Billable Hours: Definition, Utilization Targets, and Tracking
Billable hours are the working hours a business can invoice to a client under an hourly or retainer agreement, as opposed to non-billable hours spent on administration, selling, and training, and the ratio between them (billable utilization) drives profitability in agencies, consultancies, and BPOs.
Billable hours are the hours of work that can be charged to a client. Every other hour an employee is paid for, whether spent in an internal meeting, on a sales call, learning a tool, or waiting for a client's feedback, is a non-billable hour. For any business that sells time, from law firms and marketing agencies to outsourced support teams paid by the hour, the ratio of billable to total hours decides whether the payroll produces a profit.
What Are Billable Hours?
A billable hour is only billable if three conditions are met: the work was done for a specific client, the engagement terms allow it to be charged, and it was recorded well enough to survive the client's review of the invoice. The third condition is where most revenue is lost. Work that was genuinely done for the client but never written down, or was written down as "misc," gets written off before the invoice goes out.
The difference between billable and non-billable is set by the contract, not by how useful the work was. Reading a client's brief is billable on most retainers. Preparing a proposal to win that client was not, because there was no contract yet. Fixing a mistake your own team made is usually non-billable, because clients will not pay for it twice. Internal training on the client's software may be billable if the statement of work says onboarding is chargeable, and non-billable if it does not.
Non-billable hours are not waste
A team that reports 100 percent billable hours is either lying or has no pipeline. Selling, hiring, training, and improving processes are all non-billable and all necessary. The management question is not how to eliminate non-billable time but how to keep it at a level the billing rate can carry.
Billable Utilization
Billable utilization is the share of an employee's available hours that were billed:
Billable utilization = Billable hours ÷ Total available hours × 100
"Total available hours" is where firms differ. Some use total paid hours, including PTO and holidays. Others use working hours net of leave. Pick one, write it down, and use it consistently, because a 70 percent target means something different under each denominator.
A worked example
A 12-person remote marketing agency bills clients at $120.00 an hour and pays account managers a fully loaded cost of $45.00 an hour. Each manager is paid for 2,080 hours a year. Over a quarter, one manager's time records show:
- Total paid hours: 520
- PTO and holidays: 40
- Available working hours: 480
- Billable hours recorded and invoiced: 312
- Non-billable hours (internal meetings, pitches, training, admin): 168
Billable utilization on available hours: 312 ÷ 480 = 65 percent. Revenue generated: 312 × $120.00 = $37,440.00. Cost of the quarter: 520 × $45.00 = $23,400.00. Gross margin before overhead: $37,440.00 − $23,400.00 = $14,040.00, or 37.5 percent of revenue.
If the same manager reaches 75 percent utilization, or 360 billable hours, revenue rises to $43,200.00 and gross margin to $19,800.00, a 41 percent increase in margin from a 10-point change in utilization. That leverage is why agencies watch the number weekly.
Billable Hours vs Related Terms
| Billable hours | Non-billable hours | Utilization rate | |
|---|---|---|---|
| Definition | Hours invoiced to a client | Paid hours not invoiced | Billable ÷ available hours |
| Example | Drafting a client's campaign | Team stand-up, proposal writing | 65 percent |
| Who cares | Finance, account leads | Operations, people managers | Leadership, resourcing |
| Failure mode | Under-recording leads to leakage | Growth without limit erodes margin | Chasing the number starves the pipeline |
The related utilization rate entry covers utilization in the broader sense that includes productive but unbilled work, which is how contact centers and internal teams use the term.
Recording Increments and Rounding
Professional services firms usually record billable time in tenths of an hour (six-minute units) or quarter hours. The increment is a contract term, and it affects revenue more than most people expect. A 12-minute task recorded in six-minute units bills 0.2 hours. The same task recorded in quarter hours bills 0.25 hours, a 25 percent uplift that a sharp-eyed client procurement team will eventually notice. Choose the increment that matches the industry norm for your clients and disclose it.
