Calculating Project Based Consulting Fees

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Calculating Project-Based Consulting Fees

Most new consultants start their practice charging hourly or daily fees, but it is a good practice to move  as soon as possible to project based consulting fees.

Once you have some experience in your work, project based fees are more profitable for you and more well-defined for the client.

Project based fees also are a perfect platform for delivering tiers of work and adding a monthly retainer.

Project based fees are important for you as a consultant because you can,

  • Avoid competition with hourly/daily fee-based freelancers
  • Benefit by improving your productivity
  • Create larger fees with longer client relationships
  • Present project proposals that offer low, medium, and high tiers of solutions
  • Include subcontractors who work at rates lower than yours
  • Include business overhead and profit margin
  • Prove to tax authorities that you are an independent business and not an employee

Project based fees do have the disadvantage that if you do not correctly estimate a project or if you allow scope creep, you lose not only your profit margin, but you can lose potential income and tarnish your brand.

Create a Detailed Statement of Work 

For new consultants, or consultants facing a project they have never done before, calculating a project based fee can be difficult.

Before you can calculate your consulting fee you need a well-defined, detailed Statement of Work (SOW) – you and the client need to agree on the times, deliverables, and responsibilities. If your SOW is not accurate the client will be unhappy, and you will probably lose money. A good SOW also helps you manage scope creep.

If you have consulted on many similar projects, you can refer to your past data to help develop the new SOW and pricing.

If you have not done similar projects, you need to create a list of deliverables, times, tasks, and responsibilities. The best way I have found to do this is to involve the client, the managers, and employees in building the SOW.

If the project is short or you are unable to get a client-side team to help develop the SOW, then follow this same process by yourself or with a consulting partner. With fewer eyes on the wall I have found it's always a good idea to leave the sticky-note "map" on the wall until the next day when I review it again. (It's amazing how you can see problems from a different point-of-view after a day away.)

One way to do this is using 3M Sticky Notes (r) and walk everyone through the list of deliverables, time frames, and tasks to complete them. This picture is from a walk through with a major medical device manufacturer. Developing the project roadmap is similar to the brainstorming method described in the brainstorming with Post-Its blog but the layout starts freeform and progresses to a timeline.

Use Post-It ® or sticky-note brainstorming to identify all deliverables and tasks for the project. Then estimate the time for each task and assign responsibilities.

When brainstorming a project, I first have everyone brainstorm deliverables needed, then the tasks to complete the deliverables. Then we create a timeline on the whiteboard and work from left to right assigning tasks, times, and due dates.

Working with the client to develop a well-defined Statement of Work ensures both you and the client have discussed expectations and deliverables. For you, a well-defined Statement of Work is essential to preventing scope creep.

Identify Risks and Unknowns

When you have all the deliverables and time frames up on a white board, have everyone sit back and look for risks and unknowns. Give everyone five minutes of quiet so they can discover on their own and write notes.

Then, ask for corrections or risks people see.

EVERY TIME I have done this exercise with groups someone catches something missed in the first round. It might be a government body that needs to be informed before starting work, a missing team that should be brought in, a timing conflict that causes a deliverable delay,…

As an independent consultant who is not an omniscient Oden you can’t see everything that is missing. The more eyes you get on the whiteboard the better the project plan and Statement of Work will be.

Do online brainstorming with or

Assign Times and Costs

Now that you have all the deliverables, tasks, times, and responsibilities you can begin defining development time and resource costs.

Track all times, costs, and resources used. As the ex-Mr. Excel for Microsoft’s west coast clients, I’ve built my own tracking sheets in Excel. Many of these project management tasks can be done online using the SaaS tools of your clients.

More Advanced Excel Gantt Chart

You can download the Advanced or More Advanced Excel-based Gantt charts I created for you here.

Download the Advanced Excel-based Gantt chart to help calculate costs


Download More Advanced Excel-based Gantt chart to help calculate costs


As an aid to calculating costs, modify the Gantt chart by inserting three columns at column F in the More Advanced Gantt Chart. In these three columns enter,
G      Estimated hours for that task
H      Price per hour
I        Cost = Hours * Price/Hr

Because the Gantt chart has a separate row for each task you can zero (0) costs for tasks done by the client and enter separate hours and costs for tasks done by yourself or your subcontractors.

At the bottom of the Gantt chart, put in a total for your Cost column.

Adjust for Subcontractors

On large projects you should not do all the work yourself. You should assign high-experience, critical tasks to someone with that specialized expertise. You also need to identify low-skill tasks you can hire out to someone earning much less than your billing rate.

Adjusting for the Unforeseen

When I was an Air Force pilot, I used my crew-rest time and ground time to refurbish houses and rent them out. What does that have to do with consulting projects?

I learned the hard way that best estimates, even for projects you are experienced with, are rarely accurate. You need to include a fudge factor.

If it is a large multi-participant project add at least 50% if you are familiar with the project. If this is your first time with this type of project and you did the task/times yourself, you might even double (2X) your estimate.

Create a Tiered Project Proposal

One of the many advantages of using project based fees is that you can add tiers of deliverables. If you are working at an hourly or daily rate and you talk about adding a lot of additional work you will look like you are trying to expand the scope to fill your wallet.

When presenting these additional tiers, you might use wording like,

“I’ve found that in addition to what we've talked about I have seen clients with these needs later have to include …”

Some of the additional tiers I have seen and have included myself are,
• Training
• Process and workflow documentation
• Project management
• Quarterly reviews
• Facilitating management reviews
• Retainers for questions and advice

Adding two or three tiers of additional or alternate work to a proposal's addendum, not the main body, allows the client to see tasks or objectives they might have missed. It also shows that you have thought through the full project.

Learn More in the eBook on this Topic:

Calculating and Setting Consulting Fees

Learn More in Blogs on this Topic:


Calculating and Setting Consulting Fees

9 Consulting Fee Structures to Boost Your Income

21 Types of Consultants and What they Earn



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