Everhour gives engineering firms capacity controls for utilization tracking, while rate quality still depends on clean billable-hour policy.
Measure billable utilization against total capacity and see exactly how many hours you're leaving on the table each period.
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Utilization answers a specific operating question: how much available engineering capacity went to client-billable project work during the period. In an engineering firm, that period is usually a week, month, quarter, or year. The result helps principals compare project delivery load, proposal capacity, and non-billable overhead without treating every role as if it has the same target.
The denominator decides the meaning of the percentage. A fixed-capacity method uses a base such as 40 hours per week. A recorded-hours method uses all logged billable and non-billable time. A leave-adjusted method removes approved absences from available hours. Engineering firms should label the method on every utilization report because the same billable hours produce different percentages under different denominator rules.
The standard formula is billable engineering hours divided by denominator hours, multiplied by 100. For example, a project engineer logs 31 billable design and coordination hours, 5 internal quality-review hours, and 4 training hours in a 40-hour week. Using fixed capacity, the utilization rate is 31 ÷ 40 × 100 = 77.5%.
That same week meets a 75% target because 75% of 40 hours equals 30 billable hours. The engineer is 1 billable hour above target. Internal quality review and training still matter operationally, but they stay outside the numerator unless the firm bills them to a client under the project contract.
Engineering firms should avoid one flat utilization target across principals, project managers, engineers, designers, and administrative staff. Zweig Group's 2026 Fee + Billing Report of AEC Firms benchmarks chargeability across 33 employee levels, which reflects how role mix changes the target. Principals and managers carry business development, review, and staffing duties. Project engineers and technical staff usually carry higher chargeability expectations.
Benchmark comparisons also need the right peer group. Zweig Group segments AEC financial benchmarking by firm type, staff size, headquarters region, growth rate, and client base. BQE's 2025 Engineering Firm Benchmarking Report is based on real data from over 1,000 engineering firms, making it useful market context rather than a statutory rule. A target should match the firm's discipline, role structure, and delivery-versus-administrative staffing model.
A one-off calculation is enough when you need a quick weekly check, a proposal staffing sanity check, or a role-level benchmark comparison. It works when the inputs are clean, the denominator policy is already defined, and the result will not feed payroll, billing, or performance review decisions.
A managed workflow becomes necessary when engineers submit time across many projects, managers approve corrections, and principals compare utilization against weekly capacity. Everhour Team Management supports that workflow with weekly capacity, approval rules, locked periods, admin time correction, project assignments, team groups, and team-wide time policy defaults.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
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An engineering firm calculates utilization as billable engineering hours divided by the chosen denominator hours, then multiplied by 100. The denominator can be fixed weekly capacity, total recorded hours, or leave-adjusted working hours. The report should name the denominator because each method answers a different management question.
Principals often carry business development, client management, staffing, review, and firm leadership work that does not always become client-billable time. Project engineers usually spend more of their schedule on direct project delivery. Role-specific targets match how engineering firms actually allocate responsibility across the delivery model.
Internal QA time counts in billable utilization only when the firm bills that time to a client under the project agreement. Internal review that supports firm standards, training, rework, or management oversight usually belongs in non-billable time. The key rule is consistency across projects and reporting periods.
Utilization can exceed 100% when the firm uses a fixed-capacity denominator and an engineer records more billable hours than that base. For example, 43 billable hours against a 40-hour capacity base equals 107.5%. That result signals workload pressure and should be reviewed alongside overtime, staffing, and project deadlines.
U.S. federal law does not set a professional-services utilization target. The FLSA does not define full-time employment, and federal sources do not prescribe utilization goals for engineering firms. A 40-hour week is a common gross capacity baseline because covered nonexempt employees receive federal overtime pay for hours worked over 40 in a fixed 168-hour workweek.
Everhour Team Management lets engineering firms set weekly capacity, assign people to projects, approve submitted time, lock completed periods, and correct entries through admin controls. Those controls keep utilization inputs consistent before managers use them for staffing, billing, or performance review.
Everhour reporting can group logged time by member, project, client, and other report fields, then export reports in CSV, Excel/XLSX, or PDF. Engineering managers can compare billable and non-billable time by team group without rebuilding the same spreadsheet each period.
Set capacity rules, approve time, and lock completed periods before utilization reaches billing or staffing reports. Everhour Team Management keeps engineering utilization tied to controlled, reviewable team records.
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