When a court calculates child support, it counts as income almost everything a parent brings in before taxes and deductions: wages, tips, bonuses, self-employment profit, investment returns, rental income, most government benefits, retirement distributions, and military allowances. What counts as income for child support is broader than most parents expect, and the number on the support worksheet is built from gross earning power, not take-home pay. A short list of things stays out, mostly means-tested public assistance, but the default assumption should be that a dollar coming in is a dollar the court will look at.
Two calculation models dominate. Most states use an income shares approach that estimates what the parents would have spent on the child together and splits that figure by each parent’s share of combined income. A minority use a percentage-of-income model applied to the noncustodial parent alone. Either way, the first question is the same: what is each parent’s gross income?
Wages, Bonuses, and Overtime
Regular employment income is the simplest piece. Base salary, hourly wages, tips, commissions, and anything else reported on a W-2 all count at the gross figure on your pay stub, not what lands in your bank account. Voluntary tax-advantaged deductions like retirement contributions don’t reduce the number the court uses, because the point is to capture full earning capacity.
Bonuses and overtime get closer scrutiny because they move around. Judges typically average these amounts over the past one to three years so a single strong or weak quarter doesn’t distort the monthly figure. Year-to-date pay statements and prior tax returns are the usual evidence. A parent who racked up overtime for years and now claims those hours are gone should expect questions about why.
Self-Employment and Business Income
Self-employed parents and independent contractors are the hardest cases because they control the reporting. The starting point is gross business revenue minus legitimate operating expenses, the Schedule C bottom line on a federal return. Courts do not stop there. Tax law lets business owners deduct things that don’t actually reduce cash available to support a child, and those get added back.
Accelerated depreciation is the classic add-back. A business can write off equipment on an aggressive schedule, lowering taxable income on paper without changing cash flow. Roughly 30 states explicitly require courts to add depreciation back for child support purposes. Vehicle, meal, travel, and home office deductions draw the same scrutiny when they blur into personal lifestyle. If reported income doesn’t match the house a parent lives in or the car they drive, the judge will notice.
Hiding self-employment income has real consequences. A parent who lies under oath about earnings faces contempt charges and, in serious cases, perjury charges carrying criminal penalties including jail time. Courts can also retroactively increase support and shift attorney fees to the dishonest side.
Investment, Rental, and Passive Income
Income doesn’t have to come from a job. Interest from savings and money market accounts, stock dividends, and capital gains from selling investments all feed into gross income. Rental income counts as well, though courts generally let landlords subtract reasonable expenses like mortgage interest, property taxes, and maintenance before adding the net figure. Royalties from creative work, patents, or mineral rights and distributions from trusts round out the passive category.
What matters most is whether the stream is recurring and reliable. A steady $2,000 a month in rental income is predictable cash flow and belongs in the calculation. A one-time capital gain is harder to categorize, and courts sometimes spread a large gain across several years rather than treating it as a single month’s income.
Inheritances, Settlements, and Lottery Winnings
One-time windfalls produce some of the most contested disputes. Treatment varies by state. Some jurisdictions treat the lump sum itself as income in the year received, which can spike a support obligation sharply. Others exclude the principal but count the investment income the windfall goes on to generate. A parent who inherits $200,000 and puts it in a brokerage account paying $8,000 a year in dividends may not owe more based on the inheritance itself, but that $8,000 becomes countable income going forward.
Recurring Gifts from Family
Regular financial help from relatives can also land in the income column. Courts in many states have held that recurring monetary gifts function like income when they reliably supplement a parent’s lifestyle. A one-time birthday check usually doesn’t matter. Parents who send $3,000 every month are a different story, and the other parent’s attorney will argue that money belongs in the calculation.
Government Benefits and Retirement Income
Benefits designed to replace lost wages count as income in nearly every state. Social Security disability, workers’ compensation, and unemployment insurance all fall into this category. The logic is simple: these programs step into the role employment income used to fill, and the child’s needs don’t disappear because a parent stopped working.
Retirement income follows the same principle. Pension payments, Social Security retirement benefits, and distributions from 401(k) plans or IRAs are countable once a parent begins receiving them. A parent who retires early should expect the court to include those distributions and potentially impute additional income if the early retirement looks aimed at reducing support.
Military Pay and Allowances
Service members sometimes assume only base pay counts because Basic Allowance for Housing and Basic Allowance for Subsistence are tax-exempt. That assumption is wrong in most states. BAH and BAS reduce out-of-pocket living costs, which effectively increases disposable income, and courts treat them as part of gross income regardless of their tax-free status. Special duty pay, hazardous duty pay, flight pay, and similar incentive compensation are treated the same way. The Leave and Earnings Statement, not just a W-2, is the document courts rely on to capture the full picture.
Imputed Income for Voluntary Underemployment
A parent who quits a high-paying job or deliberately drops to part-time hours to lower support is in for a rude awakening. Courts have broad authority to impute income, assigning an earning capacity based on what the parent could be making rather than what they actually earn. This is where disputes get most contentious and where judges exercise the most discretion.
Factors courts weigh when imputing income include:
- Work history and past earnings. A parent who earned $95,000 for a decade before taking a $35,000 job needs a compelling explanation.
- Education and vocational training. Advanced degrees and professional licenses raise the floor for reasonable earning potential.
- The local job market. A parent in an area with limited opportunities gets more benefit of the doubt than one in a thriving market.
- Health and age. Physical or mental health conditions that genuinely limit work capacity can reduce or eliminate imputed income.
- Caregiving responsibilities. Some courts recognize that a parent caring for a very young child may have legitimate reasons for reduced employment, particularly if both parents agreed to that arrangement earlier.
The burden usually falls on the lower-earning parent to show they aren’t sandbagging. Documented job-search efforts, recent applications, and rejection letters carry weight. A bare claim that no good jobs are available rarely convinces a judge.
What Doesn’t Count
Not everything a parent receives is income for these purposes. Means-tested public assistance is excluded in virtually every state, because these programs exist to provide a basic safety net at poverty-level eligibility and counting them would defeat the purpose. Supplemental Security Income, Temporary Assistance for Needy Families, and Supplemental Nutrition Assistance Program benefits all sit in this protected category.
Foster care payments and adoption assistance subsidies are excluded as well, because they are paid on behalf of a specific child to meet that child’s needs, not to supplement the parent’s general income. Child support received from a different relationship is typically excluded for the same reason: those payments belong to a different child.
A new spouse’s income is a common point of confusion. In most states, a new partner’s earnings are not directly plugged into the child support formula. The obligation belongs to the biological or legal parents, not stepparents. Some courts do consider household income indirectly when sizing up a parent’s overall financial picture, particularly if a new spouse’s contributions free up the parent’s own earnings for other uses.