Again, how do you know this all isn't going to catch up to him at some point while he's renting from you? If he's hiding income from creditors, child support, anywhere, the courts and the IRS have ways of catching up to him, even if he doesn't use a bank and pays cash for everything. Mainly garnishing his wages after a judgment has been passed against him. Again, some people may be comfortable renting to this tenant. I fortunately can find far more qualified and stable tenants. This probably isn't the case all over like it is in suburban Minneapolis.