Apart from other more ideological considerations, there are two obvious practical ones: * having people know you have more money than they do can make them jea

Apart from other more ideological considerations, there are two obvious practical ones: * having people know you have more money than they do can make them jealous of you; it might also motivate family members to ask you for money and to feel angry with you if you don't share it * having people know you have a lot of money can make them interested in robbing you or in kidnapping you or your family members for ransom (especially in developing countries, but to some extent anywhere in the world) Those seem like considerations on par with those people might bring up around other kinds of privacy interests: information that can make people feel negatively toward you, and information that can incentivize people to target you for harm. (edit: I realized these issues are both more focused on how much money you have rather than on how high your salary is -- stocks rather than flows -- although the two are often correlated)