Connecticut uses an income shares model based on combined net weekly income. The schedule covers combined net of $0–$4,000/week. Shared custody (109+ overnights, 30%) triggers a 1.5x multiplier cross-calculation.
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Connecticut calculates child support using the Income shares model using net weekly income established under CGS § 46b-215b. This is a statutory formula that leaves limited room for judicial discretion on the base calculation amount, ensuring consistency and predictability for families across the state.
Basic obligation from CT schedule based on combined net weekly income and number of children. Shared custody: cross-calculation with 1.5x multiplier for 109+ overnights.
The calculation begins with determining each parent's net disposable income, which includes virtually all sources of income minus taxes, mandatory payroll deductions, and certain hardship deductions. The court then applies the statutory formula using the time each parent has primary physical responsibility for the children and the applicable income allocation brackets.
Beyond the base formula amount, Connecticutrequires additional contributions for mandatory add-on expenses. These typically include childcare costs necessary for the custodial parent's employment or education, uninsured healthcare expenses for the children, and in some cases, educational and travel costs. These add-ons are split between parents in proportion to their respective incomes.
Primary statute: CGS § 46b-215b
Combined net weekly income schedule: $0–$4,000/week.
Shared custody threshold: 109 overnights (30%) with 1.5x multiplier.
Self-support reserve: approximately $278/week (federal poverty level).
Minimum order: $25/week.
Health insurance and childcare allocated proportionally.
Connecticut is an "all property" (kitchen sink) state — all property is divisible.
Uses NET WEEKLY income (not monthly) — unusual among states.
Answer a few questions about your income, custody, and children. Get your personalized estimate.
Residency Requirement
12-month residency requirement (CGS § 46b-44)
Mandatory Waiting Period
90-day mandatory waiting period after return of service
No-Fault Ground
Irretrievable breakdown (CGS § 46b-40(c))
State Income Tax
Progressive 3–6.99% (6 brackets)
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Connecticut uses the Income shares model using net weekly income under CGS § 46b-215b. Connecticut uses an income shares model based on combined net weekly income. The schedule covers combined net of $0–$4,000/week. Shared custody (109+ overnights, 30%) triggers a 1.5x multiplier cross-calculation.
Key factors include both parents' income, the number of children, custodial time share, mandatory add-on expenses (childcare, health insurance), and any applicable deductions. Combined net weekly income schedule: $0–$4,000/week.
Yes. Either parent can request a modification if there has been a material change in circumstances, such as a significant change in income, custody arrangements, or the needs of the child. The court will recalculate support using the same statutory formula.
Basic obligation from CT schedule based on combined net weekly income and number of children. Shared custody: cross-calculation with 1.5x multiplier for 109+ overnights.
Get a personalized child support calculation based on Connecticut's actual statutory formula.
Start My Free ConnecticutEstimate →This tool provides educational estimates based on Connecticut family law and does not constitute legal advice. Child support calculations are approximations of the statutory formula and may differ from court-ordered amounts. Consult a licensed Connecticut family law attorney before making decisions. Primary statute: CGS § 46b-215b.