How-to-Guide: Measuring & Improving Billable Utilization

Billable utilization is the percentage of available hours resources spend on billable work. Measuring billable utilization is critical for any services business, as it reveals how effectively resources are used and where there is room for improvement or opportunities to increase profitability. Even small changes in billable utilization can have a measurable impact on revenue, margins, and overall business performance.

Billable work is defined as the hours employees spend on revenue-generating, client-facing activities. These hours are considered “billable” because they are charged to and paid by clients. Not all available hours are spent on billable work, however, as resources are expected to undertake some work that does not involve client-facing projects – attending training, internal meetings, or completing administrative tasks, for example.

While non-billable work is necessary to support operations, spending too much time on it can reduce overall utilization and limit revenue potential. Understanding the balance between billable and non-billable time is essential to maintaining both productivity and long-term performance. To make this metric actionable, it’s important to understand how billable utilization is calculated.

Billable utilization is calculated by dividing the number of billable hours by the total number of available hours (typically excluding allocated holiday time), and then multiplying by 100. This provides a clear view of how much of a resource’s capacity is devoted to revenue-generating work.

The formula for billable utilization is as follows:

Utilization = (Billable Hours/Total Available Hours) x 100%.

Total available hours typically exclude holidays and approved time off, though the exact definition of capacity may vary slightly between organizations.

Example: A consulting firm assigns a resource to a client project expected to require 1,200 billable hours over one year. Total available hours are based on a 40-hour work week across 52 weeks (minus holidays) — roughly 2,000 hours. 

In this case, the resource’s billable utilization would be 60%, meaning that 60% of their available time is spent on billable work, while the remaining time is allocated to non-billable activities. 

Billable utilization can be measured at different levels depending on the decisions you need to make. Looking at utilization from multiple perspectives helps leaders spot risk earlier, allocate resources more effectively, and understand how utilization is affecting performance across the business. Professional services firms commonly review utilization at the individual, team, and company-wide level because each view answers a different operational question.

The three most common ways to measure billable utilization include:

• Individual: Helps identify how a resource’s time is being used, whether they have capacity for additional billable work, and if they may be at risk of burnout due to sustained high utilization.
• Team or Department: Highlights which teams are overutilized or underutilized, making it easier to balance workloads, improve planning, and reduce bottlenecks across projects.
• Company-wide: Provides a broader view of how effectively total capacity is being converted into billable work, helping assess overall revenue efficiency, margin performance, and operational health.

Once you have the underlying time and capacity data in place, utilization can be evaluated against several internal and external reference points. Looking beyond a single utilization percentage helps organizations understand whether performance is on track, where inefficiencies exist, and what changes may be needed to improve outcomes.

Some of the key metrics to review include:

• Ideal vs Actual Utilization Rate: The ideal utilization rate is the target set for individuals, teams, or the organization based on business goals. Actual utilization reflects the true percentage of time spent on billable work. Comparing the two helps identify gaps and areas for adjustment.
• Internal Utilization Benchmarks: Comparing utilization across teams, roles, or departments helps uncover performance patterns, identify best practices, and standardize more efficient workflows across projects.
• External Utilization Benchmarks: Benchmarking against industry data provides context on how the business is performing relative to the market, while accounting for differences in business models, service mix, and delivery structure.

A target utilization rate is calculated by taking the percentage of billable time vs. the total capacity required out of resources to hit your revenue goals. Understanding and calculating target utilization is key for any business hoping to be profitable. Target utilization varies from one company to the next – it depends on the financial and workforce objectives of each organization. Target utilization rates that are set too high often result in long-term attrition issues. On the other hand, a low target results in underperformance and will have a negative impact on profitability and revenue generation.

There is no right answer when it comes to setting utilization targets – they just need to align with the capacity of your workforce and your revenue goals. Setting clear targets enables resources and managers to have a benchmark to measure against. If 70% is the decided upon target, anything above that threshold may signify resources are being overworked (overutilization), and anything below that threshold reveals resources are not spending enough time on revenue-generating work (underutilization). Both have a significant impact on the success of any business — as people are the primary revenue generator at services organizations.

Billable utilization targets vary by role, seniority, and business model. Senior leaders typically maintain lower rates due to business development and strategic work, while delivery-focused roles often target higher utilization. The right target depends on your organization’s service model, growth stage, and profitability goals.

