Oklahoma Prejudgment Interest Rate
United States Oklahoma prejudgment interest — a formula rate, reset each year.
Set by statute Formula rate
Oklahoma prejudgment interest is currently 4.13% per year — a statutory formula rate under 12 O.S. Sec. 727.1 that resets each year. Sharply restricted and split across two statutes.
When Oklahoma prejudgment interest applies
Sharply restricted and split across two statutes. (1) 12 O.S. 727.1(E) authorizes prejudgment interest ONLY on a "verdict for damages by reason of personal injuries or injury to personal rights" (e.g., bodily restraint, personal insult, defamation, invasion of privacy, injury to personal relations) — accepted on/after Nov 1, 2009. It does NOT cover contract, property, or general commercial claims.
When it starts accruing
Depends on claim type. For personal-injury/personal-rights verdicts (12 O.S. 727.1(E)): accrual begins the date 24 MONTHS AFTER the suit resulting in the judgment was commenced (not the date of injury), running until verdict acceptance/judgment.
Simple or compound
Simple. Oklahoma prejudgment interest is computed as simple interest on the principal/verdict amount; the statute prescribes annual re-setting of the rate but does not compound accrued interest.
How the rate is set
Variable, reset annually. Prejudgment rate = average U.S. Treasury Bill rate of the preceding calendar year, certified by the State Treasurer per 12 O.S. 727.1(I) and published by the Administrative Director of the Courts. 2026 published prejudgment rate = 4.13%.
→ Compare with the Oklahoma post-judgment interest rate (interest after judgment)
Prejudgment interest under 12 O.S. Sec. 727.1 — 4.13% (simple interest). This is PREjudgment interest (accruing before entry of judgment) and is separate from Oklahoma’s post-judgment rate; availability is limited by claim type (see the page). Current formula value as of 2026-01-02; verify at oscn.net. Not legal advice.
Effective-date history
| Effective date | Rate | Basis |
|---|---|---|
| January 2, 2026 | 4.13% | Statute |
Source & provenance
Latest value retrieved July 10, 2026 (02:55 UTC) from the official source:
https://www.oscn.net/applications/oscn/DeliverDocument.asp?CiteID=551111