17 September 2026 — pension-relief claim routes
The calculator’s pension explanation previously described Self Assessment as the route for claiming additional relief on relief-at-source contributions. It now explains that eligible taxpayers may use Self Assessment or HMRC’s claim service, depending on circumstances. This corrects the explanation; the calculation engine still excludes additional separately claimed relief from take-home pay.
Source: HMRC pension tax relief guidance. Affected material: the pension explanation on the main calculator and salary pages.
Research version history
17 September 2026: first publication of the pay-rise, Scotland, pension-method and student-loan comparison datasets. Each study links to immutable dated CSV, JSON and chart files. The existing take-home-by-salary dataset retains its 5 September 2026 version.
If a dataset is corrected, its replacement receives a new dated version, the reason is added here and the affected earlier download remains identifiable. This log starts on 17 September 2026 and is not a claim of a complete historical change record.