal enforceability requires the relevant jurisdiction’s rules rather than an accounting assumption.
Worked example: An order says 2,400 covers installation and maintenance. Obtain the allocation and delivery terms before deciding how much relates to completed installation.
Mistake to avoid: Assuming the invoice total explains every obligation in the agreement.
Reference: Practice information handbook | ACCA Global
29. Delegated authority
An internal authority policy specifies who may approve particular transactions and within what limits. Approval to negotiate, approval to order and approval to pay can be different responsibilities. Check both the scope and limit of a delegation; internal permission alone does not resolve every legal question about authority.
Worked example: A supervisor may approve purchases up to 500. A 650 order needs the designated higher approval, even if the supplier is already approved.
Mistake to avoid: Splitting one purchase into smaller orders to bypass an approval limit.
Reference: Practice information handbook | ACCA Global
30. Conflicts of interest and objectivity
A conflict arises when a personal or competing interest could impair professional judgment. Identify and disclose relevant interests through the appropriate process, then assess safeguards such as independent review or reassignment. Disclosure is a starting point; it does not automatically make participation appropriate.
Worked example: An accountant evaluating bids discovers that one bidder is owned by a close relative. They disclose the relationship and seek an independent evaluation arrangement.
Mistake to avoid: Treating an undisclosed relationship as harmless because the quoted price appears competitive.
Reference: Practice information handbook | ACCA Global
31. Confidential information
Confidentiality requires protecting information obtained through professional work and considering whether a disclosure has proper authority or a relevant legal or professional basis. Access should follow a legitimate need. Removing names may be insufficient where other details still identify the person or business.
Worked example: A colleague requests a payroll file to plan office refreshments. Provide only the necessary headcount rather than names, salaries and bank details.
Mistake to avoid: Assuming everyone within the same organisation needs access to the same information.
Reference: Practice information handbook | ACCA Global
32. Integrity under reporting pressure
Integrity requires truthful representation and avoidance of knowingly misleading information. Pressure to improve results does not change the underlying transaction. Preserve supporting records, explain the appropriate treatment and use relevant escalation procedures when asked to make an unsupported entry.
Worked example: A manager asks for an undelivered 5,000 order to be recorded as completed sales. The accountant rejects the unsupported recognition and documents the issue.
Mistake to avoid: Treating a manager’s instruction as evidence that the accounting entry is justified.
Reference: Practice information handbook | ACCA Global
33. Competence and due care
Professional competence involves having the knowledge needed for the task; due care involves applying it diligently. Recognise when specialist input or current authoritative guidance is necessary. Familiarity with a similar transaction is not enough when the facts, accounting framework or jurisdiction differ.
Worked example: An accountant encounters an unfamiliar cross-border tax issue. They gather the facts and seek qualified guidance before recording a confident tax conclusion.
Mistake to avoid: Applying remembered domestic rules to a different jurisdiction without checking them.
Reference: Practice information handbook | ACCA Global
34. Segregation of duties
Separating authorisation, custody, recording and reconciliation reduces the opportunity for one person to both create and conceal an error or fraud. Small organisations may need compensating independent reviews where full separation is impractical. Controls should address the actual transaction process rather than merely assign different job titles.
Worked example: One employee prepares payments; another approves them against invoices; an independent reviewer checks the bank reconciliation.
Mistake to avoid: Allowing the same person to create suppliers, release payments and reconcile the account without review.
Reference: Practice information handbook | ACCA Global
Taxation principles and calculations
35. From accounting profit to a tax base
Accounting profit and taxable profit can differ because tax rules define their own inclusions, exclusions and deductions. A reconciliation starts with the specified accounting figure and applies supported adjustments. Actual adjustment rules depend on the jurisdiction and tax period; the example here uses explicit hypothetical rules.
Worked example: Accounting profit is 30,000. If a 2,000 expense is non-deductible and a separate 500 deduction is permitted, taxable profit is 31,500.
Mistake to avoid: Applying a tax rate directly to accounting profit without considering required adjustments.
Reference: Practice information handbook | ACCA Global
36. Tax deductions and tax credits
A deduction reduces the amount subject to tax; a credit reduces the calculated tax itself, subject to the relevant rules. Their monetary effects differ. For a proportional tax, a deduction’s tax saving equals the deduction multiplied by the rate, assuming it can be used fully.
