Key Takeaways
- Interest is added to a personal injury verdict by statute: When a jury returns a verdict for personal injuries, Oklahoma law directs the court to add prejudgment interest to the verdict under the judgment-interest statute, 12 O.S. § 727.1.
- The clock does not start when you file: Prejudgment interest does not begin to accrue until twenty-four months after the lawsuit was commenced, so the first two years of a case generally earn no statutory interest.
- The rate is set by formula, not by the court: The prejudgment rate is tied to a U.S. Treasury Bill rate certified each year, and it is separate from the higher postjudgment rate that runs after judgment is entered.
A common question after a serious injury is whether the long wait for a trial is "free" for the defense. If a case takes years to reach a verdict, does the at-fault side simply get to hold the money that whole time? Oklahoma answers part of that question with prejudgment interest — interest a court adds to a personal injury verdict to account for some of the delay between the lawsuit and the judgment.
This article explains how that interest works under Oklahoma's judgment-interest statute. It is general information, not legal advice, and the numbers in any individual case depend on the verdict, the filing date, and the rates in effect. If you are weighing whether to settle or take a case to trial, the personal injury team can walk through how interest fits the specific facts.
The Statute That Applies
Interest on Oklahoma civil judgments rendered on or after January 1, 2005 is governed by 12 O.S. § 727.1 in Oklahoma's Title 12 statutes, also available through this section page. That one statute does two different jobs. It sets postjudgment interest, which runs on a judgment after it is entered until it is paid, and it sets prejudgment interest, which can be added to certain verdicts to cover part of the period before judgment.
For personal injury cases, the prejudgment piece is the one that usually matters, and it is narrower than people expect. It does not turn every day of a lawsuit into interest, and it does not apply to a case that resolves by settlement before a verdict. It is a specific statutory add-on to a verdict, calculated by a fixed formula.
Prejudgment Interest on a Personal Injury Verdict
The personal injury provision lives in subsection E of the statute. Under 12 O.S. § 727.1(E), when a verdict for damages "by reason of personal injuries" — or injury to personal rights such as bodily restraint, personal insult, defamation, invasion of privacy, or injury to personal relations — is accepted by the trial court, the court in rendering judgment adds interest on the verdict at the rate set elsewhere in the statute.
Two features of that provision drive the math.
First, the interest attaches to a verdict. The statute operates when a court renders judgment on a verdict, so it is built around cases that actually reach a judgment. A case that settles before a verdict does not generate statutory prejudgment interest under this section; what a settlement is "worth" is a negotiation, and any interest-like component is part of that negotiation rather than an automatic statutory award.
Second, the interest is computed by formula on the verdict the court accepts, not on a number the court picks for fairness. That makes prejudgment interest predictable once the verdict and the dates are known, but it also means it is only as large as the statute's formula and timeline produce.
The Twenty-Four-Month Delay Most People Miss
The most important — and most counterintuitive — feature is when the interest starts. Under 12 O.S. § 727.1(E), prejudgment interest does not begin to accrue until twenty-four months after the suit that resulted in the judgment was commenced.
In plain terms, filing the lawsuit does not start the interest clock. The first two years of a case generally earn no statutory prejudgment interest at all. Only after that two-year mark does interest begin to build on the verdict, running forward until the earlier of the date the trial court accepts the verdict or the date the judgment is filed.
That single rule changes the practical value of prejudgment interest. A case that reaches a verdict relatively quickly may carry little or no prejudgment interest, because much of its life fell inside the first twenty-four months. A case that grinds on well past the two-year mark accrues more, because interest is running for a longer stretch after the delay period ends.
How the Rate Is Set
Oklahoma does not let a judge choose the prejudgment rate. The statute sets it by formula. Under 12 O.S. § 727.1, prejudgment interest is computed using a rate tied to the average United States Treasury Bill rate of the preceding calendar year, certified each year by the State Treasurer to the Administrative Director of the Courts.
