CIMA BA2 Common Mistakes & Exam Technique
BA2 is calculation-heavy, and most errors are procedural — using the right method but the wrong figure, or forgetting which direction a variance should point.
1. Read whether the question wants a per-unit or a total figure
The high-low method, absorption rates, and variance calculations all require knowing whether your answer should be per unit or in total. Many errors come from correctly performing the calculation but reporting the wrong one of the two.
2. Favourable and adverse aren't just labels — check the direction
A variance is favourable when actual results are better than standard (lower cost, higher revenue) and adverse when worse. It's easy to calculate the numerical difference correctly but label the direction backwards, especially under time pressure.
3. EOQ has a specific structure — don't approximate it from memory
The economic order quantity formula is the square root of (2 x ordering cost x annual demand ÷ holding cost per unit per year). Forgetting the 2, forgetting the square root, or swapping ordering cost and holding cost in the formula are all common slips that produce a wrong but plausible-looking number.
4. Absorption and marginal costing profits reconcile in a specific direction
When inventory increases over a period, absorption costing profit is higher than marginal costing profit (because some fixed overhead is carried forward in closing inventory rather than expensed). Getting this reconciliation backwards is a frequent error.
5. A flexed budget, not the original fixed budget, is the right comparator for variances
Comparing actual results directly against the original fixed budget conflates volume effects with genuine cost/efficiency variances. The budget must be flexed to the actual activity level first, and only then compared with actual results.
Practise these in context: every BA2 question on GoQualified is mapped to the CIMA Certificate syllabus, with a full worked explanation so you can see exactly where the marks are. Switch to Exam Sim mode for a timed BA2 mock exam (60q / 120 mins) under real exam conditions. Free, no login.