Worked example: At a hypothetical 20% rate, a 1,000 deduction saves 200. A fully usable 1,000 credit reduces calculated tax by 1,000.
Mistake to avoid: Treating a deduction as an equal reduction in the tax bill.
Reference: Practice information handbook | ACCA Global
37. Progressive tax bands
In a banded progressive system, each rate applies to the portion of the tax base falling within its band. Crossing a boundary does not ordinarily apply the higher rate to every earlier portion. Read any allowances and special rules separately; this example illustrates invented bands only.
Worked example: With the first 10,000 taxed at 10% and the next 5,000 at 20%, tax on 15,000 is 1,000 plus 1,000, or 2,000.
Mistake to avoid: Applying the highest reached band rate to the whole tax base.
Reference: Practice information handbook | ACCA Global
38. Marginal and effective tax rates
The marginal rate concerns the tax effect of an additional amount; the effective rate compares total tax with a stated income or tax-base measure. Specify the denominator, because different definitions produce different comparisons. Allowance withdrawals and other rules can complicate the marginal effect in actual systems.
Worked example: Under the preceding hypothetical bands, tax of 2,000 on 15,000 gives an effective rate of 13.33%. An additional 100 in the 20% band adds 20 tax.
Mistake to avoid: Using the effective rate to estimate the tax on extra income without checking its treatment.
Reference: Practice information handbook | ACCA Global
39. Transaction tax and recoverable inputs
Some transaction tax systems offset eligible input tax against output tax collected on sales. Recovery depends on the system’s registration, documentation and transaction rules. Separate tax from the underlying sale or purchase when that treatment applies; do not assume every business expense carries recoverable tax.
Worked example: In a hypothetical fully creditable system, output tax of 600 less eligible input tax of 250 leaves 350 payable.
Mistake to avoid: Deducting all tax paid on purchases without checking whether recovery is permitted.
Reference: Practice information handbook | ACCA Global
40. Withholding and final liability
Withholding is an amount retained from a payment and remitted under the applicable tax rules. It may be a credit against a later liability or a final tax, depending on the system. Identify whose tax is being collected and how the amount affects the payment recipient’s records.
Worked example: If a 1,000 fee has 100 creditable withholding, the recipient receives 900 cash and records a 100 tax credit alongside the 1,000 fee.
Mistake to avoid: Assuming a withheld amount always reduces the underlying revenue to the cash received.
Reference: Practice information handbook | ACCA Global
41. Temporary and permanent tax differences
Some differences between accounting and tax treatment reverse in later periods; others never reverse. This distinction helps explain why current taxable profit differs from accounting profit. Any deferred tax recognition and measurement must follow the applicable reporting framework rather than an assumed universal calculation.
Worked example: An expense recognised now but deductible next year creates a timing difference. An expense that is never deductible creates a permanent difference.
Mistake to avoid: Expecting every non-deductible accounting expense to become deductible later.
Reference: Practice information handbook | ACCA Global
42. Reconciling tax payable
A tax payable reconciliation distinguishes the assessed or estimated liability from amounts already paid or credited. Match payments to the relevant period and investigate differences between records and statements. A payment on account usually settles or reduces a balance; it does not establish the final tax expense.
Worked example: A hypothetical annual liability is 4,800, with 3,000 paid on account and 500 creditable withholding. The remaining balance is 1,300.
Mistake to avoid: Recording every tax payment as a new expense instead of checking the related liability.
Reference: Practice information handbook | ACCA Global
Audit evidence and assurance
43. Reasonable and limited assurance
An assurance engagement evaluates subject matter against suitable criteria and communicates a conclusion. Reasonable assurance involves reducing engagement risk to an acceptably low level; limited assurance involves less extensive work and a lower assurance level. Neither promises that every error has been discovered, and neither is simply a guarantee.
Worked example: Checking selected financial records to support an audit conclusion provides assurance about the statements, rather than certifying every transaction individually.
Mistake to avoid: Interpreting an assurance conclusion as proof that no fraud or error exists.
Reference: Practice information handbook | ACCA Global
44. Materiality and qualitative significance
Materiality considers whether a misstatement could influence users’ decisions, individually or with others. Size matters, but nature and circumstances also matter. There is no universal percentage suitable for every engagement. Consider both the financial amount and whether the item changes an important interpretation.
Worked example: A small misstatement that changes a reported loss into a profit may deserve attention even when its amount appears modest.
