Most people involved in such activity have incriminating communications that are very easily used in court such as text messages. The bar for proving that vario

Most people involved in such activity have incriminating communications that are very easily used in court such as text messages. The bar for proving that various messages are evidence of illegal activity is surprisingly low. One individual not only has to be very careful, but also enforce the same level in everyone who communicates with them while providing customer service (e.g. making customers happy, feel good l, not offending them and so forth). The issue of tax fraud is only an issue if they investigate you - someone in the tax department would have to find a reason to take notice. In the case of a narcotics trafficker it's more likely that activity would be observed by drug investigators than for the tax department would determine there's someone paying a mortgage or rent that isn't a significant income tax payer. That's not really how tax investigations work.