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5 offline money tools for Australian sole traders
Running a one-person business means doing the same five money calculations over and over. Each of the guides below explains one of them for free.
The five jobs
- What to charge, and how much tax to set aside. See how much should I charge as a sole trader.
- Pricing products after fees and GST. See markup vs margin.
- Getting paid on time. See overdue invoice reminder emails.
- Work-from-home and car claims. See WFH and car deductions.
- Splitting rent and bills fairly. See how to split rent fairly.
Why offline tools?
Each tool is a single HTML file that runs in your browser with no login, no subscription and no internet connection. Your numbers stay on your device. The 2026-27 ATO figures were checked on ato.gov.au in November 2026.
- Tax set-aside calculator for 2026–27 — runs in your browser, nothing is sent anywhere.
- GST calculator: add or remove 10% GST — runs in your browser, nothing is sent anywhere.
Want it done for you? Aussie Biz Kit Tools Bundle: 5 offline calculators
All five tools in one download: the Sole Trader Toolkit, the Price, Markup & Margin Calculator, the Late Payment Chaser, the WFH & Car Deduction Estimator and the Fair Rent & Bills Splitter.
- Bought separately on Whop the five cost US$46.95
- Works in any browser on computer, tablet or phone
- No login, no subscription, no internet
- Free updates for the 2026-27 year
US$24.99 one-time on Whop. Instant download.
See it on Whop →Related guides
- How much should I charge as a sole trader in Australia?
- Markup vs margin: how to price products after fees and GST
- Small business templates for Australian sole traders
General information only, not financial, tax or legal advice. Check the official pages linked above, or ask a registered tax agent, before you rely on anything here. Last checked 16 Nov 2026.