Quick answer: In Oklahoma, each past-due child support payment is a judgment by operation of law. Past-due support draws simple interest at 2% a year under 43 O.S. 114 as last amended, from the date it becomes delinquent. A court can revoke licenses when current support and arrears went unpaid for the current month and the two before it.
This Oklahoma child support arrears calculator adds up the unpaid installments and simple interest at the rate you enter under 43 O.S. 114, and flags the license and passport thresholds. Older rules and some sources describe a 10% rate, so confirm which applies to your judgment.
Oklahoma child support arrears and interest at a glance
| Rule | What Oklahoma says |
|---|---|
| Judgment | A court-ordered child support payment becomes a judgment by operation of law on the date it becomes past due (43 O.S. 137(A), described in an Oklahoma Supreme Court opinion) |
| Interest | Court-ordered past-due support draws interest at 2% per year from the date it becomes delinquent (43 O.S. 114) |
| Lump sums | A lump-sum judgment for earlier support draws interest from the first day of the month after it is entered (43 O.S. 114) |
| Agency method | Simple interest; interest begins the first day of the month after arrears exceed one month of current support (OAC 340:25-5-140.1) |
| Servicemembers | A written request caps interest at 6% on arrears incurred before military service (OAC 340:25-5-140.1; 50 U.S.C. 3937) |
| Licenses | Noncompliance unless current support and arrears payments were paid for the current month and the two preceding months (43 O.S. 139.1) |
How do child support arrears work in Oklahoma?
- Interest and method. See the Oklahoma child support interest rate.
- Collection. See what happens if you do not pay child support in Oklahoma.
- Whether arrears can be changed. See whether Oklahoma child support arrears expire or can be forgiven.
What does this arrears calculator check?
You enter the monthly support, the number of installments unpaid and the annual rate (2% by default). The calculator adds simple interest from each delinquency date and flags the judgment, the three-month license trigger and the $2,500 passport line. It does not model partial payments. To change the amount going forward, see the Oklahoma child support modification calculator, and for when the obligation stops, the Oklahoma child support end date calculator.
Frequently asked questions
Does Oklahoma charge interest on child support arrears?
Yes. Court-ordered past-due child support draws simple interest from the date each payment becomes delinquent.
What is the Oklahoma interest rate on child support arrears?
Two percent a year in the current text of 43 O.S. 114 (amended in 2016); earlier versions used 10%.
Is Oklahoma child support interest simple or compound?
Simple. Child Support Services calculates simple interest.
When can an Oklahoma court revoke a license for unpaid child support?
When the obligor is out of compliance, meaning current support and arrears payments were not paid for the current month and the two months before it.
Can Oklahoma waive child support interest?
The parents can mutually waive interest owed to the custodial person with court approval, and the agency can negotiate interest owed to the state.
Official sources
- 43 O.S. 114: interest on past-due child support
- OAC 340:25-5-140.1: interest
- Oklahoma Supreme Court: delinquent support is a judgment; simple interest
- 43 O.S. 139.1: license revocation or suspension
- 43 O.S. 112: arrearage determination
- 15 U.S.C. 1673: restriction on garnishment
- 42 U.S.C. 652(k): denial of passports