Source-led explanations
Rule summaries cite GOV.UK or HMRC guidance. Worked examples use illustrative amounts to explain the arithmetic. Publication and modification dates describe the article; source-check dates describe the bundled research and must be updated after a genuine review.
Transparent assumptions
Calculator pages explain the formula, rounding and limitations. Results do not imply approval from HMRC. No rankings, tax savings or individual outcomes are guaranteed.
Corrections and maintenance
When revising a guide, check the official source, update the explanation and review connected calculators and internal links. Keep examples consistent with the stated assumptions. The site owner should maintain a real contact route for readers and a review schedule for tax content.