Even still if you ever get audited the IRS will ask where the money came from. Edit: I am referring to buying property and houses specifically. Obviously you could always put your property in others people's name like most dealers do but then you never actually own anything. From what I know the IRS isn't as concerned with money laundering because you are paying taxes on that money so it's a win/win. Edit#2: I mean look at the Panama Papers, politicians and wealthy people from around the world were money laundering/evading taxes and getting away with it for years until an attorney leaked everything.