Missouri judgment & prejudgment interest rates
Everything Missouri charges in interest on a money judgment or an overdue debt, in one place — the rate after judgment and the rate before it, each verified against the statute and linked to its full page with sources, history, and carve-outs.
| Metric | Rate | Basis |
|---|---|---|
| Post-judgment interest | 9% | Set by statute |
| Prejudgment interest | 8.75% | Formula rate |
Post-judgment interest
Missouri's post-judgment interest rate is 9% per year. Missouri post-judgment interest is currently 9% — a statutory formula rate under Mo. Rev. Stat. §408.040 that resets periodically. NON-TORT (contract and all other non-tort money judgments) = 9% flat, or the contract rate if the contract bears more than 9%. TORT = Fed Funds…
→ Full Missouri post-judgment page — statute, effective-date history, and source.
Prejudgment interest
Missouri's prejudgment interest rate is 8.75% per year (formula rate). Missouri prejudgment interest is currently 8.75% per year — a statutory formula rate under Mo. Rev. Stat. § 408.040 that resets periodically. Prejudgment interest is NOT freely available; it is claim-type restricted.
→ Full Missouri prejudgment page — when it applies, accrual, compounding, and carve-outs.
Frequently asked
What is the post-judgment interest rate in Missouri?
As of July 9, 2026, the Missouri post-judgment interest rate is 9% per year. Missouri judgment interest — a formula rate, reset periodically.
What is the prejudgment interest rate in Missouri?
Missouri's prejudgment interest rate is 8.75% per year (formula rate). Prejudgment interest is NOT freely available; it is claim-type restricted.
Is Missouri judgment interest simple or compound, and when does it start?
See each rate's page for the exact compounding rule, accrual date, and statutory carve-outs — Missouri prejudgment interest in particular turns on the type of claim.
Compare every state on the state interest-rate index and the prejudgment interest index, or run the numbers with our interest calculators. Reference data only — not legal advice.