This is a very common and very complex issue that family law attorneys deal with. The reality is that the IRS permits self-employed individuals to write off income that the family courts will want to count as income for child support calculation purposes. Most small business owners are under the mistaken belief that because their tax return shows a low income that this is an accurate representation of their income.nnAn experienced family attorney will submit additional discovery requests for corporate tax returns, bank statements, subpoenas for corporate records, and depositions. Unfortunately, you can never assume that the judge will 'do what is right' as they are limited in their authority to items that are proven with adequate evidence.