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What's changed and when

Changelog

A dated record of meaningful changes to the calculators, guides, content and infrastructure of uktaxdrag.co.uk, and of every substantive correction.

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This page lists substantive corrections as well as new features, newest first. Each correction entry says what was wrong, which pages were affected and when it was fixed. To report an error, use the contact form.

Convention: a major entry is a new tax year, a new calculator, or a content overhaul. A feature entry is a new module or upgrade to an existing tool. An update entry is a refinement or non-breaking improvement. A correction entry records a substantive factual fix.

11 October 2026

Correction

Corrections and dated wording ahead of the Autumn Budget, and four case files from market history on the options pages. Each new fact names its source and the date it was checked; the options worked examples keep their 17 August 2026 model date.

10 October 2026: options depth

Update

The second stage of the options review added depth to existing pages rather than new pages. Each new fact names its source and the date it was checked; the worked examples keep their 17 August 2026 model date, and every new figure is recomputed by the site’s checks.

10 October 2026

Correction

A second review of the options course checked its pages, worked examples and tools against the exchanges’, HMRC’s and the companies’ own documents. The worked examples keep their 17 August 2026 model date and were not re-priced: where something has happened since, the page now says what was assumed and what happened. The main corrections:

4 October 2026

Correction

3 October 2026

Correction

Guides and calculators were checked line by line against primary sources: GOV.UK, HMRC manuals, legislation.gov.uk, the FCA, ONS, the Bank of England and the providers named on each page. The first round covered the pages linked from the homepage and menus, the second the other guides and calculators last reviewed before September. Each corrected page now lists the sources it was checked against, with the date. The main corrections follow; each says what was wrong and what the page says now.

Guides and calculators linked from the homepage and menus

3 October 2026

Correction

28 September 2026

Correction

Options section: the full list of corrections

The options section was rewritten between 26 and 28 September 2026. It now has 53 pages, and every worked figure is worked from one dated set of assumptions and checked before each update (see how the options worked examples are built). The pages no longer carry their own "earlier versions of this page" notices. Each entry below says what was wrong and what the page says now.

Corrections that applied across the section

Page by page

14 September 2026

Update

5 September 2026

Correction

4 September 2026

Update

3 September 2026

Correction

26 August 2026

Update

17 August 2026

Correction

15 August 2026

Update

24 to 25 July 2026

Correction

6 July 2026

Correction

9 June 2026

Update

29 May 2026

Correction

2 May 2026

Feature

25 April 2026

Major

25 April 2026

Feature

23 April 2026

Feature

22 April 2026

Update

6 April 2026

Major

UK Tax Drag launched in April 2026. Its publisher, Finsolve Consulting Limited, was incorporated on 14 March 2024. Changes made before April 2026 are not listed.

Editorial accountability
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Pages are checked against the primary sources listed on each page and reviewed by the Editor; corrections are logged in the changelog. Pages are drafted with the help of AI tools (how AI is used). No affiliate revenue. No sponsored content. No paid placements.

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UK Tax Drag is an independent publication by Finsolve Consulting Limited, not affiliated with or endorsed by HMRC, GOV.UK or any government body.