BASCalc is a simple, Australian-made Excel spreadsheet that helps sole traders complete their quarterly BAS quickly and confidently.
My name is Joanne Smith, and I created BASCalc after years of doing my own BAS as a sole trader in regional Western Australia. I was tired of:
- Spending hundreds of dollars every quarter on accountant fees, or
- Spending hours inside myGov trying to work out G1, 1A, G11 and PAYG fields.
I wanted something clear and practical that I could use in Excel – no logins, no complicated software – just a straightforward calculator that gives me the exact numbers I need to type into myGov.
BASCalc was born from that frustration.
Today, BASCalc helps Australian sole traders:
- Organise income and expense totals in one place
- Automatically calculate GST collected and GST paid
- Instantly see the main BAS fields (G1, 1A, 1B, G11 and PAYG)
- Keep their own records tidy for the ATO
BASCalc is designed for:
- Sole traders
- Tradies and contractors
- ABN side-hustles
- Freelancers and gig workers
- Anyone who does their own quarterly BAS
When you purchase BASCalc, you receive:
- The BASCalc Excel spreadsheet (.xlsx)
- A simple “How To” tab inside the file to walk you through each step
- Example entries to show you how it works
- Lifetime access to the file for your own business use
If you have any questions or need help using BASCalc, you can contact:
I’ve built BASCalc to be the tool I wish I had years ago – something that makes BAS time faster, clearer and much less stressful for Australian sole traders.