You must register for GST:
Registering for GST is optional if your business or enterprise doesn’t fit into one of these categories. If you choose to register, generally you must stay registered for at least 12 months.
You can register for goods and services tax (GST) online, by phone or through your registered tax or BAS agent when you first register your business or at any later time. This is called 'standard GST' registration.
You only need to register for GST once, even if you operate more than one business.
We would recommend a software like Xero, if not already to help you calculate your income and expenses for each quarter.
We are more than happy to talk to you about and assisting you with GST Registration. Please contact our office 02 68821022 or email office@wrightpartners.com.au