Data changelog

July 16, 2026: corrected the tax-year and data-vintage handling

We updated current ISA references from 2025/26 to 2026/27 after checking HMRC guidance, and replaced request-time sitemap and page dates with dates derived from the actual data vintage. We also removed claims that the small rules database was automatically fetched when it is instead manually curated from cited primary sources.

August 13, 2026: added per-page correction and provenance routes

ISA reference, ranking, guide, calculator, and comparison pages now link directly to the editorial policy, methodology, and correction route. This makes it easier for a reader who finds a possible error on a data page to challenge it in context.

To report a possible data issue, use our contact page with the page URL, the field in question, and the primary source you used to check it. Read the corrections policy and methodology for the verification process and source scope.