On one hand, child support seems simple. Both parents have to support the child, so the court order just evens things out, ordering the parent without custody to help by paying the parent with custody. That money isn't income for the second parent, per se, but helps buy food, buy clothing, and pay for the other many expenses of raising a child.
If you're on a standard salary, this may be simple, but you're not. You're a business owner. You do pay yourself, but that pay fluctuates. A down year leaves you scraping by; a good year means you have extra and the staff gets bonuses. You can't predict it. The business world is a risk, full of ebbs and flows, and income isn't stable. Below are three reasons that child support orders for you and others in your position are more complex and difficult to draft: