Child Support in Oregon: How It's Calculated
Oregon uses the Income Shares Model to determine child support obligations. This guide walks through how the formula works, what factors Oregon courts consider, and how to modify or enforce an order — with links to official Oregon resources.
Income Shares Model in Oregon
Oregon uses the Income Shares Model under its Child Support Program guidelines. Both parents' gross incomes are combined and applied to the Oregon child support schedule to determine a combined basic obligation, which is then divided proportionally.
Oregon provides a parenting time credit when the non-primary parent has the child for 24% or more of the overnights (approximately 88 overnights per year). The credit grows as overnight time increases. Oregon's guidelines also address imputation of income for voluntarily underemployed or unemployed parents.
Key Factors Oregon Courts Consider
- Both parents' gross monthly income
- Number of children
- Parenting time — 24%+ overnights triggers a parenting time credit
- Child's health insurance costs
- Work-related childcare expenses
- Any extraordinary expenses
- Income imputation for voluntarily unemployed or underemployed parents
Official Oregon Resources
Get an accurate number from an official source
Child support calculations are complex and fact-specific. For an accurate figure, use Oregon's official worksheet or consult a licensed family law attorney. This guide explains the framework — it does not produce a binding calculation.
Step-by-Step: How Oregon's Formula Works
Here is how Oregon applies the Income Shares Model to calculate a child support obligation, step by step:
1. Determine each parent's income
Oregon starts by calculating each parent's income — gross income (before taxes). The specific definition of income is set by Income Shares Model.
2. Combine incomes and find the basic obligation
Both parents' incomes are combined and compared to Oregon's child support schedule. The schedule produces a basic child support obligation based on combined income and the number of children.
3. Add health insurance and childcare costs
Health insurance premiums paid for the child and work-related childcare expenses are added to the basic obligation before it is divided between parents.
4. Divide proportionally based on income share
The total obligation is allocated between the parents in proportion to each parent's share of combined income. The parent with the higher income share bears a larger portion of the obligation.
5. Apply parenting time credits
Parenting time — 24%+ overnights triggers a parenting time credit parenting time credit when the non-primary parent has the child for 24% or more of the overnights (approximately 88 overnights per year).
Document Everything for Your Oregon Case
Oregon courts rely on documented records — parenting time logs, expense receipts, and payment histories. ReplyCalmly helps you track all of it and generate organized, exportable reports.
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