Accounting & Finance

Tax Set-Aside Calculator for Australian Sole Traders

"Put aside 30%" is a guess, and it is usually the wrong guess. Income tax is progressive, so the share you actually owe depends on where your income lands in the brackets, and if you are registered for GST then the GST inside your invoices was never yours to spend. This works out the real figure from a named rate table, shows the tax bracket by bracket so you can add it up yourself, takes GST off at one eleventh rather than ten percent, and converts the result into what to move out of the account each week. It also shows, in dollars, how far a flat 30% would have been off.

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Accounting & Finance

Sole traders and freelancers in Australia who invoice their own clients and have to put money aside for tax themselves.

How it works

  1. Label the year, for example "FY25 sole trader".
  2. Enter what you invoiced and your deductible expenses.
  3. Say whether you are registered for GST - if you are, your invoices include it.
  4. Read the amount to set aside, and the weekly figure to move to a separate account.

What you gain

  • Calculates the real percentage of income an Australian sole trader should set aside for tax, bracket by bracket, instead of the flat 30% rule of thumb that usually sets aside the wrong amount.

Screenshot

Technical details

Standard27.99 USD · 1500 requests · 31-day license · one-time payment · 31-day access
Pro55.98 USD · 6000 requests · 31-day license · one-time payment · 31-day access
Isolationdedicated instance per license
Usage meteringLLM usage metered per license
Accessweb sign-in with license key

How to set up & use

  1. Buy the license — your key (lic_...) appears on the order page and in your email.
  2. Sign in at app.synoriaai.com with your license key.
  3. No installation — the product runs in your browser, on your own isolated instance.
  4. Enter a label for this calculation (e.g., 'FY25 sole trader') so you can identify it later.
  5. Type your total business income and deductible expenses in dollars.
  6. Choose whether you're GST-registered (if yes, the tool will handle GST on invoices and credits).
  7. Click the calculate button to see your set-aside percentage and dollar amount, plus a breakdown by tax bracket.
  8. Review the weekly and monthly amounts shown, which are what you'd actually move to a separate account.

Frequently asked questions

Is my financial data safe?

Yes, all calculations happen in your browser. No data is sent to or stored on our servers.

Does this tool file my tax return or give legal advice?

No, it only calculates a suggested set-aside amount based on the figures you enter. It doesn't lodge anything or account for all possible deductions or offsets.

What if the tax rates change?

The tool uses a named rate table and prints that name with every result, so you can see which year's rates were applied and check if they're current.

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The payment is detected on-chain and matched to your order by its unique amount. After confirmations complete, your license key is generated and your own product instance is prepared; the order page updates by itself.
No. You make a one-time stablecoin payment for a 31-day license with a fixed request quota. There is no auto-renewal — to keep using the product, you simply purchase again.
Each plan includes a fixed number of requests for the license period. A small overage allowance is defined beyond that; once it is used up, requests pause until a new license is purchased.
Yes. Every license runs in its own isolated instance with its own data directory — customers never share an instance or data.
On-chain payments are never lost. Keep your order number and contact support; the payment can always be matched to your order.
Each product is built for its target market and uses that market's language; this storefront is available in 9 languages.

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