Methodology

Numbers have an expiry date

Fee rates, tax rates and thresholds are not settled once and for all. A number that was right yesterday can be wrong today.

So when a number appears on a screen here, the aim is to show where it came from and when it was checked, not only the number itself.

Official sources come first

For the basis of a number or a rule we look first at whoever actually sets it: a government body, a public institution, or a platform's own published guidance.

A calculator whose source we could not confirm is not published; it stays in preparation. We do not fill the gap with a number that merely looks right.

The date of the check is recorded

We record the date a person last checked a number or a rule. A reference date shown on screen means that moment of checking.

For values that move often, a point to look again is set as well. Until then it should be visible which date the value was written against.

A check date is never written as more recent than it was. An old date is shown as the old date it is.

Confirmed values are separate from what you type

A calculator keeps values whose basis was checked apart from the values you type in yourself.

Values that differ from person to person are not estimated for you. A fee rate that depends on your own contract, or your real purchase cost, is something only you can look up and enter.

That is why the same calculator gives different results depending on what goes in. Where those values came from is something the person entering them knows best.

A result is an estimate for reference

A result is an estimate produced only from the values you type and the formula shown on the page. It can differ from a real settlement amount or a real investment outcome.

Taxes, fees, exchange rates and inflation are not reflected unless they are part of the values you typed.

No settlement amount and no investment return is promised here.

What you type is not sent as usage analytics

The values you type and the calculated results are not included in usage analytics events. The values this site explicitly adds to an event are a fixed set of names saying which kind of action happened, on which calculator, in which language and in which place on the page. This does not mean those names are the only browser, device or page-related technical information that the GA4 tag may attach to a request.

No custom identifier for recognising a visitor is created for this measurement.

This is not a claim that the site makes no technical requests at all. Opening a web page involves communication of its own, and saying otherwise would not be true.

Who builds and maintains this

This site is built and maintained under a single brand name. The same name appears at the top and the bottom of every screen.

The only confirmed way to reach us is the email address shown at the bottom of this page. A personal name or organisational details are not invented to fill that gap.

If a calculation looks wrong, or a basis looks out of date, please write to that address. Naming the calculator and the number makes it clear what needs checking again.