Corporation Tax
The 15–30% area covering adjusted profits, capital allowances, gains, losses, groups, overseas activity and close companies.
How to study the ACA Professional Level
Use the current syllabus and exam resources, build technical depth by exam, then practise the written application, professional scepticism, ethics, sustainability, data and communication skills that ICAEW assesses.
Core concepts
Concept 1
Adjust accounting profit for tax and calculate capital allowances on plant, machinery, structures and buildings.
Exam cue: Identify the requirement, stakeholders, evidence and current ICAEW principle relevant to corporation tax.
Concept 2
Calculate company gains, reliefs, losses, taxable total profits and Corporation Tax for the relevant period.
Exam cue: Structure the analysis or calculation, challenge the data and connect each conclusion to the supplied scenario.
Concept 3
Analyse associated-company, group and loss-relief consequences and choose an effective use of losses.
Exam cue: Check ethics, professional scepticism, sustainability, communication and practical implementation before finalising.
Risk pitfalls and guardrails
Reciting corporation tax knowledge without applying it to the stated recipient and facts.
Guardrail: Do not use a former exam name, retired rule, unsupported assumption or generic framework dump that ignores the supplied evidence and recipient.
Using a former ACA exam label, retired learning outcome or superseded technical rule as if it were current.
Guardrail: Do not use a former exam name, retired rule, unsupported assumption or generic framework dump that ignores the supplied evidence and recipient.
Ignoring contradictory evidence, data limitations, ethical threats, sustainability effects or the requested professional skill.
Guardrail: Do not use a former exam name, retired rule, unsupported assumption or generic framework dump that ignores the supplied evidence and recipient.
Memory anchors
Corporation Tax - Scope
Adjust accounting profit for tax and calculate capital allowances on plant, machinery, structures and buildings.
Corporation Tax - Rule
Calculate company gains, reliefs, losses, taxable total profits and Corporation Tax for the relevant period.
Corporation Tax - Method
Analyse associated-company, group and loss-relief consequences and choose an effective use of losses.
Corporation Tax - Risk
Evaluate overseas branch, subsidiary and double-tax-relief effects in the supplied scenario.
Corporation Tax - Action
Identify close-company implications and connect the computation to filing, payment and planning advice.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A company has taxable total profits £300,000 and the main rate is 25%. Before reliefs, corporation tax is:
A standalone company has augmented profits £40,000 in a 12-month period. The 2025/26 small-profits rate is:
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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