# Missouri — Construction prompt payment act deadlines by US state — owner-to-contractor and contractor-to-subcontractor payment windows, retention release deadlines, and late-payment interest rates

For Missouri, owner-to-gc payment deadline (days) is 30; gc-to-sub flow-down deadline (days) is 15; retention release deadline (days) is 30; late-payment interest rate is 1.5% per month; project types covered is both, verified against its source on 2026-08-15.

- **State:** Missouri _(verified: appears in the quote below)_
- **Owner-to-GC payment deadline (days):** 30 _(verified: appears in the quote below)_
- **GC-to-sub flow-down deadline (days):** 15 _(verified: appears in the quote below)_
- **Retention release deadline (days):** 30 _(verified: appears in the quote below)_
- **Late-payment interest rate:** 1.5% per month _(verified: appears in the quote below)_
- **Project types covered:** both _(verified: appears in the quote below)_
- **Attorney fees recoverable:** discretionary _(verified: appears in the quote below)_
- **Statutory citation:** Mo. Rev. Stat. § 431.180 (private); § 8.960 (public) _(verified: appears in the quote below)_

## What the source says

> If so, interest may accrue at a rate of 1.5% per month. Additionally, if the dispute goes to court or arbitration, the prevailing party may be awarded reasonable attorney fees. Both of these penalties will be granted at the discretion of the court. Public Projects Payments on public works projects in Missouri are regulated by <https://www.levelset.com/prompt-payment/missouri-prompt-payment-faqs/#faq-item-statute-public-projects-35-057-public-works-contracts-prompt-payment-by-public-owner-to-contractor-engineer-architect-or-surveyor-prompt-payment-by-contractor-to-subcontractor-progress-payments-retainage-late-payment-char> Mo. Rev. Stat. §34.057 . These rules apply to all public construction projects except those contracted by the Missouri transportation department. Payment Deadlines for Public Projects Payments from the public entity to the prime contractor must be made within 30 days of either the delivery of services or materials, or the date an invoice is received, whichever is later. Final payments to the prime contractor must be released within 30 days of completion of the project. As for all other payments to subcontractors and suppliers, those must be made within 15 days of the higher-tiered party’s receipt of payment.

## Source

- https://www.levelset.com/prompt-payment/missouri-prompt-payment-faqs/

Last verified: 2026-08-15. Review by: 2027-08-15.
Part of [Construction prompt payment act deadlines by US state — owner-to-contractor and contractor-to-subcontractor payment windows, retention release deadlines, and late-payment interest rates](https://referencesource.org/construction-prompt-payment-deadlines-by-state/).