ACCA Applied Skills · Taxation (UK)
Principal Sources of Revenue Law and Practice in TX-UK
UK tax law comes mainly from statute (Finance Acts and other legislation) and from court decisions that interpret it. HMRC practice, such as manuals and published guidance, shows how HMRC applies the law but is not law itself. You must also separate legal tax avoidance from illegal evasion, and know what the GAAR does.
What this chapter covers
This chapter explains where UK tax rules come from and how much weight each source carries. Statute is the primary source. Parliament passes it, usually each year in a Finance Act. Courts then interpret that wording, and their decisions set precedent. HMRC publishes its own views in manuals, statements and guidance. These show you how HMRC will behave, but they do not override the law.
The chapter also covers the line between tax avoidance and tax evasion. Avoidance means arranging your affairs to reduce tax within the law. Evasion means deliberately misleading HMRC, for example by hiding income, and it is a criminal matter. The General Anti-Abuse Rule (GAAR) sits at the edge of avoidance. It lets arrangements be counteracted when they are abusive.
This is a short, mostly theory chapter, but it frames the whole paper. Every income tax, capital gains tax, inheritance tax, corporation tax and VAT rule you learn later is statute. The exam examines the Finance Act 2025 for sittings from June 2026 to March 2027 and in June 2027. The exam also supplies the rates and allowances, so you do not memorise numbers here. You are tested on concepts and wording.
This chapter has little calculation, so it is some of the easiest ground to gain marks. Questions are usually objective test items, where an answer is marked all or nothing. They reward precise definitions, such as telling avoidance from evasion or knowing whether a source is binding. The same ideas also help in written answers. Tax planning advice in Section C should stay on the legal side of the line, and a clear understanding of the sources helps you explain why a rule applies.
Principal sources of revenue law and practice: topics in the order to study them
- 1Sources of UK Tax Law: Statute and Case LawStart here because everything else depends on knowing that statute is the primary source and that courts interpret it.
- 2HMRC Practice: Statements, Manuals and GuidanceStudy this second, since you can only judge HMRC's views once you know they sit below statute and case law in authority.
- 3Tax Avoidance, Tax Evasion and the GAARTake this last because it uses the earlier ideas: the law sets the limits, HMRC applies them, and the GAAR targets abuse of them.
How to prepare Principal sources of revenue law and practice
This is a light chapter. Aim to learn it once, properly, then revise it through short practice questions.
- Write a one-page ranking of sources: statute first, then case law interpreting it, then HMRC practice. Note which are binding and which only show HMRC's view.
- Learn the annual cycle: the Finance Act sets the rules for the exam, and ACCA names the Finance Act examined for each sitting (Finance Act 2025 for June 2026 to June 2027).
- Write your own definitions of avoidance and evasion in one sentence each. Test them on short examples, such as using a legal allowance versus leaving income off a return.
- Learn what the GAAR is for: counteracting tax advantages from abusive arrangements. Do not try to recall detailed section numbers.
- Do objective test questions on this chapter, and read the explanation for every wrong answer, because one word can change the answer.
- Before the exam, recite the ranking of sources and the avoidance versus evasion distinction from memory, then move on to the calculation chapters.
Common mistakes in Principal sources of revenue law and practice
Treating HMRC manuals or guidance as binding law
Fix: Remember that guidance shows HMRC's view and usual behaviour only. Statute and court decisions decide the law.
Confusing avoidance with evasion
Fix: Use the test: avoidance works within the law, while evasion involves deliberately misleading HMRC or hiding facts. Evasion is a crime.
Saying all tax planning is wrong or that the GAAR bans it
Fix: Using reliefs and allowances as Parliament intended is acceptable. The GAAR targets abusive arrangements, not ordinary planning.
Assuming case law is only background reading
Fix: Explain that courts interpret the wording of statute and their decisions guide how the law applies in later cases.
Quoting section numbers or case names from memory
Fix: Describe the rule in plain words. A wrong reference can lose a mark, while a correct explanation is enough.
Spending revision time on this chapter at the expense of calculations
Fix: Give it a short, focused session, then use the practice questions to confirm it and move on.
Last-day revision: Principal sources of revenue law and practice
- Statute is the primary source of UK tax law. It is mostly the Finance Act passed each year.
- Courts interpret statute, and their decisions set precedent that guides later cases.
- HMRC practice (manuals, statements, guidance) explains how HMRC applies the law. It is not law itself.
- If HMRC guidance conflicts with statute, statute prevails.
- TX-UK examines the Finance Act 2025 for sittings from June 2026 to March 2027 and in June 2027.
- Legislation that has not yet taken effect is not normally examined until it does.
- Tax avoidance is arranging affairs to reduce tax within the law.
- Tax evasion is deliberately misleading HMRC to reduce tax. It is illegal.
- The GAAR allows HMRC to counteract tax advantages arising from abusive arrangements.
- Rates and allowances are given in the exam, so concentrate on concepts and definitions here.
- Objective test questions are all or nothing, so read every option fully.
Principal sources of revenue law and practice practice questions
- A provision included in the Finance Act 2025 is due to take effect only at a date after the exam sitting. According to ACCA's examinable doc…
- Which one of the following is an example of tax evasion rather than tax avoidance?
- Which one of the following is the purpose of the General Anti-Abuse Rule (GAAR) in the UK?
- Ravi's tax return was filed late, so HMRC treated a payment of tax as underpaid by £6,000 for exactly one year. Using the rate of interest o…
- Which one of the following statements about tax avoidance and tax evasion is correct for UK tax purposes?
- The Finance Act 2025 received Royal Assent on which date, according to the TX-UK examinable documents?
- Exams in TX-UK falling in the period 1 June to 31 March generally examine the Finance Act passed in which year relative to the exam?
- In the case of Ramsay, the courts developed a principle for dealing with tax avoidance schemes. Which statement best describes how the court…
Principal sources of revenue law and practice in other exams
The same ground in other exams, if you are preparing for more than one or want another angle on it.
Principal sources of revenue law and practice: frequently asked questions
What are the main sources of UK tax law for TX-UK?
The main sources are statute, mainly the Finance Acts, and case law, where courts interpret that legislation. HMRC practice is a further source of information on how the law is applied. It is not law itself.
Is HMRC guidance legally binding?
No. HMRC manuals and statements show how HMRC reads and applies the law. If they conflict with statute, statute prevails.
What is the difference between tax avoidance and tax evasion?
Avoidance reduces tax by arranging affairs within the law. Evasion reduces tax by deliberately misleading HMRC, such as leaving out income, and it is illegal.
What does the GAAR do?
The General Anti-Abuse Rule lets arrangements that are abusive be counteracted, so the tax advantage they were meant to give is removed. It targets abuse, not ordinary tax planning.
Which Finance Act does TX-UK examine?
For sittings from June 2026 to March 2027 and in June 2027, ACCA examines the Finance Act 2025. It received Royal Assent on 20 March 2025.