IMC common mistakes
IMC · Understand the traps and how to avoid them.
Treating the IMC as a maths test and spending most revision time on calculation drills (discounting, dividend discount models, duration) while barely reading the regulatory and ethics chapters.
Candidates come from a finance or CFA-adjacent background and assume quantitative content carries the marks, so they over-invest in formulas they already know and under-invest in the rules-based material where they are weakest.
What to do instead
Build a revision plan weighted to the syllabus, not to your comfort zone. Allocate at least half your study hours to regulation, ethics, and market-conduct topics, and cap calculation practice at the level of accuracy and speed needed, not mastery of derivations. Track hours per topic so the imbalance is visible.
Memorising the names of regulators and rulebooks without being able to say which body does what, who authorises whom, and which rules apply to which activity.
The regulatory landscape has several overlapping bodies (prudential regulator, conduct regulator, exchanges, and self-regulatory or industry bodies), and candidates learn them as a list of acronyms rather than as a set of distinct functions.
What to do instead
Make a one-page grid: body, statutory objective, who it regulates, and one example activity it oversees. For each body, write a single sentence in your own words about what would go wrong if it did not exist. Test yourself by covering the grid and reconstructing it from memory.
Applying the suitability and appropriateness tests interchangeably, or assuming a client-facing disclosure satisfies the advice standard.
The two tests sit close together in the rulebook and both involve client interaction, so candidates blur them under a generic heading of 'treating customers fairly'.
What to do instead
Write a side-by-side comparison: what triggers each test, what information must be gathered, what the firm must do with the result, and what the client outcome is. Then work through five short scenarios and label each as suitability, appropriateness, or neither, justifying the label in one line.
Confusing the roles of buy-side and sell-side participants, or mixing up primary and secondary market functions when answering questions about market structure.
Textbook descriptions of market participants overlap in day-to-day language, and candidates who work in one part of the industry read questions through their own job's lens.
What to do instead
Draw the trade lifecycle from issuance to settlement and place each participant on it: issuer, underwriter, exchange, market maker, broker, custodian, clearing house. For each, note who they owe duties to and how they earn revenue. Rehearse the diagram until you can reproduce it without notes.
Assuming a rising price or a high yield always means a better investment, without adjusting for risk, horizon, or the difference between income and total return.
Retail-facing intuition and headline performance figures encourage a return-first mindset, while the exam tests risk-adjusted reasoning and the relationship between price, yield, and expected return.
What to do instead
For every return figure you revise, force yourself to state the associated risk, the time horizon, and what would have to be true for the return to be realised. Practise converting between price and yield on a bond, and between capital growth and income on an equity, until the direction of each relationship is automatic.
Mixing up nominal and real returns, or gross and net returns, when answering performance questions.
Questions often supply several return figures and the candidate grabs the most prominent number without checking whether inflation, fees, or tax have already been deducted.
What to do instead
Before calculating, underline the words in the question that specify the basis required (nominal, real, gross, net, before or after charges). Do a set of conversions in both directions, and always sanity-check whether the answer is plausible relative to the inputs.
Treating the different asset classes as separate silos and failing to apply a consistent valuation framework across them.
Revision is often organised by product, so candidates learn equities, bonds, property, and derivatives in isolation and cannot transfer concepts such as discounting, risk premia, or liquidity when a question crosses categories.
What to do instead
Build a single comparison table with rows for cash flow pattern, key risk, valuation driver, liquidity, and typical role in a portfolio, and fill it for every asset class. Then answer cross-asset questions by reasoning from the table rather than from memorised facts.
Calculating portfolio risk by averaging individual asset risks, or ignoring the effect of correlation and diversification.
Simple averages feel intuitive and are quicker under time pressure, and candidates who have not internalised the variance formula default to arithmetic shortcuts.
What to do instead
Practise two-asset portfolio risk problems with correlations of plus one, zero, and minus one, and note how the result changes. Learn the qualitative rule that portfolio risk depends on covariances as well as individual volatilities, and check any answer against that rule before moving on.
Confusing the different order types and trading mechanisms, or misreading a question about best execution and market abuse.
Market microstructure vocabulary is dense, and several terms (limit, stop, market, iceberg) sound similar but behave very differently under specific price paths.
What to do instead
For each order type, write the instruction it gives, the price at which it executes, and the scenario in which it fails to execute. Then link each to the conduct rules: which behaviours around order handling and information use would constitute market abuse. Test with short scenario questions rather than definitions.
Leaving ethics and professional standards to the last week and revising them by reading rather than by applying them to scenarios.
Ethics feels like common sense, so candidates assume it needs no preparation, but exam questions test the specific standard, the correct escalation route, and the priority order when duties conflict.
What to do instead
Start ethics in week one and revisit weekly. For each standard, write three short scenarios: one clear breach, one borderline, one compliant, and state the deciding factor. Learn the escalation chain and the order of duties (client, firm, market) explicitly, and practise justifying an answer in one sentence.