Cynically I consider the people most interested in surveillance of money to be the tax office. (Note that I'm a believer of paying taxes and not avoiding them,

Cynically I consider the people most interested in surveillance of money to be the tax office. (Note that I'm a believer of paying taxes and not avoiding them, and using taxation to fund public goods, voluntarily living in Norway and all.) The flip side is doing a tax return is very easy as the tax office already knows absolutely everything about your financial situation.