Consulting work often mixes billable and internal time. Everhour tracks both inside project tools without changing your billing model.
Track billable vs. non-billable time and see your real utilization rate and revenue potential in seconds.
Working hours in the period
Admin, meetings, internal work
Industry average is 75–80%
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A consultant billable-hours calculation answers three practical questions: how many approved hours can be billed, what those hours are worth at the agreed rate, and how that number compares with available working capacity. For hourly consulting work, the core amount is approved billable hours multiplied by the billing rate before discounts, write-downs, tax, or collection effects.
The same calculation also supports profitability checks for fixed-fee, retainer, and value-based projects. Those projects are not always invoiced hour by hour, but recorded time still reveals the implied hourly value. If a fixed-fee project pays $12,000 and consumes 80 total hours, the implied rate is $150 per worked hour before expenses and non-collection.
Consultant utilization is billable hours divided by available hours. A consultant who works 45 total available hours in a week and records 32 approved billable hours has 71.11% utilization. That percentage measures capacity use, not invoice value, and it should stay separate from realization, collection, and effective billing rate.
Professional services benchmarks put consultant billable utilization in context, not law. Kantata's 2024 benchmark reported 70.9% average billable utilization across participating professional services organizations, while SPI Research uses 70% - 80% as the expected mature-organization range. At a 2,080-hour annual capacity, a 70% assumption equals 1,456 billable hours before holidays, PTO, training, sales, and internal work are excluded.
The basic hourly consulting formula is billable hours × billing rate. For example, a strategy consultant records 32 approved billable hours in a 45-hour workweek at $185 per hour. The pre-tax billable value is $5,920, and utilization is 71.11% because 32 billable hours divided by 45 available hours equals 0.7111.
Rounding belongs before the final billing value only when the contract, firm policy, or invoicing setup requires it. Consulting has no profession-wide statutory billing increment, unlike the legal field's common 0.1-hour convention. Keep raw tracked time, approved billable time, rounded billable time, write-downs, billed value, and collected revenue as separate figures so manual math does not hide margin loss.
A one-off calculation is enough for a single invoice estimate, a quick utilization check, or a fixed-fee postmortem. It is also enough when the project has one consultant, one rate, no write-downs, no taxable service issue, and no need to reconcile entries across tools or approvers.
A managed workflow becomes necessary when consultants track time across multiple projects, clients, rates, and approval steps. Everhour embeds tracking controls in supported project tools, syncs task and project metadata, and exposes timesheets and budgets inside work tools, so billable entries can move from daily work to review, reporting, and invoicing without rebuilding the calculation by hand.
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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G2
Summer 2026
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Capterra
Summer 2026
Rated in the top time trackers across G2, Capterra, and TrustRadius — with consistent praise for ease of use, integrations, and support.
You need approved billable hours, the billing rate, the available hours used for utilization, and any rounding rule set by contract, firm policy, or invoicing configuration. For U.S. work, use USD amounts and add a jurisdiction-specific tax input only when the consulting service is taxable under the applicable state or local rule.
For hourly consulting work, multiply approved billable hours by the agreed hourly billing rate. A consultant with 18 approved hours at $240 per hour has $4,320 in standard billable value before discounts, write-downs, tax, and collection effects. Fixed-fee, retainer, and value-based projects use time differently, usually to test profitability or implied hourly value.
Utilization measures billable hours divided by available hours. Realization measures billed value divided by the standard value of recorded time. A consultant can have strong utilization and weak realization when a client receives a write-down, or weak utilization and strong realization when fewer recorded hours are billed at full value.
The United States has no federal VAT/GST or national sales-tax rate for billed professional time. Sales tax treatment is state and local, and services are taxed differently by jurisdiction. Hawaii applies general excise tax to business activities, New Mexico includes services in gross receipts tax, and Texas taxes only taxable services under state and local rules.
The common mistake is averaging unlike rates or mixing billing models before calculating value. A senior consultant rate, analyst rate, fixed-fee project, and retainer should not be collapsed into one simple average unless the client contract uses that blended rate. Calculate each rate or fee structure separately, then summarize totals after approval.
Everhour integrates with tools such as Asana, ClickUp, Jira, GitHub, Monday, Notion, Trello, and others, adding tracking controls inside supported workflows. Synced project and task metadata keeps consultant time tied to the same work structure used for delivery, budgets, timesheets, and billing review.
Everhour Billing & Invoicing turns tracked billable time and expenses into invoices, calculates amounts from rates and billable time, and excludes non-billable work. Invoices can be exported to QuickBooks Online, Xero, or FreshBooks, with invoice status visible back in Everhour.
Track approved consultant hours where project work happens, then carry the same entries into timesheets, budgets, and billing review. Everhour connects project tools to billing workflows without duplicate entry.
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