Rather than chasing a single benchmark, focus on what drives profitability for your specific business. A consultancy with high bill rates may operate profitably at lower utilization, while firms with tighter margins need higher rates to maintain financial health. Track utilization trends over time and adjust targets based on your actual revenue performance, project pipeline, and resource capacity—not industry averages that may not reflect your reality.

Maintaining the right level of utilization across your workforce is critical to both performance and long-term sustainability. When utilization moves too far in either direction, it can create operational challenges that impact productivity, revenue, and employee well-being. Understanding where imbalances occur and how they affect your business is an important step toward making more informed decisions about resource management.

What is Underutilization?

Underutilization occurs when an employee’s billable workload is below the agreed target utilization rate. It happens when resources are inefficiently used or not used to their full capacity. The lower the utilization rate, the more room there is for resources to take on additional work. Keep this in mind when considering underutilization: the goal is not to have all resources operating at 100% utilization. That is simply not sustainable. Just because an employee has remaining capacity after logging billable work does not mean they are underutilized. They require that time to complete productive,  non-billable activities. A resource should only be classified as underutilized when its utilization percentage consistently and significantly falls below the defined target.

When resources are underutilized, the impact on the business can be significant. Optimized resource management requires reducing the number of underutilized resources so they have ample opportunities to contribute to revenue generation. Resources can generate revenue only when assigned to billable work. If resources are underutilized, they need to be matched to projects as soon as possible to prevent profitability from being affected while they remain on the bench without contributing to revenue-generating activities.

What is Overutilization?

Overutilization occurs when the hours spent by employees on billable work exceed their total available hours (also referred to as capacity). Resources that are operating above their target utilization rate are not necessarily overutilized, but it does signal managers to keep an eye on the resource. Exceeding the target is not inherently negative from a profitability perspective, as it can drive higher revenue. However, when this occurs consistently, it’s likely that the resource is nearing a threshold of work that is not realistic over the long term.

Consistently overutilized employees are often assigned workloads that are difficult to maintain, making them more susceptible to burnout. Burnout often results in reduced productivity, lower quality of work delivered to clients, and increased stress for key resources who might eventually opt to leave. If you find that your business has a number of resources that are consistently overutilized and you struggle to balance utilization across your workforce, consider checking out these nine tips to improve resource utilization in the next 30, 60, and 90 days.

To effectively manage resources and measure billable utilization trends accurately, you need complete visibility into how resources are spending their time. Monitoring utilization trends over time requires a reliable time tracking system in place, along with consistent and timely entry of hours across all projects. When data is accurate, it becomes possible to identify trends and make informed decisions that benefit resources, clients, and overall business performance.

Looking for trends is much more valuable than trying to compare individual performance in isolation. If billable utilization is declining across the company, it may indicate inefficiencies or gaps in resource planning. Conversely, even small improvements in average billable utilization can have a direct and measurable impact on revenue.

To get a handle on tracking their billable utilization rates, many companies invest in a solution with resource management capabilities purpose-built for professional services organizations. These tools provide businesses with the insights they need to ensure their resources spend more time on appropriate, billable projects that have the greatest potential to drive revenue.

Billable utilization is more than an operational metric. In professional services organizations, it is closely tied to profitability, delivery performance, and the effective use of existing capacity. When utilization is managed well, firms are better positioned to increase revenue from their current workforce while maintaining workloads that support sustainable project delivery.

To realize these benefits, it’s important to understand the specific ways billable utilization contributes to performance across the organization.

Improves Employee Productivity

Tracking billable and non-billable time gives managers a clearer view of how resources are being used across the business. That visibility makes it easier to identify where time is being lost, where capacity is available, and where resources can be shifted toward higher-value work. Over time, this can improve productivity and help firms get more revenue from existing talent.

Enhances Project Delivery Efficiency

Effective billable utilization supports better staffing decisions by helping organizations place the right resources on the right work at the right time. Better visibility into utilization and demand can reduce last-minute staffing changes, improve delivery predictability, and help projects stay on track against deadlines and milestones.

Supports Stronger Client Outcomes

When resources are allocated more effectively and workloads are managed more consistently, teams are better able to deliver quality work on time. That reliability can strengthen client confidence and contribute to longer-term relationships, which is especially important in professional services environments where delivery quality and trust directly influence retention.

