Usually that is the point where money laundering is being found, when you transfer it from your account. It doesn't matter if you do it in many small amount or you do it in one bulk transfer. You'll only be investigated if you have an unexplained wealth. But if the money is yours and you obtained it in legal way and being taxed then why would government follow you.
All this is true in case of Fiat, that government charges taxes on your money and trace in case of big transactions. In case of Bitcoin Wallet to wallet transaction, there is no check and balance. The money can easily be moved out of country once converted into bitcoins.