ftb only takes into account income as deemed by ATO - there is a requirement to declare tax free pensions and benefits (like disability or vet affairs pensions) but any taxable income is what is declared by ATO to be income. when it comes to party plan, because you are buying in stock to show, sell off obsolete stuff, have travel, it usually comes to a nil or negative income until you have a certain turnover so is classified as a hobby not a source of employment

with the 15 hours, take into account any time you're contacting customers before you go to parties, processing orders etc - you might hit that point.

i do a partyplan at the moment and they actually have a thing about registering for GST on the site - it goes through all the tax implications - not sure if tupperware has something like that. i know when i first did partyplan 10 odd years ago (i feel so OLD now) and went to the accountant for tax, he asked if i had turnover of more than 25k i think (so stock in stock out sorta thing) and when i said no, he said it's a hobby then so don't worry.