Utilisation Rate: The Core Metric for Service Businesses

Utilisation rate measures the percentage of available working time that is spent on billable or productive work.

Utilisation rate = Billable hours ÷ Available hours × 100

If a consultant works 40 hours in a week and 28 of those hours are on billable client work, their utilisation rate is 70%.

Utilisation is the primary operational efficiency metric for agencies, consultancies, law firms, accountants, architects, and any business that sells time. A business with high utilisation is extracting more revenue from its people cost than one with low utilisation — all else being equal.

Billable utilisation: hours billed to clients ÷ available hours. The revenue-generating measure.

Productive utilisation: billable hours + internal productive work (business development, product development, training) ÷ available hours. Captures time that builds the business even if not directly billed.

Target utilisation: the rate you plan for. Usually 70–80% for most professional services — leaving 20–30% for admin, business development, and recovery time.

Never target 100% utilisation — it guarantees burnout and leaves no capacity for urgent client work, business development, or team management.

Not all roles should have the same utilisation target:

| Role | Typical target utilisation |

|---|---|

| Junior consultant / analyst | 80–85% |

| Mid-level consultant | 70–80% |

| Senior consultant / manager | 60–70% |

| Director / partner | 40–60% |

| Operations / admin | N/A (non-billable) |

Senior people have lower targets because their time is split between billable work, business development, management, and mentoring — all of which drive revenue indirectly.

Connect your time-tracking tool (Harvest, Toggl Track, Clockify, Float) via CSV export to AskBiz. Upload weekly or monthly with columns: employee, date, project, hours, billable (yes/no), client.

Ask AskBiz:

• *'What is the average billable utilisation rate by team member this month?'*
• *'Which team members are below 60% utilisation for 2 consecutive months?'*
• *'What is my firm-wide utilisation rate this quarter vs the same quarter last year?'*

Set an alert for utilisation falling below your target threshold — this is an early warning of either capacity surplus or project management problems.

Low utilisation is usually caused by one of four things:

1. Not enough client work — pipeline problem. Review BD activity and proposal conversion rates.

2. Poor project scheduling — gaps between projects where team is idle. Improve capacity planning and project pipeline visibility.

3. Too much admin and overhead — time tracking, internal meetings, and admin are eating billable time. Audit what non-billable time is being spent on and reduce the unnecessary.

4. Scope drift — projects running over in unbilled ways. Review whether scope creep is eroding billable hours on active projects.

High utilisation (> 85%) sustained over months is equally dangerous — it signals burnout risk, and quality begins to suffer.