
Missouri Child Support is a legal obligation designed to ensure that children of separated or divorced parents receive the financial assistance they need for a stable upbringing. The Missouri Family Support Division (FSD) manages the child support system, ensuring that both custodial and noncustodial parents contribute to the financial needs of their children. Missouri Child support is typically ordered by the court and remains in effect until the child reaches the age of emancipation, which is usually 18 years old but may extend until 21 years if the child is still in school or has special circumstances. In Missouri, child support covers basic needs like food, housing, healthcare, education, and other essential expenses, ensuring that the child’s well-being is prioritized despite changes in the parents’ living arrangements. Understanding how child support works, how it is calculated, and how modifications can be requested is crucial for parents navigating the child support system in Missouri.
How Does Missouri Child Support Work?
In Missouri, child support is the financial contribution that the noncustodial parent makes to help cover the costs of raising a child. The custodial parent—the parent with whom the child lives most of the time—receives these payments to help provide for the child’s needs. Child support is typically established through a court order during divorce or separation proceedings, but it can also be arranged through the Missouri Family Support Division (FSD).
The key purpose of child support is to ensure that the child maintains a stable standard of living, regardless of the parents’ relationship. Child support can cover a wide range of expenses, including:
- Basic necessities like food and clothing.
- Housing and utilities.
- Healthcare costs, including insurance and medical expenses.
- Education costs.
- Extracurricular activities.
Once a court establishes a child support order, payments are generally made on a monthly basis. The noncustodial parent is legally obligated to make these payments on time. Missouri takes child support enforcement seriously, and failure to pay child support can result in wage garnishment, interception of tax refunds, license suspension, and even jail time.

Who is Eligible for Missouri Child Support?
Eligibility for child support in Missouri is determined based on the custodial arrangement and the financial needs of the child. The parent or legal guardian who has primary physical custody of the child—meaning the child lives with them most of the time—is typically eligible to receive child support.
The key eligibility factors include:
- Custodial Parent: The custodial parent is generally the one who receives child support to help cover the costs of raising the child.
- Noncustodial Parent: The noncustodial parent, who does not have primary custody, is required to pay child support to help provide for the child’s needs.
- Child’s Age: In Missouri, child support usually continues until the child turns 18 years old. However, support may be extended until age 21 if the child is still in school, including college or vocational training, or if the child has special needs that require ongoing support.
Parents who are separated, divorced, or who have never been married but share a child may be eligible to establish child support through the courts or through the Family Support Division.
How to Calculate Child Support in Missouri?
Missouri uses a formula known as the “Income Shares Model” to calculate child support. This model estimates the amount of financial support the child would have received if the parents were still living together. It takes into account both parents’ incomes, the number of children, and various expenses.
Here’s how child support is typically calculated in Missouri:
- Determine Both Parents’ Incomes: The court will look at the gross income of both parents. Gross income includes wages, salaries, bonuses, commissions, and other forms of income, such as rental income or social security benefits.
- Apply the Missouri Child Support Guidelines: The court uses a set of guidelines provided by the state to determine the appropriate child support amount. These guidelines account for the combined parental income and assign each parent a percentage of the total support obligation based on their income.
- Adjust for Additional Expenses: Adjustments may be made for certain expenses, such as:
- Health insurance premiums for the child.
- Childcare expenses needed while the custodial parent is working or in school.
- Extraordinary medical expenses or costs related to the child’s education or extracurricular activities.
- Final Child Support Calculation: After considering income, expenses, and adjustments, the final child support amount is determined. This amount is typically expressed as a monthly payment that the noncustodial parent must make.
The Missouri Child Support Calculator, available on the FSD website, can help parents estimate their child support payments based on the guidelines.

How to Apply for Missouri Child Support?
There are several ways to apply for child support in Missouri:
- Online Application: The quickest way to apply is through the Missouri Child Support Services online portal. You can create an account, fill out the application form, and submit the required documents online.
- In-Person Application: Parents can apply in person at their local Missouri Family Support Division (FSD) office. The staff at the office will assist you in completing the application and submitting the necessary paperwork.
- Mail Application: You can also download the child support application from the FSD website, complete it, and mail it to your nearest FSD office.
After applying, the FSD will review your case and, if needed, establish paternity. Once all necessary information is collected, the FSD will issue a child support order.
How to Get Your Child Support Adjusted in Missouri?
Missouri allows parents to request a modification to their child support order if there is a significant change in circumstances. These changes may include:
- A substantial change in income for either parent (e.g., job loss, a significant raise).
- Changes in the child’s financial needs, such as medical or educational expenses.
- A change in the custody arrangement, where the child now spends more or less time with one parent.
To request an adjustment, either parent can file a petition for modification with the court. The court will review the new circumstances and determine if an adjustment is warranted. Both parents will be required to provide updated financial information.
What is the Missouri Child Support Modification Form?
The Missouri Child Support Modification Form is a legal document that allows parents to request a change in an existing child support order. If your circumstances have changed significantly since the original order was issued, you can use this form to request an increase or decrease in the child support amount.
To complete the modification form, you will need to provide:
- Personal details about both parents and the child.
- The current child support order and payment details.
- Documentation supporting your reason for requesting the modification (e.g., pay stubs, tax returns, medical bills).
Once completed, the modification form must be filed with the court. A hearing may be scheduled to review the case, and if approved, the child support order will be modified to reflect the new terms.