Benton County, Oregon Child
Support Estimator

Oregon child support is calculated under statewide Income Shares guidelines, but the filing, review, and enforcement process is local. Parents in Benton County use the same statewide formula as the rest of Oregon, then work through the county family court or child support agency process for orders, modifications, and enforcement.

Benton County ranks 11th by population among 36 Oregon counties. That matters for scheduling, clerk procedures, local forms, and how quickly a support order or modification moves through the court calendar.

Use this page to estimate the guideline amount first, then verify filing steps with the local court before submitting paperwork.

Benton County's smaller local court system may have fewer family-law hearing days, so parents should confirm filing windows, remote appearance rules, and document requirements before relying on an estimate.

Benton County Circuit Court is located at 120 NW 4th St, Corvallis, OR 97330. The clerk can be reached at (541) 766-6825.

Check the court website for current child support forms, hearing procedures, and filing instructions.

The core inputs are each parent's income, the number of children, health insurance premiums, work-related child care, existing support obligations, and parenting time. Oregon's calculator model is Income Shares.

Governing authority: Or. Rev.

Stat. § 25.275; OAR 137-050-0700.

County location does not usually change the statewide formula, but it does determine where parents file, which clerk reviews paperwork, and which local judge or hearing officer applies the guidelines. Income Shares model under ORS § 25.275 and the Oregon Child Support Guidelines (updated 2021) using both parents' combined monthly gross income and the Oregon Child Support Schedule.

Combined monthly gross income up to $28,000 is scheduled; above that, the court may deviate using guidelines factors. Gross income deductions: pre-existing child support orders, spousal support paid under a court order, and self-employment taxes.

Parenting time credit: obligors with 25%+ of overnights (91+ nights/year) receive a percentage reduction using the Oregon overnight formula; the reduction increases incrementally up to 50%+ parenting time. Child care and extraordinary medical costs allocated proportionally.

Minimum monthly support: $25. Administered by the Oregon Child Support Program (CSP) within the Department of Justice at oregonchildsupport.gov.

Statute: ORS §§ 25.275–25.400; Ore. Admin.

R. 137-050-0750.

Run the calculator with monthly or weekly income figures that match the official Oregon worksheet. If a parent is self-employed, unemployed, or paid irregularly, gather tax returns, pay stubs, and proof of benefits before relying on the estimate.

Parenting time can affect child support because many states adjust the payment when the paying parent has substantial overnights. Enter the actual schedule, not the schedule you expect to negotiate later.

Parents in Benton County should keep a written parenting-time calendar, school schedule, holiday rotation, and transportation plan. Those documents help the court compare the calculator estimate with the real custody arrangement.

If custody is still disputed, treat the estimate as a planning number. A final Oregon child support order can change once the court sets income findings, parenting time, insurance credits, and child care allocations.

A child support estimate is not a court order. To change an existing order, a parent usually must file a modification request and show a qualifying change in income, custody, health insurance, child care costs, or another guideline factor.

For enforcement, Oregon may use income withholding, payment records, tax refund interception, license actions, or contempt proceedings depending on the facts and the agency or court handling the case.

Before filing in Benton County, compare your calculator result with the current order and collect proof for each input. Courts generally need documents, not estimates alone, before changing a support obligation.

Child support often intersects with custody, alimony, property division, and divorce costs. Use the Oregon Custody Time Calculator to model overnights, then compare support with the Oregon Alimony Calculator and Oregon Divorce Cost Estimator.

For statewide guidance, start with the Oregon Child Support Calculator. For local comparison, review nearby county pages so you understand how court process and filing logistics vary across Oregon.

Compare Benton County with other high-volume Oregon jurisdictions: Multnomah County, Washington County, Clackamas County, Lane County.

Each county page uses the same statewide guideline framework and adds local context for filing, court process, and related family-law planning.