Free Australian Tax & Business Calculators

Run the numbers before you commit. Our free calculators cover income tax, GST, capital gains, super, payroll and business structuring — all built to current ATO rates and thresholds. Get an instant estimate, then talk to a registered tax agent when you’re ready to act.

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Explore All Our Tax & Business Calculators

Income tax, GST, capital gains, super caps, payroll and more — seventeen calculators covering the numbers individuals and businesses need most, all in one place.

BAS / GST

Work out GST collected, credits claimable and the net amount due on your next BAS.

Base Rate Entity

Check whether your company qualifies for the lower 25% base rate entity company tax rate.

Break-even

Find the sales volume your business needs to cover every fixed and variable cost.

Capital Gains Tax (CGT)

Estimate CGT on the sale of an asset, including the 50% discount where you're eligible.

Cashflow Forecast

Project money in and out over the coming months and spot shortfalls before they hit.

Depreciation

Calculate asset deductions using the prime cost or diminishing value method over effective life.

Division 293 Tax

See whether your income triggers the extra 15% tax on concessional super contributions.

Division 7A

Calculate minimum yearly repayments and benchmark interest on loans drawn from your company.

FBT Estimator

Estimate fringe benefits tax on cars, entertainment and other benefits provided to staff.

Home Office Deduction

Compare the fixed rate and actual cost methods to maximise your working-from-home claim.

Income Tax

Estimate income tax, Medicare levy and HELP/HECS repayments to see your real take-home pay.

Motor Vehicle Deduction

Compare cents-per-kilometre against the logbook method to find your larger vehicle claim.

Payroll Tax

Check your wages bill against your state threshold and estimate the payroll tax owing.

Rental Property

Estimate net rental income or loss after interest, expenses, repairs and depreciation.

Sole Trader vs Company

Compare both structures side by side and see which one leaves more in your pocket.

Super Caps Calculator

Track concessional and non-concessional contributions against this year's caps before you exceed them.

Trust Distribution

Model distributions across beneficiaries and see the tax payable on each share.

Know Your Numbers Before They're Due

Tax rarely comes down to a single figure. Marginal rates, the Medicare levy, HELP repayments, depreciation, super caps and offsets all interact differently depending on how you earn and how you’re structured. Rather than guessing or waiting until lodgement to find out, these calculators give you a clear estimate in seconds — use one on its own, or combine a few to build a full picture of the year ahead.

Whether you’re a PAYG employee checking your refund, a sole trader weighing up incorporating, or a business owner forecasting BAS and payroll obligations, there’s a calculator built for your situation rather than a generic one-size-fits-all estimate. When you’re ready to act on the numbers, our registered tax agents take it from there.

Ready to Maximise Your Tax Refund?

Book your consultation today. No obligation, no jargon — just expert advice from registered professionals.

Client Reviews

What Our Clients Say

Real reviews from real Australians. 300+ five-star Google reviews and counting.

AAD Taxation got me a refund I never knew I was entitled to. Professional, quick, and explained everything in plain English. They found deductions my previous accountant completely missed. Absolutely outstanding!

Priya S.

As a small business owner, BAS and payroll was a nightmare. AAD took everything off my plate and the fixed pricing means no surprises. Their team responds within hours — incredible service, highly recommended.

Raj M.

I had 3 overdue tax returns and was terrified of the ATO. AAD sorted everything, negotiated my penalties down, and set up a payment plan. Now I’m fully up to date. They literally saved me thousands!

James T.

FAQs

Frequently Asked Questions

Everything you need to know about using our calculators and what to do with the results.

Are these calculators free to use?

Yes — every calculator on this page is completely free, with no sign-up, no email required and no limit on how many times you use them.

Which tax year do the calculators use?

All calculators are set to the current Australian financial year and are updated whenever the ATO changes rates, thresholds or caps.

How accurate are the results?

The calculations follow current ATO rates and formulas, so estimates are accurate for standard situations. They can’t account for every offset, exemption or concession, so treat the result as a guide rather than a final figure.

Can I rely on these figures for my tax return?

They’re designed for planning and budgeting, not lodgement. Before you lodge, have a registered tax agent review your position — small details often change the outcome.

Do I need to enter any personal information?

No. The calculators run in your browser using only the figures you type in. We don’t ask for your name, TFN or contact details, and nothing is stored.

Do the calculators include the Medicare levy and HELP/HECS?

Yes — the Income Tax Calculator factors in the Medicare levy and HELP/HECS repayments so the take-home figure reflects what actually lands in your account.

Which calculator should I use for my situation?

PAYG employees usually start with Income Tax. Sole traders and business owners get the most from Sole Trader vs Company, BAS/GST and Cashflow Forecast. Investors should look at Rental Property, Depreciation and CGT. Not sure? Give us a call and we’ll point you to the right one.

What if my situation is more complex?

Multiple income streams, trusts, company structures or overseas income all sit outside what a calculator can handle. Book a consultation and we’ll work through it properly — fixed quote provided upfront.

Calculate Today. Plan With Confidence.

Get quick estimates using our calculators, then speak with our tax professionals when you need advice tailored to your circumstances.