Mistake to avoid: Ignoring an item solely because it falls below an assumed numerical cutoff.
Reference: Practice information handbook | ACCA Global
45. Audit risk and planned procedures
Audit risk concerns an inappropriate audit opinion when financial statements are materially misstated. Risk assessment considers susceptibility to misstatement and the effectiveness of relevant controls. When assessed risk rises, planned procedures generally need stronger evidence; a diagnostic model does not eliminate professional judgment.
Worked example: Rapidly changing inventory and weak count controls lead an auditor to plan more persuasive inventory testing and closer attention to valuation.
Mistake to avoid: Assuming a low-risk label removes the need for audit evidence.
Reference: Practice information handbook | ACCA Global
46. Assertions and testing direction
Assertions identify what could be wrong with recorded information, including existence, completeness, valuation and cut-off. Testing direction matters. Starting from records and checking underlying support often addresses occurrence or existence; starting from source evidence and tracing into records often addresses completeness.
Worked example: Tracing goods received before year-end into purchase records helps identify omitted purchases. Inspecting recorded purchases back to invoices addresses a different concern.
Mistake to avoid: Using one testing direction and claiming it establishes every assertion.
Reference: Practice information handbook | ACCA Global
47. Sufficient and appropriate evidence
Sufficiency concerns the quantity of evidence; appropriateness concerns relevance and reliability. More weak evidence does not automatically compensate for poor quality. Evidence reliability depends on its source, how it was obtained and relevant controls, so evaluate those conditions rather than applying an absolute ranking.
Worked example: An independently obtained bank confirmation directly supports a bank balance. A manager’s verbal assurance alone provides much weaker support for the same balance.
Mistake to avoid: Counting documents without checking whether they address the assertion being tested.
Reference: Practice information handbook | ACCA Global
48. Control tests and substantive procedures
A test of controls examines whether a control operated effectively. A substantive procedure examines transactions, balances or disclosures for misstatement. The same document may contribute to either purpose, but the objective and evaluation differ. A functioning approval process does not alone establish that the recorded amount is correct.
Worked example: Checking an invoice for required approval tests a control. Recalculating its quantities and prices substantively tests the recorded value.
Mistake to avoid: Treating an approval signature as sufficient evidence of arithmetic accuracy.
Reference: Practice information handbook | ACCA Global
49. Sampling and the population
Audit sampling examines less than the whole relevant population to support a conclusion about that population. Define the population, sampling unit and objective before selection. Selecting only convenient or familiar items can introduce bias. Testing a particular high-value item may be useful without constituting a representative sample.
Worked example: For purchase completeness, sampling only recorded invoices cannot reveal goods-received records whose invoices were never entered.
Mistake to avoid: Drawing a completeness conclusion from a population that excludes potentially missing transactions.
Reference: Practice information handbook | ACCA Global
50. Misstatement versus missing evidence
A known material misstatement differs from an inability to obtain sufficient appropriate evidence. Reporting implications depend on the issue’s materiality and how widespread its effects are, under the applicable standards. Evaluate the nature of the problem before considering the form of any modified conclusion.
Worked example: Evidence proving inventory is overstated identifies a misstatement. Inaccessible inventory records instead create an evidence limitation whose possible effects require assessment.
Mistake to avoid: Treating missing evidence as proof that the balance is wrong.
Reference: Practice information handbook | ACCA Global
Finance, cash flow and report interpretation
51. Working capital and liquidity ratios
Working capital equals current assets minus current liabilities. The current ratio divides current assets by current liabilities, while a common quick ratio excludes inventory from current assets. These indicators require context: slow collections and obsolete inventory can weaken liquidity despite apparently comfortable ratios.
Worked example: Current assets of 18,000, including 6,000 inventory, and current liabilities of 9,000 give working capital of 9,000, a current ratio of 2 and quick ratio of 1.33.
Mistake to avoid: Assuming a favourable ratio guarantees that obligations can be paid on time.
Reference: Practice information handbook | ACCA Global
52. The cash operating cycle
The cash operating cycle estimates how long cash is tied up between paying suppliers and collecting from customers. A common calculation adds inventory days and receivable days, then subtracts payable days. Use consistent periods and appropriate average balances when deriving the component measures.
Worked example: Inventory stays 40 days, customers pay after 30 days and suppliers are paid after 25 days. The cash operating cycle is 45 days.
Mistake to avoid: Adding payable days even though supplier credit postpones the cash outflow.