Because the rate is recertified annually, a case that accrues interest across more than one calendar year can move through more than one rate. The statute walks through which year's rate applies as time passes, starting with the rate in effect for the year that is twenty-four months after the suit was filed and stepping forward year by year until the earlier of verdict acceptance or judgment filing.
This article does not state a current numeric rate, because the certified figure changes from year to year and should be confirmed for the specific years a case spans. The point to take away is structural: the rate is a published, formula-driven number, not a discretionary one.
Prejudgment Interest Is Not the Same as Postjudgment Interest
It is easy to blur the two kinds of interest in the same statute, but they are different and they use different rates.
Postjudgment interest, in subsection A of 12 O.S. § 727.1, runs after a judgment is entered, until the judgment is paid. Its rate is the prime rate published in the first edition of the Wall Street Journal for the year, plus two percent, certified annually. That is a meaningfully different — and generally higher — formula than the Treasury Bill rate used for prejudgment interest.
The practical sequence in a tried case is: little or no interest for the first twenty-four months, prejudgment interest on the verdict from the twenty-four-month mark until the earlier of verdict acceptance or judgment filing, then postjudgment interest on the judgment at the prime-plus-two rate until the defendant pays.
Punitive Damages Follow a Different Timing Rule
If a personal injury verdict includes exemplary or punitive damages, the statute treats interest on that portion differently. Under 12 O.S. § 727.1(E), interest on an exemplary or punitive award begins to accrue from the earlier of the date the judgment is rendered, as stated in the judgment, or the date the judgment is filed with the court clerk — not from the twenty-four-month point that applies to compensatory personal injury damages. That distinction can matter in cases where punitive damages are a significant part of the award.
Why This Matters When You Weigh Settlement Against Trial
Prejudgment interest is one of several factors in the larger question of whether to accept a settlement or proceed to a verdict. It can add to the value of a verdict in a case that has been pending for years, but the twenty-four-month delay and the Treasury Bill rate keep it modest in many cases, and it does not apply at all to a pre-verdict settlement.
It is best understood alongside the other moving parts of an injury case — the strength of liability, the size and certainty of damages, the cost and risk of trial, and Oklahoma's damages rules. Our discussions of settling versus going to trial in Oklahoma, the realistic timeline of an injury case, and the 2025 changes to Oklahoma's damage caps each address a different piece of that calculus.
Frequently Asked Questions
Does Oklahoma add interest to a personal injury verdict?
Yes. When a jury returns a verdict for personal injuries and the court accepts it, the court adds prejudgment interest to the verdict under 12 O.S. § 727.1(E), at a rate set by the statute. Separate postjudgment interest then runs on the judgment until it is paid.
When does prejudgment interest start in Oklahoma?
It does not start when you file. Under 12 O.S. § 727.1(E), prejudgment interest does not begin to accrue until twenty-four months after the lawsuit was commenced, and then runs until the earlier of verdict acceptance or judgment filing.
Do I get prejudgment interest if my case settles?
The statute attaches prejudgment interest to a verdict that a court reduces to judgment, so a case that settles before a verdict does not produce statutory prejudgment interest under 12 O.S. § 727.1. In a settlement, any value attributed to delay is part of the negotiated number.
What is the prejudgment interest rate?
The prejudgment rate is tied to the average U.S. Treasury Bill rate of the preceding calendar year, certified annually by the State Treasurer to the Administrative Director of the Courts (12 O.S. § 727.1). Because it is recertified each year, the exact figure for any case should be confirmed for the specific years involved.
Is prejudgment interest the same as postjudgment interest?
No. Postjudgment interest under 12 O.S. § 727.1(A) runs after judgment at the prime rate plus two percent, while prejudgment interest uses the lower Treasury Bill formula. They cover different periods and use different rates.
Deciding Whether to Settle or Try Your Injury Case?
Prejudgment interest is one piece of a much larger calculation. We can walk through how it — and the rest of your case — actually adds up.
Talk to a Personal Injury LawyerLearn more about how Oklahoma personal injury cases are valued and what to expect from the personal injury lawsuit timeline.
This article is for general information only and is not legal advice.
