Calculation is client-side, income figures are never transmitted or stored.
How Rhode Island Child Support Is Calculated
- Add both parents' net monthly income (after Rhode Island's own Gross-to-Net Conversion Table) to get combined income, then look up the Schedule of Basic Child Support Obligations for the total number of children.
- Each parent's share of that amount is their percentage of combined net income.
- Rhode Island's schedule presumes the noncustodial parent has at least 20% of the overnight parenting time. When both parents have at least a 49% share of parenting time, a different calculation applies (Administrative Order 2018-01), not modeled here.
- The schedule already builds in a $250/year per-child allowance for ordinary medical expenses; childcare and most other health costs are added separately.
- Above $40,000/month combined net income, the schedule does not extend automatically -- courts determine the amount case-by-case.
Rhode Island Child Support Worksheet Walkthrough
Example: Parent A has net monthly income of $2,500, Parent B has net monthly income of $1,700 (combined $4,200). There are four children, who live primarily with Parent B.
- Combined net monthly income: $2,500 + $1,700 = $4,200.
- Schedule of Basic Child Support Obligations at $4,200 combined, four children: $1,603.
- Parent A's income share: $2,500 / $4,200 = 59.5%.
- Parent A pays: $1,603 x 59.5% = $954/month.
How This Calculator Works — Formula & Constants
Source: Rhode Island Family Court — Administrative Order 2023-02 · Calcul déterministe — no AI, no arbitrary estimate.
Constants used
| Constant | Value | Source |
|---|
Formula
base_obligation = schedule_lookup(combined_income, children)
share_B = parentB_income / combined_income
total_obligation = base_obligation + childcare_cost + health_insurance_cost
obligation_B = total_obligation × share_B
Deterministic calculation based on Rhode Island's official guideline schedule table. Verify against Rhode Island's official calculator for a court-ready figure.
FAQ
How is child support calculated in Rhode Island?
Add both parents' net monthly income (after Rhode Island's own Gross-to-Net Conversion Table) to get combined income, then look up the Schedule of Basic Child Support Obligations for the total number of children. Each parent's share of that amount is their percentage of combined net income. Rhode Island's schedule presumes the noncustodial parent has at least 20% of the overnight parenting time. When both parents have at least a 49% share of parenting time, a different calculation applies (Administrative Order 2018-01), not modeled here. The schedule already builds in a $250/year per-child allowance for ordinary medical expenses; childcare and most other health costs are added separately. Above $40,000/month combined net income, the schedule does not extend automatically -- courts determine the amount case-by-case.
Does Rhode Island use gross or net income?
Net income. Rhode Island converts gross income to net using its own published Gross-to-Net Conversion Table (accounting for taxes and other standard deductions) before applying the Schedule of Basic Child Support Obligations.
What is Rhode Island's Self-Support Reserve?
$1,333/month (based on federal poverty guidelines) as of the 2023 schedule. The schedule's own lowest combined-income row ($1,350) reflects this, applying a flat $50/month minimum regardless of the number of children.
How does shared parenting time affect Rhode Island child support?
The standard schedule assumes the noncustodial parent has at least 20% of the overnights. When both parents have at least a 49% share of parenting time, Administrative Order 2018-01 provides a different calculation method, which this calculator does not model.
Methodology & Source
Formula model: income shares. Effective 2023-07-01, guideline version 2023-RI-v1, last reviewed 2026-07-13.
Official source: Rhode Island Family Court — Administrative Order 2023-02 (RI Gen. Laws § 15-5-16.2(a); Family Court Administrative Order 2023-02).
Rhode Island's schedule presumes a 'standard' parenting time arrangement where the noncustodial parent has at least 20% of the overnights. This calculator does not model the different calculation that applies when both parents have at least a 49% share of parenting time (Administrative Order 2018-01), Split Custody, or the discretionary add-ons for a parent's extraordinary medical expenses, pension/retirement payments, life insurance premiums, or assigned marital debts (Worksheet lines 3a-3e). Above $40,000/month combined income, Rhode Island's guideline schedule does not extend automatically -- courts determine the amount case-by-case. The schedule already includes a per-child allowance of $250/year for ordinary medical expenses, and is indexed by NET income (after the state's own Gross-to-Net Conversion Table), not gross.
Guideline figures transcribed from the primary source above and cross-checked against Rhode Island's official calculator/worksheet for multiple test scenarios — see our verification methodology.