What Utilisation Rate Reveals About Project Margins

What Utilisation Rate Reveals About Project Margins

Engineering and consultancy firms often keep a close eye on utilisation rates.

But in many cases, people misunderstand what it really means.

It’s not just a way to see how busy a team is.

Instead, it shows how well projects turn time into profit.

If you read it the right way, utilisation rate can show where you’re protecting your margins and where you might be losing them without noticing.

What Utilisation Rate Actually Measures

Utilisation rate measures what percentage of working time is spent on billable work.

At first glance, this seems simple.

More billable hours should lead to more revenue.

However, looking at utilisation alone doesn’t tell you much about financial results. You need to consider it along with pricing, how efficiently work is delivered, and project management.

Why High Utilisation Can Still Mean Low Margins

Many firms try to keep utilisation high for everyone.

This can give a false sense of good performance.

In reality, high utilisation can happen even when profits are falling.

This usually happens when:

• Projects are priced too tightly at the outset

• Teams spend longer than planned delivering work

• Rework and coordination inflate the time spent

• Senior staff are drawn into execution rather than oversight

In these cases, people spend more time, but the value doesn’t go up.

The outcome is clear:

more work, less profit.

What Low Utilisation Is Telling You

Low utilisation isn’t always a bad sign.

It can mean:

• Weak pipeline or poor forward planning

• Inefficient resource allocation

• Delays between project phases

But sometimes, it shows a firm is choosing to invest in:

• Business development

• Process improvement

• Strategic leadership

The key question is not whether utilisation is high or low.

It’s whether time is being used in a way that helps the business.

Utilisation as a Leading Indicator of Margin

How much profit a project makes depends on how time is used.

Every extra hour spent on a project adds to the cost.

If revenue doesn’t go up to match, profit margins shrink.

That’s why utilisation should be seen as an early warning sign, not just something to look back on.

For example:

• A project scoped at 1,000 hours but delivered in 1,250 hours will materially reduce margin

• High utilisation on underpriced work accelerates profit erosion

• Lack of visibility delays corrective action

By the time you see the impact in your accounts, the profit is already gone.

Practical Benchmarks: What "Good" Looks Like

Utilisation targets should be different for each role. Using the same target for everyone often leads to bad decisions.

Junior / Delivery Staff75% – 85%Core revenue drivers. Variance often signals inefficiency or poor planningMid-Level Engineers70% – 80%Balance between delivery and coordination responsibilitiesSenior Engineers / Leads60% – 70%Lower utilisation reflects oversight, quality control and decision-makingDirectors / Partners30% – 50%Focus on strategy, client relationships and high-value input

These numbers aren’t goals to push as high as possible.

They’re signs to help you understand what’s happening.

For example, making senior staff work at high utilisation often hurts project profits instead of helping them.

Where Utilisation Breaks Down in Practice

Problems with utilisation rarely come down to individual people.

They’re usually caused by bigger, structural issues.

Inaccurate Project Scoping

Projects often get priced as if everything will go perfectly, instead of accounting for real-world challenges.

(See: How Engineering Firms Underestimate Project Costs)

Weak Time Tracking

Time tracking is often inconsistent and lacks useful categories or regular checks.

Lack of Real-Time Financial Visibility

Firms often can’t see how time spent affects costs and profits while projects are still underway.

Disconnect Between Finance and Delivery

Project teams often do their work without knowing the full financial picture.

How to Use Utilisation to Improve Margins

Firms that keep their profits steady don’t try to push utilisation as high as possible.

Instead, they use utilisation as a tool to help manage the business.

1. Set Role-Specific Targets

Set utilisation goals that match each person’s real responsibilities, not just general targets.

2. Feed Data Back into Pricing

Use historical utilisation data to refine future project estimates and pricing.

3. Monitor in Real Time

Set up dashboards for each project to track time, costs, and profits as the work happens.

4. Link to Financial Outcomes

Always review utilisation together with revenue, costs, and profits.

From Busy Teams to Profitable Projects

Just because a team is busy doesn’t mean the business is making money.

Firms that focus only on utilisation often end up rewarding activity instead of real results.

The firms that do well over time take a different approach.

They link utilisation to their financial setup, pricing strategies, and project management.

Final Note

If your teams are working at high utilisation but profits are still tight, the problem isn’t how much they can do. It’s how you’re using their time.

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