I'm thinking this is an income related question?
It sounds like you get paid in cash and do not claim the full amount as income?
Unfortunately in cases where you are not a salaried or hourly W-2'd employee, lenders must go off of the DOCUMENTED income on your tax returns. So while it may be your CPA's job to minimize the amount of income you pay taxes on, this does you no favors when trying to get a home loan.
It's become especially more difficult to get around this in any way since the government enacted laws to ensure that borrowers have the ability to repay a loan. No more stated income or no doc loans.
So you'd need to begin documenting your income for at least a period of 2 years (and file the corresponding tax returns) in order to be able to use your income to qualify for a loan.
Hope this helps!