Most GST tools hand you one number. You cannot see whether the tax was worked out on the price or the total, how the cents were rounded, or what happens when half the sale is GST-free. Several of them render the answer in script, so there is nothing to quote and nothing to check.
Bizroo does the opposite: every figure is read from a dated file that names the section of the Act it came from, every engine is pinned by automated tests to the legislation’s own worked examples, and every result is broken into the lines that produced it. The reference tables are real HTML, so a person or a machine can read them without running anything.
Bizroo is independent. It is not owned by an accounting software company, a bookkeeping firm or a lender, it does not sell leads, and it is free to use. Advertising supports it and never influences a calculation.
Who makes Bizroo
Bizroo is built and maintained by Rakesh Choudhary, who writes every calculator engine, sources every figure and keeps the tests honest. Calculators are his established beat: he also runs Indian Pay Calculator, a salary and pension platform relied on by Indian government employees, Tallyroo for Australian property costs, and Calcinum, a library of US tax and finance tools. Each is built the same way: official sources in, transparent working out, figures re-verified whenever the rules change. You can verify his profile on LinkedIn.
Bizroo publishes arithmetic, not advice. Every figure on this site is read from the legislation on the Federal Register of Legislation and pinned by an automated test suite to the Act’s own examples. The authority here is the sources and the arithmetic, and both are shown on every page. Whether a rule applies to your business is a question for a registered tax or BAS agent.
Who operates Bizroo
Bizroo 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 figure read from the legislation, every engine and every test is Rakesh’s work, and nothing here is reviewed or approved by anyone else before it is published.
Found something wrong, or want a calculator we have not built? The methodology page sets out what is modelled and what is not, and corrections are genuinely welcome.