Reference: Practice information handbook | ACCA Global
53. Credit policy and collection trade-offs
Offering credit may increase sales but also ties up cash and creates collection risk. Evaluate additional contribution against expected credit losses, financing costs and administration. Revenue growth alone does not establish that a looser credit policy is worthwhile, especially when collection assumptions are uncertain.
Worked example: A proposed policy adds 4,000 contribution but creates 1,200 expected credit losses and 800 financing costs. Its estimated net benefit is 2,000 before other effects.
Mistake to avoid: Comparing extra revenue with credit costs while ignoring the cost of producing those sales.
Reference: Practice information handbook | ACCA Global
54. Compounding and present value
Compound interest earns interest on both principal and accumulated interest. Future value equals present value multiplied by one plus the periodic rate raised to the number of periods. Discounting reverses that calculation. Match the rate’s period to the timing of the cash flows.
Worked example: At 5% annually, 1,000 becomes 1,102.50 after two years. Conversely, 1,102.50 due in two years has a present value of 1,000 at that rate.
Mistake to avoid: Using a monthly period count with an annual rate without conversion.
Reference: Practice information handbook | ACCA Global
55. Net present value
Net present value adds discounted relevant future cash flows and subtracts the initial investment. A positive result indicates value above the return represented by the discount rate, given the assumptions. Include opportunity costs and relevant timing effects, while excluding non-cash charges unless they affect cash flows.
Worked example: Paying 1,000 now to receive 1,210 in two years gives NPV of zero at 10%: 1,210 divided by 1.10 squared equals 1,000.
Mistake to avoid: Discounting accounting profit instead of the project’s relevant cash flows.
Reference: Practice information handbook | ACCA Global
56. Debt, equity and funding maturity
Debt creates contractual payment obligations; equity generally provides a residual ownership interest with different claims and control implications. Financing decisions must consider affordability, risk and timing. Long-lived assets funded by repeatedly renewed short-term borrowing can expose a business to refinancing pressure.
Worked example: A five-year machine financed by a loan repayable in six months creates a timing mismatch unless the business has a credible repayment or refinancing plan.
Mistake to avoid: Choosing finance solely by its initial rate while ignoring repayment timing.
Reference: Practice information handbook | ACCA Global
57. A cash budget
A cash budget forecasts receipts, payments and resulting balances by period. It uses expected cash timing, rather than simply copying budgeted revenue and expenses. Include borrowing and repayments explicitly, and separate the balance before financing from the balance after financing.
Worked example: Opening cash of 2,000 plus receipts of 6,000 less payments of 9,000 gives a 1,000 shortfall. Borrowing 1,500 produces closing cash of 500.
Mistake to avoid: Including depreciation as a cash payment.
Reference: Practice information handbook | ACCA Global
58. Operating, investing and financing cash flows
Cash flow reporting distinguishes operating activity from investment in long-term resources and transactions that change financing. Classification follows the applicable reporting framework, including its treatment of interest and dividends. Separate a transaction’s principal components rather than classifying all related payments from a single label.
Worked example: Cash from ordinary customer sales is operating; buying equipment is investing; receiving the principal of a new borrowing is financing.
Mistake to avoid: Classifying equipment purchases as operating payments merely because the equipment supports operations.
Reference: Practice information handbook | ACCA Global
59. Gross and operating profit margins
Gross margin divides gross profit by revenue; operating margin divides operating profit by revenue. They describe different stages of performance. A higher gross margin can coexist with a lower operating margin when operating expenses rise. State the profit measure and use consistent definitions across comparisons.
Worked example: Revenue of 100,000 and cost of sales of 65,000 give a 35% gross margin. After 25,000 operating expenses, operating margin is 10%.
Mistake to avoid: Dividing gross profit by cost of sales and labelling the result gross margin.
Reference: Practice information handbook | ACCA Global
60. Interpreting ratios in context
Ratios summarise relationships but require comparable accounting policies, business models and periods. Seasonality, unusual transactions and estimation changes can distort comparisons. Investigate the underlying amounts and cash effects before concluding that a movement represents stronger or weaker performance.
Worked example: Two retailers report equal current ratios, but one holds rapidly selling stock while the other holds obsolete goods. Their practical liquidity differs despite the matching ratio.
Mistake to avoid: Ranking businesses from one ratio without examining what their balances contain.
Reference: Practice information handbook | ACCA Global
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