Child support calculators / Oregon
Oregon child support
calculator
Free guideline estimate under Oregon's official child support guidelines (controlling authority: OAR 137-050-0700 to -0765). Built for family law attorneys and their staff. No account required, and nothing you enter is stored.
Overnights always total 365, so changing one side updates the other.
Get the line-by-line worksheet free for 14 days, with the guideline edition and citation (OAR 137-050-0700 to -0765)
- Printable worksheet with the full line-by-line calculation
- Guideline edition and controlling-authority citation on the printout
- Adjustments detail: parenting-time credit, add-on allocation, deductions
- Save calculations to matters, plus spousal support and property division
14-day free trial · credit card required · every feature included · see pricing
Informational estimate for licensed attorneys and their staff — not legal advice, not a guarantee of any court outcome. Verify against your jurisdiction’s official guidelines worksheet before relying on it.
How Oregon calculates child support
Oregon's child support guidelines are established by OAR 137-050-0700 to -0765. Oregon uses the income shares model, which combines both parents’ incomes and allocates the basic support obligation between them in proportion to each parent’s share of the combined income.
This calculator applies the current guideline edition: OAR 137-050 scale eff. 1/4/2010; rules through the 7/1/2026 compilation (DOJ 16-2026).
The result is the presumptive guideline amount, the starting point a Oregon court uses before considering deviation factors. The full line-by-line worksheet, guideline edition, and statutory citation are available in Aequis with a 14-day free trial (credit card required).
Oregon child support FAQ
How is child support calculated in Oregon?
Oregon sets child support under its official guidelines (OAR 137-050-0700 to -0765), which follow the income shares model. The guideline produces a presumptive monthly amount from the parents' incomes, the number of children, and inputs such as parenting time, childcare, and health insurance costs.
Is this the exact amount a Oregon court will order?
No. This is an informational estimate of the presumptive guideline amount. Courts can deviate based on statutory factors, and official worksheets may require inputs this calculator does not collect. Always verify against the official guidelines worksheet before relying on any number.
What income counts for child support in Oregon?
Guidelines generally start from each parent's gross income from most sources, with their own definitions, exclusions, and deductions. This calculator uses gross monthly income; consult OAR 137-050-0700 to -0765 for what Oregon includes.
Do overnights affect child support in Oregon?
Many jurisdictions adjust the obligation for parenting time once overnights pass a threshold, and this calculator applies Oregon's guideline treatment of overnights where the guideline provides one. The exact effect depends on Oregon's formula and the parents' incomes.
Handling this without an attorney? CaseForward, from the makers of Aequis, offers guided self-help for divorce, custody, and child support.
CaseForward is a self-help document-preparation service, not a law firm, and does not provide legal advice.
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