You can't run and you can't hide. They know how much money you earn, how much you have in your bank and investment accounts, and even how much you won playing roulette at the casino last week. The IRS probably already knows many of your financial accounts and can get information about how much is there. But in reality, the IRS rarely delves into your bank and financial accounts, unless they're auditing you or the IRS is collecting back taxes from you.
The IRS tries to audit tax returns as soon as possible after they have been filed. As a result, most audits will focus on statements submitted in the past two years.
