While we're on the subject, how can I properly invoice someone as a sole trader? Are there rules? (I'm an audio tech)
I assume you have an ABN. I found an invoice template on the microsoft website ages ago and use that. If you are registered for GST, you have to include that at the end. For example, you write in the services provided and the charge - say its $100 for the sake of easy numbers. At the bottom have a subtotal, then the GST component then the grand total...
subtotal - $100
GST (10%) - $10
TOTAL - $110
make sure you have your ABN, business name, address and any contact details on the invoice in a header, and usually at the bottom include your accepted payment methods. Also you must have written on there somewhere who you are charging for your services. That way they can claim it in the future too... after all, thats the whole point of an invoice. Create an invoice number, and keep them sequential as you do more. 0001 is always a good place to start, obviously. If you find one of the many invoice templates, its all fairly straight forward, just make sure you have included all the info I told you. Pretty easy. if you have any dramas, I'll email you one of my invoices and you can use that as a guide. hit me up in PM if you want.