For employees, rounding billable entries is separate from rounding payroll time. The FLSA rule at 29 CFR 785.48 lets employers round payroll punches to the nearest five minutes, tenth, or quarter hour only if the practice does not, over time, fail to pay employees for all time worked. Billing rounding follows the client contract; payroll rounding follows the law. Keep the two records distinct.
Billable Hours in Contact Centers and Remote Teams
An outsourced customer support provider staffs a dedicated 20-agent team for a software client on a per-productive-hour contract. The client pays $28.00 for every hour an agent is logged in and available on the client's queue, and nothing for breaks, coaching, or system downtime. In practice the provider's agents are paid for 8 hours a shift but bill about 6.8, because 30 minutes goes to unpaid lunch, 30 to paid breaks, and 40 to coaching and huddles. The team lead's job is to protect the 6.8 and push it toward 7.0 without cutting the coaching that keeps quality scores up. When one week's invoice shows 6.3 billable hours per agent per day, the time records reveal a CRM outage on Tuesday that idled the team for 90 minutes. The provider recovers the revenue by invoking the contract's client-caused-downtime clause, which it can only do because the outage minutes were recorded at the time.
Remote freelancers and virtual assistants face the same problem in miniature. A VA who bills a client for "email management, 2 hours" gets a query. One who bills "email management, 1.9 hours, 8:03 to 9:57 a.m., 41 messages processed" gets paid.
How to Track Billable Hours
The reliable way to capture billable time is to record it as it happens rather than reconstruct it on Friday. HiveDesk's task and project tracking lets employees start a timer against a specific client project, so every tracked minute already carries the project it belongs to. Automatic time tracking on the desktop, mobile, and browser apps captures start and stop times without manual entry, and periodic screenshots provide evidence of the work when a client questions an invoice line. Timesheets can be reviewed and approved by a manager before they feed the invoice, and project reports show billable hours per client, per employee, and per period, which is the data behind a utilization dashboard. Non-billable work can be tracked against internal projects so the denominator is real rather than estimated. The single plan is $5/user/month with a 14-day free trial, which for an agency is a fraction of the value of one recovered billable hour a month.
Capture Billable Time as It Happens
HiveDesk tracks hours by project and client automatically, backs each entry with screenshots, and reports utilization per employee. $5/user/month, 14-day free trial.
Related Terms
- Utilization rate: billable and productive utilization compared
- Idle time: the paid minutes that generate neither billable nor productive work
- Hours worked: the payroll measure that billable hours must never fall out of step with
- Timekeeping: the systems that make billable records defensible
- Workforce management: planning capacity against billable demand
- Payroll hours calculator: total paid hours for the utilization denominator
Frequently Asked Questions
What counts as a billable hour? Any hour of work performed for a specific client that the engagement agreement allows you to charge for, recorded in enough detail to be invoiced. Work done before a contract exists, internal administration, and fixing your own errors are normally non-billable.
What is a good billable utilization rate? It depends on the role and business model. Delivery staff at agencies and consultancies commonly target somewhere in the 65 to 80 percent range of available hours, with senior staff lower because they sell and manage. Set the target from your own margin model rather than an industry rumor.
Are non-billable hours bad? No. Selling, training, hiring, and process improvement are non-billable and essential. The goal is to keep them at a level the billing rate can absorb, and to make sure genuinely billable work is not being logged as non-billable by mistake.
What is the standard billing increment? Law firms typically bill in six-minute (0.1 hour) increments. Agencies and consultancies often use 15 minutes. The increment should be written into the client agreement because it changes the invoice total.
How do billable hours relate to payroll hours? Payroll hours are everything the employee is paid for and are governed by wage law. Billable hours are the subset charged to clients and are governed by the contract. Billable hours can never exceed hours worked, and a gap between the two that keeps growing usually points to under-recording.
Do remote employees track billable hours differently? The principle is the same, but remote work removes the visual cues managers rely on, so a timer-based tool that records the project and provides evidence of the work matters more.
Browse more workforce management terms in the glossary.