Connecticut Child Support Guidelines: How Support Is Calculated

How Connecticut Calculates Child Support

If you are going through a separation or divorce in Connecticut and children are involved, one of the first questions is almost always: how much child support will I pay—or receive? Connecticut follows a structured, math-based system called the income shares model, backed by mandatory statewide guidelines. Understanding how those guidelines work can help you prepare, avoid surprises in court, and make sense of what a judge can and cannot do.

The Income Shares Model: Both Incomes Count

Connecticut's child support system rests on a clear principle: a child should receive roughly the same level of financial support he or she would have received if the parents had stayed together. To achieve that, the court looks at both parents' incomes—not just the income of the parent who will be paying.

Here is how it works in practice:

1. Calculate each parent's net weekly income. Under Connecticut regulations, "gross income" is broadly defined and can include wages, self-employment earnings, and other sources. Allowable deductions—such as taxes and certain mandatory withholdings—are subtracted to arrive at each parent's net weekly income.
2. Add the two net incomes together. This combined figure is the starting point for the guidelines calculation.
3. Look up the basic support obligation. Connecticut's Schedule of Basic Child Support Obligations—part of the Connecticut Child Support and Arrearage Guidelines (effective July 1, 2015)—assigns a total support amount based on the combined net weekly income. The schedule covers combined weekly income from $50 to $4,000 per week.
4. Split the obligation proportionally. Each parent's share of the total obligation mirrors their share of the combined income. The parent without primary physical custody typically pays their share directly to the other parent.

The Commission for Child Support Guidelines, established by Conn. Gen. Stat. § 46b-215a, oversees the guidelines and is directed by law to review and revise them every four years. The current published version is the 2015 guidelines, so if you are reading this after that period, confirm with your Connecticut court or the Department of Social Services whether a revised schedule is currently in effect.

When Combined Income Exceeds the Schedule

When both parents' combined net weekly income is above the top of the schedule, Connecticut does not simply cap support at the schedule's upper limit. Instead, the court sets the amount case by case, and the obligation that corresponds to the schedule's highest income level serves as the floor—the minimum presumptive amount. Higher combined incomes generally mean higher support orders, set with judicial discretion.

Protecting Low-Income Parents: The Self-Support Reserve

Connecticut's guidelines include a self-support reserve designed to ensure that a support order does not leave the paying parent unable to meet their own basic needs. The reserve is tied to the federal poverty level for one person. If a parent's income falls near or below that threshold, specific rules apply before any obligation is set. If you are in that situation, make sure the court has accurate, current income documentation for both parents before any hearing.

The Rebuttable Presumption: The Guidelines Are the Default

Under Conn. Gen. Stat. § 46b-215b and accompanying regulations, there is a rebuttable presumption that the amount produced by the guidelines is the correct child support amount. A judge can only order a different amount by making a specific written finding on the record that applying the guidelines would be inequitable or inappropriate, based on the deviation criteria established by the Commission for Child Support Guidelines.

In plain terms: the guideline number is not a suggestion. A judge starts there, and if either parent wants a different figure, they need a documented reason that is specifically recognized under Connecticut law—not simply a belief that the number seems too high or too low. The specific grounds for deviation are set out in the Commission's regulations; confirm the current list with your Connecticut court or the Commission before relying on any particular factor.

Modifying an Existing Child Support Order

Life changes, and Connecticut law allows either parent to return to court to seek a modification. Under Conn. Gen. Stat. § 46b-86(a), a modification requires showing either:

• A substantial change in circumstances—such as a significant income change, a job loss, or a meaningful change in the child's needs—or
• That the current order substantially deviates from the guidelines—meaning what the guidelines would produce today differs materially from what the current order requires.

Connecticut law provides a concrete benchmark: there is a rebuttable presumption that a difference of 15% or more between the current order and the guideline amount is a substantial deviation, and a difference of less than 15% is presumed not to be substantial. This gives parents a clear way to assess whether seeking a modification is likely to succeed.

Critical limit on modifications: Past-due child support that has already accrued cannot be reduced or wiped out retroactively. Under federal law (42 U.S.C. § 666(a)(9)(C)—often called the Bradley Amendment), once support is past due, it becomes a fixed debt. A court order modifying support changes only future payments, never the arrears already owed.

How Connecticut Enforces Child Support

Connecticut has layered enforcement tools, backed by both state and federal authority.

• Wage withholding: Child support orders in Connecticut are enforced through automatic income withholding under Conn. Gen. Stat. § 52-362. Support is deducted directly from the paying parent's paycheck before they ever receive it.
• Federal enforcement framework: The federal Title IV-D program (42 U.S.C. §§ 654, 659, 666) requires states to maintain enforcement tools including paternity establishment, license suspension, and liens on property. It also ensures that federal wages and benefits can be garnished for child support obligations.
• Federal tax refund intercept: Under 42 U.S.C. § 664, federal tax refunds can be intercepted and applied to past-due child support.
• Bankruptcy does not discharge child support: Under federal bankruptcy law, child support is classified as a "domestic support obligation" that cannot be eliminated in bankruptcy (11 U.S.C. § 523(a)(5)) and receives the highest priority among unsecured claims (11 U.S.C. § 507(a)(1)). An ex-spouse filing for bankruptcy does not extinguish what they owe in support.
• Interstate enforcement: If a parent moves to another state, federal law (28 U.S.C. § 1738B) requires every state to honor and enforce Connecticut's child support order. Connecticut has adopted the Uniform Interstate Family Support Act (UIFSA) to address the procedural details when parents live in different states.

Free Help Through the State's IV-D Program

You do not need to hire a private attorney to open a child support case or enforce an existing order. Connecticut's Department of Social Services administers the state IV-D child support program, which provides services at no cost to eligible participants. Services can include locating a non-custodial parent, establishing paternity, obtaining a new support order, and collecting payments through wage withholding or other enforcement tools. Contact the Connecticut Department of Social Services to find out what the program can do for your situation.

What You Can Do in Connecticut

1. Gather income documentation for both parents before any court date. The guidelines calculation depends on accurate net income figures for both parties. Collect recent pay stubs, tax returns, and documentation of any additional income sources.
2. Review the Schedule of Basic Child Support Obligations. The schedule is publicly available through the Connecticut Judicial Branch. Using both parents' approximate net weekly incomes, you can get a working estimate of where a court is likely to land before you walk into a hearing.
3. Document any deviation factors—on either side. If you believe the guideline amount would be inequitable in your situation, start collecting supporting documentation now. If the other parent is arguing for a deviation, know that they carry the burden of demonstrating a specific recognized ground on the record.
4. Use the 15% benchmark when evaluating a modification. If your income or the other parent's income has shifted since the last order, calculate what the guidelines would produce today. A difference of 15% or more from the current order creates a rebuttable presumption that modification is appropriate.
5. Contact DSS if an order is going unpaid. The Department of Social Services IV-D program can pursue enforcement—including wage withholding and federal tax refund intercept—at no cost to you.
6. Keep records of every payment, in both directions. Whether you are paying or receiving support, document every transaction. Disputes about arrears are much easier to resolve when you have a clear paper trail.

Time-sensitive note: The current Connecticut Child Support and Arrearage Guidelines Schedule has been in effect since July 1, 2015. The Commission for Child Support Guidelines is required by statute to review and revise the guidelines every four years. Before relying on any specific dollar figure from the published schedule, confirm with your Connecticut court or the Department of Social Services that the version you are using is still current.

---

This article is for general informational purposes only and does not constitute legal advice. For guidance specific to your situation, consult a licensed Connecticut family law attorney or contact the Connecticut Department of Social Services.