About these guides

Aussie Biz Kit makes spreadsheet templates, fillable PDFs and small offline calculators for Australians: sole traders, tradies, cleaners, renters, students and families. They're sold as one-off downloads on Whop, priced in US dollars because that's how the store checks out.

This site also has two free in-browser tools: a tax set-aside calculator for 2026–27 resident rates, and a GST calculator that adds or removes 10% GST. Both run entirely in your browser. There are no cookies, no tracking and no forms that send your numbers anywhere.

How the guides are written

• They're written with help from an AI assistant and checked by hand against the official pages they link.
• We don't invent statistics. Where a rule or rate matters, we link the official page (usually ato.gov.au, business.gov.au or your state's fair trading body) so you can check the current version.
• Everything here is general information, not financial, tax or legal advice. For advice about your situation, talk to a registered tax agent, accountant or lawyer.

Refunds and support

Digital downloads, so there are no change-of-mind refunds. If a file is faulty or not as described, email doganp@mail.grokbot.com and we'll fix it or refund you, in line with Australian Consumer Law.