Franklin County, Missouri Child
Support Estimator

Missouri child support is calculated under statewide Income Shares guidelines, but the filing, review, and enforcement process is local. Parents in Franklin County use the same statewide formula as the rest of Missouri, then work through the county family court or child support agency process for orders, modifications, and enforcement.

Franklin County ranks 12th by population among 115 Missouri counties. That matters for scheduling, clerk procedures, local forms, and how quickly a support order or modification moves through the court calendar.

Use this page to estimate the guideline amount first, then verify filing steps with the local court before submitting paperwork.

Franklin County's larger population can mean higher case volume, more specialized family-law practitioners, and more formal local procedures for child support hearings.

Franklin County Circuit Court, Probate Division is located at 400 E Main St, Union MO 63084. The clerk can be reached at (636) 583-6355.

Check the court website for current child support forms, hearing procedures, and filing instructions.

The core inputs are each parent's income, the number of children, health insurance premiums, work-related child care, existing support obligations, and parenting time. Missouri's calculator model is Income Shares.

Governing authority: Mo. Rev.

Stat. § 452.340; Missouri Form 14.

County location does not usually change the statewide formula, but it does determine where parents file, which clerk reviews paperwork, and which local judge or hearing officer applies the guidelines. Income Shares model under Mo.

Rev. Stat. § 452.340 and Missouri Form 14 using both parents' combined monthly adjusted gross income and the Form 14 Schedule of Basic Child Support Obligations.

The schedule covers combined monthly adjusted gross income up to $30,000; above that, the court may deviate. Adjusted gross income deducts pre-existing court-ordered child support and maintenance obligations.

Missouri's Form 14 worksheet is distinctive: it requires listing each parent's income, the presumed child support amount, and then any deviations requested with written findings. Parenting time credit: a proportional reduction applies when the non-custodial parent has 35%+ of overnight parenting time annually.

Child care and extraordinary medical expenses added proportionally. Administered by the Missouri Department of Social Services Family Support Division (FSD) at dss.mo.gov/cse.

Statute: Mo. Rev.

Stat. § 452.340; Mo. Sup.

Ct. R. 88.01 (Form 14).

Run the calculator with monthly or weekly income figures that match the official Missouri worksheet. If a parent is self-employed, unemployed, or paid irregularly, gather tax returns, pay stubs, and proof of benefits before relying on the estimate.

Parenting time can affect child support because many states adjust the payment when the paying parent has substantial overnights. Enter the actual schedule, not the schedule you expect to negotiate later.

Parents in Franklin County should keep a written parenting-time calendar, school schedule, holiday rotation, and transportation plan. Those documents help the court compare the calculator estimate with the real custody arrangement.

If custody is still disputed, treat the estimate as a planning number. A final Missouri child support order can change once the court sets income findings, parenting time, insurance credits, and child care allocations.

A child support estimate is not a court order. To change an existing order, a parent usually must file a modification request and show a qualifying change in income, custody, health insurance, child care costs, or another guideline factor.

For enforcement, Missouri may use income withholding, payment records, tax refund interception, license actions, or contempt proceedings depending on the facts and the agency or court handling the case.

Before filing in Franklin County, compare your calculator result with the current order and collect proof for each input. Courts generally need documents, not estimates alone, before changing a support obligation.

Child support often intersects with custody, alimony, property division, and divorce costs. Use the Missouri Custody Time Calculator to model overnights, then compare support with the Missouri Alimony Calculator and Missouri Divorce Cost Estimator.

For statewide guidance, start with the Missouri Child Support Calculator. For local comparison, review nearby county pages so you understand how court process and filing logistics vary across Missouri.

Compare Franklin County with other high-volume Missouri jurisdictions: St. Louis County, Jackson County, [St.

Charles County](/child-support-estimator/missouri/st-charles-county), City of St. Louis.

Each county page uses the same statewide guideline framework and adds local context for filing, court process, and related family-law planning.