How South Dakota Calculates Child Support

South Dakota uses the Income Shares model to determine child support obligations. This page explains the guidelines, formula, and key factors.

Model Type

Income Shares

Income-shares model based on combined net monthly income and number of children per SDCL § 25-7-6.2 and related statutes; each parent's obligation prorated by share of combined net income; adjusted for parenting time and add-ons.

Income Basis & Definitions

Income Basis:

net

Number Of Children On Order

Selects the base-support amount from the South Dakota schedule.

Source: SDCL § 25-7-6.2: Schedule of basic support obligations

Parent A Income

Parent A net monthly income (gross minus taxes, mandatory deductions).

Source: SDCL § 25-7-6.3: Net income definition

Parent B Income

Parent B net monthly income.

Source: SDCL § 25-7-6.3: Net income definition

Parenting Time Handling

Custody Type Or Worksheet Selection

Calculator applies custody arrangement adjustment.

Source: SDCL § 25-7-6.10: Shared physical custody

Parenting Time Input

Number of overnights per year for shared custody adjustment.

Source: Parenting time input

Deductions & Adjustments

Other Child Support Or Dependents Adjustment

Preexisting support obligations deducted.

Source: Other support obligations

Spousal Support Adjustment

Alimony paid deducted from income.

Source: Alimony deduction

Add-Ons & Allocation

Work Related Childcare Costs

Childcare costs allocated between parents.

Source: Childcare costs

Child Health Insurance And Uninsured Medical

Health insurance and uninsured medical expense allocation.

Source: Medical support

Caps, Minimums & Deviations

Income Cap And Above Cap Handling

Schedule caps at combined net income; above-cap at court discretion.

Source: Maximum schedule income

Deviation Factors And Findings

Deviation allowed per SDCL § 25-7-6.14; requires findings.

Source: SDCL § 25-7-6.14: Deviation criteria

Try the Calculator

Use our South Dakota child support calculator to estimate your obligation.

Official Sources

South Dakota Codified Laws Chapter 25-7 (Child Support)