For questions about the website, suggestions or corrections, email hello@calcgst.au.
Report a calculation or page issue
Include the page address, the steps you took, what you expected and what happened. A small example with made-up amounts helps us reproduce the issue without exposing your business records.
Please do not send passwords, tax file numbers, bank account details or customer invoices. We do not need sensitive documents to investigate an ordinary website bug.
For advice about your tax position
We cannot determine your registration obligations or a particular transaction’s tax treatment. Visit the ATO or speak with a registered tax or BAS agent for advice suited to your circumstances.
Business information
Operated by Star Shop com · ABN 83 443 122 821 · Melbourne, VIC, Australia.