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IR35: Companies & Measurement

IR35 is the United Kingdom's anti-avoidance tax legislation, the intermediaries legislation contained in Chapter 8 of Income Tax (Earnings and Pensions) Act 2003. The legislation is designed to tax 'disguised' employment at a rate similar to employment. In this context, "disguised employees" means workers who receive payments from a client via an…

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IR35 topic overview

The analysis highlights Companies and Measurement as prominent areas in the source structure around IR35.

Related topics
39
Source areas
7
Connected nodes
46
Extracted relationships
130
Concept neighborhoods
19
Bridge connections
46

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Background and context · 14 topics
Overview · 12 topics
Effectiveness · 4 topics
Revenue raised · 4 topics
Criticism · 2 topics
Support · 2 topics
Private sector reform · 1 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Background and context

Support

Criticism

Effectiveness

Revenue raised

Private sector reform

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How IR35 connects Entity context

The extracted context around IR35 shows recurring relationship patterns in the source. For example, IR35 → Act, Although, April, Budget, Chancellor, Contributions, Countering Avoidance, Earnings, Exchequer, Exchequer's Budget Statement, Finance Act, Financial Year, Gordon Brown, HMRC, In, Income Tax, Inland Revenue, Intermediaries, Intermediaries Legislation, March Another extracted example is IR35 → Accordingly, April, Bradford North, British Computer Society, Chancellor, Commons Labour MP Terry, Customs, Dawn Primarolo, Disclosure, Exchequer, Government, HM Revenue, HMRC, House, In, It, IT Now, January, June, Kitty Ussher. Use these groups to spot repeated connection types before inspecting the individual relationships.

IR35

Top relations

related to background · 33
IR35 → Act, Although, April, Budget, Chancellor, Contributions, Countering Avoidance, Earnings, Exchequer, Exchequer's Budget Statement, Finance Act, Financial Year, Gordon Brown, HMRC, In, Income Tax, Inland Revenue, Intermediaries, Intermediaries Legislation, March
related to Effectiveness · 26
IR35 → Accordingly, April, Bradford North, British Computer Society, Chancellor, Commons Labour MP Terry, Customs, Dawn Primarolo, Disclosure, Exchequer, Government, HM Revenue, HMRC, House, In, It, IT Now, January, June, Kitty Ussher
related to Public sector reform · 17
IR35 → An, Any, April, CEST, Chancellor's Autumn Statement, Check Employment Status, HMRC, However, Intermediary Legislation, It, NI, November, On, PSC, Tax, The, Until April
related to Revenue raised · 13
IR35 → As, Dawn Primarolo, Establishing, HMRC, Inland Revenue's Employer Compliance, Jan, National Insurance, On, Prisk MP, Review, Shadow Paymaster General Mark, She, The
related to Section 8(1) decisions · 11
IR35 → Anyone, CEST, HMRC, HMRC's, National Insurance Regulations, PSC, Section, The, The Minister, Therefore, This
related to Private sector reform · 9
IR35 → April, COVID-19, HMRC, It, March, National Insurance, On, The, This
related to Support · 7
IR35 → Corporation Tax, Dividends, Friday, Income Tax, Monday, National Insurance, The
related to Criticism · 4
IR35 → Anne Redston, Ernst, Some, Young
related to External links · 4
IR35 → British, Employment Status ManualHMRC, HMRC, IR35 Page
is a · 1
IR35 → United Kingdom's anti-avoidance tax legislation

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

tax hmrc would legislation company national income insurance april workers revenue employees companies limited client act sector employment worker status

IR35 relationships Subject–Predicate–Object triples

TTTA extracted 130 structured relationships around IR35. Examples in this analysis include IR35 → is a → United Kingdom's anti-avoidance tax legislation and nurses → instance of → Many NHS locums. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
IR35is aUnited Kingdom's anti-avoidance tax legislation0.90text
nursesinstance ofMany NHS locums0.80text
physiotherapistsinstance ofMany NHS locums0.80text
doctors below consultant level in the NHS are automatically deemed to be employeesinstance ofMany NHS locums0.80text
a practice which has attracted strong criticism from the industry as reportedly unlawfulinstance ofMany NHS locums0.80text
is at odds with numerous judgments in which courts have found doctors to be self-employedinstance ofMany NHS locums0.80text
IR35related to backgroundIn0.60section
IR35related to backgroundBudget0.60section
IR35related to backgroundUK's Chancellor0.60section
IR35related to backgroundExchequer0.60section
IR35related to backgroundGordon Brown0.60section
IR35related to backgroundProperly0.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around IR35 bring nearby vocabulary together. In this analysis, examples include Hmrc, Tax and Revenue. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • IR35
    • Hmrc
    • Tax
    • Revenue
    • Needed
    • Citation
    • Many
    • Income
    • Status
    • Companies
    • April
    • Sector
    • Company
  • ir35
    • Hmrc
    • Tax
    • Revenue
    • Needed
    • Citation
    • Many
    • Income
    • Status
    • Companies
    • April
    • Sector
    • Company
  • income tax (earnings and pensions) act 2003
    • Tax
    • Insurance
    • National
    • April
    • Act
    • Income
    • Hmrc
    • Worker
    • Chapter
    • Workers
    • Needed
    • Company
  • limited company
    • Limited
    • Worker
    • Companies
    • Would
    • Insurance
    • Paying
    • National
    • Could
    • Workers
    • Contract
    • Income
    • Tax
  • national insurance
    • Insurance
    • National
    • Worker
    • Tax
    • Paying
    • Limited
    • Hmrc
    • Would
    • Ir35
    • April
    • Workers
    • Services
  • income tax
    • Tax
    • Insurance
    • National
    • Act
    • Hmrc
    • Worker
    • Workers
    • Needed
    • Company
    • Ir35
    • Paying
    • Would
  • companies act 2006
    • Limited
    • April
    • Citation
    • Employees
    • Income
    • Many
    • Needed
    • Sector
    • Workers
    • Private
    • Chapter
    • Intermediaries
  • hmrc
    • Ir35
    • Tax
    • Introduced
    • Income
    • Reform
    • Sector
    • Legislation
    • Revenue
    • Services
    • Workers
    • Insurance
    • National

Connections between topic areas Semantic bridges

For IR35, one of the stronger structural bridges in this analysis connects IR35 with Background and context. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
IR35 — Background and context · splits 32 ⟂ 15
IR35 — Overview · splits 34 ⟂ 13
IR35 — Effectiveness · splits 42 ⟂ 5
IR35 — Revenue raised · splits 42 ⟂ 5
IR35 — Support · splits 44 ⟂ 3
IR35 — Criticism · splits 44 ⟂ 3

Map overview Semantic statistics

IR35

Nodes47
Edges46
Triples130
Avg. degree1.96
Density0.042553
Components1

Source & methodology

TTTA analyzes the structure around IR35 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Companies & Measurement, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — IR35 · EN edition · Analysis: TopicsToTalkAbout

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