Advanced Taxation (UK) · Mitigation of tax by numerical analysis and reasoned argument

Reasoned Argument and Presenting Tax Planning Advice in ACCA ATX

Updated 11 October 2026 · Fact-checked

Reasoned argument means recommending a course of action and justifying it. You quantify the tax saving, weigh it against commercial, cash flow, non-tax and ethical factors, state your assumptions, and reach a clear conclusion for the client. A number alone earns few marks. The reasoning and the recommendation earn the rest.

Understand Reasoned Argument and Presenting Tax Planning Advice

Tax planning questions in ATX rarely end with a calculation. They ask you to advise. The client wants to know what to do, not what the tax is. So your answer needs a number, a judgement and a recommendation.

Start with the client. Every scenario gives you objectives and constraints: a wish to keep control, a need for cash, a worry about risk, a plan to emigrate or retire. A recommendation that saves the most tax but ignores these is a poor answer. Tie each point back to what the client said.

Then separate three ideas. Tax avoidance is arranging affairs to reduce tax within the law and the intent of the legislation. Tax evasion is deliberately hiding or misstating information to pay less tax, which is illegal. Planning that follows the letter of the law but is artificial and against its purpose is risky. It may be challenged under the General Anti-Abuse Rule (GAAR) or fall under disclosure rules. You should recommend acceptable planning and flag the risk where a scheme looks aggressive.

Tax is only one factor. Weigh it against cash flow, timing of payments, legal and set-up costs, loss of control, effect on other taxes, the commercial purpose, and the client's risk appetite. A saving that needs the client to give away assets they may need is a real cost.

Finally, be explicit. State your assumptions, because the tax rates, allowances and supplementary instructions are given in the exam and you may need to assume facts the question leaves open. Compare the options, then conclude. Examiners reward a clear recommendation, even a cautious one, over a list of points with no decision.

Key rules to remember

Tax saving: Tax saving = Tax under current position − Tax under proposed position; Include all taxes affected (income tax, NIC, CGT, IHT, corporation tax, SDLT, VAT), not just the one in the headline.
Net benefit: Net benefit = Tax saving − costs of implementing − any extra tax or cash cost elsewhere; Use this to test whether a plan is worth doing. Costs include professional fees and lost income.
Answer structure: Recommendation → Calculation → Reasoning for and against → Non-tax factors → Assumptions → Conclusion; A reliable order for a client-facing answer. Keep each part short.
Avoidance vs evasion: Avoidance = legal planning within the law's intent; Evasion = illegal, deliberate concealment or misstatement; Artificial arrangements against the intent of the law risk challenge. Evasion must never be assisted.
Official rounding rules: Work to the nearest £; apportion to the nearest month; show all workings; These supplementary instructions are reproduced in the exam.

How to solve Reasoned Argument and Presenting Tax Planning Advice questions

Use this method for any advice or planning requirement. It keeps your answer balanced and client-focused.

1Read the requirement and note the verb (advise, evaluate, recommend, discuss) and who you are writing to.
2Underline the client's objectives and constraints in the scenario, such as cash needs, control, risk and timing.
3Identify every tax affected by each option, not just the obvious one.
4Calculate the tax under each option using the rates and allowances given. Show workings and state assumptions.
5Compare the results and then weigh them against commercial, cash flow, non-tax and ethical factors.
6Flag any avoidance or compliance risk, for example artificial steps or incomplete disclosure, and say what you would do about it.
7State a clear recommendation and a short conclusion linked to the client's objectives.
8Check tone and layout: address the client's concern, use short paragraphs and headings, and keep the language plain.

Quickest way: Option, number, judgement, decision

When to use it: When time is short and you must still produce balanced advice worth professional skills marks.

Write the recommendation in one sentence at the top.
Give the key tax figures for each option in a small list, with the saving.
Add two or three bullets for the main non-tax factors, each tied to the client's facts.
Add one bullet on risk or ethics if relevant.
Close with the assumptions and a one-line conclusion.

Common mistakes in Reasoned Argument and Presenting Tax Planning Advice

Giving the calculation but no recommendation.
Students treat the numbers as the answer because they feel safe.
Fix: Always finish with a clear statement of what the client should do and why.
Ignoring the client's stated objectives.
Students rush to the tax saving and skim the scenario.
Fix: Underline objectives on first reading and refer to them by name in your conclusion.
Recommending the lowest tax option with no mention of cash flow, control or cost.
Tax is the exam topic, so other factors feel off-topic.
Fix: Add at least two relevant non-tax factors drawn from the scenario facts.
Confusing avoidance and evasion, or using vague wording about 'loopholes'.
The terms sound similar and students avoid explaining them.
Fix: Define each briefly. Recommend planning within the law's intent and say you could not assist with any concealment.
Writing generic bullet lists not applied to the scenario.
Students memorise standard advantages and disadvantages.
Fix: Use the client's names, figures and circumstances in every point.
Leaving assumptions unstated.
Students think assumptions look like weakness.
Fix: State them briefly. Examiners give credit for sensible assumptions where facts are missing.

