DECOFI (UEMOA / OEC-CI) common mistakes
DECOFI (UEMOA / OEC-CI) · Understand the traps and how to avoid them.
Recording a finance-lease or a sale-and-leaseback transaction by following the client's legal form (asset off balance sheet, rentals expensed) instead of testing whether the risks and rewards of ownership have transferred.
Candidates memorise the SYSCOHADA revised balance-sheet captions but never drill the substance-over-form test, so they default to the treatment the client already applied and simply copy the trial balance.
What to do instead
Before any lease entry, run a written three-step test: transfer of ownership at term, bargain purchase option, lease term covering the major part of useful life. State the conclusion in one sentence in the working paper, then post the asset and the debt if the test is met.
Forgetting that SYSCOHADA revised abolished the 'charges immobilisées' / deferred-cost asset and requires them to be expensed or reclassified, and still presenting them as an intangible asset in the balance sheet.
Many candidates studied under the pre-2017 plan or learned from older textbooks and question banks, and the revised plan's removal of a single caption is easy to overlook because the rest of the balance sheet looks familiar.
What to do instead
Maintain a one-page 'what changed in SYSCOHADA révisé' sheet (deferred charges, amortisation of premiums, new captions such as 12x, revised cash-flow statement) and re-read it in the week before the exam; on any balance-sheet question, check the caption against that sheet before accepting it.
Computing the break-even point and the margin of safety using total fixed costs divided by the unit contribution margin, but ignoring that the mix of products changed or that some fixed costs are step-fixed, and then presenting a single figure with no caveats.
Candidates practise the formula in isolation on single-product cases and then mechanically apply it to multi-product scenarios, where the weighted contribution margin must be recomputed for the actual mix.
What to do instead
For every break-even question, first write the assumed sales mix as a percentage line, compute the weighted contribution margin per unit, and add a sensitivity sentence stating what happens if the mix shifts by 10 points.
Treating all overhead as product cost in a full-costing exercise and then using the resulting unit cost to make a short-term accept/reject decision on a special order.
Full costing is the method most heavily taught and most heavily examined, so candidates reach for it automatically and forget that fixed overhead is irrelevant to a decision that does not change it.
What to do instead
When a question contains the words 'special order', 'spare capacity' or 'short term', switch explicitly to relevant costing: list only future incremental cash flows, exclude allocated fixed overhead, and show the opportunity cost line if capacity is constrained.
Writing 'the control is satisfactory' in the audit file without describing the test performed, the sample size, the population and the exceptions found.
Candidates conflate the conclusion with the evidence; in exam conditions they run out of time and compress the documentation rather than the analysis, so the reasoning disappears and only the verdict remains.
What to do instead
Use a fixed four-line template for every control conclusion: population and period, sample size and selection basis, exceptions found, conclusion and effect on the audit approach. Practise writing it until it takes under two minutes.
Assessing inherent risk and control risk as 'low' across the board and then setting a high detection risk, which produces an under-audited engagement with too few substantive procedures.
The audit risk model is learned as a formula, not as a judgement exercise, and candidates fear that flagging high risk will make their answer look as if the client is dishonest or that they will run out of time.
What to do instead
For each significant account, force yourself to name one specific fraud or error scenario that could occur and one reason the control might fail. If you cannot name a scenario, the risk is genuinely low; if you can, the assessment must be at least moderate.
Applying the standard VAT rate and the wrong territoriality rule to a service supplied by a non-resident provider, or deducting VAT on an invoice that lacks the mandatory mentions, without flagging the deduction risk.
Candidates memorise rates but not the conditions of deductibility and the reverse-charge mechanism, and exam questions often bury the decisive fact (place of supply, invoice content) in a single line of the scenario.
What to do instead
For every VAT question, answer in three ordered steps: is the operation in the field of VAT, where is it taxed (territoriality), and is the invoice compliant enough to deduct. Write the three headings on your answer sheet before starting to compute.
Confusing the OHADA company forms on governance points - for example who appoints the statutory auditor in a SAS versus an SA, or the capital and partner-liability rules of the SARL - and answering from general French company-law intuition.
The AUSCGIE has been revised and the SAS regime is recent, while most candidates' intuition comes from the SA/SARL dichotomy they know best; the differences look minor but carry the marks.
What to do instead
Build a comparison grid of SA, SARL, SAS and SNC on six rows: minimum capital, liability of partners, appointment of the commissaire aux comptes, decision thresholds, transfer of shares, and management. Memorise the grid, not prose.
Discounting a project's cash flows at the nominal cost of capital while the cash flows themselves are stated in constant (real) prices, or using the accounting profit instead of free cash flow in the NPV.
Candidates focus on the discounting arithmetic and treat the construction of the cash-flow line as trivial, so consistency between the price basis and the rate, and the exclusion of depreciation and finance costs, is never checked.
What to do instead
Adopt a fixed order for every valuation: build the free cash flow from EBIT after tax plus depreciation minus capex minus change in working capital, exclude interest, then state explicitly 'nominal flows discounted at nominal WACC' or the reverse. Write that sentence in the answer.
Quoting a portfolio's performance or a security's expected return without stating whether the figure is before or after tax and fees, and mixing arithmetic and geometric averages when comparing periods.
Return calculations are treated as pure arithmetic, and the reporting conventions that make a figure meaningful are seen as presentation detail rather than part of the answer.
What to do instead
End every performance calculation with a one-line label: basis (gross/net), period, currency and averaging method. When comparing over several periods, use the geometric mean and say so.
Diagnosing a company from a single ratio - for example declaring it 'healthy' because the current ratio exceeds 1 - without checking the quality of receivables, the ageing of inventory and the cash conversion cycle.
Ratio formulas are easy to recall and give a satisfying number, so candidates stop at the computation and never move to the interpretation the question actually asks for.
What to do instead
For every ratio, write one sentence on what it measures, one on what would make it misleading in this specific file, and only then a conclusion. If the case gives ageing schedules or payment terms, the cycle must be computed.
Accepting an engagement or continuing with a client without documenting independence - cross-shareholdings, family links, fee dependence on a single client, or long association of the signing partner - and treating independence as a box on a form.
Independence is taught as a list of prohibitions and candidates do not practise applying it to a fact pattern, so a scenario containing a hidden link is read as background rather than as the point of the question.
What to do instead
When a case describes the client's shareholders, management or fee structure, underline every name and amount and ask three questions: financial interest, personal relationship, fee dependence. Answer each explicitly before giving the ethical conclusion.
Designing an information-system or governance recommendation that describes the target state but omits segregation of duties, the approval workflow and the reconciliation control that would actually prevent the fraud described in the case.
Candidates answer governance questions with generic best-practice language ('strengthen internal control', 'improve reporting') because they have not been trained to convert a specific risk into a specific control.
What to do instead
Use the risk-control matrix format: one row per identified risk, columns for the control, who performs it, who approves it, the evidence produced and the frequency. A recommendation without a named control owner and evidence is not a recommendation.