You have it the opposite way. Income is EASY to hide. Almost everyone does it at some level (think of normal/common payments in cash instead of credit/debit, non-declaration of things like tips, etc.)
To hide wealth (eg. shell companies, offshore banking, etc.) is more challenging - one needs a certain amount of resources to do those things - ordinary people don't have access to such resources.
There are so many loopholes and ways to hide wealth it's not funny. Income is at least harder to hide.
You have it the opposite way. Income is EASY to hide. Almost everyone does it at some level (think of normal/common payments in cash instead of credit/debit, non-declaration of things like tips, etc.)
To hide wealth (eg. shell companies, offshore banking, etc.) is more challenging - one needs a certain amount of resources to do those things - ordinary people don't have access to such resources.