Free tools
Calculators that answer the money question
Six free calculators built on current Australian rates. No sign-up, no email capture, nothing sent anywhere — they run in your browser.
Which calculator do you need?
For a refund estimate, start with the income tax calculator. To decide how to claim home-office costs, the work-from-home calculator runs both methods. For vehicles, the log book comparison shows what twelve weeks of records is worth. Employers should check the super guarantee calculator. And if you're weighing incorporation, the structure calculator compares both outcomes at your profit level.
- Resident rates: 16% / 30% / 37% / 45%
- WFH fixed rate: 70c per hour
- Cents per km: 88c, capped at 5,000km
- Super guarantee: 12% of OTE
Calculators
Pick a tool.
Income tax calculator
Estimate your tax, Medicare levy and refund on the current resident rates — then see what a deduction is actually worth at your marginal rate.
Learn more →Work from home calculator
Run both methods side by side — 70 cents per hour against actual apportioned costs — and see the difference in dollars and in tax saved.
Learn more →Vehicle claim calculator
Work out your business-use percentage, compare both methods, and see exactly what twelve weeks of log book records is worth to you.
Learn more →Super guarantee calculator
Your SG liability at the current 12% rate, per employee and per quarter — plus what happens to the deduction if a payment lands a day late.
Learn more →Structure calculator
Enter your profit and what you actually draw. See both tax outcomes side by side — then weigh the annual compliance cost honestly.
Learn more →Why free
No email wall.
Most accounting firms put calculators behind a form. We'd rather you get the number, decide whether you need help, and call us if you do — the tool costs us nothing to give away and tells you something useful either way.
- Rates checked against current legislation and ATO guidance
- Every figure shown is explained in the page text as well
- Calculations run locally — no data leaves your browser
- Reviewed 17 August 2026 and updated each July
Using these
What each calculator answers.
Every one of these exists because it's a question we're asked in almost every consultation. Run the numbers yourself first — you'll ask us better questions afterwards.
- Income tax: what you'll actually pay on a given income, including Medicare levy — and what your next dollar is taxed at, which is the number that decides whether a deduction or a super contribution is worth making
- Work from home: whether the 70c fixed rate or the actual-cost method gives you a bigger claim, and what records each one demands
- Vehicle: log book versus cents-per-kilometre, including the point where keeping a log book starts being worth the effort
- Super guarantee: what you owe per employee per quarter at 12%, and the quarterly due dates
- Sole trader vs company: the tax difference at your profit level, against the extra compliance cost of a company
- Fee estimator: what our work would cost for your situation, from the published schedule
How accurate are they?
Accurate enough to make decisions with, not a substitute for a prepared return. They use current legislated rates and thresholds, and each page lists the figures it applies so you can see exactly what's behind the number.
What they don't model: offsets and rebates specific to your circumstances, HELP repayments, prior-year losses, trust distributions, and the interaction between entities. Those change the answer materially, which is why the output is an estimate rather than a lodgement.
Nothing you type leaves your browser. There is no email wall, no account, no analytics on the inputs, and no submission — the maths runs on your device.
Ready when you are
Want the number checked properly?
A free 15-minute call with a registered agent beats any calculator.