Income from Self-Employment or
Operation of a Business


Quick Facts
  • Certain expenses and deductions are excluded from the expenses that would otherwise reduce income.
  • Burden of proof is on person seeking the deduction.

For purposes of determining child support income, income from self-employment or operation of a business, including joint ownership of a partnership or closely held corporation, is defined as gross receipts minus costs of goods sold minus ordinary and necessary expenses required for self-employment or business operation.

To determine gross income to calculate child support, the follwoing are specifically excluded from ordinary and necessary expenses:

  • accelerated depreciation expenses,
  • investment tax credits,
  • any inappropriate or excessive business expenses.

The person seeking to deduct an expense, including depreciation, has the burden of proving, if challenged, that the expense is ordinary and necessary.