i never found it acceptable to offer or ask personal financial information. i get asked all the time, how much is my rent, what kind of sales does my biz do, how much do i pay my porter, etc... and i always respond w “sorry, i don’t discuss personal information w anyone other than my accountant”. if someone chooses to talk about it, themselves, that’s their prerogative. but i certainly shouldn’t be required or expected to do so. i’m certainly never gonna ask anyone how much THEY make a year!