Montana prompt payment

Who and what this applies to

Final acceptance and final payment on government-entity building-construction contracts under section 18-2-306.

Thresholds and scope

The statute expressly allows different provisions of law or contract.

The rules

• Unless law or contract provides otherwise, the government entity decides final acceptance within ten days after the contractor’s request and makes final payment within 30 days after final acceptance. Source
• Except as law or contract provides, late payment carries the interest rate in section 17-8-242 or 18-1-404 as applicable. Final acceptance follows the designated representative’s certification of completion under the contract. Source

Primary sources

• MCA §18-2-306(1)
• MCA §18-2-306(2)-(3)

Sources reviewed 2026-09-30. This guide covers the projects and rules stated above.

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