Reduces Revenue Leakage

Improving billable utilization increases the share of available time that is converted into client-facing, revenue-generating work. Reducing avoidable bench time and unnecessary non-billable effort can have a direct effect on revenue and margin, even when the change in utilization appears relatively small.

Managing billable utilization effectively is challenging when organizations lack visibility into resource capacity and demand. In commissioned research from Forrester Consulting, 59% of professional services leaders reported difficulty in predicting project resource needs in advance, a challenge that directly impacts utilization planning and rates.

Some of the most common challenges associated with billable utilization include:

• Balancing billable and non-billable work: While increasing billable hours drives revenue, non-billable activities such as training, research, and internal collaboration are essential for long-term performance. Overlooking these can impact future growth and capability.
• Maintaining employee satisfaction: A strong focus on high utilization rates can lead to sustained workloads that are difficult to maintain. Over time, this increases the risk of burnout, reduced productivity, and higher employee turnover.
• Balancing quality and quantity of work: Increasing the number of projects to improve utilization can result in overextended teams. This may lead to delays, reduced delivery quality, and missed client expectations.
• Limited visibility into resource demand: Without accurate forecasting and real-time data, organizations often struggle to align resources with project needs, leading to inefficiencies and inconsistent utilization.
• Ineffective use of utilization data: Simply tracking utilization is not enough. Organizations must actively analyze and apply this data to improve resource planning, project delivery, and overall business performance.

In service organizations, billable utilization and resource management directly impacts both revenue and operational efficiency. Addressing these challenges is key to building a more predictable, scalable, and profitable business.

Simply tracking utilization is not enough. The real value comes from using accurate data to make informed decisions that improve both productivity and profitability. Once utilization metrics are consistently measured across resources and time periods, it becomes easier to identify where adjustments are needed and take action proactively.

Set Clear, Realistic Utilization Targets

Start by establishing utilization targets that reflect the realities of different roles across the business. A single benchmark rarely works for every resource, since some employees spend more time on delivery while others contribute through management, oversight, or internal leadership responsibilities. Clear, role-appropriate targets make it easier to track performance accurately and identify where intervention may be needed.

Improve Time Tracking Accuracy

Accurate time tracking is foundational to improving utilization. If billable and non-billable hours are not captured consistently, it becomes difficult to see where time is being lost, where capacity is available, and where changes are needed. Simple processes, regular time entry, and reliable policies help reduce time leakage and give decision-makers data they can actually use.

Allocate Resources Proactively

Utilization improves when resources are assigned to the right work at the right time. That means matching skills to project needs, optimizing resources, reducing bench time where possible, and looking ahead at upcoming demand instead of staffing reactively. Comparing forecasted demand with actual utilization can also help teams adjust earlier and improve both delivery planning and revenue predictability.

Reduce Unnecessary Non-Billable Work Hours

Not all non-billable work can or should be removed, but it should be monitored closely. Excessive administrative effort, repetitive reporting, and inefficient internal processes can absorb time that could otherwise be spent on client work or other high-value activities. Reviewing how billable hours are used can help organizations streamline low-value work without compromising necessary internal responsibilities.

Usage of Purpose-Built Tools

Improving professional services billable utilization at scale is much easier when teams have real-time visibility into project progress, capacity, and resource utilization. Purpose-built professional services tools can help organizations track utilization across teams and time periods, compare planned versus actual hours, and spot signs of overutilization or underutilization before they become larger delivery or profitability issues.

For a 100-person services team, increasing billable time by just 1 hour per person per week at an average rate of $200/hour can add $1M in annual revenue. Even a 1% improvement in billable utilization can translate into significant gains, as quantified by a Resource Utilization and Revenue Calculator.

Improve Visibility into Projects and Teams

Complete visibility into project progress, resource availability, and time spent on billable work is essential for improving professional services billable utilization. With access to accurate, real-time data across portfolios, managers can make informed staffing decisions instead of relying on assumptions. Purpose-built tools also help surface risks early, reduce last-minute adjustments, and ensure resources stay aligned with billable work.

