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Connecticut, United States

Connecticut Child Support: A Parent's Guide

How child support works in Connecticut, in plain English: the weekly income shares guidelines, modification, and BCSE/SED enforcement.

Legal sources reviewed: August 10, 2026

In short: Connecticut calculates support on a weekly basis, combining both parents' adjusted net weekly incomes and referencing a schedule covering combined incomes from $50 to $4,000/week. Every case, even an agreed one, requires the mandatory worksheet, and enforcement is split between an administrative arm (BCSE) and a court-based arm (SED), each with its own set of tools.

This is an educational overview written for parents, not lawyers. It isn't legal advice. For anything beyond general understanding, talk to a licensed Connecticut family law attorney.

What Connecticut generally provides

Connecticut requires both parents to complete the Worksheet for the Connecticut Child Support and Arrearage Guidelines (Form JD-FM-220), making full financial disclosure of gross weekly income. The adjusted net weekly incomes are combined into a combined net disposable income figure, simulating what would be available if the parents shared a household.

Important terminology

  • Form JD-FM-220 (CCSG-1): Connecticut's mandatory worksheet, required in every case with minor children, even if support is waived.
  • Combined net disposable income: the weekly figure used to look up the basic obligation on the state's schedule.
  • BCSE / SED: the Bureau of Child Support Enforcement (administrative) and the Support Enforcement Division (court-based), Connecticut's two enforcement arms.

How the calculation works

A weekly, not monthly or annual, framework

Unlike many states that calculate on a monthly basis, Connecticut's guidelines run on weekly income figures throughout, from the worksheet's gross income disclosure to the final Schedule of Basic Child Support Obligations lookup.

The schedule's range

The Schedule of Basic Child Support Obligations covers combined net weekly incomes from $50 to $4,000, with basic obligation amounts from $229/week for one child up to $1,101/week for six children at the $4,000 maximum. For example, a combined net weekly income of $1,000 produces a basic obligation of $229/week for one child. Each parent's share is proportional to their percentage of the combined income, a parent earning 60% of combined income pays 60% of the obligation.

Mandatory even when support is waived

Every divorce involving minor children requires the completed worksheet, regardless of whether the parents have agreed to waive child support entirely, it's a required filing, not optional documentation.

Requesting or defending a modification

The Support Enforcement Division (SED) is responsible for reviewing existing support orders and can assist parents in requesting a modification. Where the case involves only child support, it goes before a family support magistrate, and each side presents information and evidence about their financial condition before the magistrate establishes or modifies the order. See the child support calculator and guideline finder for jurisdiction-specific calculation sources and guidance.

How enforcement works

Connecticut splits enforcement between two arms. The Bureau of Child Support Enforcement (BCSE) performs administrative enforcement: wage withholding, lien placement, credit reporting, lottery offset, income tax refund withholding, and capias mittimus (civil arrest). The Judicial Department's Support Enforcement Division (SED) handles court-based enforcement: automated enforcement, wage withholding in established cases, contempt, criminal actions, and account audits. If an obligor becomes more than 30 days delinquent, BCSE can begin withholding after notifying the obligor and offering the right to a court hearing.

Common questions

Do we have to file the worksheet if we're not asking for support? Yes, Connecticut requires the completed worksheet in every case with minor children, even where the parents have agreed to waive support.

What's the difference between BCSE and SED? BCSE handles administrative tools (withholding, liens, credit reporting) while SED handles court-based enforcement (contempt, criminal actions), and both may be involved depending on how a case is being pursued.

What if my co-parent isn't paying? You can pursue enforcement through either BCSE (administrative) or SED (court-based), depending on which tools best fit your situation.

Practical considerations

Because Connecticut's schedule and worksheet operate on weekly figures rather than the monthly numbers used elsewhere, make sure any outside calculator or estimate you're using is actually built for Connecticut's weekly framework, not converted loosely from a monthly model. For the custody rules underlying the parenting-time side of these calculations, see the Connecticut custody guide.

Official Connecticut resources

FAQ

Questions, answered

This information is provided for educational purposes only and is not legal advice. Family law varies by individual circumstances and may change over time. Consult a qualified attorney or appropriate official resource for advice about your situation.