Tallyroo.

A calculator that shows its working

The Tallyroo mascot — a friendly kangaroo in an ochre scarf holding a calculator

Tallyroo started with a simple frustration: Australian property costs are decided by published, public schedules — yet most calculators online are stale, unsourced, or hide how they reach a number. When rules changed (Queensland's new-home exemption, the ACT abolishing first-home duty), many of the top results kept quoting last year's rules.

So Tallyroo does it differently: every rate is pulled from the official source, dated, and linked; every calculation engine is tested against the revenue offices' own worked examples; and every page explains the brackets and concessions behind your result — the working, not just the answer.

Tallyroo is independent. It isn't owned by a bank, a broker or a real-estate portal, and it doesn't sell leads. The site is free to use and supported by advertising, which never influences a calculation.

Who makes Tallyroo

Tallyroo is built and maintained by Rakesh Choudhary, who personally writes every calculator engine, sources every rate, and keeps the tests honest. This isn't his first calculator platform: he also runs Indian Pay Calculator, a salary and pension platform relied on by Indian government employees, and Calcinum, a library of 130-plus US tax and finance tools — each built the same way: official schedules in, transparent working out, figures re-verified whenever the rules change. You can verify his profile on LinkedIn.

Tallyroo publishes arithmetic, not advice. Every figure is computed from the revenue offices' published schedules and pinned by an automated test suite to their own worked examples, so if a rate drifts from the official source the site fails to build rather than show a stale number. The authority here is the sources and the maths, and both are shown on every page. Whether those numbers suit your circumstances is a question for a conveyancer or a licensed adviser.

Who operates Tallyroo

Tallyroo is operated in Australia by Deepanshu Chaudhary, who holds the domain licence and looks after the Australian side of running the site. You can verify his profile on LinkedIn. He has no editorial role: every rate, every engine and every test is Rakesh's work, and no figure on this site is reviewed or approved by anyone else before it is published.

Questions, corrections or ideas for a calculator we should build next? Reach out via the contact page — a human reads everything.