Thanks for your advice, I appreciate your input. I guess my biggest question is wether I need to be recording each individual sale or not in my spreadsheet, currently I am manually entering each sale into my income worksheet but my business is low value high volume so this is very time consuming. Would it be sufficient enough to just record say my total income for each month from both my paypal and bank account? Or am I required to be doing it the way I currently am?

Im not currently registered for gst so I don't currently print any invoices for my customers but I will likely go close to the threshold soon. In saying this will I just end up just having to go back to recording each sale individually once Im registered? Or can you still use a total sales income for determining my gst owed?