Non-billable hours are the hours a professional works that cannot be charged to a client’s file — internal meetings, training, marketing, pro bono work, and administrative tasks like time entry and invoicing. They are still work, and under the Fair Labor Standards Act many of them must still be paid, even though no client is footing the bill.
The confusion built into the term is worth clearing up first. “Non-billable” describes who pays for the time (not the client), not whether the employee gets paid (they usually do). Whether an employer owes wages for those hours depends on how the employee is classified, not on whether the work generated an invoice.
What Counts as a Non-Billable Hour
Non-billable work falls into a handful of recognizable categories. None of it can be traced to a specific paying client, but all of it keeps a firm operating or a professional licensed.
Administrative and Internal Operations
Time-tracking, invoicing, reviewing billing entries, applying discounts, reconciling accounts, IT maintenance, cybersecurity work, onboarding new hires, performance reviews, and internal compliance training all sit here. Logging your daily activities into time-tracking software is itself non-billable, even though it’s the foundation for every accurate client invoice that follows.
Business Development and Marketing
Networking events, trade conferences, writing for professional journals, running a firm blog or social media presence, drafting proposals and pitch decks, digital advertising, and email newsletters are all non-billable. Proposal work is a common surprise: hours of research, drafting, and design produce no revenue unless a contract is actually signed.
Professional Development and Training
Conferences, specialized courses, webinars, and general research into new tools or market trends are non-billable. For many professions this time isn’t optional. Lawyers in most jurisdictions must earn a set number of Continuing Legal Education credits each year, and missing that requirement can lead to license suspension or other discipline. Accountants, financial advisors, and healthcare professionals face similar rules from their licensing boards. Bar dues, specialty-section fees, and credentials like a notary commission are non-billable overhead in the same vein.
Pro Bono and Community Service
ABA Model Rule 6.1 recommends that lawyers aim for at least 50 hours of pro bono legal services each year.1American Bar Association. Rule 6.1 Voluntary Pro Bono Publico Service The rule is aspirational, not binding, but many firms treat it as a professional expectation. Pro bono matters carry the same professional obligations as paying engagements, including conflict-of-interest screening. Firm-organized legal aid clinics, mentorship programs, and volunteer days count too.
Breaks and Personal Time
Lunch, coffee runs, brief personal calls, and short errands during the workday are non-billable. Firms typically exclude this time from productivity calculations so client invoices reflect only actual work performed. Whether the time is paid is a different question, addressed below.
When Non-Billable Hours Must Still Be Paid
The most costly assumption an employer can make is that “non-billable” means “unpaid.” Under the FLSA, most non-billable time is compensable, and the rules turn on how the employee is classified.
Hourly (Non-Exempt) Employees
The FLSA requires employers to pay non-exempt employees at least minimum wage for all hours worked, and that explicitly includes non-billable tasks like internal meetings, time-entry, and administrative cleanup.2U.S. Department of Labor. Fact Sheet 22 Hours Worked Under the Fair Labor Standards Act If non-billable work pushes an employee past 40 hours in a week, the excess counts toward overtime. The statute defines “employ” broadly: any work the employer knows about or permits is compensable, even if the employer didn’t ask for it.
Small increments still count. Under the federal de minimis rule, only truly insignificant periods — a few seconds or minutes that are administratively impossible to record — can be disregarded. An employer cannot pick an arbitrary cutoff and refuse to pay anything below it.3U.S. Department of Labor. FLSA Hours Worked Advisor – Recording Hours Worked
Salaried (Exempt) Employees
Exempt employees receive their full salary for any week in which they perform any work, no matter how the week split between billable and non-billable.4U.S. Department of Labor. Fact Sheet 17G Salary Basis Requirement and the Part 541 Exemptions Under the FLSA The salary cannot be docked because a professional spent most of the week on marketing, training, or internal work. The protection applies whether one billable hour was logged or forty.
Training Time
Employer-sponsored training is compensable for non-exempt employees unless all four of these conditions are met: it takes place outside normal working hours, attendance is genuinely voluntary, the content is not directly related to the employee’s current job, and no productive work is performed during the session.5eCFR. 29 CFR Part 785 Subpart C – Lectures, Meetings and Training Programs If any one of those conditions fails — a mandatory CLE during business hours, for instance — the time is paid work.
Breaks and Meal Periods
Federal law doesn’t require employers to offer breaks at all, but when they do, short rest breaks of roughly 5 to 20 minutes are compensable and must be counted toward the total hours worked for the week.6eCFR. 29 CFR 785.18 – Rest Meal periods of 30 minutes or longer are not compensable, but only if the employee is completely relieved of duty. Eating lunch at your desk while monitoring email doesn’t qualify as a real meal break.7eCFR. 29 CFR 785.19 – Meal
How Firms Measure Non-Billable Time
Two metrics do most of the work. The utilization rate is billable hours divided by total available hours. A professional who bills 30 hours out of a 40-hour week has a 75 percent utilization rate, meaning 25 percent of their available time went to non-billable activities.
Industry averages sit lower than most people expect. One legal industry survey found the average utilization rate for law firms was roughly 38 percent in 2025, meaning attorneys spent the majority of their available time on non-billable tasks. Firm targets of 60 to 80 percent are common, and the gap between target and reality is where the daily reality of internal operations, business development, and licensing obligations lives.
The realization rate is a companion figure: total collected divided by the standard value of billable work, expressed as a percentage. It drops below 100 percent whenever a firm writes off time, discounts an invoice, or absorbs an unpaid bill. Utilization and realization read together tell firm leadership how much billable capacity exists and how much of it actually becomes revenue.
Tax Treatment of Non-Billable Expenses
Many costs tied to non-billable activities are deductible as ordinary and necessary business expenses under Section 162 of the Internal Revenue Code, which covers expenses common and accepted in a given trade and helpful to the business.8Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses Advertising and marketing costs, continuing education fees, conference travel, business meals (at 50 percent), and professional association dues generally qualify.
Pro bono work is treated differently. The IRS does not allow a deduction for the dollar value of donated time or professional services. Unreimbursed out-of-pocket expenses incurred while performing pro bono work for a qualified organization can be deducted, provided they are directly connected to the services and not personal in nature.9Internal Revenue Service. Publication 526 Charitable Contributions Transportation to a pro bono client and supplies bought specifically for the engagement are typical examples.