Five stars
4.9 average Google reviews

Business income & tax calculator for sole traders

Calculate annual and monthly revenue targets, GST, tax, and operating expenses as dollar amounts and percentages of revenue, like the Profit First method. The best part is you can automate this for real using Allocations in Thriday.

Five stars
4.9 average Google reviews
Business income and tax calculator

How it works

When you run your own business, you need to figure out how much money you need to make to cover everything - your personal income, business expenses, taxes, and still have some profit left over.

What you tell it:

  • How much profit you want your business to keep
  • How much you want to pay yourself personally
  • How much it costs to run your business
  • How much you pay other people to help you

What it calculates:

  • Based on your income, it figures out how much tax you'll owe (income tax, Medicare levy, and potentially a surcharge if you don't have private hospital cover)
  • It adds up everything you need plus taxes to figure out your total gross revenue target

Smart adjustments: Tax is deducted from owner's pay. If your profit is high and tax exceeds owner's pay, then tax is deducted from your profit.

What you get:

  • A clear breakdown showing exactly where all your money goes
  • The total amount you need to earn to meet your goals
  • The ability to see this as monthly or yearly targets
  • Real-time updates as you adjust your goals

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Here’s what our customers have to say

Kelly Edwards
Love it
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Reviewed
March 16, 2026
Benjamin Sydenham
Love using Thriday makes keeping track of finances super easy
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Reviewed
March 14, 2026
Lisa Speed
Thriday has a great range of tools perfect for my book keeping needs.. the crew are super friendly and accommodating to my accounting needs
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Reviewed
March 13, 2026
Rod Bartlett
Great app. Easy to navigate, efficient and customer service is a1.
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Reviewed
March 11, 2026
Anita Wise
Thriday has been an immense help to me starting my business. It has helped me to understand the ins and outs of business finance and tax. I particularly like the allocations and Profit First method
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Reviewed
March 11, 2026
Jay O
As a sole trader this is an amazing tool
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Reviewed
March 2, 2026
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