About Calculatax
Calculatax is a free set of Australian tax & pay calculators for income tax, take-home pay, super, HELP repayments and GST. The calculators use 2026-27 rates published by the Australian Taxation Office (ATO) and other government sources, and say so when a page uses an earlier year's figure. The results are general estimates, not advice.
By Calculatax
What Calculatax is
Calculatax is an independent website, and it's free to use. We check every rate against its official source, and the steps are set out in our methodology. To contact us, email hello@calculatax.com.
What we build and what we do not do
We build calculators and short guides that show how Australian tax and pay rules apply to a set of inputs. Each calculator page states the rates it uses, shows a worked example and lists what it doesn't cover.
We don't give personal tax, legal or financial advice. A calculator result depends only on the figures you enter and the published rates.
Our calculators can't replace a registered tax agent or a licensed financial adviser. Where your situation is outside what a calculator models, the page says so. The disclaimer sets out the limits in full.
How rates are kept current
Every rate, threshold and date we use comes from an official source, and we record where each one came from. The main sources are:
- The ATO, for income tax rates, offsets, the Medicare levy, HELP thresholds, PAYG withholding schedules, super caps and GST.
- The Fair Work Ombudsman and the Fair Work Commission, for the national minimum wage.
- The Australian Bureau of Statistics (ABS), for average and median earnings.
- Services Australia and the Department of Social Services, for Age Pension age, rates and deeming.
- The ABS, for life expectancy.
The current figures were checked against those sources on 1 November 2026.
Two figures and where they come from
The national minimum wage of $26.44 an hour from 1 July 2026 comes from the Fair Work Ombudsman's minimum wage increase media release (opens in a new tab). The 15% rate on income from $18,201 to $45,000 comes from the ATO tax rates for Australian residents (opens in a new tab) and the legislation behind it.
Most tax and super figures change on 1 July. We update the calculators for the new financial year, and our methodology lists the rates they use.
Some figures arrive later. The 2026-27 Medicare levy low-income thresholds, for example, are normally set in the following May Budget. Until then, we use the latest announced thresholds and label them that way.
When a figure is not yet confirmed by an official source, we don't guess. The page shows the latest confirmed value with its year, or says the figure is pending.
Report an error or contact us
If a result looks wrong, tell us.
- 1
Send us the details
Please include the calculator, the inputs you used and the figure you expected.
- 2
We check your report
We check every report against the current ATO rules.
- 3
We fix confirmed errors
We correct confirmed errors.
You can reach us through the contact page or by email at hello@calculatax.com. We can't answer questions about your own tax affairs; the ATO or a registered tax agent can.
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