Child support is money that one parent pays the other that goes toward a child’s housing, food, clothing, health care, and other needs. So, how is child support calculated? California courts generally apply a statewide formula using both parents’ incomes, their parenting time, and the number of children. In specific, limited circumstances, the court may depart from the formula. Childcare, uninsured health care, and other qualifying expenses may also increase the total obligation.
Differences in reported bonuses, business expenses, tax deductions, or parenting time can significantly change the result. At Pakpour Banks LLP, we review income records, claimed deductions, parenting schedules, and child-related expenses. We then explain how those facts may affect the guideline amount. Our award-winning, top-rated family law firm brings more than a decade of experience to California support matters. We provide individualized guidance informed by our familiarity with California law and Sacramento-area courts.
Not Sure How Your Child Support Amount Was Calculated?
California’s guideline formula weighs both parents’ incomes and parenting time, and courts only depart from that number in specific, limited situations. Our Davis-based team can review your income records and parenting schedule and explain what the numbers actually mean for your case.
How Is Child Support Calculated in California?
When parents separate, a California court typically orders one parent to pay child support to the other. Usually, the higher-earning parent pays the lower-earning parent, depending on how often each parent cares for the child. A parent with more parenting time, meaning the parent who cares for the child more of the time, can still owe support if that parent earns substantially more.
The court uses California’s statewide uniform guidelines to determine whether one parent owes support and to calculate the monthly amount. The statutory formula is CS = K[HN − (H%)(TN)]. Each part represents information about the parents’ incomes or parenting arrangement:
- CS is the resulting monthly child support amount;
- K represents the portion of the parents’ combined income allocated to support;
- HN is the higher earner’s net monthly disposable income;
- H% is the percentage of time the higher earner has physical responsibility for the child; and
- TN is the combined net monthly disposable income of both parents.
If the formula produces a positive number, the higher earner pays the result to the lower earner. If it produces a negative number, the lower earner pays that amount to the higher earner. The court generally presumes the formula’s result is the correct amount to meet the child’s best interests.
The formula compares the higher earner’s available income with that parent’s share of responsibility for the child. Generally, a wider income gap increases the payment. More parenting time for the higher earner generally reduces it because that parent pays more expenses directly while caring for the child.
Courts and lawyers commonly use guideline child support calculators or court-approved software to complete the mathematical child support calculation.
What Income Does the Court Use in the Child Support Calculation?
When determining child support, California courts examine income from:
- Employment compensation—salary, wages, overtime, commissions, and bonuses;
- Business earnings—business receipts after subtracting expenditures required to operate the business;
- Investment income—interest, dividends, rents, royalties, annuities, and trust income;
- Retirement or benefit payments—pensions, unemployment benefits, disability insurance payments, and certain Social Security benefits;
- Employment benefits—benefits that reduce a parent’s living expenses.
Public assistance based on financial need, child support received for children from another relationship, and a new spouse’s earnings generally do not count as gross income.
When Can the Court Depart from the Guideline Amount?
California courts usually order the amount produced by the statewide formula. A parent who requests a different amount must prove that California law permits the departure. The court may depart from the formula in circumstances that include:
- The parents agree to another amount;
- The paying parent earns an extraordinarily high income, and the formula amount would exceed the child’s needs;
- The expenses a parent covers fail to contribute to the child’s needs at a level that matches the time the child spends in that parent’s care;
- Different children follow different parenting schedules;
- The child has special medical or other needs; or
- Equal parenting time produces unusual housing differences.
To adjust the amount, the parent requesting the departure must present evidence showing why the specific circumstances justify it.
How Is Child Support Calculated When One Parent Has Low Income?
California law allows the court to reduce child support when the paying parent has a very low income. This low-income adjustment decreases the amount that the statewide formula would otherwise require the parent to pay.
The adjustment generally applies when the paying parent’s net monthly disposable income falls below the gross monthly income someone would earn by working full-time at California’s minimum wage. California law provides a range within which the court may reduce the formula amount. The judge considers how the reduction would affect both parents and whether the remaining payment would adequately contribute to the child’s needs. The court may decline to apply the full reduction if the evidence shows that doing so would produce an unfair result.
A parent cannot necessarily obtain a lower child support order by choosing not to work, reducing work hours, or accepting a lower-paying job. When a parent chooses to earn less than they reasonably could, the court may sometimes calculate support based on earning capacity rather than current income.
How Is Child Support Calculated When One Parent Has High Income?
California usually requires an extraordinarily high-earning parent to pay the amount produced by the statewide formula. However, that parent may ask the court to order a lower amount if the formula amount exceeds the child’s needs.
The high-earning parent must prove their income is extraordinarily high and that the formula would provide more money than the child needs. The other parent does not have to prove that the full guideline amount is necessary. California allows a child to share in a parent’s standard of living. The court may therefore consider the housing, education, childcare, transportation, health care, travel, activities, and other opportunities that the income can reasonably provide.
Which Expenses May Be Added to Child Support?
After determining the base child support amount, the court decides whether either parent must contribute to expenses outside the formula. California calls these expenses child support add-ons. Some are mandatory, while others depend on the child’s circumstances:
- Work-related childcare,
- Uninsured health care,
- Educational or special needs, and
- Parenting-time travel.
Courts generally divide qualifying add-ons according to each parent’s share of their combined adjusted net income.
Get Help Addressing Child Support in California
If you need help with calculating, establishing, or adjusting child support, Pakpour Banks LLP can help. We can help you document income, calculate parenting time, evaluate proposed add-ons, and present a request to establish or modify support. Our award-winning, top-rated team provides individualized representation backed by more than a decade of experience in California family law. Contact us to discuss your child support matter.
Legal References Used to Inform This Page
To ensure the accuracy and clarity of this page, we referenced official legal resources during the content development process:
- California Family Code § 4053.
- California Family Code § 4055.
- California Family Code § 4057.
- California Family Code § 4062.
Brian enters the family law profession with a refreshing approach to these proceedings: heal families; don’t destroy them. In some cases, this means the family is going to look different than it did before. In other cases, this means a new family is created where there was none before. Either way, individuals should leave family court knowing their voices were heard, and with healthy attitudes about themselves and those they love.