Can a self-employed parent's personal expenses run through the business be added back as income?

Yes. Where a self-employed parent runs personal expenses, such as a vehicle, travel, meals, or other personal costs, through their business as a deductible business expense, a court can add the value of those personal benefits back into the parent's income for child support purposes, since the underlying purpose of guideline income is to capture what's genuinely available to the parent, not simply what shows up as taxable profit after deductions.

This is a common issue with small, closely-held businesses where the owner has significant discretion over what gets categorized as a business cost. Courts generally require some evidence connecting specific claimed expenses to personal, rather than genuine business, use before adding them back, which usually means reviewing detailed expense records, receipts, and the nature of the business itself rather than making broad assumptions. A pattern of expenses that seem disproportionate to the business's actual operations, such as unusually high travel or vehicle costs for a business that doesn't obviously require them, tends to draw the most scrutiny. Because this analysis is evidence-driven, a recipient suspecting this pattern should request detailed business financial records rather than relying on the reported net income figure alone.