Oregon Child Support Calculator
Calculate estimated child support using Oregon's official guidelines
About Oregon's Guidelines
Income Shares Model
Note: Parenting time credit for 92+ overnights
Key Information
- •Model: Income Shares
- •Last Updated: January 15, 2024
Common Deviation Factors
Monthly Income
Children & Custody
Additional Monthly Expenses
Estimates only — not legal advice. Consult a Oregon family law attorney for official calculations.
Official Oregon Court Forms
Download official court forms from the Oregon judiciary website. These are free, legally valid forms for your family court case.
Child Support Forms
Official petitions & worksheets
Modification Forms
Request changes to orders
Financial Disclosure
Income & expense statements
These links go to official Oregon court websites. Forms are free and provided by the state judiciary.
Oregon Child Support Guidelines
Oregon uses the Oregon Child Support Guidelines (OAR 137-050-0700 to 0765) to determine child support obligations. Under the Income Shares model, both parents' incomes are combined to estimate what the family would have spent on the child if the household were intact. The obligation is then divided proportionally based on each parent's contribution to combined gross income.
Oregon has several distinctive features in its child support system. Oregon applies a parenting time credit starting at just 92 overnights (25%) — lower than most income-shares states. The state uses a unique "Social Security credit" — if either parent receives SSA benefits, it affects the calculation. Oregon has an official online calculator provided by the Department of Justice that is widely used by courts.
Oregon bases calculations on gross income — meaning income before taxes and deductions. This includes wages, salaries, commissions, bonuses, self-employment income, and other sources. The self-support reserve in Oregon is $1,350/month, ensuring the paying parent retains enough income to cover basic living expenses.
How Oregon Calculates Child Support
Oregon follows a 6-step process under the Oregon Child Support Guidelines (OAR 137-050-0700 to 0765):
- 1
Calculate each parent's gross monthly income
- 2
Apply the Oregon income conversion (gross to "adjusted" income)
- 3
Combine adjusted incomes and find the basic obligation
- 4
Prorate based on income shares
- 5
Apply parenting time credit if 92+ overnights
- 6
Add shares of childcare and health insurance
Income Thresholds & Key Numbers in Oregon
Self-Support Reserve
$1,350/mo
Shared Custody Threshold
92 nights/yr
25% of overnights
Income Basis
gross
Sample Obligation Schedule
| Combined Monthly Income | 1 Child | 2 Children | 3 Children |
|---|---|---|---|
| $1,500 | $252 | $365 | $435 |
| $3,000 | $455 | $663 | $804 |
| $5,000 | $665 | $975 | $1,185 |
| $8,000 | $920 | $1,355 | $1,648 |
| $12,000 | $1,195 | $1,762 | $2,145 |
* Simplified schedule. Actual amounts may vary based on additional factors.
Custody Time Adjustments in Oregon
Oregon recognizes "Parenting Time Credit" when the non-custodial parent has the children for at least 92 overnights per year (approximately 25% of the time). When this threshold is met, the standard child support formula is adjusted to reflect the increased direct expenses borne by both parents.
Under Oregon's Income Shares approach, the shared parenting adjustment typically calculates each parent's obligation based on their income share, then applies a credit or cross-calculation that accounts for the time each parent directly supports the child. The more overnights the non-custodial parent has, the greater the reduction in their payment — but the adjustment is not dollar-for-dollar because fixed costs like housing don't decrease when the child is away.
Below 92 overnights, Oregon generally treats the arrangement as a sole custody situation with standard visitation, and no custody time adjustment is applied to the child support calculation.
Frequently Asked Questions About Oregon Child Support
What is Oregon's parenting time threshold?
Does Oregon have an official calculator?
How to Reduce Child Support Costs in Oregon
While child support is determined by Oregon's guidelines, there are legitimate ways to ensure your obligation is calculated fairly.
Increase Parenting Time
In Oregon, more overnights with your children can reduce your support obligation. Document actual time spent and request a formal custody modification if needed.
Ensure Accurate Income Reporting
Both parents' incomes must be reported accurately. Verify that bonuses, overtime, and variable income are averaged correctly over the appropriate period.
Claim All Allowable Deductions
Oregon allows deductions for items like mandatory retirement contributions, union dues, and health insurance premiums. Make sure all qualifying deductions are included.
Request a Modification When Eligible
If your income has decreased by 15-25% or more, you may qualify for a modification. File promptly — changes are typically not retroactive before the filing date.
Account for Other Children
If you have other children you're legally obligated to support, this can be factored into the calculation as a deduction in most states.
Review Healthcare & Childcare Costs
Ensure shared expenses like health insurance and childcare are divided proportionally. If costs have changed, update the court.
Key Facts About Child Support in Oregon
Calculation Model
Income Shares
Guidelines Source
State Statute
Review Frequency
Every 4 Years
Last Updated
January 15, 2024
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