Child Support in Oregon: How It Works

Oregon uses the **Income Shares Model** (ORS 25.270–25.285), calculating each parent's obligation based on their proportion of combined gross income.

Core Formula

1. Determine each parent's adjusted gross income.
2. Apply **Basic Child Support Obligation** table (schedule based on combined income + number of children).
3. Prorate: Parent A % × Total Obligation = Parent A's share.

Adjustments & Add-Ons

• Health insurance premiums (child's portion).
• Work-related childcare costs.
• Extraordinary medical/dental/educational expenses.
• Parenting time credit (overnights > 35% adjusts obligation).

Deviation Factors

Court may deviate for: high income (> $15k/mo combined), special needs, other dependents, tax consequences, written agreement.

Enforcement & Modification

• Oregon Child Support Program (OCSP) administers, enforces (wage withholding, license suspension, passport denial).
• Review every 35 months or upon material change.

Use the Oregon Child Support Calculator for estimates. Legal advice recommended for contested cases.