It might not be a common issue for everyone, but I was travelling a lot in my life, and at some point when I was in New Zealand – I happened to create an Azure account to use with my MSDN offer, and it was created in NZD. It was fine until I moved to Ireland, and now, to keep the books tidy, I wanted to change my currency to EUR.

Microsoft docos and support stand firm that this is not possible to change your billing profile residency. However, looking under the hood, it appears to be possible with some digging in and PowerShell magic.