I know this question has been asked here and there but nothing I can find is helpful enough. The ABN/GST side of things is done and was incredibly straight forward and easy, all done online, very quickly.The US side of it asks for "Foreign tax identifying number, if any" which is optional, but apparently this is to do with the tax treaty so you aren't double taxed, I am reading conflicting things online, some people say Apple withhold tax and that is then credited to the australian tax, some people say apple don't withhold tax and you will need to do both US and AU taxes. So what's the story, and what do I NEED to do? I don't want to try and avoid taxes, I don't want to try find a loop hole, what is legally required of me and then based on that what is best for an australian developer publishing to the US store?One "guide" I found online said I need an EIN and then Apple withholds tax and its then credited to the australian tax so you only worry about australian tax, but when trying to apply for an EIN which is meant to take "10 minutes" I was being told an SSN or ITIN is required, and following links an ITIN has to be an application which is mailed in, being in Australia this is likely going to take weeks or even months to be processed completely, am I able to publish paid apps before this is done, as my australian tax side of things is submitted, will I only be able to publish paid apps for australia?I know it's a lot of questions but I really don't want to be bitten down the track. A final question, why is there only tax submissions for Australia, US, Canada, how does my paid app then sell in the UK or Mexico etc?