A mother can request to stop child support, but the court must approve the change — it is not something either parent can do unilaterally

In California, child support is a court order, not an agreement between parents that either one can cancel on their own. If a mother wants to stop receiving child support or if a father wants to stop paying it, one parent must file a formal request with the court to modify or terminate the order. The court will only grant this if there is a substantial change in circumstances — such as a significant drop in income, the child reaching age 18, or a major shift in custody.

The key point: straightforward agreeing between yourselves to stop child support does not make it legal. If the paying parent stops without a court order, they can face wage garnishment, tax intercepts, and other enforcement actions. If the receiving parent agrees to accept less or nothing, they cannot later ask the court to enforce the original amount — but the paying parent still owes what the current order says until a judge changes it.

Key Takeaways

  • A mother cannot unilaterally cancel child support; the court must modify or terminate the order through a formal request.
  • The court will only change child support if there is a substantial change in circumstances, such as a job loss, income increase, or the child turning 18.
  • A verbal or written agreement between parents to stop child support is not legally binding and does not protect the paying parent from enforcement.
  • The parent requesting the change must file a Request to Modify or Terminate Support (Form FL-300 or similar) with the court that issued the original order.
  • Child support automatically ends when the child turns 19, graduates high school, or becomes self-supporting, whichever comes first — unless the child is still in high school at 19.

When child support ends automatically in California

California law sets an automatic end date for child support in most cases. Child support stops when the youngest child turns 19, graduates from high school, or becomes self-supporting — whichever happens first. If a child is still enrolled in high school at age 19, support continues until graduation or age 19.5, whichever is earlier.

This means a mother does not need to file anything if the child has already reached one of these milestones. However, if the paying parent continues to pay after the order has ended, the mother should not accept those payments without clarifying the situation, because it can create confusion about whether a new informal agreement exists.

If the child is still a minor and has not reached any of these points, the order remains in effect until the court modifies it or one of these conditions is met.

How to request termination or modification of child support

The parent seeking the change must file a Request to Modify or Terminate Support with the court that issued the original child support order. In California, this is typically done using Form FL-300 (Request to Modify, Reduce, or Terminate Support) or Form FL-301 (Stipulation to Modify, Reduce, or Terminate Support) if both parents agree.

The filing parent must also serve the other parent with a copy of the request and provide proof of service to the court. If the parents agree on the change, they can file a stipulation together, which speeds up the process. If they disagree, the court will hold a hearing and decide based on the evidence presented.

The request must explain the change in circumstances — for example, "Father's income has decreased by 40% due to job loss" or "The child is now 19 and no longer in high school." Without a documented reason, the court is unlikely to grant the request.

What counts as a substantial change in circumstances

California courts do not modify child support for minor reasons. The change must be substantial and material. Common examples include a job loss or significant income reduction of at least 10 to 15 percent, a major increase in income, a significant change in custody or visitation time, the child reaching the age of majority, or a serious health condition affecting either parent's ability to work or care for the child.

A parent straightforward deciding they no longer want to pay, or a mother deciding she no longer wants to receive support, is not a substantial change. The court's priority is the child's welfare and financial stability, not the preferences of either parent.

If a parent's income has changed, they should gather recent pay stubs, tax returns, and documentation of the change. If custody has shifted, they need proof of the new arrangement. The more specific and documented the change, the stronger the case for modification.

What happens if parents agree to stop child support informally

If a mother and father agree verbally or in writing to stop child support without going to court, that agreement is not legally binding on either party. The paying parent is still legally obligated to pay the amount in the court order. If they stop paying, the mother can report them to the Department of Child Support Services, and enforcement actions can follow — including wage garnishment, tax intercepts, and liens.

Conversely, if the mother agrees to accept less or nothing and the paying parent later faces enforcement action, the informal agreement does not protect them. The court order is what matters, not what the parents agreed to outside of court.

The only way to make a change legally binding is to file a modification request with the court and have a judge sign a new order. This protects both parents and ensures the arrangement is enforceable.

The role of the Department of Child Support Services

If child support was established through the court or if either parent receives public information, the Department of Child Support Services (DCSS) is involved in enforcement. This means that even if the mother wants to stop receiving support, the DCSS may continue to pursue collection on behalf of the state, especially if public funds were used.

If the mother wants to stop support and the DCSS is involved, she may need to request that the case be closed or dismissed. However, the DCSS does not have the authority to unilaterally close a case — the court must do so. The mother would still need to file a modification request to terminate support.

If child support was handled privately between the parents without court involvement, the DCSS is not involved, and the parents have more flexibility — but they still need a court order to make any change legally binding.

Frequently Asked Questions

Can a mother and father agree to stop child support without going to court?

They can agree, but the agreement is not legally binding. The paying parent is still obligated to pay the court-ordered amount. To make the change legal and enforceable, both parents must file a modification request with the court and have a judge sign a new order.

What if the father loses his job and cannot pay?

Job loss is a substantial change in circumstances. The father should file a modification request when ready and provide proof of the job loss. The court may reduce or temporarily suspend support while he is unemployed. If he stops paying without filing, he can face enforcement action and accumulate arrears.

Does child support stop automatically when the child turns 18?

Not always. In California, support continues until the child turns 19, graduates from high school, or becomes self-supporting — whichever comes first. If the child is still in high school at 18, support continues until graduation or age 19.5, whichever is earlier.

Can a mother ask the court to stop support if she remarries?

Remarriage alone is not a substantial change in circumstances that would justify terminating child support. The court focuses on the child's needs and the paying parent's income, not the receiving parent's marital status. However, if remarriage affects custody or the child's living situation, that could be relevant.

What if the mother is not using the child support money for the child?

How the receiving parent spends child support is generally not grounds for the paying parent to stop payment. The court assumes the money goes toward the child's housing, food, and care. If there is evidence of abuse or neglect, that is a separate issue involving child protective services, not child support modification.