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time and material vs fixed price contract
Time and Material vs Fixed Price Contracts: Making the Right Choice for Your Project
5 minute read
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Tim Forestell
October 12, 2023

Time and Material vs Fixed Price Contracts: Making the Right Choice for Your Project

For construction company owners, choosing between fixed-price contracts and time and materials (T&M) contracts is pivotal. The contract choice you make is important because both contract types come with their own set of advantages and drawbacks. Making the right decision can significantly impact the success of a construction project.

In this blog, we will discuss fixed-price and time and materials contracts for construction managers, owners, and small general contractors. Other topics include the advantages and disadvantages of both contracts and how to manage these contracts.

What Are Fixed Price Contracts?

A popular contract type, fixed-price contracts involve a predetermined total cost agreed upon before the project commences. This encompasses all expenses, from labor to material costs, and any unforeseen overruns are the responsibility of the contractor.

When to Use Fixed Price Contracts?

Fixed-price contracts are most suitable for projects with well-defined scopes of work and minimal uncertainties. This makes them ideal for construction projects where the variables are well understood, allowing for precise cost estimations. Fixed-price contracts are easier to manage when you're an experienced contractor and can account for work that may arise outside of the original scope.

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Advantages of Opting for Fixed Price Contracts

One of the key advantages of fixed-price contracts is predictability. Clients have a clear understanding of the project cost from the outset, providing financial security. Additionally, contractors operating under fixed-price contracts often exhibit heightened efficiency as they are incentivized to complete the project within budget and on time.

Disadvantages of Fixed Price Contracts

While the predictability of costs is a strength, it can also be a limitation. If unforeseen issues arise during the project, absorbing additional costs becomes the burden of the contractor. This can lead to disputes and potential delays in project completion.

What is the Time and Material Model?

The other popular contract type is time and materials (T&M) contracts. These contracts involve billing clients based on the actual hours worked and the materials used during the construction process.

This model offers flexibility for the contractor as labor rates are fixed while the labor hours are not. This allows flexibility in terms of the time needed to complete the job. In addition, costs for materials are not fixed, making them suitable for projects with evolving scopes, material changes due to availability and supply, and other uncertain timelines.

When to Use Time and Material Contracts?

Time and material contracts shine in projects where the scope is subject to change. Or where there is uncertainty in the duration of the construction process. They provide the agility needed to adapt to evolving circumstances without requiring a complete contract change.

An easy way to avoid uncertainty in the scope of a project is to do a site visit before accepting the job. This will give you a good indication of the type of client you have and what will be required to get the job done efficiently.

Advantages of Time and Material Contracts

Flexibility is the hallmark of time and material contracts. They allow for adjustments to the project scope as needed, offering a degree of adaptability that can be invaluable. Additionally, clients only pay for the actual work performed and materials used. This can be advantageous in scenarios where project requirements evolve.

Disadvantages of the Time and Material Model

While flexibility is an asset, it can also be a liability. The open-ended nature of time and material contracts can lead to uncertainties in project costs, potentially causing concerns for clients who prefer fixed budgets. Additionally, without careful management, costs can escalate beyond initial expectations.

Time and Material vs Fixed Price Contracts: What's the Difference?

Understanding the fundamental differences between time and material and fixed-price contracts is crucial for making informed decisions.

Time and Material vs Fixed Price Estimations

Effective estimation techniques vary for each contract type. Fixed-price contracts demand meticulous planning and detailed scope definition upfront. This is because any costs that are excluded or left out of the initial agreement on a fixed-price contract will be absorbed by the contractor. However, this creates the most clarity for the customer and builds a lot of trust.

In contrast, time and material contracts require ongoing monitoring and adjustment as the project progresses. While the customer absorbs the cost, a lack of transparency on the cost changes can create worse business relationships and decrease trust. If you choose to go the time and material route, you need to keep an open line of communication with the customer, keep costs as low as possible, and track all of your expenses thoroughly.

How to Choose Between Time and Material or Fixed Price?

Choosing between time and material and fixed-price contracts requires a comprehensive evaluation of project-specific factors. Project scope, budget constraints, and the level of certainty regarding the scope are key considerations.

Factors to Consider:

  1. Project Complexity: For projects with well-defined scopes, fixed-price contracts are often more suitable. Time and material contracts are better suited for projects with evolving or uncertain scopes.

  2. Budgetary Constraints: If clients require strict budget adherence, fixed-price contracts offer the certainty of a predetermined cost. Time and material contracts, while offering flexibility, can introduce uncertainties in costs for both the contractor and the customer.

  3. Timeline Sensitivity: Fixed-price contracts incentivize contractors to meet deadlines. If timely completion is critical, a fixed-price model might be preferable. However, if adaptability is prioritized over a rigid timeline, time and material contracts can offer the needed flexibility.

  4. Scope Evolution: Projects with potential scope changes benefit from the flexibility of time and material contracts. In contrast, fixed-price contracts might lead to disputes and delays if significant scope changes occur.

Conclusion

In construction management, choosing the right contract type is important for both the customer and the client. While fixed-price contracts provide a well-defined idea of the costs for a project, time and material contracts offer the flexibility to change things on the fly, which some customers may prefer. The decision ultimately hinges on the nature of the project, the level of certainty in its scope, and the relationship between the customer and contractor.

Unfortunately, there is no one-size-fits-all solution. Each contract type has its advantages and disadvantages, and the type you choose lies in understanding the unique characteristics of the project at hand. By understanding the nuances of fixed-price and time and material contracts, construction managers, owners, and small-enterprise general contractors can pave the way for successful and harmonious project outcomes.

Included in both types of contracts should be projected equipment costs whether you own or rent equipment. For equipment rentals, you can use the DOZR Marketplace. Our extensive range of equipment ensures that you have the right heavy equipment for your project. And, with transparent pricing and the ability to search by location, you can incorporate accurate price forecasting in both your fixed-price and time and material contracts. Search DOZR for all of your heavy equipment rental needs.

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Mini Excavator image
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1,300 lbs - 3,400 lbs
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Tim Forestell
Tim Forestell is one of DOZR’s co-founders and CCO. Tim got started in the industry as VP Operations for Forestell Landscaping before founding DOZR with Kevin and Erin. Aside from the amazing team at DOZR, his favourite thing about DOZR are the customers. Working with DOZR renters every day gives him a peek at the evolution of different projects and hearing stories about projects being developed from start to finish.
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