Cost Plus Contractor Agreement Template for the United States

A Cost Plus Contractor Agreement allows you to engage contractors on projects where actual costs are reimbursed along with a predetermined fee. This contract structure provides transparency in project expenses while ensuring contractors receive fair compensation for their work and expertise.

When do you need this document?

You need a Cost Plus Contractor Agreement when project costs are difficult to estimate upfront, such as research and development projects, complex construction with unknown site conditions, or emergency repair work. This contract type is particularly valuable for government contracts that must comply with Federal Acquisition Regulation (FAR) requirements. The agreement works well when you need flexibility to modify project scope during execution or when dealing with specialized work where material and labor costs fluctuate significantly. Federal agencies often use cost-plus contracts for defense projects, scientific research, and infrastructure development where innovation and adaptability are essential.

Key legal considerations

Your agreement must clearly define allowable costs versus non-allowable expenses to prevent disputes and ensure compliance with federal regulations. The contract should establish robust cost documentation requirements, including detailed record-keeping procedures and regular reporting schedules. You need to specify the contractor's fee structure, whether it's a fixed fee, percentage of costs, or incentive-based arrangement. The agreement must include provisions for cost auditing and approval processes, particularly important for government contracts subject to Truth in Negotiations Act (TINA) requirements. Consider including liability limitations, dispute resolution procedures, and termination clauses that protect both parties while maintaining project continuity.

Legal requirements in United States

Federal cost-plus contracts must comply with the Federal Acquisition Regulation (FAR), which governs allowable costs, contractor certification requirements, and audit procedures. If your project involves federal funding, you must ensure compliance with the Davis-Bacon Act for prevailing wage requirements on public works projects. State contractor licensing laws vary by jurisdiction but typically require proper licensing and bonding before contract execution. The Miller Act mandates payment bonds for federal construction projects exceeding $100,000 to protect subcontractors and suppliers. Your agreement must also address state-specific mechanics lien laws and payment security requirements. For government contracts, the Contract Disputes Act provides the framework for resolving disputes through administrative procedures before litigation.