Child Support With Variable Income: Self-Employment, Overtime, and Bonuses

Income is broader than a salary

Most guidelines start from gross income “from any source,” then subtract the deductions the state allows. Wages, overtime, bonuses, commissions, tips, self-employment profit, rent, dividends, unemployment benefits, disability payments, and some retirement income are commonly inside that definition. The federal Office of Child Support Enforcement describes the same pattern across states.

What differs is the number each state wants you to start with. Some ask for net income after taxes and mandatory deductions, some for gross income, and a few for an adjusted figure that already accounts for prior support or self-employment tax. That is why the state page, not a national rule, decides which figure to enter.

Self-employment: net, not revenue

For a business owner, support income is net profit after ordinary and necessary business expenses, not the amount clients pay. The document that matters is the business return, not the summary in a portal.

Courts routinely look past the bottom line. Expenses that benefit the owner personally (a vehicle, meals, travel, a home office that is not really used for work) can be added back. Some states also add back depreciation, because it is a paper deduction rather than money spent that year. A business that pays the owner no salary still produced income if it retained profit.

For cash businesses, bank statements and deposits are the evidence. A tax return that reports far less than the deposits is the fastest way to end up with an income figure set by the court rather than by the return.

Overtime, bonuses, and commissions

These are usually included when they are regular and predictable. Courts often average them over 12 months, or over two or three years when the variation is large, so the order reflects a normal month rather than the best or the worst one.

One-off payments are less consistent. A signing or retention bonus can be treated as income in the year received, or spread over the period it compensates. Commissions paid quarterly are usually averaged. Some states treat mandatory overtime, a second job, or income beyond full-time hours differently, so the state page is the place to check before assuming the pattern.

Tips, seasonal work, and a second job

Tips are income, and they are usually averaged the same way. Seasonal work needs an annual average: using the peak month overstates support for the rest of the year, and using the off month understates it.

A second job is generally included as well, because the guideline looks at total resources rather than at one employer. Whether the extra hours count, and from what point, is a state rule.

Stock compensation and one-time payments

Restricted stock units and options usually become income when they vest or are exercised, not when they are granted. The value at that moment is what enters the income calculation, and it is the number to average if the grants are regular.

Severance is the least uniform item. Depending on the state and the order, it can be treated as income in the year it is paid, allocated over the months it replaces, or excluded. If a large one-time payment lands in the same year as the support calculation, say so instead of letting the average speak for itself.

Which monthly figure to enter

The calculators ask for one figure. Use the average that represents the year (twelve months of pay stubs, or two to three years of returns when income is volatile), and convert only when the state asks for a different period.

Annual income: Ohio and New York. Multiply the monthly average by 12. Weekly income: Indiana, New Jersey, and Massachusetts. Divide the monthly figure by 4.33 or use the weekly numbers directly. Everywhere else the field is monthly.

Worked example

A self-employed parent bills $120,000 a year and has $30,000 of ordinary business expenses. Net profit is $90,000, or $7,500 a month. A $10,000 annual bonus adds $833 a month when spread over the year, for a monthly figure of $8,333.

In Texas, 20% of that for one child is $1,667 a month. The arithmetic is the site’s, and it is illustrative: Texas uses net resources, which is not the same as business net profit, and every state defines income differently.

What to document

• Two or three years of personal returns, plus the business return and any K-1s.
• Year-to-date pay stubs and the bonus or commission statements that support the average.
• Bank statements for a cash business, and a profit-and-loss statement for the current year.
• The grant or plan documents for stock compensation, with the vest or exercise values.
• Evidence that a payment was one-off rather than recurring, if that is the argument.

Frequently asked questions

Written and maintained by Jesús Muentes.

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