Centralize Talent and Skills Database

A centralized view of resource skills and availability allows organizations to better utilize internal capacity before turning to external resources. This helps reduce delays caused by shifting timelines, minimizes reliance on expensive contractors, and enables quicker redeployment of underutilized resources to billable work. It also supports more consistent and efficient project delivery.

Improving billable utilization should never come at the expense of employee well-being or client outcomes. The goal is to create a more efficient and predictable operating model where capacity is used more effectively, teams remain sustainable, and revenue opportunities are captured more consistently.

The Kantata Professional Services Cloud is proven to help businesses measure, track and improve billable utilization, with greater accuracy and visibility. By bringing together resource planning, project tracking, and real-time data, businesses are able to make more informed decisions that drive both profitability and predictability.

These improvements are not theoretical. Businesses using Kantata have seen measurable gains in utilization by aligning resources more effectively with billable work and reducing inefficiencies across projects.

To see how this translates in practice, here are a few examples of how customers have improved their utilization rates with Kantata:

• TeleTracking Increases Billable Utilization by 37% with Kantata
• CORE Business Technologies Increases Billable Utilization by 35% with Kantata
• Kantata Helps ERP Consulting Group The Answer Company Increase Resource Utilization by 11%

These outcomes highlight how improving billable utilization can lead to overall betterment in business performance.

Are you looking for a more effective way to improve visibility, efficiency, and control across your service operations? Using a solution like Kantata for resource management gives business leaders confidence that the billable utilization metrics and trends they rely on are accurate and actionable. With real-time visibility into projects, resources, and performance, organizations can make informed decisions earlier, reducing operational blind spots and preventing issues before they impact profitability.

Want to see the potential impact of improved utilization on your revenue? Use Kantata’s Utilization and Revenue Calculator to quantify how even small changes in billable utilization translate into measurable revenue gains.

Schedule a call with a Kantata representative today to discuss how our platform can support your utilization and resource planning goals.

What is billable utilization and why does it matter?

Billable utilization measures the percentage of available time that resources spend on revenue-generating client work. It matters because it directly impacts profitability, helps organizations understand resource productivity, and provides insight into how effectively capacity is being used across the business.

What’s the difference between billable utilization and capacity utilization?

Billable utilization measures time spent on revenue-generating client work, while capacity utilization includes all productive work—both billable and non-billable activities like training, proposals, and internal projects. Capacity utilization provides a broader view of how resources are being used across the organization.

What is a good billable utilization rate for professional services organizations?

There isn’t a universal benchmark that works for every organization. Professional services billable utilization targets vary based on your service model, role mix, and profit margins. What matters most is understanding what drives profitability for your specific business and tracking performance against those goals rather than generic industry averages.

How can I improve billable utilization without burning out my team?

Focus on better resource planning and visibility rather than simply increasing workload. Use real-time data to match skills with project demand, automate administrative tasks to reduce non-billable time, and ensure you’re balancing billable work with essential non-billable activities like training and development that support long-term performance.

What factors impact professional services billable utilization rates?

Professional services billable utilization rates are influenced by several factors, including resource allocation efficiency, project pipeline consistency, non-billable time requirements, skills availability, and how accurately time is tracked and reported. External factors like market demand, seasonal fluctuations, and client budget cycles also play a role. Organizations with better forecasting, real-time visibility, and proactive resource planning typically maintain more consistent utilization rates throughout the year.

How often should billable utilization be reviewed and analyzed?

Review utilization data weekly for operational adjustments like immediate staffing needs, but analyze trends monthly or quarterly for strategic decisions. Short-term fluctuations are normal due to project cycles and market conditions. Focus on patterns over time rather than reacting to single-week variations, and use those trends to refine forecasting, capacity planning, and utilization targets.

How does resource management software help with billable utilization?

Resource management software provides real-time visibility into resource availability, project demand, and utilization trends. This helps organizations staff projects more accurately, identify underutilization or overallocation early, and make data-driven decisions about capacity planning—leading to more consistent utilization rates and better profitability.

How does Kantata help organizations track and improve billable utilization?

Kantata provides real-time visibility into resource availability, project demand, and utilization trends across your entire organization. The platform connects resource planning, project delivery, and financial performance in one system, helping you identify utilization gaps early, staff projects with the right skills, and make data-driven capacity decisions that improve both utilization rates and profitability.