[bemmu]

In Finland even salary and capital gains data is released. Newspapers compile high score lists from it each year. There might be some lower limit to how much you need to earn before your data becomes public.

Here's some select tidbits from the data in English: http://yle.fi/uutiset/who_are_finlands_top_earners/8427787

[vesinisa]

You can actually access the public tax information for anyone if you visit the tax office or call their free customer service. Newspapers publicise only the top earners, but nothing stops you from finding out how much your neighbour earned last year in income and capital gains, if you really want to (and I guess quite many want, Finland is after all known as the "land of million of enviers" in addition to the more famous "land of thousand lakes".)

[staticelf]

That is true for the Swedish sites/system as well.