Worked examples

Example 1

Priya, a sole trader, has taxable profit of £60,000 in 2025/26 and no other income. She asks whether making a £10,000 gross personal pension contribution is worthwhile. She may need the cash within three years. Ignore NIC and the personal allowance effects beyond the taxable profit figure given, and assume the £60,000 is taxable income after the personal allowance. Advise her.

Show the solution

Taxable income of £60,000 uses the basic rate band of £37,700 and then £22,300 at 40%.
A £10,000 gross contribution extends the basic rate band by £10,000 to £47,700, so £10,000 of income moves from 40% to 20%. Income taxed at 40% falls from £22,300 to £12,300.
Priya pays £8,000 to the pension provider. The provider claims basic rate relief of £2,000 at source, so £10,000 goes into the pension.
Extra higher rate relief is £10,000 × (40% − 20%) = £2,000, claimed through her self-assessment return.
Final net cost to Priya is £8,000 − £2,000 = £6,000 for a £10,000 pension pot, assuming she has enough annual allowance (assumed). Total tax relief is £4,000.
Non-tax factor: pension funds are generally inaccessible until normal minimum pension age, and we assume Priya is below it. If she needs the cash within three years, the saving may not outweigh the loss of access.
Recommendation: contribute only an amount she will not need, and keep enough accessible savings for the three-year need.

Answer: A £10,000 gross contribution costs Priya £8,000 at first, with £2,000 basic rate relief given at source. She then claims £2,000 of higher rate relief through self-assessment, so the final net cost is £6,000 for £10,000 in the pension. The saving is real, but the funds are generally inaccessible until normal minimum pension age, which we assume she has not reached. Priya should contribute only what she will not need within three years, assuming sufficient annual allowance.

Example 2

Tomas owns shares worth £50,000 that cost £20,000. His advisor suggests a complex arrangement that has no commercial purpose and exists only to turn the gain into a tax loss. Tomas asks for your view. Advise on the approach. Use the 2025/26 rates and assume a higher rate taxpayer with a full annual exempt amount.

Show the solution

Gain on a normal sale = £50,000 − £20,000 = £30,000.
Deduct annual exempt amount of £3,000 to give a taxable gain of £27,000.
As a higher rate taxpayer, CGT at 24% = £27,000 × 24% = £6,480.
The arrangement aims to remove the £6,480 CGT on this disposal. It may also seek to create a loss that could be used elsewhere, so £6,480 is the direct saving only. It has no commercial purpose and is designed only to produce a tax advantage.
Such an arrangement risks challenge by HMRC under the General Anti-Abuse Rule (GAAR) if it is abusive. The GAAR asks whether the arrangement cannot reasonably be regarded as a reasonable course of action (a double reasonableness test). It may also be disclosable under DOTAS if any of the hallmarks are met. If challenged, the tax advantage could be counteracted, and interest and costs could remove the saving.
Distinguish this from acceptable planning, such as using the annual exempt amount, spouse transfers or reliefs available by design.
Recommendation: do not proceed with the scheme. Consider using reliefs and allowances that Parliament intended, and phase disposals if sensible.

Answer: Tax on an ordinary sale is £6,480 (taxable gain £27,000 at 24%). This is the direct saving the arrangement aims for, and any loss it created might also be used elsewhere. It has no commercial purpose, so it risks challenge under the GAAR if it is abusive, and it may be disclosable under DOTAS if hallmarks are met. You should advise against it and recommend acceptable planning using available reliefs and allowances.

Exam tips

Spend the first minutes on the scenario: write the client's objectives in the margin and refer to them in your conclusion.
Always give a clear recommendation, even if it is conditional, and state any assumption it depends on.
Include at least one non-tax factor and one risk point per option, drawn from the scenario facts.
Use the given tax tables and supplementary instructions: nearest £, apportion to the nearest month, show workings.
Use professional tone and short headed sections, since professional skills marks reward clarity, scepticism and commercial awareness.

Practice questions from Mitigation of tax by numerical analysis and reasoned argument

Reasoned Argument and Presenting Tax Planning Advice: frequently asked questions

What is reasoned argument in ATX?

It is advice that explains why you recommend an option. You quantify the tax effect, weigh it against non-tax factors, state assumptions and reach a clear conclusion. Examiners reward the reasoning, not only the figures.

What is the difference between tax avoidance and tax evasion?

Tax avoidance is arranging affairs within the law to reduce tax. Tax evasion is illegal and involves deliberately hiding or misstating facts. Artificial arrangements that go against the intent of the law may be challenged even if they are not evasion.

How long should my advice be?

Match it to the marks available. Roughly one well-made point per mark is a good guide. Short, headed paragraphs beat long blocks of text.

Where can I find ATX guidance on exam technique?

ACCA publishes Student Accountant articles for ATX-UK, including guidance on answering Section A questions, exam technique and the use of the tax tables. Read these alongside your study material.