Reviewed for current 2026 law
Oregon Child Support Arrears Calculator
Project the general Oregon judgment-interest rate without replacing a ledger.
Reviewed by SupportDecode Editorial Team Page content reviewed Sources Methodology Update log
arrears calculator
Estimated arrears with interest: $5,004.50
Interest of $4.50 at 0.09% simple per year (ORS 82.010).
| Line item | Amount |
|---|---|
| Arrears principalORS 82.010 — legal rate of interest (Oregon Legislature) | $5,000.00 |
| Simple interest at 0.09% per year for 12 month(s) (ORS 82.010)Oregon money judgments generally accrue 9% annual simple interest. Support-ledger timing and prior judgments should be verified before relying on a projection.ORS 82.010 — legal rate of interest (Oregon Legislature) | $4.50 |
| Arrears principal plus interestORS 82.010 — legal rate of interest (Oregon Legislature) | $5,004.50 |
Assumptions
- Accrual period expressed as 12 month(s); partial months prorate.
Estimate only. The court or state agency calculation controls.
Oregon arrears interest under ORS 82.010; rules last reviewed 2026-08-10.
Oregon money judgments generally earn 9%
ORS 82.010 sets the general rate and specifies simple interest unless a contract provides otherwise.
Support installment dates and any separately entered arrears judgment still control the actual ledger.
Use a dated ledger for legal totals
A single principal-and-time projection cannot reproduce installment-by-installment accrual and payments.
What this estimate includes
- 9% simple projection
What it leaves out
- Installment dates
- Payment allocation
- Fees and credits
Oregon arrears calculator FAQs
What rate does this use?
The general 9% Oregon judgment rate.
Is it compounded?
The statute generally specifies simple interest.
Does every balance share one start date?
No.
Can payments change interest?
Yes.
Does this certify arrears?
No.
Should an older judgment be checked?
Yes.
Official sources
Official sources last verified: .
- ORS 82.010 — legal rate of interest
Oregon Legislature Last checked
Changelog: page reviewed . Material changes appear in the update log.