Savings Runway
Sources, assumptions and calculation method
View methodTransparency
Sources and updates
A public record of the evidence, assumptions and material changes behind Money Considered calculators and articles.
The Next £1
Sources, assumptions and calculation method
View methodTrue Cost of a Purchase
Sources, assumptions and calculation method
View methodBuy or Rent?
Sources, assumptions and calculation method
View methodInvestment Growth
Sources, assumptions and calculation method
View methodEducation
Article sources stay with the explanation
Each of the 16 published articles links directly to its principal evidence and records the date it was reviewed. This keeps a claim, its context and its source together.
Browse the article collectionEvidence register
Core sources
Calculator-specific references appear on each methodology page. These sources support definitions, consumer guidance, regulatory boundaries and common assumptions used across the collection.
Financial guidance and regulatory boundaries
FCA — Advice or information MoneyHelper — Emergency savings MoneyHelper — How to prioritise your debtsTax, housing and investment rules
GOV.UK — Stamp Duty Land Tax GOV.UK — Individual Savings Accounts GOV.UK — Tax on pensionsUpdates and corrections
Material changes remain visible
A dated entry will be added here whenever a correction changes a result, an assumption is revised or a source affecting the method changes.
Review policy
Sources are checked in context
Time-sensitive rates and rules are reviewed before public release and whenever a calculator’s method is updated. Users should verify tax, benefit, pension and product rules that may have changed.