ACCA ATX common mistakes
ACCA ATX · Understand the traps and how to avoid them.
Answering a compliance requirement by giving only the tax computation and omitting the filing date, payment date, interest/penalty exposure and appeal route.
Candidates revise computational mechanics and treat administration as background, so under exam pressure they default to numbers.
What to do instead
Before writing, add a one-line compliance checklist: trigger date, filing deadline, payment deadline, penalty/interest regime and review/appeal option; apply each to the client's dates.
Calculating NIC on all remuneration using Class 1 rates, without separating salary, benefits, employer pension contributions and termination payments.
Class 1, Class 1A, Class 1B and secondary thresholds are learned in isolation and candidates do not build a by-category table.
What to do instead
Draw a four-row table (cash earnings, taxable benefits, employer pension, termination) and assign the correct class, threshold and reporting obligation before computing.
Computing CGT without testing the annual exempt amount, BADR, gift relief, rollover relief or the share identification rules appropriate to the scenario.
Reliefs are covered as separate topics; candidates calculate gains in a linear way and stop when they reach a taxable figure.
What to do instead
After the raw gain, run a relief checklist in a fixed order: AEA, exemptions, BADR eligibility, gift/rollover, losses, then rate; write one line for each relief considered.
Listing lifetime IHT transfers in the order they appear in the question rather than in chronological order, and applying the annual exemption to the wrong transfer.
Candidates focus on the value of each gift and forget that the nil rate band is consumed cumulatively over seven years.
What to do instead
Build a dated timeline of every transfer, apply annual exemptions to the earliest transfer first, carry forward any unused amount, and show the cumulative NRB used before each chargeable transfer.
Applying BPR or APR at 100% to all business or agricultural property and then also deducting the full nil rate band, without checking the two-year ownership period, excepted assets or the interaction with transferable NRB.
Reliefs are memorised as headline percentages; candidates do not test eligibility conditions on the specific assets.
What to do instead
For each asset, state the relief rate, ownership period and whether it qualifies (trading vs investment, excepted assets), then apply NRB to the net chargeable estate and show the transferable NRB calculation separately.
Computing corporation tax on the accounting profit without adding back disallowables such as depreciation, entertaining and fines, claiming capital allowances, or considering loss relief and group relief options.
Candidates treat the profit figure as final and forget the statutory adjustments and relief choices that ATX rewards.
What to do instead
Use a standard proforma: accounting profit, add back disallowables, deduct capital allowances, adjust for chargeable gains, then evaluate loss and group relief options and state the chosen relief with reasons.
Advising on VAT registration or a property transaction without considering partial exemption, the option to tax, place of supply, reverse charge or the capital goods scheme.
VAT is studied as a single-rate tax; candidates apply the standard rate to the transaction and miss the special regimes.
What to do instead
Run a VAT decision tree: taxable supplies, registration threshold, place of supply, exemption or option to tax, partial exemption recovery and special scheme; state each conclusion explicitly.
Ignoring residence, domicile and remittance status when advising an individual with overseas income or gains, and failing to claim double tax relief or consider a permanent establishment for a company.
Overseas aspects feel abstract; candidates default to UK-source rules and forget treaty and relief mechanics.
What to do instead
Open with a status paragraph (resident/non-resident, domicile/deemed domicile, remittance basis), then map each item of income or gain to source, treaty relief and DTR; for companies test PE and transfer pricing.
Describing a tax planning idea without identifying the ethical threats (self-interest, advocacy, intimidation) or safeguards, and without a recommendation.
Ethics is treated as a separate knowledge area rather than integrated into advice.
What to do instead
Use a three-step ethics paragraph: identify the threat, apply the relevant code principle (integrity, objectivity, competence, confidentiality, professional behaviour), state the safeguard and give a clear recommendation.
Recommending a tax-efficient structure based only on the tax saving, without evaluating commercial objectives, cash flow, anti-avoidance (GAAR/DOTAS) or the interaction of income tax, NIC, CGT and IHT.
Candidates treat tax minimisation as the goal and answer the calculation rather than the client's decision.
What to do instead
Frame the answer around the client's objectives, compare at least two options on tax, cash flow and risk, flag anti-avoidance and disclosure, and end with a justified recommendation.