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Trust centre

How this free site stays useful and trustworthy

Tax, investing and money tools need more than pretty pages. This centre gathers the methodology, assumptions, privacy notes, advertising rules, source approach and QA habit in one place.

FreeNo locked core content
ReviewedVisible standards
Local-firstPrivate scenarios
Ad-awareCritical tools protected
Site standards

What to check if you rely on a page

Methodology

How rules, assumptions, estimates and calculator limits are handled.

Read methodology

Calculator QA Lab

Formula checks, confidence labels, worked examples and edge-case prompts behind the calculator library.

Open QA Lab

ETF data methodology

How ETF factsheet fields, research proxy metrics, official links and source confidence labels work.

Read ETF methodology

Open methodology

How to inspect calculator logic in the browser when you want to verify the calculation path.

Inspect logic

How we compare to HMRC

Where official tools exist, this explains the comparison and the limits of educational estimates.

Open comparison

Editorial policy

How pages are written, reviewed, corrected and updated.

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Privacy and analytics

What stays local, what can be measured, and how scenario storage works.

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Advertising policy

How the site can stay free without putting ads inside decision-critical calculator flows.

Read ads policy
QA checklist

Current quality habit

AreaWhat the site should doWhere to verify
SearchSearch index should include new pages and important sections.search-index.json
SitemapNew pages should appear in the HTML sitemap and XML sitemap.sitemap page
CalculatorsMajor calculators should show assumptions, formulas, confidence labels, worked examples, edge cases and next steps.calculator QA lab
ETF dataETF pages should separate issuer factsheet fields from research proxies and send users back to official product pages before action.ETF data methodology
DownloadsTeacher PDFs and print pages should show real content, not blank pages.downloads hub
NavigationPremium free tools should be reachable from discovery pages, not hidden.decision centre
Limits

What this site is not

It is not personal financial advice, tax advice, investment advice or a regulated recommendation service. It is an educational route map, calculator library and planning workspace designed to help users ask better questions and compare scenarios before taking professional advice where needed.