A semi-related thing - in Poland there is a law stating that income from prostitution is not taxable. When some people tried to take advantage of that (to cove

A semi-related thing - in Poland there is a law stating that income from prostitution is not taxable. When some people tried to take advantage of that (to cover illegal income of other kind), they were audited to prove that the money actually comes from prostitution: - the family was asked whether the person was in fact a prostitute - the tax payer was asked to specify where the services were performed - if they said that these were performed at the client's flats, they were asked to specify the addresses (and names of clients) who might also be interviewed - if they said they did it from clubs and so on, the club owners were asked about it (and likely denied, as even if the people were in fact prostitutes, it is a criminal offense to profit from other people's prostitution) - if they said they did this at home, the neighbors were interviewed whether the prostitution did in fact take place at home In some cases they also rejected these income statements because based on the age and looks, the amount of money was much higher than the woman could have been paid. And if you appeal this decision, you'll likely get a court decision supporting the tax authority, saying that you are in fact an ugly prostitute and that you have to pay 75% taxes since the source of income was not determined.