I am a business owner, and I can tell you that no auditor would find out the internal workings of the business. Not that I am C"V doing anything illegal, it's just that there is too many complexities to know what is really going on.
Don't be so sure, if you're even one dollar off with the complexities they will trace it and find everything. As can the IRS if they are so inclined.
Complexities are suspicious.