Key Takeaways
- Client reimburses all costs plus contractor fee.
- Shifts financial risk from contractor to client.
- Ideal for projects with uncertain scope.
- Multiple fee structures incentivize performance differently.
What is Cost-Plus Contract?
A cost-plus contract is an agreement where you reimburse the contractor for all allowable project expenses plus an additional fee covering profit and overhead. This contrasts with fixed-price contracts by shifting financial risk and providing flexibility when project scope is uncertain.
This contract type is common in complex capital projects, where costs can be unpredictable and detailed tracking is essential to manage expenses effectively.
Key Characteristics
Cost-plus contracts have distinct features that affect risk and project management:
- Reimbursement Basis: Covers direct and indirect costs like labor and materials, often defined in a capital project scope.
- Additional Fee: Contractor receives a fixed fee or incentive-based payment beyond costs.
- Risk Allocation: Shifts financial risk from contractor to client, requiring close oversight.
- Flexibility: Allows adjustments in project scope without renegotiating total price.
- Documentation: Necessitates meticulous cost tracking and transparent reporting.
How It Works
Under a cost-plus contract, the contractor submits documented expenses for reimbursement, while the agreed-upon fee provides profit. You and the contractor must agree upfront on reimbursable costs and fee structure, which can be fixed, incentive-based, or a percentage of costs.
This model demands active project management and financial controls, including monitoring expenses and evaluating estimate at completion (EAC) to anticipate final costs. It is especially useful when technical requirements are evolving or unclear, requiring adaptability in budgeting and execution.
Examples and Use Cases
Cost-plus contracts are suited for projects where quality and flexibility outweigh cost certainty:
- Engineering and R&D: Complex research initiatives often use cost-plus agreements due to uncertain outcomes and shifting requirements.
- Emergency Services: Rapid response projects prioritize speed and quality over fixed pricing.
- Airlines: Companies like Delta often rely on cost-plus contracts for specialized maintenance and upgrades requiring detailed cost tracking.
- Professional Services: Firms employing certified public accountants, such as CPA firms, may use cost-plus contracts for consulting projects with variable scopes.
Important Considerations
While cost-plus contracts offer flexibility, they require you to maintain rigorous oversight to prevent budget overruns and ensure cost reasonableness. Detailed documentation and clear agreement on allowable costs are critical to avoid disputes.
Additionally, understanding finance principles helps you evaluate contractor fees and project expenses effectively, ensuring the contract aligns with your financial goals and risk tolerance.
Final Words
Cost-plus contracts provide transparency and flexibility by reimbursing actual costs plus a fee, but they require careful cost monitoring to prevent overruns. Review contract terms closely and consider consulting a financial expert before committing to ensure the fee structure aligns with your project goals.
Frequently Asked Questions
A cost-plus contract is an agreement where the client reimburses the contractor for all allowable project expenses plus an additional fee that covers the contractor's profit and overhead. This differs from fixed-price contracts, where the contractor receives a set amount regardless of actual costs.
In a cost-plus contract, the contractor tracks and documents all project-related costs, which the client then reimburses. The contractor also receives an agreed-upon fee on top of these costs, which can be fixed or vary depending on the contract type.
There are several types, including Cost-Plus Fixed Fee (CPFF), where the contractor gets a set fee; Cost-Plus Incentive Fee (CPIF), which rewards meeting performance goals; Cost-Plus Percentage-of-Cost, where fees rise with costs; and Cost-Plus Fixed Rate, which uses predetermined labor rates.
Allowable costs typically include direct expenses like labor, materials, and equipment, as well as indirect costs such as office supplies, administrative support, and utilities, all of which must be agreed upon by both contractor and client.
The client assumes most of the financial risk since they reimburse all project costs, which can lead to potential overruns. The contractor faces less financial risk as they are guaranteed to recover costs plus a fee.
Cost-plus contracts are ideal for projects with uncertain or evolving scopes, such as research and development, complex technical projects, emergency work requiring speed, or situations prioritizing quality over cost certainty.
These contracts provide high flexibility and allow clients more control over project quality. They reduce the contractor’s incentive to cut corners since profit is separate from costs, making them suitable for complex or uncertain projects.


