CIMA BA3 common mistakes
CIMA BA3 · Understand the traps and how to avoid them.
Treating a payment received from a credit customer as income and crediting the sales account, instead of debiting cash and crediting the receivables ledger control account.
The candidate reasons from the cash flow ('money came in, so it must be revenue') rather than from the dual effect on assets and liabilities, so they never apply the receivables reduction that a settlement represents.
What to do instead
Before writing any entry, state the two accounts affected and their direction: cash up (debit), receivable down (credit). Practise a fixed set of recurring transactions (cash sale, credit sale, receipt from customer, payment to supplier, contra) until the debit/credit pattern is automatic, then test yourself by writing the double entry first and the narrative second.
Balancing off a trial balance that does not agree by inserting the difference into a suspense account and then leaving it there, rather than correcting the underlying errors.
The suspense account is learned as a balancing device, so candidates treat agreement of the trial balance as the objective rather than as evidence that the ledger is internally consistent.
What to do instead
Learn which errors a trial balance cannot detect (error of principle, complete reversal, compensating errors, original entry, omission) and which it can (single-sided entry, transposition, addition). For every suspense question, identify the specific error, write the correcting journal, and show the suspense account clearing to nil.
Posting the bank statement balance as the cash book balance in a bank reconciliation, or adding unpresented cheques and subtracting uncleared deposits in the wrong direction.
The candidate memorises a sequence of adjustments without anchoring them to whose records are being corrected, so the direction of each item is guessed.
What to do instead
Anchor on one question: does this item already appear in the cash book? If yes, adjust the cash book (bank charges, standing orders, dishonoured cheques, errors). If no, adjust the statement side (unpresented cheques, lodgements not yet credited). Rebuild the reconciliation from the closing cash book balance to the statement balance and check the direction of each line.
Recording an item in the correct class of account but the wrong specific account, for example debiting motor expenses for the purchase of a delivery van, and failing to spot it.
The candidate classifies by the nature of the payment (a cost incurred) rather than by the nature of the resource acquired (a non-current asset), which is exactly the error of principle the examiner tests.
What to do instead
Apply a capital-versus-revenue test to every purchase: will the benefit last beyond one accounting period and is it used to earn revenue? If yes, capitalise. Drill paired examples (van purchase versus van repairs, building extension versus repainting) and state the correction journal for each.
Preparing the statement of financial position from the trial balance without first processing the year-end adjustments, so depreciation, accruals, prepayments and closing inventory are omitted or double-counted.
Candidates treat the trial balance as final because it balances, and under time pressure they start writing the statement before completing the adjustments.
What to do instead
Always work adjustments through the extended trial balance first, then transfer the adjusted figures. Keep a checklist in a fixed order: closing inventory, depreciation, accruals, prepayments, irrecoverable debts, then totals. Cross-check that every adjustment appears twice (once in profit or loss, once in the statement of financial position).
Calculating depreciation on the carrying amount without deducting residual value, or applying the straight-line rate to the revalued amount in the year of revaluation without splitting the charge.
The formulas are recalled as single-line rules and the candidate does not check which base each method requires, particularly after a revaluation or a mid-year acquisition.
What to do instead
Write the method definition before substituting numbers. Straight line: (cost or valuation minus residual value) divided by useful life, pro-rated for part years. Reducing balance: carrying amount times rate. For revaluations, depreciate the pre-revaluation period on the old base and the remainder on the new carrying amount, and remember the revaluation surplus goes to other comprehensive income, not profit or loss.
Reconciling the payables ledger control account to the purchase ledger by adjusting the control account for every difference found, rather than deciding which record is wrong.
Candidates assume the control account is always the correct record and the individual ledger is wrong, or they adjust both, so the reconciliation never balances coherently.
What to do instead
For each difference, decide on evidence which record is in error: an omitted invoice from the control account, a misposting within the ledger, a contra not entered, or a casting error. Adjust only the incorrect record, then prove the two totals agree. Practise with a full set of five or six differences and show the adjusted control account total and the adjusted ledger total meeting at one figure.
Producing a statement of cash flows that starts from profit before tax and then omits or mis-signs working capital movements, or classifies interest paid and dividends as operating when the chosen policy says otherwise.
The indirect method is learned as a list of adjustments without a conceptual link to why an increase in receivables reduces cash, so signs are applied by memory and reversed under pressure.
What to do instead
Derive each working capital line from the movement in the statement of financial position and reason it out: receivables up means sales not yet collected, so deduct. Interest paid and dividends paid are normally financing or servicing outflows under the permitted presentation; state the policy you are applying. Reconcile the final figure to the movement in cash and cash equivalents as a hard check.
Calculating a ratio such as gross profit margin or inventory turnover and then giving no interpretation, or interpreting it without reference to the prior year or a comparator.
Candidates treat ratio questions as arithmetic and stop when a number appears, because they do not recognise that the marks are awarded for the comment on what the number means.
What to do instead
For every ratio, write three things: the formula with the figures substituted, the result, and one sentence on cause and consequence (for example, margin fell because of discounting or higher purchase costs, which reduces profit per unit of sales). Always compare with the prior period or an industry benchmark and state a possible reason and a limitation of the comparison.
Ignoring the date on a transaction when preparing final accounts, so a purchase invoice received before the year end but relating to the next period is recorded as a payable, or a sale made before the year end but invoiced after is omitted.
Candidates record transactions by when the document was received rather than by when the obligation or entitlement arose, and they do not apply the accruals concept to cut-off.
What to do instead
Apply the accruals concept explicitly: recognise income and expenses in the period to which they relate, not when cash or paperwork moves. At each year end, test cut-off by reviewing the last week of sales and purchases, and record goods received not invoiced and goods sold not invoiced as adjustments. State the concept you are applying in the answer to secure the marks.