What this site knows about you.

The short version

There is no account, no sign-up and no email capture. Nothing you type into a calculator is stored by us or sold to anybody. But this site does run Google Analytics, and because a calculator keeps your answers in the page address, the figures you enter are part of what Google is told. That is set out below rather than left to be assumed.

Google Tag Manager

Every page loads a container from googletagmanager.com. That request alone tells Google your IP address, your browser’s user-agent string and the address of the page you are on.

The address of the page is the part worth reading twice. A calculator keeps your answers in the link — that is how a result can be shared and restored — so a stamp duty address contains something like ?price=750000&buyer=first-home. Anything measuring page addresses therefore sees the figures you entered. They are not typed into a form and sent; they are in the address, and the address is what analytics reports on.

Google Analytics 4 is loaded through that container (property G-35DPL8VE2F). It records each page you open, and the address it records is the full one — so on a calculator it includes the answers you entered. It sets two cookies, _ga and _ga_35DPL8VE2F, which identify your browser to Google across visits.

This paragraph replaced one saying the container was empty and fired nothing. That was true when it was written and stopped being true when the analytics tag was added, which is the honest reason it is worded as a statement of what runs today rather than a promise about what will not.

What is stored on your device

Your theme choice, always. When you choose the day or night theme it is saved in your browser’s local storage under the key chachng-theme, so the site does not forget it between visits. It holds one word. Clearing your browser data removes it, and the site works normally without it.

Two cookies, set by Google Analytics: _ga and _ga_35DPL8VE2F. This site’s own code still sets none and reads none, and the theme preference above is local storage rather than a cookie — but the distinction that matters to you is that something on this site now identifies your browser to a third party across visits, and it did not before.

Where your figures actually go

Your answers live in the address bar. That is the whole storage mechanism: the link is the saved calculation, which is why it restores every answer and works on somebody else’s machine.

This has a consequence worth stating plainly rather than burying. A web address is sent to the server that serves the page, and servers keep access logs. So the figures in a calculator link may appear in the hosting provider’s logs — the same way any URL you visit does.

The PDF statement is different, and deliberately so. Its inputs travel in the part of the address after the #, which browsers never send to a server at all. A statement is assembled entirely inside your browser.

What the server sees

Standard web request information: the address requested, the time, your IP address and your browser’s user-agent string. This is generated by the hosting platform rather than by us, and we do not combine it with anything else or use it to build a profile.

We do not run our own database and keep no copy of it. How long the host retains those logs is the host’s policy, not ours. How long it keeps them is set by its own plan, and that period is not published here yet.

The site is served from outside Australia and New Zealand

It runs on a hosting platform that serves the site from a global network. Pages are delivered from whichever of its locations is closest to the person asking for them, which means the location changes from visitor to visitor and over time — there is no single country to name, and naming one would be wrong for most readers.

What is constant is the part that matters: the request information above — your IP address, and the addresses you visit here — is handled on servers outside Australia and New Zealand. If that matters to you, it is worth knowing before you put figures into a calculator, which is why it is stated plainly rather than left to be inferred.

Getting at your information, or complaining about it

We hold no account and no profile, so in almost every case there is nothing of yours for us to show you or correct. If you believe otherwise, or want to ask what exists, write to baireecoal@gmail.com and you will get an answer.

If you are not satisfied with that answer, you can take it further. In Australia, to the Office of the Australian Information Commissioner at oaic.gov.au. In New Zealand, to the Office of the Privacy Commissioner at privacy.org.nz.

Which privacy law applies

Australia’s Privacy Act 1988 exempts most businesses turning over $3 million or less a year, and this site is well under that. It is written to meet the Australian Privacy Principles anyway — the exemption is about obligation, not about whether you deserve to be told what happens to your information.

Third parties

One: Google, through the tag manager described above. Loading any page on this site therefore does tell Google that you did. That sentence used to read “none on the page”, and it stopped being true on 31 August 2026.

Nothing else. No advertising, no tracking pixels, no embedded widgets, no comment systems, no social buttons. Fonts and animation libraries are served from this site’s own origin rather than a content delivery network, so they tell nobody anything.

Children

This is a tax and property calculator. It is not directed at children and collects nothing from anybody, of any age.

Changes, and asking us things

If this policy changes, the date at the top changes with it. Questions, corrections or a request about your information go to baireecoal@gmail.com.

Operator: chachng.com.